[RFC PATCH 0/5] Thermal: build all thermal framework code into thermal_sys module

[RFC PATCH 0/5] Thermal: build all thermal framework code into thermal_sys module

[Zhang Rui]

A regression introduced by thermal governor feature
is reported in http://marc.info/?l=linux-kernel&m=136085598604095&w=2

And the root cause is that all the thermal governors can not be registered
successfully when the thermal framework is built as a module.

Thus I made this patch set to build all the thermal framework component,
including governors and cpu_cooling feature into one module so that all the
thermal features are loaded/unloaded altogether.

any comments?

thanks,
rui

[RFC PATCH 1/5] Thermal: rename thermal_sys.c to thermal_core.c

[Zhang Rui]

No functional change in this patch.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/thermal/Makefile       |    1 +
 drivers/thermal/thermal_core.c | 1888 ++++++++++++++++++++++++++++++++++++++++
 drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
 3 files changed, 1889 insertions(+), 1888 deletions(-)
 create mode 100644 drivers/thermal/thermal_core.c
 delete mode 100644 drivers/thermal/thermal_sys.c

diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index d3a2b38..b2009bd 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -3,6 +3,7 @@
 #
 
 obj-$(CONFIG_THERMAL)		+= thermal_sys.o
+thermal_sys-y			+= thermal_core.o
 
 # governors
 obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
new file mode 100644
index 0000000..5b7863a
--- /dev/null
+++ b/drivers/thermal/thermal_core.c
@@ -0,0 +1,1888 @@
+/*
+ *  thermal.c - Generic Thermal Management Sysfs support.
+ *
+ *  Copyright (C) 2008 Intel Corp
+ *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/kdev_t.h>
+#include <linux/idr.h>
+#include <linux/thermal.h>
+#include <linux/reboot.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
+
+#include "thermal_core.h"
+
+MODULE_AUTHOR("Zhang Rui");
+MODULE_DESCRIPTION("Generic thermal management sysfs support");
+MODULE_LICENSE("GPL");
+
+static DEFINE_IDR(thermal_tz_idr);
+static DEFINE_IDR(thermal_cdev_idr);
+static DEFINE_MUTEX(thermal_idr_lock);
+
+static LIST_HEAD(thermal_tz_list);
+static LIST_HEAD(thermal_cdev_list);
+static LIST_HEAD(thermal_governor_list);
+
+static DEFINE_MUTEX(thermal_list_lock);
+static DEFINE_MUTEX(thermal_governor_lock);
+
+static struct thermal_governor *__find_governor(const char *name)
+{
+	struct thermal_governor *pos;
+
+	list_for_each_entry(pos, &thermal_governor_list, governor_list)
+		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
+			return pos;
+
+	return NULL;
+}
+
+int thermal_register_governor(struct thermal_governor *governor)
+{
+	int err;
+	const char *name;
+	struct thermal_zone_device *pos;
+
+	if (!governor)
+		return -EINVAL;
+
+	mutex_lock(&thermal_governor_lock);
+
+	err = -EBUSY;
+	if (__find_governor(governor->name) == NULL) {
+		err = 0;
+		list_add(&governor->governor_list, &thermal_governor_list);
+	}
+
+	mutex_lock(&thermal_list_lock);
+
+	list_for_each_entry(pos, &thermal_tz_list, node) {
+		if (pos->governor)
+			continue;
+		if (pos->tzp)
+			name = pos->tzp->governor_name;
+		else
+			name = DEFAULT_THERMAL_GOVERNOR;
+		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
+			pos->governor = governor;
+	}
+
+	mutex_unlock(&thermal_list_lock);
+	mutex_unlock(&thermal_governor_lock);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(thermal_register_governor);
+
+void thermal_unregister_governor(struct thermal_governor *governor)
+{
+	struct thermal_zone_device *pos;
+
+	if (!governor)
+		return;
+
+	mutex_lock(&thermal_governor_lock);
+
+	if (__find_governor(governor->name) == NULL)
+		goto exit;
+
+	mutex_lock(&thermal_list_lock);
+
+	list_for_each_entry(pos, &thermal_tz_list, node) {
+		if (!strnicmp(pos->governor->name, governor->name,
+						THERMAL_NAME_LENGTH))
+			pos->governor = NULL;
+	}
+
+	mutex_unlock(&thermal_list_lock);
+	list_del(&governor->governor_list);
+exit:
+	mutex_unlock(&thermal_governor_lock);
+	return;
+}
+EXPORT_SYMBOL_GPL(thermal_unregister_governor);
+
+static int get_idr(struct idr *idr, struct mutex *lock, int *id)
+{
+	int ret;
+
+	if (lock)
+		mutex_lock(lock);
+	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
+	if (lock)
+		mutex_unlock(lock);
+	if (unlikely(ret < 0))
+		return ret;
+	*id = ret;
+	return 0;
+}
+
+static void release_idr(struct idr *idr, struct mutex *lock, int id)
+{
+	if (lock)
+		mutex_lock(lock);
+	idr_remove(idr, id);
+	if (lock)
+		mutex_unlock(lock);
+}
+
+int get_tz_trend(struct thermal_zone_device *tz, int trip)
+{
+	enum thermal_trend trend;
+
+	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
+		if (tz->temperature > tz->last_temperature)
+			trend = THERMAL_TREND_RAISING;
+		else if (tz->temperature < tz->last_temperature)
+			trend = THERMAL_TREND_DROPPING;
+		else
+			trend = THERMAL_TREND_STABLE;
+	}
+
+	return trend;
+}
+EXPORT_SYMBOL(get_tz_trend);
+
+struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
+			struct thermal_cooling_device *cdev, int trip)
+{
+	struct thermal_instance *pos = NULL;
+	struct thermal_instance *target_instance = NULL;
+
+	mutex_lock(&tz->lock);
+	mutex_lock(&cdev->lock);
+
+	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
+		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
+			target_instance = pos;
+			break;
+		}
+	}
+
+	mutex_unlock(&cdev->lock);
+	mutex_unlock(&tz->lock);
+
+	return target_instance;
+}
+EXPORT_SYMBOL(get_thermal_instance);
+
+static void print_bind_err_msg(struct thermal_zone_device *tz,
+			struct thermal_cooling_device *cdev, int ret)
+{
+	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
+				tz->type, cdev->type, ret);
+}
+
+static void __bind(struct thermal_zone_device *tz, int mask,
+			struct thermal_cooling_device *cdev)
+{
+	int i, ret;
+
+	for (i = 0; i < tz->trips; i++) {
+		if (mask & (1 << i)) {
+			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
+					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
+			if (ret)
+				print_bind_err_msg(tz, cdev, ret);
+		}
+	}
+}
+
+static void __unbind(struct thermal_zone_device *tz, int mask,
+			struct thermal_cooling_device *cdev)
+{
+	int i;
+
+	for (i = 0; i < tz->trips; i++)
+		if (mask & (1 << i))
+			thermal_zone_unbind_cooling_device(tz, i, cdev);
+}
+
+static void bind_cdev(struct thermal_cooling_device *cdev)
+{
+	int i, ret;
+	const struct thermal_zone_params *tzp;
+	struct thermal_zone_device *pos = NULL;
+
+	mutex_lock(&thermal_list_lock);
+
+	list_for_each_entry(pos, &thermal_tz_list, node) {
+		if (!pos->tzp && !pos->ops->bind)
+			continue;
+
+		if (!pos->tzp && pos->ops->bind) {
+			ret = pos->ops->bind(pos, cdev);
+			if (ret)
+				print_bind_err_msg(pos, cdev, ret);
+		}
+
+		tzp = pos->tzp;
+		if (!tzp || !tzp->tbp)
+			continue;
+
+		for (i = 0; i < tzp->num_tbps; i++) {
+			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
+				continue;
+			if (tzp->tbp[i].match(pos, cdev))
+				continue;
+			tzp->tbp[i].cdev = cdev;
+			__bind(pos, tzp->tbp[i].trip_mask, cdev);
+		}
+	}
+
+	mutex_unlock(&thermal_list_lock);
+}
+
+static void bind_tz(struct thermal_zone_device *tz)
+{
+	int i, ret;
+	struct thermal_cooling_device *pos = NULL;
+	const struct thermal_zone_params *tzp = tz->tzp;
+
+	if (!tzp && !tz->ops->bind)
+		return;
+
+	mutex_lock(&thermal_list_lock);
+
+	/* If there is no platform data, try to use ops->bind */
+	if (!tzp && tz->ops->bind) {
+		list_for_each_entry(pos, &thermal_cdev_list, node) {
+			ret = tz->ops->bind(tz, pos);
+			if (ret)
+				print_bind_err_msg(tz, pos, ret);
+		}
+		goto exit;
+	}
+
+	if (!tzp || !tzp->tbp)
+		goto exit;
+
+	list_for_each_entry(pos, &thermal_cdev_list, node) {
+		for (i = 0; i < tzp->num_tbps; i++) {
+			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
+				continue;
+			if (tzp->tbp[i].match(tz, pos))
+				continue;
+			tzp->tbp[i].cdev = pos;
+			__bind(tz, tzp->tbp[i].trip_mask, pos);
+		}
+	}
+exit:
+	mutex_unlock(&thermal_list_lock);
+}
+
+static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
+					    int delay)
+{
+	if (delay > 1000)
+		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
+				 round_jiffies(msecs_to_jiffies(delay)));
+	else if (delay)
+		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
+				 msecs_to_jiffies(delay));
+	else
+		cancel_delayed_work(&tz->poll_queue);
+}
+
+static void monitor_thermal_zone(struct thermal_zone_device *tz)
+{
+	mutex_lock(&tz->lock);
+
+	if (tz->passive)
+		thermal_zone_device_set_polling(tz, tz->passive_delay);
+	else if (tz->polling_delay)
+		thermal_zone_device_set_polling(tz, tz->polling_delay);
+	else
+		thermal_zone_device_set_polling(tz, 0);
+
+	mutex_unlock(&tz->lock);
+}
+
+static void handle_non_critical_trips(struct thermal_zone_device *tz,
+			int trip, enum thermal_trip_type trip_type)
+{
+	if (tz->governor)
+		tz->governor->throttle(tz, trip);
+}
+
+static void handle_critical_trips(struct thermal_zone_device *tz,
+				int trip, enum thermal_trip_type trip_type)
+{
+	long trip_temp;
+
+	tz->ops->get_trip_temp(tz, trip, &trip_temp);
+
+	/* If we have not crossed the trip_temp, we do not care. */
+	if (tz->temperature < trip_temp)
+		return;
+
+	if (tz->ops->notify)
+		tz->ops->notify(tz, trip, trip_type);
+
+	if (trip_type == THERMAL_TRIP_CRITICAL) {
+		dev_emerg(&tz->device,
+			  "critical temperature reached(%d C),shutting down\n",
+			  tz->temperature / 1000);
+		orderly_poweroff(true);
+	}
+}
+
+static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
+{
+	enum thermal_trip_type type;
+
+	tz->ops->get_trip_type(tz, trip, &type);
+
+	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
+		handle_critical_trips(tz, trip, type);
+	else
+		handle_non_critical_trips(tz, trip, type);
+	/*
+	 * Alright, we handled this trip successfully.
+	 * So, start monitoring again.
+	 */
+	monitor_thermal_zone(tz);
+}
+
+static int thermal_zone_get_temp(struct thermal_zone_device *tz,
+				unsigned long *temp)
+{
+	int ret = 0;
+#ifdef CONFIG_THERMAL_EMULATION
+	int count;
+	unsigned long crit_temp = -1UL;
+	enum thermal_trip_type type;
+#endif
+
+	mutex_lock(&tz->lock);
+
+	ret = tz->ops->get_temp(tz, temp);
+#ifdef CONFIG_THERMAL_EMULATION
+	if (!tz->emul_temperature)
+		goto skip_emul;
+
+	for (count = 0; count < tz->trips; count++) {
+		ret = tz->ops->get_trip_type(tz, count, &type);
+		if (!ret && type == THERMAL_TRIP_CRITICAL) {
+			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
+			break;
+		}
+	}
+
+	if (ret)
+		goto skip_emul;
+
+	if (*temp < crit_temp)
+		*temp = tz->emul_temperature;
+skip_emul:
+#endif
+	mutex_unlock(&tz->lock);
+	return ret;
+}
+
+static void update_temperature(struct thermal_zone_device *tz)
+{
+	long temp;
+	int ret;
+
+	ret = thermal_zone_get_temp(tz, &temp);
+	if (ret) {
+		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
+			 tz->id);
+		return;
+	}
+
+	mutex_lock(&tz->lock);
+	tz->last_temperature = tz->temperature;
+	tz->temperature = temp;
+	mutex_unlock(&tz->lock);
+}
+
+void thermal_zone_device_update(struct thermal_zone_device *tz)
+{
+	int count;
+
+	update_temperature(tz);
+
+	for (count = 0; count < tz->trips; count++)
+		handle_thermal_trip(tz, count);
+}
+EXPORT_SYMBOL(thermal_zone_device_update);
+
+static void thermal_zone_device_check(struct work_struct *work)
+{
+	struct thermal_zone_device *tz = container_of(work, struct
+						      thermal_zone_device,
+						      poll_queue.work);
+	thermal_zone_device_update(tz);
+}
+
+/* sys I/F for thermal zone */
+
+#define to_thermal_zone(_dev) \
+	container_of(_dev, struct thermal_zone_device, device)
+
+static ssize_t
+type_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+	return sprintf(buf, "%s\n", tz->type);
+}
+
+static ssize_t
+temp_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	long temperature;
+	int ret;
+
+	ret = thermal_zone_get_temp(tz, &temperature);
+
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%ld\n", temperature);
+}
+
+static ssize_t
+mode_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	enum thermal_device_mode mode;
+	int result;
+
+	if (!tz->ops->get_mode)
+		return -EPERM;
+
+	result = tz->ops->get_mode(tz, &mode);
+	if (result)
+		return result;
+
+	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
+		       : "disabled");
+}
+
+static ssize_t
+mode_store(struct device *dev, struct device_attribute *attr,
+	   const char *buf, size_t count)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	int result;
+
+	if (!tz->ops->set_mode)
+		return -EPERM;
+
+	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
+		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
+	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
+		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
+	else
+		result = -EINVAL;
+
+	if (result)
+		return result;
+
+	return count;
+}
+
+static ssize_t
+trip_point_type_show(struct device *dev, struct device_attribute *attr,
+		     char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	enum thermal_trip_type type;
+	int trip, result;
+
+	if (!tz->ops->get_trip_type)
+		return -EPERM;
+
+	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
+		return -EINVAL;
+
+	result = tz->ops->get_trip_type(tz, trip, &type);
+	if (result)
+		return result;
+
+	switch (type) {
+	case THERMAL_TRIP_CRITICAL:
+		return sprintf(buf, "critical\n");
+	case THERMAL_TRIP_HOT:
+		return sprintf(buf, "hot\n");
+	case THERMAL_TRIP_PASSIVE:
+		return sprintf(buf, "passive\n");
+	case THERMAL_TRIP_ACTIVE:
+		return sprintf(buf, "active\n");
+	default:
+		return sprintf(buf, "unknown\n");
+	}
+}
+
+static ssize_t
+trip_point_temp_store(struct device *dev, struct device_attribute *attr,
+		     const char *buf, size_t count)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	int trip, ret;
+	unsigned long temperature;
+
+	if (!tz->ops->set_trip_temp)
+		return -EPERM;
+
+	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
+		return -EINVAL;
+
+	if (kstrtoul(buf, 10, &temperature))
+		return -EINVAL;
+
+	ret = tz->ops->set_trip_temp(tz, trip, temperature);
+
+	return ret ? ret : count;
+}
+
+static ssize_t
+trip_point_temp_show(struct device *dev, struct device_attribute *attr,
+		     char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	int trip, ret;
+	long temperature;
+
+	if (!tz->ops->get_trip_temp)
+		return -EPERM;
+
+	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
+		return -EINVAL;
+
+	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
+
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%ld\n", temperature);
+}
+
+static ssize_t
+trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
+			const char *buf, size_t count)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	int trip, ret;
+	unsigned long temperature;
+
+	if (!tz->ops->set_trip_hyst)
+		return -EPERM;
+
+	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
+		return -EINVAL;
+
+	if (kstrtoul(buf, 10, &temperature))
+		return -EINVAL;
+
+	/*
+	 * We are not doing any check on the 'temperature' value
+	 * here. The driver implementing 'set_trip_hyst' has to
+	 * take care of this.
+	 */
+	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
+
+	return ret ? ret : count;
+}
+
+static ssize_t
+trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	int trip, ret;
+	unsigned long temperature;
+
+	if (!tz->ops->get_trip_hyst)
+		return -EPERM;
+
+	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
+		return -EINVAL;
+
+	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
+
+	return ret ? ret : sprintf(buf, "%ld\n", temperature);
+}
+
+static ssize_t
+passive_store(struct device *dev, struct device_attribute *attr,
+		    const char *buf, size_t count)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	struct thermal_cooling_device *cdev = NULL;
+	int state;
+
+	if (!sscanf(buf, "%d\n", &state))
+		return -EINVAL;
+
+	/* sanity check: values below 1000 millicelcius don't make sense
+	 * and can cause the system to go into a thermal heart attack
+	 */
+	if (state && state < 1000)
+		return -EINVAL;
+
+	if (state && !tz->forced_passive) {
+		mutex_lock(&thermal_list_lock);
+		list_for_each_entry(cdev, &thermal_cdev_list, node) {
+			if (!strncmp("Processor", cdev->type,
+				     sizeof("Processor")))
+				thermal_zone_bind_cooling_device(tz,
+						THERMAL_TRIPS_NONE, cdev,
+						THERMAL_NO_LIMIT,
+						THERMAL_NO_LIMIT);
+		}
+		mutex_unlock(&thermal_list_lock);
+		if (!tz->passive_delay)
+			tz->passive_delay = 1000;
+	} else if (!state && tz->forced_passive) {
+		mutex_lock(&thermal_list_lock);
+		list_for_each_entry(cdev, &thermal_cdev_list, node) {
+			if (!strncmp("Processor", cdev->type,
+				     sizeof("Processor")))
+				thermal_zone_unbind_cooling_device(tz,
+								   THERMAL_TRIPS_NONE,
+								   cdev);
+		}
+		mutex_unlock(&thermal_list_lock);
+		tz->passive_delay = 0;
+	}
+
+	tz->forced_passive = state;
+
+	thermal_zone_device_update(tz);
+
+	return count;
+}
+
+static ssize_t
+passive_show(struct device *dev, struct device_attribute *attr,
+		   char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+	return sprintf(buf, "%d\n", tz->forced_passive);
+}
+
+static ssize_t
+policy_store(struct device *dev, struct device_attribute *attr,
+		    const char *buf, size_t count)
+{
+	int ret = -EINVAL;
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	struct thermal_governor *gov;
+
+	mutex_lock(&thermal_governor_lock);
+
+	gov = __find_governor(buf);
+	if (!gov)
+		goto exit;
+
+	tz->governor = gov;
+	ret = count;
+
+exit:
+	mutex_unlock(&thermal_governor_lock);
+	return ret;
+}
+
+static ssize_t
+policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+	return sprintf(buf, "%s\n", tz->governor->name);
+}
+
+#ifdef CONFIG_THERMAL_EMULATION
+static ssize_t
+emul_temp_store(struct device *dev, struct device_attribute *attr,
+		     const char *buf, size_t count)
+{
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
+	int ret = 0;
+	unsigned long temperature;
+
+	if (kstrtoul(buf, 10, &temperature))
+		return -EINVAL;
+
+	if (!tz->ops->set_emul_temp) {
+		mutex_lock(&tz->lock);
+		tz->emul_temperature = temperature;
+		mutex_unlock(&tz->lock);
+	} else {
+		ret = tz->ops->set_emul_temp(tz, temperature);
+	}
+
+	return ret ? ret : count;
+}
+static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
+#endif/*CONFIG_THERMAL_EMULATION*/
+
+static DEVICE_ATTR(type, 0444, type_show, NULL);
+static DEVICE_ATTR(temp, 0444, temp_show, NULL);
+static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
+static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
+static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
+
+/* sys I/F for cooling device */
+#define to_cooling_device(_dev)	\
+	container_of(_dev, struct thermal_cooling_device, device)
+
+static ssize_t
+thermal_cooling_device_type_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	struct thermal_cooling_device *cdev = to_cooling_device(dev);
+
+	return sprintf(buf, "%s\n", cdev->type);
+}
+
+static ssize_t
+thermal_cooling_device_max_state_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct thermal_cooling_device *cdev = to_cooling_device(dev);
+	unsigned long state;
+	int ret;
+
+	ret = cdev->ops->get_max_state(cdev, &state);
+	if (ret)
+		return ret;
+	return sprintf(buf, "%ld\n", state);
+}
+
+static ssize_t
+thermal_cooling_device_cur_state_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct thermal_cooling_device *cdev = to_cooling_device(dev);
+	unsigned long state;
+	int ret;
+
+	ret = cdev->ops->get_cur_state(cdev, &state);
+	if (ret)
+		return ret;
+	return sprintf(buf, "%ld\n", state);
+}
+
+static ssize_t
+thermal_cooling_device_cur_state_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t count)
+{
+	struct thermal_cooling_device *cdev = to_cooling_device(dev);
+	unsigned long state;
+	int result;
+
+	if (!sscanf(buf, "%ld\n", &state))
+		return -EINVAL;
+
+	if ((long)state < 0)
+		return -EINVAL;
+
+	result = cdev->ops->set_cur_state(cdev, state);
+	if (result)
+		return result;
+	return count;
+}
+
+static struct device_attribute dev_attr_cdev_type =
+__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
+static DEVICE_ATTR(max_state, 0444,
+		   thermal_cooling_device_max_state_show, NULL);
+static DEVICE_ATTR(cur_state, 0644,
+		   thermal_cooling_device_cur_state_show,
+		   thermal_cooling_device_cur_state_store);
+
+static ssize_t
+thermal_cooling_device_trip_point_show(struct device *dev,
+				       struct device_attribute *attr, char *buf)
+{
+	struct thermal_instance *instance;
+
+	instance =
+	    container_of(attr, struct thermal_instance, attr);
+
+	if (instance->trip == THERMAL_TRIPS_NONE)
+		return sprintf(buf, "-1\n");
+	else
+		return sprintf(buf, "%d\n", instance->trip);
+}
+
+/* Device management */
+
+#if defined(CONFIG_THERMAL_HWMON)
+
+/* hwmon sys I/F */
+#include <linux/hwmon.h>
+
+/* thermal zone devices with the same type share one hwmon device */
+struct thermal_hwmon_device {
+	char type[THERMAL_NAME_LENGTH];
+	struct device *device;
+	int count;
+	struct list_head tz_list;
+	struct list_head node;
+};
+
+struct thermal_hwmon_attr {
+	struct device_attribute attr;
+	char name[16];
+};
+
+/* one temperature input for each thermal zone */
+struct thermal_hwmon_temp {
+	struct list_head hwmon_node;
+	struct thermal_zone_device *tz;
+	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
+	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
+};
+
+static LIST_HEAD(thermal_hwmon_list);
+
+static ssize_t
+name_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
+	return sprintf(buf, "%s\n", hwmon->type);
+}
+static DEVICE_ATTR(name, 0444, name_show, NULL);
+
+static ssize_t
+temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	long temperature;
+	int ret;
+	struct thermal_hwmon_attr *hwmon_attr
+			= container_of(attr, struct thermal_hwmon_attr, attr);
+	struct thermal_hwmon_temp *temp
+			= container_of(hwmon_attr, struct thermal_hwmon_temp,
+				       temp_input);
+	struct thermal_zone_device *tz = temp->tz;
+
+	ret = thermal_zone_get_temp(tz, &temperature);
+
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%ld\n", temperature);
+}
+
+static ssize_t
+temp_crit_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
+{
+	struct thermal_hwmon_attr *hwmon_attr
+			= container_of(attr, struct thermal_hwmon_attr, attr);
+	struct thermal_hwmon_temp *temp
+			= container_of(hwmon_attr, struct thermal_hwmon_temp,
+				       temp_crit);
+	struct thermal_zone_device *tz = temp->tz;
+	long temperature;
+	int ret;
+
+	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%ld\n", temperature);
+}
+
+
+static struct thermal_hwmon_device *
+thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+
+	mutex_lock(&thermal_list_lock);
+	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
+		if (!strcmp(hwmon->type, tz->type)) {
+			mutex_unlock(&thermal_list_lock);
+			return hwmon;
+		}
+	mutex_unlock(&thermal_list_lock);
+
+	return NULL;
+}
+
+/* Find the temperature input matching a given thermal zone */
+static struct thermal_hwmon_temp *
+thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
+			  const struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_temp *temp;
+
+	mutex_lock(&thermal_list_lock);
+	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
+		if (temp->tz == tz) {
+			mutex_unlock(&thermal_list_lock);
+			return temp;
+		}
+	mutex_unlock(&thermal_list_lock);
+
+	return NULL;
+}
+
+static int
+thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+	struct thermal_hwmon_temp *temp;
+	int new_hwmon_device = 1;
+	int result;
+
+	hwmon = thermal_hwmon_lookup_by_type(tz);
+	if (hwmon) {
+		new_hwmon_device = 0;
+		goto register_sys_interface;
+	}
+
+	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
+	if (!hwmon)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&hwmon->tz_list);
+	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
+	hwmon->device = hwmon_device_register(NULL);
+	if (IS_ERR(hwmon->device)) {
+		result = PTR_ERR(hwmon->device);
+		goto free_mem;
+	}
+	dev_set_drvdata(hwmon->device, hwmon);
+	result = device_create_file(hwmon->device, &dev_attr_name);
+	if (result)
+		goto free_mem;
+
+ register_sys_interface:
+	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
+	if (!temp) {
+		result = -ENOMEM;
+		goto unregister_name;
+	}
+
+	temp->tz = tz;
+	hwmon->count++;
+
+	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
+		 "temp%d_input", hwmon->count);
+	temp->temp_input.attr.attr.name = temp->temp_input.name;
+	temp->temp_input.attr.attr.mode = 0444;
+	temp->temp_input.attr.show = temp_input_show;
+	sysfs_attr_init(&temp->temp_input.attr.attr);
+	result = device_create_file(hwmon->device, &temp->temp_input.attr);
+	if (result)
+		goto free_temp_mem;
+
+	if (tz->ops->get_crit_temp) {
+		unsigned long temperature;
+		if (!tz->ops->get_crit_temp(tz, &temperature)) {
+			snprintf(temp->temp_crit.name,
+				 sizeof(temp->temp_crit.name),
+				"temp%d_crit", hwmon->count);
+			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
+			temp->temp_crit.attr.attr.mode = 0444;
+			temp->temp_crit.attr.show = temp_crit_show;
+			sysfs_attr_init(&temp->temp_crit.attr.attr);
+			result = device_create_file(hwmon->device,
+						    &temp->temp_crit.attr);
+			if (result)
+				goto unregister_input;
+		}
+	}
+
+	mutex_lock(&thermal_list_lock);
+	if (new_hwmon_device)
+		list_add_tail(&hwmon->node, &thermal_hwmon_list);
+	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
+	mutex_unlock(&thermal_list_lock);
+
+	return 0;
+
+ unregister_input:
+	device_remove_file(hwmon->device, &temp->temp_input.attr);
+ free_temp_mem:
+	kfree(temp);
+ unregister_name:
+	if (new_hwmon_device) {
+		device_remove_file(hwmon->device, &dev_attr_name);
+		hwmon_device_unregister(hwmon->device);
+	}
+ free_mem:
+	if (new_hwmon_device)
+		kfree(hwmon);
+
+	return result;
+}
+
+static void
+thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+	struct thermal_hwmon_temp *temp;
+
+	hwmon = thermal_hwmon_lookup_by_type(tz);
+	if (unlikely(!hwmon)) {
+		/* Should never happen... */
+		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
+		return;
+	}
+
+	temp = thermal_hwmon_lookup_temp(hwmon, tz);
+	if (unlikely(!temp)) {
+		/* Should never happen... */
+		dev_dbg(&tz->device, "temperature input lookup failed!\n");
+		return;
+	}
+
+	device_remove_file(hwmon->device, &temp->temp_input.attr);
+	if (tz->ops->get_crit_temp)
+		device_remove_file(hwmon->device, &temp->temp_crit.attr);
+
+	mutex_lock(&thermal_list_lock);
+	list_del(&temp->hwmon_node);
+	kfree(temp);
+	if (!list_empty(&hwmon->tz_list)) {
+		mutex_unlock(&thermal_list_lock);
+		return;
+	}
+	list_del(&hwmon->node);
+	mutex_unlock(&thermal_list_lock);
+
+	device_remove_file(hwmon->device, &dev_attr_name);
+	hwmon_device_unregister(hwmon->device);
+	kfree(hwmon);
+}
+#else
+static int
+thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	return 0;
+}
+
+static void
+thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+}
+#endif
+
+/**
+ * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
+ * @tz:		thermal zone device
+ * @trip:	indicates which trip point the cooling devices is
+ *		associated with in this thermal zone.
+ * @cdev:	thermal cooling device
+ *
+ * This function is usually called in the thermal zone device .bind callback.
+ */
+int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
+				     int trip,
+				     struct thermal_cooling_device *cdev,
+				     unsigned long upper, unsigned long lower)
+{
+	struct thermal_instance *dev;
+	struct thermal_instance *pos;
+	struct thermal_zone_device *pos1;
+	struct thermal_cooling_device *pos2;
+	unsigned long max_state;
+	int result;
+
+	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
+		return -EINVAL;
+
+	list_for_each_entry(pos1, &thermal_tz_list, node) {
+		if (pos1 == tz)
+			break;
+	}
+	list_for_each_entry(pos2, &thermal_cdev_list, node) {
+		if (pos2 == cdev)
+			break;
+	}
+
+	if (tz != pos1 || cdev != pos2)
+		return -EINVAL;
+
+	cdev->ops->get_max_state(cdev, &max_state);
+
+	/* lower default 0, upper default max_state */
+	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
+	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
+
+	if (lower > upper || upper > max_state)
+		return -EINVAL;
+
+	dev =
+	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+	dev->tz = tz;
+	dev->cdev = cdev;
+	dev->trip = trip;
+	dev->upper = upper;
+	dev->lower = lower;
+	dev->target = THERMAL_NO_TARGET;
+
+	result = get_idr(&tz->idr, &tz->lock, &dev->id);
+	if (result)
+		goto free_mem;
+
+	sprintf(dev->name, "cdev%d", dev->id);
+	result =
+	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
+	if (result)
+		goto release_idr;
+
+	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
+	sysfs_attr_init(&dev->attr.attr);
+	dev->attr.attr.name = dev->attr_name;
+	dev->attr.attr.mode = 0444;
+	dev->attr.show = thermal_cooling_device_trip_point_show;
+	result = device_create_file(&tz->device, &dev->attr);
+	if (result)
+		goto remove_symbol_link;
+
+	mutex_lock(&tz->lock);
+	mutex_lock(&cdev->lock);
+	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
+	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
+		result = -EEXIST;
+		break;
+	}
+	if (!result) {
+		list_add_tail(&dev->tz_node, &tz->thermal_instances);
+		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
+	}
+	mutex_unlock(&cdev->lock);
+	mutex_unlock(&tz->lock);
+
+	if (!result)
+		return 0;
+
+	device_remove_file(&tz->device, &dev->attr);
+remove_symbol_link:
+	sysfs_remove_link(&tz->device.kobj, dev->name);
+release_idr:
+	release_idr(&tz->idr, &tz->lock, dev->id);
+free_mem:
+	kfree(dev);
+	return result;
+}
+EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
+
+/**
+ * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
+ * @tz:		thermal zone device
+ * @trip:	indicates which trip point the cooling devices is
+ *		associated with in this thermal zone.
+ * @cdev:	thermal cooling device
+ *
+ * This function is usually called in the thermal zone device .unbind callback.
+ */
+int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
+				       int trip,
+				       struct thermal_cooling_device *cdev)
+{
+	struct thermal_instance *pos, *next;
+
+	mutex_lock(&tz->lock);
+	mutex_lock(&cdev->lock);
+	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
+		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
+			list_del(&pos->tz_node);
+			list_del(&pos->cdev_node);
+			mutex_unlock(&cdev->lock);
+			mutex_unlock(&tz->lock);
+			goto unbind;
+		}
+	}
+	mutex_unlock(&cdev->lock);
+	mutex_unlock(&tz->lock);
+
+	return -ENODEV;
+
+unbind:
+	device_remove_file(&tz->device, &pos->attr);
+	sysfs_remove_link(&tz->device.kobj, pos->name);
+	release_idr(&tz->idr, &tz->lock, pos->id);
+	kfree(pos);
+	return 0;
+}
+EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
+
+static void thermal_release(struct device *dev)
+{
+	struct thermal_zone_device *tz;
+	struct thermal_cooling_device *cdev;
+
+	if (!strncmp(dev_name(dev), "thermal_zone",
+		     sizeof("thermal_zone") - 1)) {
+		tz = to_thermal_zone(dev);
+		kfree(tz);
+	} else {
+		cdev = to_cooling_device(dev);
+		kfree(cdev);
+	}
+}
+
+static struct class thermal_class = {
+	.name = "thermal",
+	.dev_release = thermal_release,
+};
+
+/**
+ * thermal_cooling_device_register - register a new thermal cooling device
+ * @type:	the thermal cooling device type.
+ * @devdata:	device private data.
+ * @ops:		standard thermal cooling devices callbacks.
+ */
+struct thermal_cooling_device *
+thermal_cooling_device_register(char *type, void *devdata,
+				const struct thermal_cooling_device_ops *ops)
+{
+	struct thermal_cooling_device *cdev;
+	int result;
+
+	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
+		return ERR_PTR(-EINVAL);
+
+	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
+	    !ops->set_cur_state)
+		return ERR_PTR(-EINVAL);
+
+	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
+	if (!cdev)
+		return ERR_PTR(-ENOMEM);
+
+	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
+	if (result) {
+		kfree(cdev);
+		return ERR_PTR(result);
+	}
+
+	strcpy(cdev->type, type ? : "");
+	mutex_init(&cdev->lock);
+	INIT_LIST_HEAD(&cdev->thermal_instances);
+	cdev->ops = ops;
+	cdev->updated = true;
+	cdev->device.class = &thermal_class;
+	cdev->devdata = devdata;
+	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
+	result = device_register(&cdev->device);
+	if (result) {
+		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
+		kfree(cdev);
+		return ERR_PTR(result);
+	}
+
+	/* sys I/F */
+	if (type) {
+		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
+		if (result)
+			goto unregister;
+	}
+
+	result = device_create_file(&cdev->device, &dev_attr_max_state);
+	if (result)
+		goto unregister;
+
+	result = device_create_file(&cdev->device, &dev_attr_cur_state);
+	if (result)
+		goto unregister;
+
+	/* Add 'this' new cdev to the global cdev list */
+	mutex_lock(&thermal_list_lock);
+	list_add(&cdev->node, &thermal_cdev_list);
+	mutex_unlock(&thermal_list_lock);
+
+	/* Update binding information for 'this' new cdev */
+	bind_cdev(cdev);
+
+	return cdev;
+
+unregister:
+	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
+	device_unregister(&cdev->device);
+	return ERR_PTR(result);
+}
+EXPORT_SYMBOL(thermal_cooling_device_register);
+
+/**
+ * thermal_cooling_device_unregister - removes the registered thermal cooling device
+ * @cdev:	the thermal cooling device to remove.
+ *
+ * thermal_cooling_device_unregister() must be called when the device is no
+ * longer needed.
+ */
+void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
+{
+	int i;
+	const struct thermal_zone_params *tzp;
+	struct thermal_zone_device *tz;
+	struct thermal_cooling_device *pos = NULL;
+
+	if (!cdev)
+		return;
+
+	mutex_lock(&thermal_list_lock);
+	list_for_each_entry(pos, &thermal_cdev_list, node)
+	    if (pos == cdev)
+		break;
+	if (pos != cdev) {
+		/* thermal cooling device not found */
+		mutex_unlock(&thermal_list_lock);
+		return;
+	}
+	list_del(&cdev->node);
+
+	/* Unbind all thermal zones associated with 'this' cdev */
+	list_for_each_entry(tz, &thermal_tz_list, node) {
+		if (tz->ops->unbind) {
+			tz->ops->unbind(tz, cdev);
+			continue;
+		}
+
+		if (!tz->tzp || !tz->tzp->tbp)
+			continue;
+
+		tzp = tz->tzp;
+		for (i = 0; i < tzp->num_tbps; i++) {
+			if (tzp->tbp[i].cdev == cdev) {
+				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
+				tzp->tbp[i].cdev = NULL;
+			}
+		}
+	}
+
+	mutex_unlock(&thermal_list_lock);
+
+	if (cdev->type[0])
+		device_remove_file(&cdev->device, &dev_attr_cdev_type);
+	device_remove_file(&cdev->device, &dev_attr_max_state);
+	device_remove_file(&cdev->device, &dev_attr_cur_state);
+
+	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
+	device_unregister(&cdev->device);
+	return;
+}
+EXPORT_SYMBOL(thermal_cooling_device_unregister);
+
+void thermal_cdev_update(struct thermal_cooling_device *cdev)
+{
+	struct thermal_instance *instance;
+	unsigned long target = 0;
+
+	/* cooling device is updated*/
+	if (cdev->updated)
+		return;
+
+	mutex_lock(&cdev->lock);
+	/* Make sure cdev enters the deepest cooling state */
+	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
+		if (instance->target == THERMAL_NO_TARGET)
+			continue;
+		if (instance->target > target)
+			target = instance->target;
+	}
+	mutex_unlock(&cdev->lock);
+	cdev->ops->set_cur_state(cdev, target);
+	cdev->updated = true;
+}
+EXPORT_SYMBOL(thermal_cdev_update);
+
+/**
+ * notify_thermal_framework - Sensor drivers use this API to notify framework
+ * @tz:		thermal zone device
+ * @trip:	indicates which trip point has been crossed
+ *
+ * This function handles the trip events from sensor drivers. It starts
+ * throttling the cooling devices according to the policy configured.
+ * For CRITICAL and HOT trip points, this notifies the respective drivers,
+ * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
+ * The throttling policy is based on the configured platform data; if no
+ * platform data is provided, this uses the step_wise throttling policy.
+ */
+void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
+{
+	handle_thermal_trip(tz, trip);
+}
+EXPORT_SYMBOL(notify_thermal_framework);
+
+/**
+ * create_trip_attrs - create attributes for trip points
+ * @tz:		the thermal zone device
+ * @mask:	Writeable trip point bitmap.
+ */
+static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
+{
+	int indx;
+	int size = sizeof(struct thermal_attr) * tz->trips;
+
+	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
+	if (!tz->trip_type_attrs)
+		return -ENOMEM;
+
+	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
+	if (!tz->trip_temp_attrs) {
+		kfree(tz->trip_type_attrs);
+		return -ENOMEM;
+	}
+
+	if (tz->ops->get_trip_hyst) {
+		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
+		if (!tz->trip_hyst_attrs) {
+			kfree(tz->trip_type_attrs);
+			kfree(tz->trip_temp_attrs);
+			return -ENOMEM;
+		}
+	}
+
+
+	for (indx = 0; indx < tz->trips; indx++) {
+		/* create trip type attribute */
+		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
+			 "trip_point_%d_type", indx);
+
+		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
+		tz->trip_type_attrs[indx].attr.attr.name =
+						tz->trip_type_attrs[indx].name;
+		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
+		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
+
+		device_create_file(&tz->device,
+				   &tz->trip_type_attrs[indx].attr);
+
+		/* create trip temp attribute */
+		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
+			 "trip_point_%d_temp", indx);
+
+		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
+		tz->trip_temp_attrs[indx].attr.attr.name =
+						tz->trip_temp_attrs[indx].name;
+		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
+		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
+		if (mask & (1 << indx)) {
+			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
+			tz->trip_temp_attrs[indx].attr.store =
+							trip_point_temp_store;
+		}
+
+		device_create_file(&tz->device,
+				   &tz->trip_temp_attrs[indx].attr);
+
+		/* create Optional trip hyst attribute */
+		if (!tz->ops->get_trip_hyst)
+			continue;
+		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
+			 "trip_point_%d_hyst", indx);
+
+		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
+		tz->trip_hyst_attrs[indx].attr.attr.name =
+					tz->trip_hyst_attrs[indx].name;
+		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
+		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
+		if (tz->ops->set_trip_hyst) {
+			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
+			tz->trip_hyst_attrs[indx].attr.store =
+					trip_point_hyst_store;
+		}
+
+		device_create_file(&tz->device,
+				   &tz->trip_hyst_attrs[indx].attr);
+	}
+	return 0;
+}
+
+static void remove_trip_attrs(struct thermal_zone_device *tz)
+{
+	int indx;
+
+	for (indx = 0; indx < tz->trips; indx++) {
+		device_remove_file(&tz->device,
+				   &tz->trip_type_attrs[indx].attr);
+		device_remove_file(&tz->device,
+				   &tz->trip_temp_attrs[indx].attr);
+		if (tz->ops->get_trip_hyst)
+			device_remove_file(&tz->device,
+				  &tz->trip_hyst_attrs[indx].attr);
+	}
+	kfree(tz->trip_type_attrs);
+	kfree(tz->trip_temp_attrs);
+	kfree(tz->trip_hyst_attrs);
+}
+
+/**
+ * thermal_zone_device_register - register a new thermal zone device
+ * @type:	the thermal zone device type
+ * @trips:	the number of trip points the thermal zone support
+ * @mask:	a bit string indicating the writeablility of trip points
+ * @devdata:	private device data
+ * @ops:	standard thermal zone device callbacks
+ * @tzp:	thermal zone platform parameters
+ * @passive_delay: number of milliseconds to wait between polls when
+ *		   performing passive cooling
+ * @polling_delay: number of milliseconds to wait between polls when checking
+ *		   whether trip points have been crossed (0 for interrupt
+ *		   driven systems)
+ *
+ * thermal_zone_device_unregister() must be called when the device is no
+ * longer needed. The passive cooling depends on the .get_trend() return value.
+ */
+struct thermal_zone_device *thermal_zone_device_register(const char *type,
+	int trips, int mask, void *devdata,
+	const struct thermal_zone_device_ops *ops,
+	const struct thermal_zone_params *tzp,
+	int passive_delay, int polling_delay)
+{
+	struct thermal_zone_device *tz;
+	enum thermal_trip_type trip_type;
+	int result;
+	int count;
+	int passive = 0;
+
+	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
+		return ERR_PTR(-EINVAL);
+
+	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
+		return ERR_PTR(-EINVAL);
+
+	if (!ops || !ops->get_temp)
+		return ERR_PTR(-EINVAL);
+
+	if (trips > 0 && !ops->get_trip_type)
+		return ERR_PTR(-EINVAL);
+
+	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
+	if (!tz)
+		return ERR_PTR(-ENOMEM);
+
+	INIT_LIST_HEAD(&tz->thermal_instances);
+	idr_init(&tz->idr);
+	mutex_init(&tz->lock);
+	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
+	if (result) {
+		kfree(tz);
+		return ERR_PTR(result);
+	}
+
+	strcpy(tz->type, type ? : "");
+	tz->ops = ops;
+	tz->tzp = tzp;
+	tz->device.class = &thermal_class;
+	tz->devdata = devdata;
+	tz->trips = trips;
+	tz->passive_delay = passive_delay;
+	tz->polling_delay = polling_delay;
+
+	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
+	result = device_register(&tz->device);
+	if (result) {
+		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
+		kfree(tz);
+		return ERR_PTR(result);
+	}
+
+	/* sys I/F */
+	if (type) {
+		result = device_create_file(&tz->device, &dev_attr_type);
+		if (result)
+			goto unregister;
+	}
+
+	result = device_create_file(&tz->device, &dev_attr_temp);
+	if (result)
+		goto unregister;
+
+	if (ops->get_mode) {
+		result = device_create_file(&tz->device, &dev_attr_mode);
+		if (result)
+			goto unregister;
+	}
+
+	result = create_trip_attrs(tz, mask);
+	if (result)
+		goto unregister;
+
+	for (count = 0; count < trips; count++) {
+		tz->ops->get_trip_type(tz, count, &trip_type);
+		if (trip_type == THERMAL_TRIP_PASSIVE)
+			passive = 1;
+	}
+
+	if (!passive) {
+		result = device_create_file(&tz->device, &dev_attr_passive);
+		if (result)
+			goto unregister;
+	}
+
+#ifdef CONFIG_THERMAL_EMULATION
+	result = device_create_file(&tz->device, &dev_attr_emul_temp);
+	if (result)
+		goto unregister;
+#endif
+	/* Create policy attribute */
+	result = device_create_file(&tz->device, &dev_attr_policy);
+	if (result)
+		goto unregister;
+
+	/* Update 'this' zone's governor information */
+	mutex_lock(&thermal_governor_lock);
+
+	if (tz->tzp)
+		tz->governor = __find_governor(tz->tzp->governor_name);
+	else
+		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
+
+	mutex_unlock(&thermal_governor_lock);
+
+	result = thermal_add_hwmon_sysfs(tz);
+	if (result)
+		goto unregister;
+
+	mutex_lock(&thermal_list_lock);
+	list_add_tail(&tz->node, &thermal_tz_list);
+	mutex_unlock(&thermal_list_lock);
+
+	/* Bind cooling devices for this zone */
+	bind_tz(tz);
+
+	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
+
+	thermal_zone_device_update(tz);
+
+	if (!result)
+		return tz;
+
+unregister:
+	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
+	device_unregister(&tz->device);
+	return ERR_PTR(result);
+}
+EXPORT_SYMBOL(thermal_zone_device_register);
+
+/**
+ * thermal_device_unregister - removes the registered thermal zone device
+ * @tz: the thermal zone device to remove
+ */
+void thermal_zone_device_unregister(struct thermal_zone_device *tz)
+{
+	int i;
+	const struct thermal_zone_params *tzp;
+	struct thermal_cooling_device *cdev;
+	struct thermal_zone_device *pos = NULL;
+
+	if (!tz)
+		return;
+
+	tzp = tz->tzp;
+
+	mutex_lock(&thermal_list_lock);
+	list_for_each_entry(pos, &thermal_tz_list, node)
+	    if (pos == tz)
+		break;
+	if (pos != tz) {
+		/* thermal zone device not found */
+		mutex_unlock(&thermal_list_lock);
+		return;
+	}
+	list_del(&tz->node);
+
+	/* Unbind all cdevs associated with 'this' thermal zone */
+	list_for_each_entry(cdev, &thermal_cdev_list, node) {
+		if (tz->ops->unbind) {
+			tz->ops->unbind(tz, cdev);
+			continue;
+		}
+
+		if (!tzp || !tzp->tbp)
+			break;
+
+		for (i = 0; i < tzp->num_tbps; i++) {
+			if (tzp->tbp[i].cdev == cdev) {
+				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
+				tzp->tbp[i].cdev = NULL;
+			}
+		}
+	}
+
+	mutex_unlock(&thermal_list_lock);
+
+	thermal_zone_device_set_polling(tz, 0);
+
+	if (tz->type[0])
+		device_remove_file(&tz->device, &dev_attr_type);
+	device_remove_file(&tz->device, &dev_attr_temp);
+	if (tz->ops->get_mode)
+		device_remove_file(&tz->device, &dev_attr_mode);
+	device_remove_file(&tz->device, &dev_attr_policy);
+	remove_trip_attrs(tz);
+	tz->governor = NULL;
+
+	thermal_remove_hwmon_sysfs(tz);
+	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
+	idr_destroy(&tz->idr);
+	mutex_destroy(&tz->lock);
+	device_unregister(&tz->device);
+	return;
+}
+EXPORT_SYMBOL(thermal_zone_device_unregister);
+
+#ifdef CONFIG_NET
+static struct genl_family thermal_event_genl_family = {
+	.id = GENL_ID_GENERATE,
+	.name = THERMAL_GENL_FAMILY_NAME,
+	.version = THERMAL_GENL_VERSION,
+	.maxattr = THERMAL_GENL_ATTR_MAX,
+};
+
+static struct genl_multicast_group thermal_event_mcgrp = {
+	.name = THERMAL_GENL_MCAST_GROUP_NAME,
+};
+
+int thermal_generate_netlink_event(struct thermal_zone_device *tz,
+					enum events event)
+{
+	struct sk_buff *skb;
+	struct nlattr *attr;
+	struct thermal_genl_event *thermal_event;
+	void *msg_header;
+	int size;
+	int result;
+	static unsigned int thermal_event_seqnum;
+
+	if (!tz)
+		return -EINVAL;
+
+	/* allocate memory */
+	size = nla_total_size(sizeof(struct thermal_genl_event)) +
+	       nla_total_size(0);
+
+	skb = genlmsg_new(size, GFP_ATOMIC);
+	if (!skb)
+		return -ENOMEM;
+
+	/* add the genetlink message header */
+	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
+				 &thermal_event_genl_family, 0,
+				 THERMAL_GENL_CMD_EVENT);
+	if (!msg_header) {
+		nlmsg_free(skb);
+		return -ENOMEM;
+	}
+
+	/* fill the data */
+	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
+			   sizeof(struct thermal_genl_event));
+
+	if (!attr) {
+		nlmsg_free(skb);
+		return -EINVAL;
+	}
+
+	thermal_event = nla_data(attr);
+	if (!thermal_event) {
+		nlmsg_free(skb);
+		return -EINVAL;
+	}
+
+	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
+
+	thermal_event->orig = tz->id;
+	thermal_event->event = event;
+
+	/* send multicast genetlink message */
+	result = genlmsg_end(skb, msg_header);
+	if (result < 0) {
+		nlmsg_free(skb);
+		return result;
+	}
+
+	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
+	if (result)
+		dev_err(&tz->device, "Failed to send netlink event:%d", result);
+
+	return result;
+}
+EXPORT_SYMBOL(thermal_generate_netlink_event);
+
+static int genetlink_init(void)
+{
+	int result;
+
+	result = genl_register_family(&thermal_event_genl_family);
+	if (result)
+		return result;
+
+	result = genl_register_mc_group(&thermal_event_genl_family,
+					&thermal_event_mcgrp);
+	if (result)
+		genl_unregister_family(&thermal_event_genl_family);
+	return result;
+}
+
+static void genetlink_exit(void)
+{
+	genl_unregister_family(&thermal_event_genl_family);
+}
+#else /* !CONFIG_NET */
+static inline int genetlink_init(void) { return 0; }
+static inline void genetlink_exit(void) {}
+#endif /* !CONFIG_NET */
+
+static int __init thermal_init(void)
+{
+	int result = 0;
+
+	result = class_register(&thermal_class);
+	if (result) {
+		idr_destroy(&thermal_tz_idr);
+		idr_destroy(&thermal_cdev_idr);
+		mutex_destroy(&thermal_idr_lock);
+		mutex_destroy(&thermal_list_lock);
+		return result;
+	}
+	result = genetlink_init();
+	return result;
+}
+
+static void __exit thermal_exit(void)
+{
+	class_unregister(&thermal_class);
+	idr_destroy(&thermal_tz_idr);
+	idr_destroy(&thermal_cdev_idr);
+	mutex_destroy(&thermal_idr_lock);
+	mutex_destroy(&thermal_list_lock);
+	genetlink_exit();
+}
+
+fs_initcall(thermal_init);
+module_exit(thermal_exit);
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
deleted file mode 100644
index 5b7863a..0000000
--- a/drivers/thermal/thermal_sys.c
+++ /dev/null
@@ -1,1888 +0,0 @@
-/*
- *  thermal.c - Generic Thermal Management Sysfs support.
- *
- *  Copyright (C) 2008 Intel Corp
- *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
- *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
- *
- *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; version 2 of the License.
- *
- *  This program is distributed in the hope that it will be useful, but
- *  WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/kdev_t.h>
-#include <linux/idr.h>
-#include <linux/thermal.h>
-#include <linux/reboot.h>
-#include <net/netlink.h>
-#include <net/genetlink.h>
-
-#include "thermal_core.h"
-
-MODULE_AUTHOR("Zhang Rui");
-MODULE_DESCRIPTION("Generic thermal management sysfs support");
-MODULE_LICENSE("GPL");
-
-static DEFINE_IDR(thermal_tz_idr);
-static DEFINE_IDR(thermal_cdev_idr);
-static DEFINE_MUTEX(thermal_idr_lock);
-
-static LIST_HEAD(thermal_tz_list);
-static LIST_HEAD(thermal_cdev_list);
-static LIST_HEAD(thermal_governor_list);
-
-static DEFINE_MUTEX(thermal_list_lock);
-static DEFINE_MUTEX(thermal_governor_lock);
-
-static struct thermal_governor *__find_governor(const char *name)
-{
-	struct thermal_governor *pos;
-
-	list_for_each_entry(pos, &thermal_governor_list, governor_list)
-		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
-			return pos;
-
-	return NULL;
-}
-
-int thermal_register_governor(struct thermal_governor *governor)
-{
-	int err;
-	const char *name;
-	struct thermal_zone_device *pos;
-
-	if (!governor)
-		return -EINVAL;
-
-	mutex_lock(&thermal_governor_lock);
-
-	err = -EBUSY;
-	if (__find_governor(governor->name) == NULL) {
-		err = 0;
-		list_add(&governor->governor_list, &thermal_governor_list);
-	}
-
-	mutex_lock(&thermal_list_lock);
-
-	list_for_each_entry(pos, &thermal_tz_list, node) {
-		if (pos->governor)
-			continue;
-		if (pos->tzp)
-			name = pos->tzp->governor_name;
-		else
-			name = DEFAULT_THERMAL_GOVERNOR;
-		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
-			pos->governor = governor;
-	}
-
-	mutex_unlock(&thermal_list_lock);
-	mutex_unlock(&thermal_governor_lock);
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(thermal_register_governor);
-
-void thermal_unregister_governor(struct thermal_governor *governor)
-{
-	struct thermal_zone_device *pos;
-
-	if (!governor)
-		return;
-
-	mutex_lock(&thermal_governor_lock);
-
-	if (__find_governor(governor->name) == NULL)
-		goto exit;
-
-	mutex_lock(&thermal_list_lock);
-
-	list_for_each_entry(pos, &thermal_tz_list, node) {
-		if (!strnicmp(pos->governor->name, governor->name,
-						THERMAL_NAME_LENGTH))
-			pos->governor = NULL;
-	}
-
-	mutex_unlock(&thermal_list_lock);
-	list_del(&governor->governor_list);
-exit:
-	mutex_unlock(&thermal_governor_lock);
-	return;
-}
-EXPORT_SYMBOL_GPL(thermal_unregister_governor);
-
-static int get_idr(struct idr *idr, struct mutex *lock, int *id)
-{
-	int ret;
-
-	if (lock)
-		mutex_lock(lock);
-	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
-	if (lock)
-		mutex_unlock(lock);
-	if (unlikely(ret < 0))
-		return ret;
-	*id = ret;
-	return 0;
-}
-
-static void release_idr(struct idr *idr, struct mutex *lock, int id)
-{
-	if (lock)
-		mutex_lock(lock);
-	idr_remove(idr, id);
-	if (lock)
-		mutex_unlock(lock);
-}
-
-int get_tz_trend(struct thermal_zone_device *tz, int trip)
-{
-	enum thermal_trend trend;
-
-	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
-		if (tz->temperature > tz->last_temperature)
-			trend = THERMAL_TREND_RAISING;
-		else if (tz->temperature < tz->last_temperature)
-			trend = THERMAL_TREND_DROPPING;
-		else
-			trend = THERMAL_TREND_STABLE;
-	}
-
-	return trend;
-}
-EXPORT_SYMBOL(get_tz_trend);
-
-struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
-			struct thermal_cooling_device *cdev, int trip)
-{
-	struct thermal_instance *pos = NULL;
-	struct thermal_instance *target_instance = NULL;
-
-	mutex_lock(&tz->lock);
-	mutex_lock(&cdev->lock);
-
-	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
-		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
-			target_instance = pos;
-			break;
-		}
-	}
-
-	mutex_unlock(&cdev->lock);
-	mutex_unlock(&tz->lock);
-
-	return target_instance;
-}
-EXPORT_SYMBOL(get_thermal_instance);
-
-static void print_bind_err_msg(struct thermal_zone_device *tz,
-			struct thermal_cooling_device *cdev, int ret)
-{
-	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
-				tz->type, cdev->type, ret);
-}
-
-static void __bind(struct thermal_zone_device *tz, int mask,
-			struct thermal_cooling_device *cdev)
-{
-	int i, ret;
-
-	for (i = 0; i < tz->trips; i++) {
-		if (mask & (1 << i)) {
-			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
-					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
-			if (ret)
-				print_bind_err_msg(tz, cdev, ret);
-		}
-	}
-}
-
-static void __unbind(struct thermal_zone_device *tz, int mask,
-			struct thermal_cooling_device *cdev)
-{
-	int i;
-
-	for (i = 0; i < tz->trips; i++)
-		if (mask & (1 << i))
-			thermal_zone_unbind_cooling_device(tz, i, cdev);
-}
-
-static void bind_cdev(struct thermal_cooling_device *cdev)
-{
-	int i, ret;
-	const struct thermal_zone_params *tzp;
-	struct thermal_zone_device *pos = NULL;
-
-	mutex_lock(&thermal_list_lock);
-
-	list_for_each_entry(pos, &thermal_tz_list, node) {
-		if (!pos->tzp && !pos->ops->bind)
-			continue;
-
-		if (!pos->tzp && pos->ops->bind) {
-			ret = pos->ops->bind(pos, cdev);
-			if (ret)
-				print_bind_err_msg(pos, cdev, ret);
-		}
-
-		tzp = pos->tzp;
-		if (!tzp || !tzp->tbp)
-			continue;
-
-		for (i = 0; i < tzp->num_tbps; i++) {
-			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
-				continue;
-			if (tzp->tbp[i].match(pos, cdev))
-				continue;
-			tzp->tbp[i].cdev = cdev;
-			__bind(pos, tzp->tbp[i].trip_mask, cdev);
-		}
-	}
-
-	mutex_unlock(&thermal_list_lock);
-}
-
-static void bind_tz(struct thermal_zone_device *tz)
-{
-	int i, ret;
-	struct thermal_cooling_device *pos = NULL;
-	const struct thermal_zone_params *tzp = tz->tzp;
-
-	if (!tzp && !tz->ops->bind)
-		return;
-
-	mutex_lock(&thermal_list_lock);
-
-	/* If there is no platform data, try to use ops->bind */
-	if (!tzp && tz->ops->bind) {
-		list_for_each_entry(pos, &thermal_cdev_list, node) {
-			ret = tz->ops->bind(tz, pos);
-			if (ret)
-				print_bind_err_msg(tz, pos, ret);
-		}
-		goto exit;
-	}
-
-	if (!tzp || !tzp->tbp)
-		goto exit;
-
-	list_for_each_entry(pos, &thermal_cdev_list, node) {
-		for (i = 0; i < tzp->num_tbps; i++) {
-			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
-				continue;
-			if (tzp->tbp[i].match(tz, pos))
-				continue;
-			tzp->tbp[i].cdev = pos;
-			__bind(tz, tzp->tbp[i].trip_mask, pos);
-		}
-	}
-exit:
-	mutex_unlock(&thermal_list_lock);
-}
-
-static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
-					    int delay)
-{
-	if (delay > 1000)
-		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
-				 round_jiffies(msecs_to_jiffies(delay)));
-	else if (delay)
-		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
-				 msecs_to_jiffies(delay));
-	else
-		cancel_delayed_work(&tz->poll_queue);
-}
-
-static void monitor_thermal_zone(struct thermal_zone_device *tz)
-{
-	mutex_lock(&tz->lock);
-
-	if (tz->passive)
-		thermal_zone_device_set_polling(tz, tz->passive_delay);
-	else if (tz->polling_delay)
-		thermal_zone_device_set_polling(tz, tz->polling_delay);
-	else
-		thermal_zone_device_set_polling(tz, 0);
-
-	mutex_unlock(&tz->lock);
-}
-
-static void handle_non_critical_trips(struct thermal_zone_device *tz,
-			int trip, enum thermal_trip_type trip_type)
-{
-	if (tz->governor)
-		tz->governor->throttle(tz, trip);
-}
-
-static void handle_critical_trips(struct thermal_zone_device *tz,
-				int trip, enum thermal_trip_type trip_type)
-{
-	long trip_temp;
-
-	tz->ops->get_trip_temp(tz, trip, &trip_temp);
-
-	/* If we have not crossed the trip_temp, we do not care. */
-	if (tz->temperature < trip_temp)
-		return;
-
-	if (tz->ops->notify)
-		tz->ops->notify(tz, trip, trip_type);
-
-	if (trip_type == THERMAL_TRIP_CRITICAL) {
-		dev_emerg(&tz->device,
-			  "critical temperature reached(%d C),shutting down\n",
-			  tz->temperature / 1000);
-		orderly_poweroff(true);
-	}
-}
-
-static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
-{
-	enum thermal_trip_type type;
-
-	tz->ops->get_trip_type(tz, trip, &type);
-
-	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
-		handle_critical_trips(tz, trip, type);
-	else
-		handle_non_critical_trips(tz, trip, type);
-	/*
-	 * Alright, we handled this trip successfully.
-	 * So, start monitoring again.
-	 */
-	monitor_thermal_zone(tz);
-}
-
-static int thermal_zone_get_temp(struct thermal_zone_device *tz,
-				unsigned long *temp)
-{
-	int ret = 0;
-#ifdef CONFIG_THERMAL_EMULATION
-	int count;
-	unsigned long crit_temp = -1UL;
-	enum thermal_trip_type type;
-#endif
-
-	mutex_lock(&tz->lock);
-
-	ret = tz->ops->get_temp(tz, temp);
-#ifdef CONFIG_THERMAL_EMULATION
-	if (!tz->emul_temperature)
-		goto skip_emul;
-
-	for (count = 0; count < tz->trips; count++) {
-		ret = tz->ops->get_trip_type(tz, count, &type);
-		if (!ret && type == THERMAL_TRIP_CRITICAL) {
-			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
-			break;
-		}
-	}
-
-	if (ret)
-		goto skip_emul;
-
-	if (*temp < crit_temp)
-		*temp = tz->emul_temperature;
-skip_emul:
-#endif
-	mutex_unlock(&tz->lock);
-	return ret;
-}
-
-static void update_temperature(struct thermal_zone_device *tz)
-{
-	long temp;
-	int ret;
-
-	ret = thermal_zone_get_temp(tz, &temp);
-	if (ret) {
-		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
-			 tz->id);
-		return;
-	}
-
-	mutex_lock(&tz->lock);
-	tz->last_temperature = tz->temperature;
-	tz->temperature = temp;
-	mutex_unlock(&tz->lock);
-}
-
-void thermal_zone_device_update(struct thermal_zone_device *tz)
-{
-	int count;
-
-	update_temperature(tz);
-
-	for (count = 0; count < tz->trips; count++)
-		handle_thermal_trip(tz, count);
-}
-EXPORT_SYMBOL(thermal_zone_device_update);
-
-static void thermal_zone_device_check(struct work_struct *work)
-{
-	struct thermal_zone_device *tz = container_of(work, struct
-						      thermal_zone_device,
-						      poll_queue.work);
-	thermal_zone_device_update(tz);
-}
-
-/* sys I/F for thermal zone */
-
-#define to_thermal_zone(_dev) \
-	container_of(_dev, struct thermal_zone_device, device)
-
-static ssize_t
-type_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-
-	return sprintf(buf, "%s\n", tz->type);
-}
-
-static ssize_t
-temp_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	long temperature;
-	int ret;
-
-	ret = thermal_zone_get_temp(tz, &temperature);
-
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%ld\n", temperature);
-}
-
-static ssize_t
-mode_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	enum thermal_device_mode mode;
-	int result;
-
-	if (!tz->ops->get_mode)
-		return -EPERM;
-
-	result = tz->ops->get_mode(tz, &mode);
-	if (result)
-		return result;
-
-	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
-		       : "disabled");
-}
-
-static ssize_t
-mode_store(struct device *dev, struct device_attribute *attr,
-	   const char *buf, size_t count)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	int result;
-
-	if (!tz->ops->set_mode)
-		return -EPERM;
-
-	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
-		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
-	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
-		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
-	else
-		result = -EINVAL;
-
-	if (result)
-		return result;
-
-	return count;
-}
-
-static ssize_t
-trip_point_type_show(struct device *dev, struct device_attribute *attr,
-		     char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	enum thermal_trip_type type;
-	int trip, result;
-
-	if (!tz->ops->get_trip_type)
-		return -EPERM;
-
-	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
-		return -EINVAL;
-
-	result = tz->ops->get_trip_type(tz, trip, &type);
-	if (result)
-		return result;
-
-	switch (type) {
-	case THERMAL_TRIP_CRITICAL:
-		return sprintf(buf, "critical\n");
-	case THERMAL_TRIP_HOT:
-		return sprintf(buf, "hot\n");
-	case THERMAL_TRIP_PASSIVE:
-		return sprintf(buf, "passive\n");
-	case THERMAL_TRIP_ACTIVE:
-		return sprintf(buf, "active\n");
-	default:
-		return sprintf(buf, "unknown\n");
-	}
-}
-
-static ssize_t
-trip_point_temp_store(struct device *dev, struct device_attribute *attr,
-		     const char *buf, size_t count)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	int trip, ret;
-	unsigned long temperature;
-
-	if (!tz->ops->set_trip_temp)
-		return -EPERM;
-
-	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
-		return -EINVAL;
-
-	if (kstrtoul(buf, 10, &temperature))
-		return -EINVAL;
-
-	ret = tz->ops->set_trip_temp(tz, trip, temperature);
-
-	return ret ? ret : count;
-}
-
-static ssize_t
-trip_point_temp_show(struct device *dev, struct device_attribute *attr,
-		     char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	int trip, ret;
-	long temperature;
-
-	if (!tz->ops->get_trip_temp)
-		return -EPERM;
-
-	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
-		return -EINVAL;
-
-	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
-
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%ld\n", temperature);
-}
-
-static ssize_t
-trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
-			const char *buf, size_t count)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	int trip, ret;
-	unsigned long temperature;
-
-	if (!tz->ops->set_trip_hyst)
-		return -EPERM;
-
-	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
-		return -EINVAL;
-
-	if (kstrtoul(buf, 10, &temperature))
-		return -EINVAL;
-
-	/*
-	 * We are not doing any check on the 'temperature' value
-	 * here. The driver implementing 'set_trip_hyst' has to
-	 * take care of this.
-	 */
-	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
-
-	return ret ? ret : count;
-}
-
-static ssize_t
-trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
-			char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	int trip, ret;
-	unsigned long temperature;
-
-	if (!tz->ops->get_trip_hyst)
-		return -EPERM;
-
-	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
-		return -EINVAL;
-
-	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
-
-	return ret ? ret : sprintf(buf, "%ld\n", temperature);
-}
-
-static ssize_t
-passive_store(struct device *dev, struct device_attribute *attr,
-		    const char *buf, size_t count)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	struct thermal_cooling_device *cdev = NULL;
-	int state;
-
-	if (!sscanf(buf, "%d\n", &state))
-		return -EINVAL;
-
-	/* sanity check: values below 1000 millicelcius don't make sense
-	 * and can cause the system to go into a thermal heart attack
-	 */
-	if (state && state < 1000)
-		return -EINVAL;
-
-	if (state && !tz->forced_passive) {
-		mutex_lock(&thermal_list_lock);
-		list_for_each_entry(cdev, &thermal_cdev_list, node) {
-			if (!strncmp("Processor", cdev->type,
-				     sizeof("Processor")))
-				thermal_zone_bind_cooling_device(tz,
-						THERMAL_TRIPS_NONE, cdev,
-						THERMAL_NO_LIMIT,
-						THERMAL_NO_LIMIT);
-		}
-		mutex_unlock(&thermal_list_lock);
-		if (!tz->passive_delay)
-			tz->passive_delay = 1000;
-	} else if (!state && tz->forced_passive) {
-		mutex_lock(&thermal_list_lock);
-		list_for_each_entry(cdev, &thermal_cdev_list, node) {
-			if (!strncmp("Processor", cdev->type,
-				     sizeof("Processor")))
-				thermal_zone_unbind_cooling_device(tz,
-								   THERMAL_TRIPS_NONE,
-								   cdev);
-		}
-		mutex_unlock(&thermal_list_lock);
-		tz->passive_delay = 0;
-	}
-
-	tz->forced_passive = state;
-
-	thermal_zone_device_update(tz);
-
-	return count;
-}
-
-static ssize_t
-passive_show(struct device *dev, struct device_attribute *attr,
-		   char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-
-	return sprintf(buf, "%d\n", tz->forced_passive);
-}
-
-static ssize_t
-policy_store(struct device *dev, struct device_attribute *attr,
-		    const char *buf, size_t count)
-{
-	int ret = -EINVAL;
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	struct thermal_governor *gov;
-
-	mutex_lock(&thermal_governor_lock);
-
-	gov = __find_governor(buf);
-	if (!gov)
-		goto exit;
-
-	tz->governor = gov;
-	ret = count;
-
-exit:
-	mutex_unlock(&thermal_governor_lock);
-	return ret;
-}
-
-static ssize_t
-policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-
-	return sprintf(buf, "%s\n", tz->governor->name);
-}
-
-#ifdef CONFIG_THERMAL_EMULATION
-static ssize_t
-emul_temp_store(struct device *dev, struct device_attribute *attr,
-		     const char *buf, size_t count)
-{
-	struct thermal_zone_device *tz = to_thermal_zone(dev);
-	int ret = 0;
-	unsigned long temperature;
-
-	if (kstrtoul(buf, 10, &temperature))
-		return -EINVAL;
-
-	if (!tz->ops->set_emul_temp) {
-		mutex_lock(&tz->lock);
-		tz->emul_temperature = temperature;
-		mutex_unlock(&tz->lock);
-	} else {
-		ret = tz->ops->set_emul_temp(tz, temperature);
-	}
-
-	return ret ? ret : count;
-}
-static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
-#endif/*CONFIG_THERMAL_EMULATION*/
-
-static DEVICE_ATTR(type, 0444, type_show, NULL);
-static DEVICE_ATTR(temp, 0444, temp_show, NULL);
-static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
-static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
-static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
-
-/* sys I/F for cooling device */
-#define to_cooling_device(_dev)	\
-	container_of(_dev, struct thermal_cooling_device, device)
-
-static ssize_t
-thermal_cooling_device_type_show(struct device *dev,
-				 struct device_attribute *attr, char *buf)
-{
-	struct thermal_cooling_device *cdev = to_cooling_device(dev);
-
-	return sprintf(buf, "%s\n", cdev->type);
-}
-
-static ssize_t
-thermal_cooling_device_max_state_show(struct device *dev,
-				      struct device_attribute *attr, char *buf)
-{
-	struct thermal_cooling_device *cdev = to_cooling_device(dev);
-	unsigned long state;
-	int ret;
-
-	ret = cdev->ops->get_max_state(cdev, &state);
-	if (ret)
-		return ret;
-	return sprintf(buf, "%ld\n", state);
-}
-
-static ssize_t
-thermal_cooling_device_cur_state_show(struct device *dev,
-				      struct device_attribute *attr, char *buf)
-{
-	struct thermal_cooling_device *cdev = to_cooling_device(dev);
-	unsigned long state;
-	int ret;
-
-	ret = cdev->ops->get_cur_state(cdev, &state);
-	if (ret)
-		return ret;
-	return sprintf(buf, "%ld\n", state);
-}
-
-static ssize_t
-thermal_cooling_device_cur_state_store(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf, size_t count)
-{
-	struct thermal_cooling_device *cdev = to_cooling_device(dev);
-	unsigned long state;
-	int result;
-
-	if (!sscanf(buf, "%ld\n", &state))
-		return -EINVAL;
-
-	if ((long)state < 0)
-		return -EINVAL;
-
-	result = cdev->ops->set_cur_state(cdev, state);
-	if (result)
-		return result;
-	return count;
-}
-
-static struct device_attribute dev_attr_cdev_type =
-__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
-static DEVICE_ATTR(max_state, 0444,
-		   thermal_cooling_device_max_state_show, NULL);
-static DEVICE_ATTR(cur_state, 0644,
-		   thermal_cooling_device_cur_state_show,
-		   thermal_cooling_device_cur_state_store);
-
-static ssize_t
-thermal_cooling_device_trip_point_show(struct device *dev,
-				       struct device_attribute *attr, char *buf)
-{
-	struct thermal_instance *instance;
-
-	instance =
-	    container_of(attr, struct thermal_instance, attr);
-
-	if (instance->trip == THERMAL_TRIPS_NONE)
-		return sprintf(buf, "-1\n");
-	else
-		return sprintf(buf, "%d\n", instance->trip);
-}
-
-/* Device management */
-
-#if defined(CONFIG_THERMAL_HWMON)
-
-/* hwmon sys I/F */
-#include <linux/hwmon.h>
-
-/* thermal zone devices with the same type share one hwmon device */
-struct thermal_hwmon_device {
-	char type[THERMAL_NAME_LENGTH];
-	struct device *device;
-	int count;
-	struct list_head tz_list;
-	struct list_head node;
-};
-
-struct thermal_hwmon_attr {
-	struct device_attribute attr;
-	char name[16];
-};
-
-/* one temperature input for each thermal zone */
-struct thermal_hwmon_temp {
-	struct list_head hwmon_node;
-	struct thermal_zone_device *tz;
-	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
-	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
-};
-
-static LIST_HEAD(thermal_hwmon_list);
-
-static ssize_t
-name_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
-	return sprintf(buf, "%s\n", hwmon->type);
-}
-static DEVICE_ATTR(name, 0444, name_show, NULL);
-
-static ssize_t
-temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	long temperature;
-	int ret;
-	struct thermal_hwmon_attr *hwmon_attr
-			= container_of(attr, struct thermal_hwmon_attr, attr);
-	struct thermal_hwmon_temp *temp
-			= container_of(hwmon_attr, struct thermal_hwmon_temp,
-				       temp_input);
-	struct thermal_zone_device *tz = temp->tz;
-
-	ret = thermal_zone_get_temp(tz, &temperature);
-
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%ld\n", temperature);
-}
-
-static ssize_t
-temp_crit_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
-{
-	struct thermal_hwmon_attr *hwmon_attr
-			= container_of(attr, struct thermal_hwmon_attr, attr);
-	struct thermal_hwmon_temp *temp
-			= container_of(hwmon_attr, struct thermal_hwmon_temp,
-				       temp_crit);
-	struct thermal_zone_device *tz = temp->tz;
-	long temperature;
-	int ret;
-
-	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%ld\n", temperature);
-}
-
-
-static struct thermal_hwmon_device *
-thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_device *hwmon;
-
-	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
-		if (!strcmp(hwmon->type, tz->type)) {
-			mutex_unlock(&thermal_list_lock);
-			return hwmon;
-		}
-	mutex_unlock(&thermal_list_lock);
-
-	return NULL;
-}
-
-/* Find the temperature input matching a given thermal zone */
-static struct thermal_hwmon_temp *
-thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
-			  const struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_temp *temp;
-
-	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
-		if (temp->tz == tz) {
-			mutex_unlock(&thermal_list_lock);
-			return temp;
-		}
-	mutex_unlock(&thermal_list_lock);
-
-	return NULL;
-}
-
-static int
-thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_device *hwmon;
-	struct thermal_hwmon_temp *temp;
-	int new_hwmon_device = 1;
-	int result;
-
-	hwmon = thermal_hwmon_lookup_by_type(tz);
-	if (hwmon) {
-		new_hwmon_device = 0;
-		goto register_sys_interface;
-	}
-
-	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
-	if (!hwmon)
-		return -ENOMEM;
-
-	INIT_LIST_HEAD(&hwmon->tz_list);
-	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
-	hwmon->device = hwmon_device_register(NULL);
-	if (IS_ERR(hwmon->device)) {
-		result = PTR_ERR(hwmon->device);
-		goto free_mem;
-	}
-	dev_set_drvdata(hwmon->device, hwmon);
-	result = device_create_file(hwmon->device, &dev_attr_name);
-	if (result)
-		goto free_mem;
-
- register_sys_interface:
-	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
-	if (!temp) {
-		result = -ENOMEM;
-		goto unregister_name;
-	}
-
-	temp->tz = tz;
-	hwmon->count++;
-
-	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
-		 "temp%d_input", hwmon->count);
-	temp->temp_input.attr.attr.name = temp->temp_input.name;
-	temp->temp_input.attr.attr.mode = 0444;
-	temp->temp_input.attr.show = temp_input_show;
-	sysfs_attr_init(&temp->temp_input.attr.attr);
-	result = device_create_file(hwmon->device, &temp->temp_input.attr);
-	if (result)
-		goto free_temp_mem;
-
-	if (tz->ops->get_crit_temp) {
-		unsigned long temperature;
-		if (!tz->ops->get_crit_temp(tz, &temperature)) {
-			snprintf(temp->temp_crit.name,
-				 sizeof(temp->temp_crit.name),
-				"temp%d_crit", hwmon->count);
-			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
-			temp->temp_crit.attr.attr.mode = 0444;
-			temp->temp_crit.attr.show = temp_crit_show;
-			sysfs_attr_init(&temp->temp_crit.attr.attr);
-			result = device_create_file(hwmon->device,
-						    &temp->temp_crit.attr);
-			if (result)
-				goto unregister_input;
-		}
-	}
-
-	mutex_lock(&thermal_list_lock);
-	if (new_hwmon_device)
-		list_add_tail(&hwmon->node, &thermal_hwmon_list);
-	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
-	mutex_unlock(&thermal_list_lock);
-
-	return 0;
-
- unregister_input:
-	device_remove_file(hwmon->device, &temp->temp_input.attr);
- free_temp_mem:
-	kfree(temp);
- unregister_name:
-	if (new_hwmon_device) {
-		device_remove_file(hwmon->device, &dev_attr_name);
-		hwmon_device_unregister(hwmon->device);
-	}
- free_mem:
-	if (new_hwmon_device)
-		kfree(hwmon);
-
-	return result;
-}
-
-static void
-thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_device *hwmon;
-	struct thermal_hwmon_temp *temp;
-
-	hwmon = thermal_hwmon_lookup_by_type(tz);
-	if (unlikely(!hwmon)) {
-		/* Should never happen... */
-		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
-		return;
-	}
-
-	temp = thermal_hwmon_lookup_temp(hwmon, tz);
-	if (unlikely(!temp)) {
-		/* Should never happen... */
-		dev_dbg(&tz->device, "temperature input lookup failed!\n");
-		return;
-	}
-
-	device_remove_file(hwmon->device, &temp->temp_input.attr);
-	if (tz->ops->get_crit_temp)
-		device_remove_file(hwmon->device, &temp->temp_crit.attr);
-
-	mutex_lock(&thermal_list_lock);
-	list_del(&temp->hwmon_node);
-	kfree(temp);
-	if (!list_empty(&hwmon->tz_list)) {
-		mutex_unlock(&thermal_list_lock);
-		return;
-	}
-	list_del(&hwmon->node);
-	mutex_unlock(&thermal_list_lock);
-
-	device_remove_file(hwmon->device, &dev_attr_name);
-	hwmon_device_unregister(hwmon->device);
-	kfree(hwmon);
-}
-#else
-static int
-thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-	return 0;
-}
-
-static void
-thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-}
-#endif
-
-/**
- * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
- * @tz:		thermal zone device
- * @trip:	indicates which trip point the cooling devices is
- *		associated with in this thermal zone.
- * @cdev:	thermal cooling device
- *
- * This function is usually called in the thermal zone device .bind callback.
- */
-int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
-				     int trip,
-				     struct thermal_cooling_device *cdev,
-				     unsigned long upper, unsigned long lower)
-{
-	struct thermal_instance *dev;
-	struct thermal_instance *pos;
-	struct thermal_zone_device *pos1;
-	struct thermal_cooling_device *pos2;
-	unsigned long max_state;
-	int result;
-
-	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
-		return -EINVAL;
-
-	list_for_each_entry(pos1, &thermal_tz_list, node) {
-		if (pos1 == tz)
-			break;
-	}
-	list_for_each_entry(pos2, &thermal_cdev_list, node) {
-		if (pos2 == cdev)
-			break;
-	}
-
-	if (tz != pos1 || cdev != pos2)
-		return -EINVAL;
-
-	cdev->ops->get_max_state(cdev, &max_state);
-
-	/* lower default 0, upper default max_state */
-	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
-	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
-
-	if (lower > upper || upper > max_state)
-		return -EINVAL;
-
-	dev =
-	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
-	if (!dev)
-		return -ENOMEM;
-	dev->tz = tz;
-	dev->cdev = cdev;
-	dev->trip = trip;
-	dev->upper = upper;
-	dev->lower = lower;
-	dev->target = THERMAL_NO_TARGET;
-
-	result = get_idr(&tz->idr, &tz->lock, &dev->id);
-	if (result)
-		goto free_mem;
-
-	sprintf(dev->name, "cdev%d", dev->id);
-	result =
-	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
-	if (result)
-		goto release_idr;
-
-	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
-	sysfs_attr_init(&dev->attr.attr);
-	dev->attr.attr.name = dev->attr_name;
-	dev->attr.attr.mode = 0444;
-	dev->attr.show = thermal_cooling_device_trip_point_show;
-	result = device_create_file(&tz->device, &dev->attr);
-	if (result)
-		goto remove_symbol_link;
-
-	mutex_lock(&tz->lock);
-	mutex_lock(&cdev->lock);
-	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
-	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
-		result = -EEXIST;
-		break;
-	}
-	if (!result) {
-		list_add_tail(&dev->tz_node, &tz->thermal_instances);
-		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
-	}
-	mutex_unlock(&cdev->lock);
-	mutex_unlock(&tz->lock);
-
-	if (!result)
-		return 0;
-
-	device_remove_file(&tz->device, &dev->attr);
-remove_symbol_link:
-	sysfs_remove_link(&tz->device.kobj, dev->name);
-release_idr:
-	release_idr(&tz->idr, &tz->lock, dev->id);
-free_mem:
-	kfree(dev);
-	return result;
-}
-EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
-
-/**
- * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
- * @tz:		thermal zone device
- * @trip:	indicates which trip point the cooling devices is
- *		associated with in this thermal zone.
- * @cdev:	thermal cooling device
- *
- * This function is usually called in the thermal zone device .unbind callback.
- */
-int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
-				       int trip,
-				       struct thermal_cooling_device *cdev)
-{
-	struct thermal_instance *pos, *next;
-
-	mutex_lock(&tz->lock);
-	mutex_lock(&cdev->lock);
-	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
-		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
-			list_del(&pos->tz_node);
-			list_del(&pos->cdev_node);
-			mutex_unlock(&cdev->lock);
-			mutex_unlock(&tz->lock);
-			goto unbind;
-		}
-	}
-	mutex_unlock(&cdev->lock);
-	mutex_unlock(&tz->lock);
-
-	return -ENODEV;
-
-unbind:
-	device_remove_file(&tz->device, &pos->attr);
-	sysfs_remove_link(&tz->device.kobj, pos->name);
-	release_idr(&tz->idr, &tz->lock, pos->id);
-	kfree(pos);
-	return 0;
-}
-EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
-
-static void thermal_release(struct device *dev)
-{
-	struct thermal_zone_device *tz;
-	struct thermal_cooling_device *cdev;
-
-	if (!strncmp(dev_name(dev), "thermal_zone",
-		     sizeof("thermal_zone") - 1)) {
-		tz = to_thermal_zone(dev);
-		kfree(tz);
-	} else {
-		cdev = to_cooling_device(dev);
-		kfree(cdev);
-	}
-}
-
-static struct class thermal_class = {
-	.name = "thermal",
-	.dev_release = thermal_release,
-};
-
-/**
- * thermal_cooling_device_register - register a new thermal cooling device
- * @type:	the thermal cooling device type.
- * @devdata:	device private data.
- * @ops:		standard thermal cooling devices callbacks.
- */
-struct thermal_cooling_device *
-thermal_cooling_device_register(char *type, void *devdata,
-				const struct thermal_cooling_device_ops *ops)
-{
-	struct thermal_cooling_device *cdev;
-	int result;
-
-	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
-		return ERR_PTR(-EINVAL);
-
-	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
-	    !ops->set_cur_state)
-		return ERR_PTR(-EINVAL);
-
-	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
-	if (!cdev)
-		return ERR_PTR(-ENOMEM);
-
-	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
-	if (result) {
-		kfree(cdev);
-		return ERR_PTR(result);
-	}
-
-	strcpy(cdev->type, type ? : "");
-	mutex_init(&cdev->lock);
-	INIT_LIST_HEAD(&cdev->thermal_instances);
-	cdev->ops = ops;
-	cdev->updated = true;
-	cdev->device.class = &thermal_class;
-	cdev->devdata = devdata;
-	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
-	result = device_register(&cdev->device);
-	if (result) {
-		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
-		kfree(cdev);
-		return ERR_PTR(result);
-	}
-
-	/* sys I/F */
-	if (type) {
-		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
-		if (result)
-			goto unregister;
-	}
-
-	result = device_create_file(&cdev->device, &dev_attr_max_state);
-	if (result)
-		goto unregister;
-
-	result = device_create_file(&cdev->device, &dev_attr_cur_state);
-	if (result)
-		goto unregister;
-
-	/* Add 'this' new cdev to the global cdev list */
-	mutex_lock(&thermal_list_lock);
-	list_add(&cdev->node, &thermal_cdev_list);
-	mutex_unlock(&thermal_list_lock);
-
-	/* Update binding information for 'this' new cdev */
-	bind_cdev(cdev);
-
-	return cdev;
-
-unregister:
-	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
-	device_unregister(&cdev->device);
-	return ERR_PTR(result);
-}
-EXPORT_SYMBOL(thermal_cooling_device_register);
-
-/**
- * thermal_cooling_device_unregister - removes the registered thermal cooling device
- * @cdev:	the thermal cooling device to remove.
- *
- * thermal_cooling_device_unregister() must be called when the device is no
- * longer needed.
- */
-void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
-{
-	int i;
-	const struct thermal_zone_params *tzp;
-	struct thermal_zone_device *tz;
-	struct thermal_cooling_device *pos = NULL;
-
-	if (!cdev)
-		return;
-
-	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(pos, &thermal_cdev_list, node)
-	    if (pos == cdev)
-		break;
-	if (pos != cdev) {
-		/* thermal cooling device not found */
-		mutex_unlock(&thermal_list_lock);
-		return;
-	}
-	list_del(&cdev->node);
-
-	/* Unbind all thermal zones associated with 'this' cdev */
-	list_for_each_entry(tz, &thermal_tz_list, node) {
-		if (tz->ops->unbind) {
-			tz->ops->unbind(tz, cdev);
-			continue;
-		}
-
-		if (!tz->tzp || !tz->tzp->tbp)
-			continue;
-
-		tzp = tz->tzp;
-		for (i = 0; i < tzp->num_tbps; i++) {
-			if (tzp->tbp[i].cdev == cdev) {
-				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
-				tzp->tbp[i].cdev = NULL;
-			}
-		}
-	}
-
-	mutex_unlock(&thermal_list_lock);
-
-	if (cdev->type[0])
-		device_remove_file(&cdev->device, &dev_attr_cdev_type);
-	device_remove_file(&cdev->device, &dev_attr_max_state);
-	device_remove_file(&cdev->device, &dev_attr_cur_state);
-
-	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
-	device_unregister(&cdev->device);
-	return;
-}
-EXPORT_SYMBOL(thermal_cooling_device_unregister);
-
-void thermal_cdev_update(struct thermal_cooling_device *cdev)
-{
-	struct thermal_instance *instance;
-	unsigned long target = 0;
-
-	/* cooling device is updated*/
-	if (cdev->updated)
-		return;
-
-	mutex_lock(&cdev->lock);
-	/* Make sure cdev enters the deepest cooling state */
-	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
-		if (instance->target == THERMAL_NO_TARGET)
-			continue;
-		if (instance->target > target)
-			target = instance->target;
-	}
-	mutex_unlock(&cdev->lock);
-	cdev->ops->set_cur_state(cdev, target);
-	cdev->updated = true;
-}
-EXPORT_SYMBOL(thermal_cdev_update);
-
-/**
- * notify_thermal_framework - Sensor drivers use this API to notify framework
- * @tz:		thermal zone device
- * @trip:	indicates which trip point has been crossed
- *
- * This function handles the trip events from sensor drivers. It starts
- * throttling the cooling devices according to the policy configured.
- * For CRITICAL and HOT trip points, this notifies the respective drivers,
- * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
- * The throttling policy is based on the configured platform data; if no
- * platform data is provided, this uses the step_wise throttling policy.
- */
-void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
-{
-	handle_thermal_trip(tz, trip);
-}
-EXPORT_SYMBOL(notify_thermal_framework);
-
-/**
- * create_trip_attrs - create attributes for trip points
- * @tz:		the thermal zone device
- * @mask:	Writeable trip point bitmap.
- */
-static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
-{
-	int indx;
-	int size = sizeof(struct thermal_attr) * tz->trips;
-
-	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
-	if (!tz->trip_type_attrs)
-		return -ENOMEM;
-
-	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
-	if (!tz->trip_temp_attrs) {
-		kfree(tz->trip_type_attrs);
-		return -ENOMEM;
-	}
-
-	if (tz->ops->get_trip_hyst) {
-		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
-		if (!tz->trip_hyst_attrs) {
-			kfree(tz->trip_type_attrs);
-			kfree(tz->trip_temp_attrs);
-			return -ENOMEM;
-		}
-	}
-
-
-	for (indx = 0; indx < tz->trips; indx++) {
-		/* create trip type attribute */
-		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
-			 "trip_point_%d_type", indx);
-
-		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
-		tz->trip_type_attrs[indx].attr.attr.name =
-						tz->trip_type_attrs[indx].name;
-		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
-		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
-
-		device_create_file(&tz->device,
-				   &tz->trip_type_attrs[indx].attr);
-
-		/* create trip temp attribute */
-		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
-			 "trip_point_%d_temp", indx);
-
-		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
-		tz->trip_temp_attrs[indx].attr.attr.name =
-						tz->trip_temp_attrs[indx].name;
-		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
-		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
-		if (mask & (1 << indx)) {
-			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
-			tz->trip_temp_attrs[indx].attr.store =
-							trip_point_temp_store;
-		}
-
-		device_create_file(&tz->device,
-				   &tz->trip_temp_attrs[indx].attr);
-
-		/* create Optional trip hyst attribute */
-		if (!tz->ops->get_trip_hyst)
-			continue;
-		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
-			 "trip_point_%d_hyst", indx);
-
-		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
-		tz->trip_hyst_attrs[indx].attr.attr.name =
-					tz->trip_hyst_attrs[indx].name;
-		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
-		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
-		if (tz->ops->set_trip_hyst) {
-			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
-			tz->trip_hyst_attrs[indx].attr.store =
-					trip_point_hyst_store;
-		}
-
-		device_create_file(&tz->device,
-				   &tz->trip_hyst_attrs[indx].attr);
-	}
-	return 0;
-}
-
-static void remove_trip_attrs(struct thermal_zone_device *tz)
-{
-	int indx;
-
-	for (indx = 0; indx < tz->trips; indx++) {
-		device_remove_file(&tz->device,
-				   &tz->trip_type_attrs[indx].attr);
-		device_remove_file(&tz->device,
-				   &tz->trip_temp_attrs[indx].attr);
-		if (tz->ops->get_trip_hyst)
-			device_remove_file(&tz->device,
-				  &tz->trip_hyst_attrs[indx].attr);
-	}
-	kfree(tz->trip_type_attrs);
-	kfree(tz->trip_temp_attrs);
-	kfree(tz->trip_hyst_attrs);
-}
-
-/**
- * thermal_zone_device_register - register a new thermal zone device
- * @type:	the thermal zone device type
- * @trips:	the number of trip points the thermal zone support
- * @mask:	a bit string indicating the writeablility of trip points
- * @devdata:	private device data
- * @ops:	standard thermal zone device callbacks
- * @tzp:	thermal zone platform parameters
- * @passive_delay: number of milliseconds to wait between polls when
- *		   performing passive cooling
- * @polling_delay: number of milliseconds to wait between polls when checking
- *		   whether trip points have been crossed (0 for interrupt
- *		   driven systems)
- *
- * thermal_zone_device_unregister() must be called when the device is no
- * longer needed. The passive cooling depends on the .get_trend() return value.
- */
-struct thermal_zone_device *thermal_zone_device_register(const char *type,
-	int trips, int mask, void *devdata,
-	const struct thermal_zone_device_ops *ops,
-	const struct thermal_zone_params *tzp,
-	int passive_delay, int polling_delay)
-{
-	struct thermal_zone_device *tz;
-	enum thermal_trip_type trip_type;
-	int result;
-	int count;
-	int passive = 0;
-
-	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
-		return ERR_PTR(-EINVAL);
-
-	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
-		return ERR_PTR(-EINVAL);
-
-	if (!ops || !ops->get_temp)
-		return ERR_PTR(-EINVAL);
-
-	if (trips > 0 && !ops->get_trip_type)
-		return ERR_PTR(-EINVAL);
-
-	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
-	if (!tz)
-		return ERR_PTR(-ENOMEM);
-
-	INIT_LIST_HEAD(&tz->thermal_instances);
-	idr_init(&tz->idr);
-	mutex_init(&tz->lock);
-	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
-	if (result) {
-		kfree(tz);
-		return ERR_PTR(result);
-	}
-
-	strcpy(tz->type, type ? : "");
-	tz->ops = ops;
-	tz->tzp = tzp;
-	tz->device.class = &thermal_class;
-	tz->devdata = devdata;
-	tz->trips = trips;
-	tz->passive_delay = passive_delay;
-	tz->polling_delay = polling_delay;
-
-	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
-	result = device_register(&tz->device);
-	if (result) {
-		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
-		kfree(tz);
-		return ERR_PTR(result);
-	}
-
-	/* sys I/F */
-	if (type) {
-		result = device_create_file(&tz->device, &dev_attr_type);
-		if (result)
-			goto unregister;
-	}
-
-	result = device_create_file(&tz->device, &dev_attr_temp);
-	if (result)
-		goto unregister;
-
-	if (ops->get_mode) {
-		result = device_create_file(&tz->device, &dev_attr_mode);
-		if (result)
-			goto unregister;
-	}
-
-	result = create_trip_attrs(tz, mask);
-	if (result)
-		goto unregister;
-
-	for (count = 0; count < trips; count++) {
-		tz->ops->get_trip_type(tz, count, &trip_type);
-		if (trip_type == THERMAL_TRIP_PASSIVE)
-			passive = 1;
-	}
-
-	if (!passive) {
-		result = device_create_file(&tz->device, &dev_attr_passive);
-		if (result)
-			goto unregister;
-	}
-
-#ifdef CONFIG_THERMAL_EMULATION
-	result = device_create_file(&tz->device, &dev_attr_emul_temp);
-	if (result)
-		goto unregister;
-#endif
-	/* Create policy attribute */
-	result = device_create_file(&tz->device, &dev_attr_policy);
-	if (result)
-		goto unregister;
-
-	/* Update 'this' zone's governor information */
-	mutex_lock(&thermal_governor_lock);
-
-	if (tz->tzp)
-		tz->governor = __find_governor(tz->tzp->governor_name);
-	else
-		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
-
-	mutex_unlock(&thermal_governor_lock);
-
-	result = thermal_add_hwmon_sysfs(tz);
-	if (result)
-		goto unregister;
-
-	mutex_lock(&thermal_list_lock);
-	list_add_tail(&tz->node, &thermal_tz_list);
-	mutex_unlock(&thermal_list_lock);
-
-	/* Bind cooling devices for this zone */
-	bind_tz(tz);
-
-	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
-
-	thermal_zone_device_update(tz);
-
-	if (!result)
-		return tz;
-
-unregister:
-	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
-	device_unregister(&tz->device);
-	return ERR_PTR(result);
-}
-EXPORT_SYMBOL(thermal_zone_device_register);
-
-/**
- * thermal_device_unregister - removes the registered thermal zone device
- * @tz: the thermal zone device to remove
- */
-void thermal_zone_device_unregister(struct thermal_zone_device *tz)
-{
-	int i;
-	const struct thermal_zone_params *tzp;
-	struct thermal_cooling_device *cdev;
-	struct thermal_zone_device *pos = NULL;
-
-	if (!tz)
-		return;
-
-	tzp = tz->tzp;
-
-	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(pos, &thermal_tz_list, node)
-	    if (pos == tz)
-		break;
-	if (pos != tz) {
-		/* thermal zone device not found */
-		mutex_unlock(&thermal_list_lock);
-		return;
-	}
-	list_del(&tz->node);
-
-	/* Unbind all cdevs associated with 'this' thermal zone */
-	list_for_each_entry(cdev, &thermal_cdev_list, node) {
-		if (tz->ops->unbind) {
-			tz->ops->unbind(tz, cdev);
-			continue;
-		}
-
-		if (!tzp || !tzp->tbp)
-			break;
-
-		for (i = 0; i < tzp->num_tbps; i++) {
-			if (tzp->tbp[i].cdev == cdev) {
-				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
-				tzp->tbp[i].cdev = NULL;
-			}
-		}
-	}
-
-	mutex_unlock(&thermal_list_lock);
-
-	thermal_zone_device_set_polling(tz, 0);
-
-	if (tz->type[0])
-		device_remove_file(&tz->device, &dev_attr_type);
-	device_remove_file(&tz->device, &dev_attr_temp);
-	if (tz->ops->get_mode)
-		device_remove_file(&tz->device, &dev_attr_mode);
-	device_remove_file(&tz->device, &dev_attr_policy);
-	remove_trip_attrs(tz);
-	tz->governor = NULL;
-
-	thermal_remove_hwmon_sysfs(tz);
-	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
-	idr_destroy(&tz->idr);
-	mutex_destroy(&tz->lock);
-	device_unregister(&tz->device);
-	return;
-}
-EXPORT_SYMBOL(thermal_zone_device_unregister);
-
-#ifdef CONFIG_NET
-static struct genl_family thermal_event_genl_family = {
-	.id = GENL_ID_GENERATE,
-	.name = THERMAL_GENL_FAMILY_NAME,
-	.version = THERMAL_GENL_VERSION,
-	.maxattr = THERMAL_GENL_ATTR_MAX,
-};
-
-static struct genl_multicast_group thermal_event_mcgrp = {
-	.name = THERMAL_GENL_MCAST_GROUP_NAME,
-};
-
-int thermal_generate_netlink_event(struct thermal_zone_device *tz,
-					enum events event)
-{
-	struct sk_buff *skb;
-	struct nlattr *attr;
-	struct thermal_genl_event *thermal_event;
-	void *msg_header;
-	int size;
-	int result;
-	static unsigned int thermal_event_seqnum;
-
-	if (!tz)
-		return -EINVAL;
-
-	/* allocate memory */
-	size = nla_total_size(sizeof(struct thermal_genl_event)) +
-	       nla_total_size(0);
-
-	skb = genlmsg_new(size, GFP_ATOMIC);
-	if (!skb)
-		return -ENOMEM;
-
-	/* add the genetlink message header */
-	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
-				 &thermal_event_genl_family, 0,
-				 THERMAL_GENL_CMD_EVENT);
-	if (!msg_header) {
-		nlmsg_free(skb);
-		return -ENOMEM;
-	}
-
-	/* fill the data */
-	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
-			   sizeof(struct thermal_genl_event));
-
-	if (!attr) {
-		nlmsg_free(skb);
-		return -EINVAL;
-	}
-
-	thermal_event = nla_data(attr);
-	if (!thermal_event) {
-		nlmsg_free(skb);
-		return -EINVAL;
-	}
-
-	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
-
-	thermal_event->orig = tz->id;
-	thermal_event->event = event;
-
-	/* send multicast genetlink message */
-	result = genlmsg_end(skb, msg_header);
-	if (result < 0) {
-		nlmsg_free(skb);
-		return result;
-	}
-
-	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
-	if (result)
-		dev_err(&tz->device, "Failed to send netlink event:%d", result);
-
-	return result;
-}
-EXPORT_SYMBOL(thermal_generate_netlink_event);
-
-static int genetlink_init(void)
-{
-	int result;
-
-	result = genl_register_family(&thermal_event_genl_family);
-	if (result)
-		return result;
-
-	result = genl_register_mc_group(&thermal_event_genl_family,
-					&thermal_event_mcgrp);
-	if (result)
-		genl_unregister_family(&thermal_event_genl_family);
-	return result;
-}
-
-static void genetlink_exit(void)
-{
-	genl_unregister_family(&thermal_event_genl_family);
-}
-#else /* !CONFIG_NET */
-static inline int genetlink_init(void) { return 0; }
-static inline void genetlink_exit(void) {}
-#endif /* !CONFIG_NET */
-
-static int __init thermal_init(void)
-{
-	int result = 0;
-
-	result = class_register(&thermal_class);
-	if (result) {
-		idr_destroy(&thermal_tz_idr);
-		idr_destroy(&thermal_cdev_idr);
-		mutex_destroy(&thermal_idr_lock);
-		mutex_destroy(&thermal_list_lock);
-		return result;
-	}
-	result = genetlink_init();
-	return result;
-}
-
-static void __exit thermal_exit(void)
-{
-	class_unregister(&thermal_class);
-	idr_destroy(&thermal_tz_idr);
-	idr_destroy(&thermal_cdev_idr);
-	mutex_destroy(&thermal_idr_lock);
-	mutex_destroy(&thermal_list_lock);
-	genetlink_exit();
-}
-
-fs_initcall(thermal_init);
-module_exit(thermal_exit);
-- 
1.7.9.5

[RFC PATCH 2/5] Thermal: thermal framework registration failure case cleanup

[Zhang Rui]

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/thermal/thermal_core.c |   12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 5b7863a..845ed6e 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1863,13 +1863,9 @@ static int __init thermal_init(void)
 	int result = 0;
 
 	result = class_register(&thermal_class);
-	if (result) {
-		idr_destroy(&thermal_tz_idr);
-		idr_destroy(&thermal_cdev_idr);
-		mutex_destroy(&thermal_idr_lock);
-		mutex_destroy(&thermal_list_lock);
+	if (result)
 		return result;
-	}
+
 	result = genetlink_init();
 	return result;
 }
@@ -1877,10 +1873,6 @@ static int __init thermal_init(void)
 static void __exit thermal_exit(void)
 {
 	class_unregister(&thermal_class);
-	idr_destroy(&thermal_tz_idr);
-	idr_destroy(&thermal_cdev_idr);
-	mutex_destroy(&thermal_idr_lock);
-	mutex_destroy(&thermal_list_lock);
 	genetlink_exit();
 }
 
-- 
1.7.9.5

[RFC PATCH 3/5] Thermal: build thermal governors into thermal_sys module

[Zhang Rui]

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/thermal/Makefile       |    6 +++---
 drivers/thermal/fair_share.c   |   15 ++-------------
 drivers/thermal/step_wise.c    |   16 ++--------------
 drivers/thermal/thermal_core.c |   36 ++++++++++++++++++++++++++++++++++--
 drivers/thermal/thermal_core.h |   25 +++++++++++++++++++++++++
 drivers/thermal/user_space.c   |   15 ++-------------
 include/linux/thermal.h        |    1 -
 7 files changed, 68 insertions(+), 46 deletions(-)

diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index b2009bd..b7fffc7 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -6,9 +6,9 @@ obj-$(CONFIG_THERMAL)		+= thermal_sys.o
 thermal_sys-y			+= thermal_core.o
 
 # governors
-obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
-obj-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
-obj-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
+thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
+thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
+thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
 
 # cpufreq cooling
 obj-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c
index 792479f..944ba2f 100644
--- a/drivers/thermal/fair_share.c
+++ b/drivers/thermal/fair_share.c
@@ -22,9 +22,6 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
 #include <linux/thermal.h>
 
 #include "thermal_core.h"
@@ -111,23 +108,15 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip)
 static struct thermal_governor thermal_gov_fair_share = {
 	.name		= "fair_share",
 	.throttle	= fair_share_throttle,
-	.owner		= THIS_MODULE,
 };
 
-static int __init thermal_gov_fair_share_init(void)
+int thermal_gov_fair_share_register(void)
 {
 	return thermal_register_governor(&thermal_gov_fair_share);
 }
 
-static void __exit thermal_gov_fair_share_exit(void)
+void thermal_gov_fair_share_unregister(void)
 {
 	thermal_unregister_governor(&thermal_gov_fair_share);
 }
 
-/* This should load after thermal framework */
-fs_initcall(thermal_gov_fair_share_init);
-module_exit(thermal_gov_fair_share_exit);
-
-MODULE_AUTHOR("Durgadoss R");
-MODULE_DESCRIPTION("A simple weight based thermal throttling governor");
-MODULE_LICENSE("GPL");
diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
index 407cde3..a6c9666 100644
--- a/drivers/thermal/step_wise.c
+++ b/drivers/thermal/step_wise.c
@@ -22,9 +22,6 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
 #include <linux/thermal.h>
 
 #include "thermal_core.h"
@@ -180,23 +177,14 @@ static int step_wise_throttle(struct thermal_zone_device *tz, int trip)
 static struct thermal_governor thermal_gov_step_wise = {
 	.name		= "step_wise",
 	.throttle	= step_wise_throttle,
-	.owner		= THIS_MODULE,
 };
 
-static int __init thermal_gov_step_wise_init(void)
+int thermal_gov_step_wise_register(void)
 {
 	return thermal_register_governor(&thermal_gov_step_wise);
 }
 
-static void __exit thermal_gov_step_wise_exit(void)
+void thermal_gov_step_wise_unregister(void)
 {
 	thermal_unregister_governor(&thermal_gov_step_wise);
 }
-
-/* This should load after thermal framework */
-fs_initcall(thermal_gov_step_wise_init);
-module_exit(thermal_gov_step_wise_exit);
-
-MODULE_AUTHOR("Durgadoss R");
-MODULE_DESCRIPTION("A step-by-step thermal throttling governor");
-MODULE_LICENSE("GPL");
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 845ed6e..eac9745 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1858,22 +1858,54 @@ static inline int genetlink_init(void) { return 0; }
 static inline void genetlink_exit(void) {}
 #endif /* !CONFIG_NET */
 
+static int __init thermal_register_governors(void)
+{
+	int result;
+
+	result = thermal_gov_step_wise_register();
+	if (result)
+		return result;
+
+	result = thermal_gov_fair_share_register();
+	if (result)
+		return result;
+
+	result = thermal_gov_user_space_register();
+
+	return result;
+}
+
+static void __exit thermal_unregister_governors(void)
+{
+	thermal_gov_step_wise_unregister();
+	thermal_gov_fair_share_unregister();
+	thermal_gov_user_space_unregister();
+}
+
 static int __init thermal_init(void)
 {
-	int result = 0;
+	int result;
+
+	result = thermal_register_governors();
+	if (result)
+		return result;
 
 	result = class_register(&thermal_class);
 	if (result)
 		return result;
 
 	result = genetlink_init();
+	if (result)
+		class_unregister(&thermal_class);
+
 	return result;
 }
 
 static void __exit thermal_exit(void)
 {
-	class_unregister(&thermal_class);
 	genetlink_exit();
+	class_unregister(&thermal_class);
+	thermal_unregister_governors();
 }
 
 fs_initcall(thermal_init);
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 0d3205a..f84ea0f 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -50,4 +50,29 @@ struct thermal_instance {
 	struct list_head cdev_node; /* node in cdev->thermal_instances */
 };
 
+
+#ifdef CONFIG_THERMAL_GOV_STEP_WISE
+extern int thermal_gov_step_wise_register(void);
+extern void thermal_gov_step_wise_unregister(void);
+#else
+static inline int thermal_gov_step_wise_register(void) { return 0; }
+static inline void thermal_gov_step_wise_unregister(void) {}
+#endif /* CONFIG_THERMAL_GOV_STEP_WISE */
+
+#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
+extern int thermal_gov_fair_share_register(void);
+extern void thermal_gov_fair_share_unregister(void);
+#else
+static inline int thermal_gov_fair_share_register(void) { return 0; }
+static inline void thermal_gov_fair_share_unregister(void) {}
+#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */
+
+#ifdef CONFIG_THERMAL_GOV_USER_SPACE
+extern int thermal_gov_user_space_register(void);
+extern void thermal_gov_user_space_unregister(void);
+#else
+static inline int thermal_gov_user_space_register(void) { return 0; }
+static inline void thermal_gov_user_space_unregister(void) {}
+#endif /* CONFIG_THERMAL_GOV_USER_SPACE */
+
 #endif /* __THERMAL_CORE_H__ */
diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
index 6bbb380..10adcdd 100644
--- a/drivers/thermal/user_space.c
+++ b/drivers/thermal/user_space.c
@@ -22,9 +22,6 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
 #include <linux/thermal.h>
 
 #include "thermal_core.h"
@@ -46,23 +43,15 @@ static int notify_user_space(struct thermal_zone_device *tz, int trip)
 static struct thermal_governor thermal_gov_user_space = {
 	.name		= "user_space",
 	.throttle	= notify_user_space,
-	.owner		= THIS_MODULE,
 };
 
-static int __init thermal_gov_user_space_init(void)
+int thermal_gov_user_space_register(void)
 {
 	return thermal_register_governor(&thermal_gov_user_space);
 }
 
-static void __exit thermal_gov_user_space_exit(void)
+void thermal_gov_user_space_unregister(void)
 {
 	thermal_unregister_governor(&thermal_gov_user_space);
 }
 
-/* This should load after thermal framework */
-fs_initcall(thermal_gov_user_space_init);
-module_exit(thermal_gov_user_space_exit);
-
-MODULE_AUTHOR("Durgadoss R");
-MODULE_DESCRIPTION("A user space Thermal notifier");
-MODULE_LICENSE("GPL");
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index f0bd7f9..2eeec01 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -184,7 +184,6 @@ struct thermal_governor {
 	char name[THERMAL_NAME_LENGTH];
 	int (*throttle)(struct thermal_zone_device *tz, int trip);
 	struct list_head	governor_list;
-	struct module		*owner;
 };
 
 /* Structure that holds binding parameters for a zone */
-- 
1.7.9.5

[RFC PATCH 4/5] Thermal: governor API cleanup

[Zhang Rui]

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/thermal/thermal_core.c |    2 --
 drivers/thermal/thermal_core.h |    2 ++
 include/linux/thermal.h        |    3 ---
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index eac9745..f645757 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -99,7 +99,6 @@ int thermal_register_governor(struct thermal_governor *governor)
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(thermal_register_governor);
 
 void thermal_unregister_governor(struct thermal_governor *governor)
 {
@@ -127,7 +126,6 @@ void thermal_unregister_governor(struct thermal_governor *governor)
 	mutex_unlock(&thermal_governor_lock);
 	return;
 }
-EXPORT_SYMBOL_GPL(thermal_unregister_governor);
 
 static int get_idr(struct idr *idr, struct mutex *lock, int *id)
 {
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index f84ea0f..a1f8278 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -50,6 +50,8 @@ struct thermal_instance {
 	struct list_head cdev_node; /* node in cdev->thermal_instances */
 };
 
+extern int thermal_register_governor(struct thermal_governor *);
+extern void thermal_unregister_governor(struct thermal_governor *);
 
 #ifdef CONFIG_THERMAL_GOV_STEP_WISE
 extern int thermal_gov_step_wise_register(void);
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 2eeec01..af03ea6 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -243,9 +243,6 @@ struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
 void thermal_cdev_update(struct thermal_cooling_device *);
 void notify_thermal_framework(struct thermal_zone_device *, int);
 
-int thermal_register_governor(struct thermal_governor *);
-void thermal_unregister_governor(struct thermal_governor *);
-
 #ifdef CONFIG_NET
 extern int thermal_generate_netlink_event(struct thermal_zone_device *tz,
 						enum events event);
-- 
1.7.9.5

[RFC PATCH 5/5] Thermal: build cpu_cooling code into thermal_sys module

[Zhang Rui]

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/thermal/Kconfig     |    2 +-
 drivers/thermal/Makefile    |    2 +-
 include/linux/cpu_cooling.h |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index a764f16..10014de 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -67,7 +67,7 @@ config THERMAL_GOV_USER_SPACE
 	  Enable this to let the user space manage the platform thermals.
 
 config CPU_THERMAL
-	tristate "generic cpu cooling support"
+	bool "generic cpu cooling support"
 	depends on CPU_FREQ
 	select CPU_FREQ_TABLE
 	help
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index b7fffc7..cae124f 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -11,7 +11,7 @@ thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
 thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
 
 # cpufreq cooling
-obj-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
+thermal_sys-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
 
 # platform thermal drivers
 obj-$(CONFIG_SPEAR_THERMAL)	+= spear_thermal.o
diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h
index 40b4ef5..b30cc79c 100644
--- a/include/linux/cpu_cooling.h
+++ b/include/linux/cpu_cooling.h
@@ -29,7 +29,7 @@
 #define CPUFREQ_COOLING_START		0
 #define CPUFREQ_COOLING_STOP		1
 
-#if defined(CONFIG_CPU_THERMAL) || defined(CONFIG_CPU_THERMAL_MODULE)
+#ifdef CONFIG_CPU_THERMAL
 /**
  * cpufreq_cooling_register - function to create cpufreq cooling device.
  * @clip_cpus: cpumask of cpus where the frequency constraints will happen
-- 
1.7.9.5

RE: [RFC PATCH 3/5] Thermal: build thermal governors into thermal_sys module

[R, Durgadoss]

Hi Rui,

> -----Original Message-----
> From: Zhang, Rui
> Sent: Tuesday, March 26, 2013 9:56 PM
> To: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> Cc: amit.daniel@samsung.com; R, Durgadoss; andi@lisas.de; Zhang, Rui
> Subject: [RFC PATCH 3/5] Thermal: build thermal governors into thermal_sys
> module
> 
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> ---
>  drivers/thermal/Makefile       |    6 +++---
>  drivers/thermal/fair_share.c   |   15 ++-------------
>  drivers/thermal/step_wise.c    |   16 ++--------------
>  drivers/thermal/thermal_core.c |   36
> ++++++++++++++++++++++++++++++++++--
>  drivers/thermal/thermal_core.h |   25 +++++++++++++++++++++++++
>  drivers/thermal/user_space.c   |   15 ++-------------
>  include/linux/thermal.h        |    1 -
>  7 files changed, 68 insertions(+), 46 deletions(-)
> 
> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> index b2009bd..b7fffc7 100644
> --- a/drivers/thermal/Makefile
> +++ b/drivers/thermal/Makefile
> @@ -6,9 +6,9 @@ obj-$(CONFIG_THERMAL)		+= thermal_sys.o
>  thermal_sys-y			+= thermal_core.o
> 
>  # governors
> -obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> -obj-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
> -obj-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
> +thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+=
> fair_share.o
> +thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
> +thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+=
> user_space.o
> 
>  # cpufreq cooling
>  obj-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
> diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c
> index 792479f..944ba2f 100644
> --- a/drivers/thermal/fair_share.c
> +++ b/drivers/thermal/fair_share.c
> @@ -22,9 +22,6 @@
>   *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
>   */
> 
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
>  #include <linux/thermal.h>
> 
>  #include "thermal_core.h"
> @@ -111,23 +108,15 @@ static int fair_share_throttle(struct
> thermal_zone_device *tz, int trip)
>  static struct thermal_governor thermal_gov_fair_share = {
>  	.name		= "fair_share",
>  	.throttle	= fair_share_throttle,
> -	.owner		= THIS_MODULE,
>  };
> 
> -static int __init thermal_gov_fair_share_init(void)
> +int thermal_gov_fair_share_register(void)
>  {
>  	return thermal_register_governor(&thermal_gov_fair_share);
>  }
> 
> -static void __exit thermal_gov_fair_share_exit(void)
> +void thermal_gov_fair_share_unregister(void)
>  {
>  	thermal_unregister_governor(&thermal_gov_fair_share);
>  }
> 
> -/* This should load after thermal framework */
> -fs_initcall(thermal_gov_fair_share_init);
> -module_exit(thermal_gov_fair_share_exit);
> -
> -MODULE_AUTHOR("Durgadoss R");
> -MODULE_DESCRIPTION("A simple weight based thermal throttling
> governor");
> -MODULE_LICENSE("GPL");
> diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
> index 407cde3..a6c9666 100644
> --- a/drivers/thermal/step_wise.c
> +++ b/drivers/thermal/step_wise.c
> @@ -22,9 +22,6 @@
>   *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
>   */
> 
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
>  #include <linux/thermal.h>
> 
>  #include "thermal_core.h"
> @@ -180,23 +177,14 @@ static int step_wise_throttle(struct
> thermal_zone_device *tz, int trip)
>  static struct thermal_governor thermal_gov_step_wise = {
>  	.name		= "step_wise",
>  	.throttle	= step_wise_throttle,
> -	.owner		= THIS_MODULE,
>  };
> 
> -static int __init thermal_gov_step_wise_init(void)
> +int thermal_gov_step_wise_register(void)
>  {
>  	return thermal_register_governor(&thermal_gov_step_wise);
>  }
> 
> -static void __exit thermal_gov_step_wise_exit(void)
> +void thermal_gov_step_wise_unregister(void)
>  {
>  	thermal_unregister_governor(&thermal_gov_step_wise);
>  }
> -
> -/* This should load after thermal framework */
> -fs_initcall(thermal_gov_step_wise_init);
> -module_exit(thermal_gov_step_wise_exit);
> -
> -MODULE_AUTHOR("Durgadoss R");
> -MODULE_DESCRIPTION("A step-by-step thermal throttling governor");
> -MODULE_LICENSE("GPL");
> diff --git a/drivers/thermal/thermal_core.c
> b/drivers/thermal/thermal_core.c
> index 845ed6e..eac9745 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1858,22 +1858,54 @@ static inline int genetlink_init(void) { return 0; }
>  static inline void genetlink_exit(void) {}
>  #endif /* !CONFIG_NET */
> 
> +static int __init thermal_register_governors(void)
> +{
> +	int result;
> +
> +	result = thermal_gov_step_wise_register();
> +	if (result)

[Patches 1,2 are fine with me].

A pr_err statement here, saying the registration failed,
would help us a lot.

> +		return result;
> +
> +	result = thermal_gov_fair_share_register();
> +	if (result)
> +		return result;
> +
> +	result = thermal_gov_user_space_register();

Same check + print statement for the other two as well.

> +
> +	return result;
> +}
> +
> +static void __exit thermal_unregister_governors(void)
> +{
> +	thermal_gov_step_wise_unregister();
> +	thermal_gov_fair_share_unregister();
> +	thermal_gov_user_space_unregister();
> +}
> +
>  static int __init thermal_init(void)
>  {
> -	int result = 0;
> +	int result;
> +
> +	result = thermal_register_governors();
> +	if (result)
> +		return result;
> 
>  	result = class_register(&thermal_class);
>  	if (result)

Shouldn't we do thermal_unregister_governors here ?

>  		return result;
> 
>  	result = genetlink_init();
> +	if (result)
> +		class_unregister(&thermal_class);

Shouldn't we do thermal_unregister_governors here ?
Probably a goto would make things simpler..

> +
>  	return result;
>  }
> 
>  static void __exit thermal_exit(void)
>  {
> -	class_unregister(&thermal_class);
>  	genetlink_exit();
> +	class_unregister(&thermal_class);
> +	thermal_unregister_governors();
>  }
> 
>  fs_initcall(thermal_init);
> diff --git a/drivers/thermal/thermal_core.h
> b/drivers/thermal/thermal_core.h
> index 0d3205a..f84ea0f 100644
> --- a/drivers/thermal/thermal_core.h
> +++ b/drivers/thermal/thermal_core.h
> @@ -50,4 +50,29 @@ struct thermal_instance {
>  	struct list_head cdev_node; /* node in cdev->thermal_instances */
>  };
> 
> +
> +#ifdef CONFIG_THERMAL_GOV_STEP_WISE
> +extern int thermal_gov_step_wise_register(void);
> +extern void thermal_gov_step_wise_unregister(void);
> +#else
> +static inline int thermal_gov_step_wise_register(void) { return 0; }
> +static inline void thermal_gov_step_wise_unregister(void) {}
> +#endif /* CONFIG_THERMAL_GOV_STEP_WISE */
> +
> +#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
> +extern int thermal_gov_fair_share_register(void);
> +extern void thermal_gov_fair_share_unregister(void);
> +#else
> +static inline int thermal_gov_fair_share_register(void) { return 0; }
> +static inline void thermal_gov_fair_share_unregister(void) {}
> +#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */
> +
> +#ifdef CONFIG_THERMAL_GOV_USER_SPACE
> +extern int thermal_gov_user_space_register(void);
> +extern void thermal_gov_user_space_unregister(void);
> +#else
> +static inline int thermal_gov_user_space_register(void) { return 0; }
> +static inline void thermal_gov_user_space_unregister(void) {}
> +#endif /* CONFIG_THERMAL_GOV_USER_SPACE */
> +
>  #endif /* __THERMAL_CORE_H__ */
> diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
> index 6bbb380..10adcdd 100644
> --- a/drivers/thermal/user_space.c
> +++ b/drivers/thermal/user_space.c
> @@ -22,9 +22,6 @@
>   *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
>   */
> 
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
>  #include <linux/thermal.h>
> 
>  #include "thermal_core.h"
> @@ -46,23 +43,15 @@ static int notify_user_space(struct
> thermal_zone_device *tz, int trip)
>  static struct thermal_governor thermal_gov_user_space = {
>  	.name		= "user_space",
>  	.throttle	= notify_user_space,
> -	.owner		= THIS_MODULE,
>  };
> 
> -static int __init thermal_gov_user_space_init(void)
> +int thermal_gov_user_space_register(void)
>  {
>  	return thermal_register_governor(&thermal_gov_user_space);
>  }
> 
> -static void __exit thermal_gov_user_space_exit(void)
> +void thermal_gov_user_space_unregister(void)
>  {
>  	thermal_unregister_governor(&thermal_gov_user_space);
>  }
> 
> -/* This should load after thermal framework */
> -fs_initcall(thermal_gov_user_space_init);
> -module_exit(thermal_gov_user_space_exit);
> -
> -MODULE_AUTHOR("Durgadoss R");
> -MODULE_DESCRIPTION("A user space Thermal notifier");
> -MODULE_LICENSE("GPL");
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index f0bd7f9..2eeec01 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -184,7 +184,6 @@ struct thermal_governor {
>  	char name[THERMAL_NAME_LENGTH];
>  	int (*throttle)(struct thermal_zone_device *tz, int trip);
>  	struct list_head	governor_list;
> -	struct module		*owner;
>  };
> 
>  /* Structure that holds binding parameters for a zone */
> --
> 1.7.9.5

RE: [RFC PATCH 1/5] Thermal: rename thermal_sys.c to thermal_core.c

[R, Durgadoss]

> -----Original Message-----
> From: Zhang, Rui
> Sent: Tuesday, March 26, 2013 9:56 PM
> To: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> Cc: amit.daniel@samsung.com; R, Durgadoss; andi@lisas.de; Zhang, Rui
> Subject: [RFC PATCH 1/5] Thermal: rename thermal_sys.c to thermal_core.c
> 
> No functional change in this patch.
> 
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> ---
>  drivers/thermal/Makefile       |    1 +
>  drivers/thermal/thermal_core.c | 1888
> ++++++++++++++++++++++++++++++++++++++++
>  drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
>  3 files changed, 1889 insertions(+), 1888 deletions(-)
>  create mode 100644 drivers/thermal/thermal_core.c
>  delete mode 100644 drivers/thermal/thermal_sys.c
> 
> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> index d3a2b38..b2009bd 100644
> --- a/drivers/thermal/Makefile
> +++ b/drivers/thermal/Makefile
> @@ -3,6 +3,7 @@
>  #
> 
>  obj-$(CONFIG_THERMAL)		+= thermal_sys.o

Should we keep the _sys suffix ?
Can we just rename it to thermal.o ?

> +thermal_sys-y			+= thermal_core.o
> 
>  # governors
>  obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> diff --git a/drivers/thermal/thermal_core.c
> b/drivers/thermal/thermal_core.c
> new file mode 100644
> index 0000000..5b7863a
> --- /dev/null
> +++ b/drivers/thermal/thermal_core.c
> @@ -0,0 +1,1888 @@
> +/*
> + *  thermal.c - Generic Thermal Management Sysfs support.
> + *
> + *  Copyright (C) 2008 Intel Corp
> + *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> + *
> + *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> + *
> + *  This program is free software; you can redistribute it and/or modify
> + *  it under the terms of the GNU General Public License as published by
> + *  the Free Software Foundation; version 2 of the License.
> + *
> + *  This program is distributed in the hope that it will be useful, but
> + *  WITHOUT ANY WARRANTY; without even the implied warranty of
> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> GNU
> + *  General Public License for more details.
> + *
> + *  You should have received a copy of the GNU General Public License
> along
> + *  with this program; if not, write to the Free Software Foundation, Inc.,
> + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> + *
> + *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> + */
> +
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +
> +#include <linux/module.h>
> +#include <linux/device.h>
> +#include <linux/err.h>
> +#include <linux/slab.h>
> +#include <linux/kdev_t.h>
> +#include <linux/idr.h>
> +#include <linux/thermal.h>
> +#include <linux/reboot.h>
> +#include <net/netlink.h>
> +#include <net/genetlink.h>
> +
> +#include "thermal_core.h"
> +
> +MODULE_AUTHOR("Zhang Rui");
> +MODULE_DESCRIPTION("Generic thermal management sysfs support");
> +MODULE_LICENSE("GPL");
> +
> +static DEFINE_IDR(thermal_tz_idr);
> +static DEFINE_IDR(thermal_cdev_idr);
> +static DEFINE_MUTEX(thermal_idr_lock);
> +
> +static LIST_HEAD(thermal_tz_list);
> +static LIST_HEAD(thermal_cdev_list);
> +static LIST_HEAD(thermal_governor_list);
> +
> +static DEFINE_MUTEX(thermal_list_lock);
> +static DEFINE_MUTEX(thermal_governor_lock);
> +
> +static struct thermal_governor *__find_governor(const char *name)
> +{
> +	struct thermal_governor *pos;
> +
> +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> +			return pos;
> +
> +	return NULL;
> +}
> +
> +int thermal_register_governor(struct thermal_governor *governor)
> +{
> +	int err;
> +	const char *name;
> +	struct thermal_zone_device *pos;
> +
> +	if (!governor)
> +		return -EINVAL;
> +
> +	mutex_lock(&thermal_governor_lock);
> +
> +	err = -EBUSY;
> +	if (__find_governor(governor->name) == NULL) {
> +		err = 0;
> +		list_add(&governor->governor_list,
> &thermal_governor_list);
> +	}
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> +		if (pos->governor)
> +			continue;
> +		if (pos->tzp)
> +			name = pos->tzp->governor_name;
> +		else
> +			name = DEFAULT_THERMAL_GOVERNOR;
> +		if (!strnicmp(name, governor->name,
> THERMAL_NAME_LENGTH))
> +			pos->governor = governor;
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +	mutex_unlock(&thermal_governor_lock);
> +
> +	return err;
> +}
> +EXPORT_SYMBOL_GPL(thermal_register_governor);
> +
> +void thermal_unregister_governor(struct thermal_governor *governor)
> +{
> +	struct thermal_zone_device *pos;
> +
> +	if (!governor)
> +		return;
> +
> +	mutex_lock(&thermal_governor_lock);
> +
> +	if (__find_governor(governor->name) == NULL)
> +		goto exit;
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> +		if (!strnicmp(pos->governor->name, governor->name,
> +						THERMAL_NAME_LENGTH))
> +			pos->governor = NULL;
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +	list_del(&governor->governor_list);
> +exit:
> +	mutex_unlock(&thermal_governor_lock);
> +	return;
> +}
> +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> +
> +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> +{
> +	int ret;
> +
> +	if (lock)
> +		mutex_lock(lock);
> +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> +	if (lock)
> +		mutex_unlock(lock);
> +	if (unlikely(ret < 0))
> +		return ret;
> +	*id = ret;
> +	return 0;
> +}
> +
> +static void release_idr(struct idr *idr, struct mutex *lock, int id)
> +{
> +	if (lock)
> +		mutex_lock(lock);
> +	idr_remove(idr, id);
> +	if (lock)
> +		mutex_unlock(lock);
> +}
> +
> +int get_tz_trend(struct thermal_zone_device *tz, int trip)
> +{
> +	enum thermal_trend trend;
> +
> +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> +		if (tz->temperature > tz->last_temperature)
> +			trend = THERMAL_TREND_RAISING;
> +		else if (tz->temperature < tz->last_temperature)
> +			trend = THERMAL_TREND_DROPPING;
> +		else
> +			trend = THERMAL_TREND_STABLE;
> +	}
> +
> +	return trend;
> +}
> +EXPORT_SYMBOL(get_tz_trend);
> +
> +struct thermal_instance *get_thermal_instance(struct
> thermal_zone_device *tz,
> +			struct thermal_cooling_device *cdev, int trip)
> +{
> +	struct thermal_instance *pos = NULL;
> +	struct thermal_instance *target_instance = NULL;
> +
> +	mutex_lock(&tz->lock);
> +	mutex_lock(&cdev->lock);
> +
> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> +			target_instance = pos;
> +			break;
> +		}
> +	}
> +
> +	mutex_unlock(&cdev->lock);
> +	mutex_unlock(&tz->lock);
> +
> +	return target_instance;
> +}
> +EXPORT_SYMBOL(get_thermal_instance);
> +
> +static void print_bind_err_msg(struct thermal_zone_device *tz,
> +			struct thermal_cooling_device *cdev, int ret)
> +{
> +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> +				tz->type, cdev->type, ret);
> +}
> +
> +static void __bind(struct thermal_zone_device *tz, int mask,
> +			struct thermal_cooling_device *cdev)
> +{
> +	int i, ret;
> +
> +	for (i = 0; i < tz->trips; i++) {
> +		if (mask & (1 << i)) {
> +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> +					THERMAL_NO_LIMIT,
> THERMAL_NO_LIMIT);
> +			if (ret)
> +				print_bind_err_msg(tz, cdev, ret);
> +		}
> +	}
> +}
> +
> +static void __unbind(struct thermal_zone_device *tz, int mask,
> +			struct thermal_cooling_device *cdev)
> +{
> +	int i;
> +
> +	for (i = 0; i < tz->trips; i++)
> +		if (mask & (1 << i))
> +			thermal_zone_unbind_cooling_device(tz, i, cdev);
> +}
> +
> +static void bind_cdev(struct thermal_cooling_device *cdev)
> +{
> +	int i, ret;
> +	const struct thermal_zone_params *tzp;
> +	struct thermal_zone_device *pos = NULL;
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> +		if (!pos->tzp && !pos->ops->bind)
> +			continue;
> +
> +		if (!pos->tzp && pos->ops->bind) {
> +			ret = pos->ops->bind(pos, cdev);
> +			if (ret)
> +				print_bind_err_msg(pos, cdev, ret);
> +		}
> +
> +		tzp = pos->tzp;
> +		if (!tzp || !tzp->tbp)
> +			continue;
> +
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> +				continue;
> +			if (tzp->tbp[i].match(pos, cdev))
> +				continue;
> +			tzp->tbp[i].cdev = cdev;
> +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> +		}
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +}
> +
> +static void bind_tz(struct thermal_zone_device *tz)
> +{
> +	int i, ret;
> +	struct thermal_cooling_device *pos = NULL;
> +	const struct thermal_zone_params *tzp = tz->tzp;
> +
> +	if (!tzp && !tz->ops->bind)
> +		return;
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	/* If there is no platform data, try to use ops->bind */
> +	if (!tzp && tz->ops->bind) {
> +		list_for_each_entry(pos, &thermal_cdev_list, node) {
> +			ret = tz->ops->bind(tz, pos);
> +			if (ret)
> +				print_bind_err_msg(tz, pos, ret);
> +		}
> +		goto exit;
> +	}
> +
> +	if (!tzp || !tzp->tbp)
> +		goto exit;
> +
> +	list_for_each_entry(pos, &thermal_cdev_list, node) {
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> +				continue;
> +			if (tzp->tbp[i].match(tz, pos))
> +				continue;
> +			tzp->tbp[i].cdev = pos;
> +			__bind(tz, tzp->tbp[i].trip_mask, pos);
> +		}
> +	}
> +exit:
> +	mutex_unlock(&thermal_list_lock);
> +}
> +
> +static void thermal_zone_device_set_polling(struct thermal_zone_device
> *tz,
> +					    int delay)
> +{
> +	if (delay > 1000)
> +		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> +				 round_jiffies(msecs_to_jiffies(delay)));
> +	else if (delay)
> +		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> +				 msecs_to_jiffies(delay));
> +	else
> +		cancel_delayed_work(&tz->poll_queue);
> +}
> +
> +static void monitor_thermal_zone(struct thermal_zone_device *tz)
> +{
> +	mutex_lock(&tz->lock);
> +
> +	if (tz->passive)
> +		thermal_zone_device_set_polling(tz, tz->passive_delay);
> +	else if (tz->polling_delay)
> +		thermal_zone_device_set_polling(tz, tz->polling_delay);
> +	else
> +		thermal_zone_device_set_polling(tz, 0);
> +
> +	mutex_unlock(&tz->lock);
> +}
> +
> +static void handle_non_critical_trips(struct thermal_zone_device *tz,
> +			int trip, enum thermal_trip_type trip_type)
> +{
> +	if (tz->governor)
> +		tz->governor->throttle(tz, trip);
> +}
> +
> +static void handle_critical_trips(struct thermal_zone_device *tz,
> +				int trip, enum thermal_trip_type trip_type)
> +{
> +	long trip_temp;
> +
> +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> +
> +	/* If we have not crossed the trip_temp, we do not care. */
> +	if (tz->temperature < trip_temp)
> +		return;
> +
> +	if (tz->ops->notify)
> +		tz->ops->notify(tz, trip, trip_type);
> +
> +	if (trip_type == THERMAL_TRIP_CRITICAL) {
> +		dev_emerg(&tz->device,
> +			  "critical temperature reached(%d C),shutting
> down\n",
> +			  tz->temperature / 1000);
> +		orderly_poweroff(true);
> +	}
> +}
> +
> +static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> +{
> +	enum thermal_trip_type type;
> +
> +	tz->ops->get_trip_type(tz, trip, &type);
> +
> +	if (type == THERMAL_TRIP_CRITICAL || type ==
> THERMAL_TRIP_HOT)
> +		handle_critical_trips(tz, trip, type);
> +	else
> +		handle_non_critical_trips(tz, trip, type);
> +	/*
> +	 * Alright, we handled this trip successfully.
> +	 * So, start monitoring again.
> +	 */
> +	monitor_thermal_zone(tz);
> +}
> +
> +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> +				unsigned long *temp)
> +{
> +	int ret = 0;
> +#ifdef CONFIG_THERMAL_EMULATION
> +	int count;
> +	unsigned long crit_temp = -1UL;
> +	enum thermal_trip_type type;
> +#endif
> +
> +	mutex_lock(&tz->lock);
> +
> +	ret = tz->ops->get_temp(tz, temp);
> +#ifdef CONFIG_THERMAL_EMULATION
> +	if (!tz->emul_temperature)
> +		goto skip_emul;
> +
> +	for (count = 0; count < tz->trips; count++) {
> +		ret = tz->ops->get_trip_type(tz, count, &type);
> +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> +			break;
> +		}
> +	}
> +
> +	if (ret)
> +		goto skip_emul;
> +
> +	if (*temp < crit_temp)
> +		*temp = tz->emul_temperature;
> +skip_emul:
> +#endif
> +	mutex_unlock(&tz->lock);
> +	return ret;
> +}
> +
> +static void update_temperature(struct thermal_zone_device *tz)
> +{
> +	long temp;
> +	int ret;
> +
> +	ret = thermal_zone_get_temp(tz, &temp);
> +	if (ret) {
> +		dev_warn(&tz->device, "failed to read out thermal zone
> %d\n",
> +			 tz->id);
> +		return;
> +	}
> +
> +	mutex_lock(&tz->lock);
> +	tz->last_temperature = tz->temperature;
> +	tz->temperature = temp;
> +	mutex_unlock(&tz->lock);
> +}
> +
> +void thermal_zone_device_update(struct thermal_zone_device *tz)
> +{
> +	int count;
> +
> +	update_temperature(tz);
> +
> +	for (count = 0; count < tz->trips; count++)
> +		handle_thermal_trip(tz, count);
> +}
> +EXPORT_SYMBOL(thermal_zone_device_update);
> +
> +static void thermal_zone_device_check(struct work_struct *work)
> +{
> +	struct thermal_zone_device *tz = container_of(work, struct
> +						      thermal_zone_device,
> +						      poll_queue.work);
> +	thermal_zone_device_update(tz);
> +}
> +
> +/* sys I/F for thermal zone */
> +
> +#define to_thermal_zone(_dev) \
> +	container_of(_dev, struct thermal_zone_device, device)
> +
> +static ssize_t
> +type_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +
> +	return sprintf(buf, "%s\n", tz->type);
> +}
> +
> +static ssize_t
> +temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	long temperature;
> +	int ret;
> +
> +	ret = thermal_zone_get_temp(tz, &temperature);
> +
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	enum thermal_device_mode mode;
> +	int result;
> +
> +	if (!tz->ops->get_mode)
> +		return -EPERM;
> +
> +	result = tz->ops->get_mode(tz, &mode);
> +	if (result)
> +		return result;
> +
> +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ?
> "enabled"
> +		       : "disabled");
> +}
> +
> +static ssize_t
> +mode_store(struct device *dev, struct device_attribute *attr,
> +	   const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int result;
> +
> +	if (!tz->ops->set_mode)
> +		return -EPERM;
> +
> +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> +		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_ENABLED);
> +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> +		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_DISABLED);
> +	else
> +		result = -EINVAL;
> +
> +	if (result)
> +		return result;
> +
> +	return count;
> +}
> +
> +static ssize_t
> +trip_point_type_show(struct device *dev, struct device_attribute *attr,
> +		     char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	enum thermal_trip_type type;
> +	int trip, result;
> +
> +	if (!tz->ops->get_trip_type)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> +		return -EINVAL;
> +
> +	result = tz->ops->get_trip_type(tz, trip, &type);
> +	if (result)
> +		return result;
> +
> +	switch (type) {
> +	case THERMAL_TRIP_CRITICAL:
> +		return sprintf(buf, "critical\n");
> +	case THERMAL_TRIP_HOT:
> +		return sprintf(buf, "hot\n");
> +	case THERMAL_TRIP_PASSIVE:
> +		return sprintf(buf, "passive\n");
> +	case THERMAL_TRIP_ACTIVE:
> +		return sprintf(buf, "active\n");
> +	default:
> +		return sprintf(buf, "unknown\n");
> +	}
> +}
> +
> +static ssize_t
> +trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> +		     const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	unsigned long temperature;
> +
> +	if (!tz->ops->set_trip_temp)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> +		return -EINVAL;
> +
> +	if (kstrtoul(buf, 10, &temperature))
> +		return -EINVAL;
> +
> +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> +
> +	return ret ? ret : count;
> +}
> +
> +static ssize_t
> +trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> +		     char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	long temperature;
> +
> +	if (!tz->ops->get_trip_temp)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> +		return -EINVAL;
> +
> +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> +
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> +			const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	unsigned long temperature;
> +
> +	if (!tz->ops->set_trip_hyst)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> +		return -EINVAL;
> +
> +	if (kstrtoul(buf, 10, &temperature))
> +		return -EINVAL;
> +
> +	/*
> +	 * We are not doing any check on the 'temperature' value
> +	 * here. The driver implementing 'set_trip_hyst' has to
> +	 * take care of this.
> +	 */
> +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> +
> +	return ret ? ret : count;
> +}
> +
> +static ssize_t
> +trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> +			char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	unsigned long temperature;
> +
> +	if (!tz->ops->get_trip_hyst)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> +		return -EINVAL;
> +
> +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> +
> +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +passive_store(struct device *dev, struct device_attribute *attr,
> +		    const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	struct thermal_cooling_device *cdev = NULL;
> +	int state;
> +
> +	if (!sscanf(buf, "%d\n", &state))
> +		return -EINVAL;
> +
> +	/* sanity check: values below 1000 millicelcius don't make sense
> +	 * and can cause the system to go into a thermal heart attack
> +	 */
> +	if (state && state < 1000)
> +		return -EINVAL;
> +
> +	if (state && !tz->forced_passive) {
> +		mutex_lock(&thermal_list_lock);
> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> +			if (!strncmp("Processor", cdev->type,
> +				     sizeof("Processor")))
> +				thermal_zone_bind_cooling_device(tz,
> +						THERMAL_TRIPS_NONE,
> cdev,
> +						THERMAL_NO_LIMIT,
> +						THERMAL_NO_LIMIT);
> +		}
> +		mutex_unlock(&thermal_list_lock);
> +		if (!tz->passive_delay)
> +			tz->passive_delay = 1000;
> +	} else if (!state && tz->forced_passive) {
> +		mutex_lock(&thermal_list_lock);
> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> +			if (!strncmp("Processor", cdev->type,
> +				     sizeof("Processor")))
> +				thermal_zone_unbind_cooling_device(tz,
> +
> THERMAL_TRIPS_NONE,
> +								   cdev);
> +		}
> +		mutex_unlock(&thermal_list_lock);
> +		tz->passive_delay = 0;
> +	}
> +
> +	tz->forced_passive = state;
> +
> +	thermal_zone_device_update(tz);
> +
> +	return count;
> +}
> +
> +static ssize_t
> +passive_show(struct device *dev, struct device_attribute *attr,
> +		   char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +
> +	return sprintf(buf, "%d\n", tz->forced_passive);
> +}
> +
> +static ssize_t
> +policy_store(struct device *dev, struct device_attribute *attr,
> +		    const char *buf, size_t count)
> +{
> +	int ret = -EINVAL;
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	struct thermal_governor *gov;
> +
> +	mutex_lock(&thermal_governor_lock);
> +
> +	gov = __find_governor(buf);
> +	if (!gov)
> +		goto exit;
> +
> +	tz->governor = gov;
> +	ret = count;
> +
> +exit:
> +	mutex_unlock(&thermal_governor_lock);
> +	return ret;
> +}
> +
> +static ssize_t
> +policy_show(struct device *dev, struct device_attribute *devattr, char
> *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +
> +	return sprintf(buf, "%s\n", tz->governor->name);
> +}
> +
> +#ifdef CONFIG_THERMAL_EMULATION
> +static ssize_t
> +emul_temp_store(struct device *dev, struct device_attribute *attr,
> +		     const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int ret = 0;
> +	unsigned long temperature;
> +
> +	if (kstrtoul(buf, 10, &temperature))
> +		return -EINVAL;
> +
> +	if (!tz->ops->set_emul_temp) {
> +		mutex_lock(&tz->lock);
> +		tz->emul_temperature = temperature;
> +		mutex_unlock(&tz->lock);
> +	} else {
> +		ret = tz->ops->set_emul_temp(tz, temperature);
> +	}
> +
> +	return ret ? ret : count;
> +}
> +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> +#endif/*CONFIG_THERMAL_EMULATION*/
> +
> +static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> passive_store);
> +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> policy_store);
> +
> +/* sys I/F for cooling device */
> +#define to_cooling_device(_dev)	\
> +	container_of(_dev, struct thermal_cooling_device, device)
> +
> +static ssize_t
> +thermal_cooling_device_type_show(struct device *dev,
> +				 struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +
> +	return sprintf(buf, "%s\n", cdev->type);
> +}
> +
> +static ssize_t
> +thermal_cooling_device_max_state_show(struct device *dev,
> +				      struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +	unsigned long state;
> +	int ret;
> +
> +	ret = cdev->ops->get_max_state(cdev, &state);
> +	if (ret)
> +		return ret;
> +	return sprintf(buf, "%ld\n", state);
> +}
> +
> +static ssize_t
> +thermal_cooling_device_cur_state_show(struct device *dev,
> +				      struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +	unsigned long state;
> +	int ret;
> +
> +	ret = cdev->ops->get_cur_state(cdev, &state);
> +	if (ret)
> +		return ret;
> +	return sprintf(buf, "%ld\n", state);
> +}
> +
> +static ssize_t
> +thermal_cooling_device_cur_state_store(struct device *dev,
> +				       struct device_attribute *attr,
> +				       const char *buf, size_t count)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +	unsigned long state;
> +	int result;
> +
> +	if (!sscanf(buf, "%ld\n", &state))
> +		return -EINVAL;
> +
> +	if ((long)state < 0)
> +		return -EINVAL;
> +
> +	result = cdev->ops->set_cur_state(cdev, state);
> +	if (result)
> +		return result;
> +	return count;
> +}
> +
> +static struct device_attribute dev_attr_cdev_type =
> +__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> +static DEVICE_ATTR(max_state, 0444,
> +		   thermal_cooling_device_max_state_show, NULL);
> +static DEVICE_ATTR(cur_state, 0644,
> +		   thermal_cooling_device_cur_state_show,
> +		   thermal_cooling_device_cur_state_store);
> +
> +static ssize_t
> +thermal_cooling_device_trip_point_show(struct device *dev,
> +				       struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_instance *instance;
> +
> +	instance =
> +	    container_of(attr, struct thermal_instance, attr);
> +
> +	if (instance->trip == THERMAL_TRIPS_NONE)
> +		return sprintf(buf, "-1\n");
> +	else
> +		return sprintf(buf, "%d\n", instance->trip);
> +}
> +
> +/* Device management */
> +
> +#if defined(CONFIG_THERMAL_HWMON)
> +
> +/* hwmon sys I/F */
> +#include <linux/hwmon.h>
> +
> +/* thermal zone devices with the same type share one hwmon device */
> +struct thermal_hwmon_device {
> +	char type[THERMAL_NAME_LENGTH];
> +	struct device *device;
> +	int count;
> +	struct list_head tz_list;
> +	struct list_head node;
> +};
> +
> +struct thermal_hwmon_attr {
> +	struct device_attribute attr;
> +	char name[16];
> +};
> +
> +/* one temperature input for each thermal zone */
> +struct thermal_hwmon_temp {
> +	struct list_head hwmon_node;
> +	struct thermal_zone_device *tz;
> +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> +};
> +
> +static LIST_HEAD(thermal_hwmon_list);
> +
> +static ssize_t
> +name_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> +	return sprintf(buf, "%s\n", hwmon->type);
> +}
> +static DEVICE_ATTR(name, 0444, name_show, NULL);
> +
> +static ssize_t
> +temp_input_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> +{
> +	long temperature;
> +	int ret;
> +	struct thermal_hwmon_attr *hwmon_attr
> +			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> +	struct thermal_hwmon_temp *temp
> +			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> +				       temp_input);
> +	struct thermal_zone_device *tz = temp->tz;
> +
> +	ret = thermal_zone_get_temp(tz, &temperature);
> +
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +temp_crit_show(struct device *dev, struct device_attribute *attr,
> +		char *buf)
> +{
> +	struct thermal_hwmon_attr *hwmon_attr
> +			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> +	struct thermal_hwmon_temp *temp
> +			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> +				       temp_crit);
> +	struct thermal_zone_device *tz = temp->tz;
> +	long temperature;
> +	int ret;
> +
> +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +
> +static struct thermal_hwmon_device *
> +thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_device *hwmon;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> +		if (!strcmp(hwmon->type, tz->type)) {
> +			mutex_unlock(&thermal_list_lock);
> +			return hwmon;
> +		}
> +	mutex_unlock(&thermal_list_lock);
> +
> +	return NULL;
> +}
> +
> +/* Find the temperature input matching a given thermal zone */
> +static struct thermal_hwmon_temp *
> +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device
> *hwmon,
> +			  const struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_temp *temp;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> +		if (temp->tz == tz) {
> +			mutex_unlock(&thermal_list_lock);
> +			return temp;
> +		}
> +	mutex_unlock(&thermal_list_lock);
> +
> +	return NULL;
> +}
> +
> +static int
> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_device *hwmon;
> +	struct thermal_hwmon_temp *temp;
> +	int new_hwmon_device = 1;
> +	int result;
> +
> +	hwmon = thermal_hwmon_lookup_by_type(tz);
> +	if (hwmon) {
> +		new_hwmon_device = 0;
> +		goto register_sys_interface;
> +	}
> +
> +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device),
> GFP_KERNEL);
> +	if (!hwmon)
> +		return -ENOMEM;
> +
> +	INIT_LIST_HEAD(&hwmon->tz_list);
> +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> +	hwmon->device = hwmon_device_register(NULL);
> +	if (IS_ERR(hwmon->device)) {
> +		result = PTR_ERR(hwmon->device);
> +		goto free_mem;
> +	}
> +	dev_set_drvdata(hwmon->device, hwmon);
> +	result = device_create_file(hwmon->device, &dev_attr_name);
> +	if (result)
> +		goto free_mem;
> +
> + register_sys_interface:
> +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> +	if (!temp) {
> +		result = -ENOMEM;
> +		goto unregister_name;
> +	}
> +
> +	temp->tz = tz;
> +	hwmon->count++;
> +
> +	snprintf(temp->temp_input.name, sizeof(temp-
> >temp_input.name),
> +		 "temp%d_input", hwmon->count);
> +	temp->temp_input.attr.attr.name = temp->temp_input.name;
> +	temp->temp_input.attr.attr.mode = 0444;
> +	temp->temp_input.attr.show = temp_input_show;
> +	sysfs_attr_init(&temp->temp_input.attr.attr);
> +	result = device_create_file(hwmon->device, &temp-
> >temp_input.attr);
> +	if (result)
> +		goto free_temp_mem;
> +
> +	if (tz->ops->get_crit_temp) {
> +		unsigned long temperature;
> +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> +			snprintf(temp->temp_crit.name,
> +				 sizeof(temp->temp_crit.name),
> +				"temp%d_crit", hwmon->count);
> +			temp->temp_crit.attr.attr.name = temp-
> >temp_crit.name;
> +			temp->temp_crit.attr.attr.mode = 0444;
> +			temp->temp_crit.attr.show = temp_crit_show;
> +			sysfs_attr_init(&temp->temp_crit.attr.attr);
> +			result = device_create_file(hwmon->device,
> +						    &temp->temp_crit.attr);
> +			if (result)
> +				goto unregister_input;
> +		}
> +	}
> +
> +	mutex_lock(&thermal_list_lock);
> +	if (new_hwmon_device)
> +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	return 0;
> +
> + unregister_input:
> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> + free_temp_mem:
> +	kfree(temp);
> + unregister_name:
> +	if (new_hwmon_device) {
> +		device_remove_file(hwmon->device, &dev_attr_name);
> +		hwmon_device_unregister(hwmon->device);
> +	}
> + free_mem:
> +	if (new_hwmon_device)
> +		kfree(hwmon);
> +
> +	return result;
> +}
> +
> +static void
> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_device *hwmon;
> +	struct thermal_hwmon_temp *temp;
> +
> +	hwmon = thermal_hwmon_lookup_by_type(tz);
> +	if (unlikely(!hwmon)) {
> +		/* Should never happen... */
> +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> +		return;
> +	}
> +
> +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> +	if (unlikely(!temp)) {
> +		/* Should never happen... */
> +		dev_dbg(&tz->device, "temperature input lookup
> failed!\n");
> +		return;
> +	}
> +
> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> +	if (tz->ops->get_crit_temp)
> +		device_remove_file(hwmon->device, &temp-
> >temp_crit.attr);
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_del(&temp->hwmon_node);
> +	kfree(temp);
> +	if (!list_empty(&hwmon->tz_list)) {
> +		mutex_unlock(&thermal_list_lock);
> +		return;
> +	}
> +	list_del(&hwmon->node);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	device_remove_file(hwmon->device, &dev_attr_name);
> +	hwmon_device_unregister(hwmon->device);
> +	kfree(hwmon);
> +}
> +#else
> +static int
> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +	return 0;
> +}
> +
> +static void
> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +}
> +#endif
> +
> +/**
> + * thermal_zone_bind_cooling_device - bind a cooling device to a thermal
> zone
> + * @tz:		thermal zone device
> + * @trip:	indicates which trip point the cooling devices is
> + *		associated with in this thermal zone.
> + * @cdev:	thermal cooling device
> + *
> + * This function is usually called in the thermal zone device .bind callback.
> + */
> +int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> +				     int trip,
> +				     struct thermal_cooling_device *cdev,
> +				     unsigned long upper, unsigned long lower)
> +{
> +	struct thermal_instance *dev;
> +	struct thermal_instance *pos;
> +	struct thermal_zone_device *pos1;
> +	struct thermal_cooling_device *pos2;
> +	unsigned long max_state;
> +	int result;
> +
> +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> +		return -EINVAL;
> +
> +	list_for_each_entry(pos1, &thermal_tz_list, node) {
> +		if (pos1 == tz)
> +			break;
> +	}
> +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> +		if (pos2 == cdev)
> +			break;
> +	}
> +
> +	if (tz != pos1 || cdev != pos2)
> +		return -EINVAL;
> +
> +	cdev->ops->get_max_state(cdev, &max_state);
> +
> +	/* lower default 0, upper default max_state */
> +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> +
> +	if (lower > upper || upper > max_state)
> +		return -EINVAL;
> +
> +	dev =
> +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> +	if (!dev)
> +		return -ENOMEM;
> +	dev->tz = tz;
> +	dev->cdev = cdev;
> +	dev->trip = trip;
> +	dev->upper = upper;
> +	dev->lower = lower;
> +	dev->target = THERMAL_NO_TARGET;
> +
> +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> +	if (result)
> +		goto free_mem;
> +
> +	sprintf(dev->name, "cdev%d", dev->id);
> +	result =
> +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev-
> >name);
> +	if (result)
> +		goto release_idr;
> +
> +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> +	sysfs_attr_init(&dev->attr.attr);
> +	dev->attr.attr.name = dev->attr_name;
> +	dev->attr.attr.mode = 0444;
> +	dev->attr.show = thermal_cooling_device_trip_point_show;
> +	result = device_create_file(&tz->device, &dev->attr);
> +	if (result)
> +		goto remove_symbol_link;
> +
> +	mutex_lock(&tz->lock);
> +	mutex_lock(&cdev->lock);
> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> +		result = -EEXIST;
> +		break;
> +	}
> +	if (!result) {
> +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> +		list_add_tail(&dev->cdev_node, &cdev-
> >thermal_instances);
> +	}
> +	mutex_unlock(&cdev->lock);
> +	mutex_unlock(&tz->lock);
> +
> +	if (!result)
> +		return 0;
> +
> +	device_remove_file(&tz->device, &dev->attr);
> +remove_symbol_link:
> +	sysfs_remove_link(&tz->device.kobj, dev->name);
> +release_idr:
> +	release_idr(&tz->idr, &tz->lock, dev->id);
> +free_mem:
> +	kfree(dev);
> +	return result;
> +}
> +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> +
> +/**
> + * thermal_zone_unbind_cooling_device - unbind a cooling device from a
> thermal zone
> + * @tz:		thermal zone device
> + * @trip:	indicates which trip point the cooling devices is
> + *		associated with in this thermal zone.
> + * @cdev:	thermal cooling device
> + *
> + * This function is usually called in the thermal zone device .unbind callback.
> + */
> +int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> +				       int trip,
> +				       struct thermal_cooling_device *cdev)
> +{
> +	struct thermal_instance *pos, *next;
> +
> +	mutex_lock(&tz->lock);
> +	mutex_lock(&cdev->lock);
> +	list_for_each_entry_safe(pos, next, &tz->thermal_instances,
> tz_node) {
> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> +			list_del(&pos->tz_node);
> +			list_del(&pos->cdev_node);
> +			mutex_unlock(&cdev->lock);
> +			mutex_unlock(&tz->lock);
> +			goto unbind;
> +		}
> +	}
> +	mutex_unlock(&cdev->lock);
> +	mutex_unlock(&tz->lock);
> +
> +	return -ENODEV;
> +
> +unbind:
> +	device_remove_file(&tz->device, &pos->attr);
> +	sysfs_remove_link(&tz->device.kobj, pos->name);
> +	release_idr(&tz->idr, &tz->lock, pos->id);
> +	kfree(pos);
> +	return 0;
> +}
> +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> +
> +static void thermal_release(struct device *dev)
> +{
> +	struct thermal_zone_device *tz;
> +	struct thermal_cooling_device *cdev;
> +
> +	if (!strncmp(dev_name(dev), "thermal_zone",
> +		     sizeof("thermal_zone") - 1)) {
> +		tz = to_thermal_zone(dev);
> +		kfree(tz);
> +	} else {
> +		cdev = to_cooling_device(dev);
> +		kfree(cdev);
> +	}
> +}
> +
> +static struct class thermal_class = {
> +	.name = "thermal",
> +	.dev_release = thermal_release,
> +};
> +
> +/**
> + * thermal_cooling_device_register - register a new thermal cooling device
> + * @type:	the thermal cooling device type.
> + * @devdata:	device private data.
> + * @ops:		standard thermal cooling devices callbacks.
> + */
> +struct thermal_cooling_device *
> +thermal_cooling_device_register(char *type, void *devdata,
> +				const struct thermal_cooling_device_ops
> *ops)
> +{
> +	struct thermal_cooling_device *cdev;
> +	int result;
> +
> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> +	    !ops->set_cur_state)
> +		return ERR_PTR(-EINVAL);
> +
> +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> +	if (!cdev)
> +		return ERR_PTR(-ENOMEM);
> +
> +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> +	if (result) {
> +		kfree(cdev);
> +		return ERR_PTR(result);
> +	}
> +
> +	strcpy(cdev->type, type ? : "");
> +	mutex_init(&cdev->lock);
> +	INIT_LIST_HEAD(&cdev->thermal_instances);
> +	cdev->ops = ops;
> +	cdev->updated = true;
> +	cdev->device.class = &thermal_class;
> +	cdev->devdata = devdata;
> +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> +	result = device_register(&cdev->device);
> +	if (result) {
> +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev-
> >id);
> +		kfree(cdev);
> +		return ERR_PTR(result);
> +	}
> +
> +	/* sys I/F */
> +	if (type) {
> +		result = device_create_file(&cdev->device,
> &dev_attr_cdev_type);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +	result = device_create_file(&cdev->device, &dev_attr_max_state);
> +	if (result)
> +		goto unregister;
> +
> +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> +	if (result)
> +		goto unregister;
> +
> +	/* Add 'this' new cdev to the global cdev list */
> +	mutex_lock(&thermal_list_lock);
> +	list_add(&cdev->node, &thermal_cdev_list);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	/* Update binding information for 'this' new cdev */
> +	bind_cdev(cdev);
> +
> +	return cdev;
> +
> +unregister:
> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> +	device_unregister(&cdev->device);
> +	return ERR_PTR(result);
> +}
> +EXPORT_SYMBOL(thermal_cooling_device_register);
> +
> +/**
> + * thermal_cooling_device_unregister - removes the registered thermal
> cooling device
> + * @cdev:	the thermal cooling device to remove.
> + *
> + * thermal_cooling_device_unregister() must be called when the device is
> no
> + * longer needed.
> + */
> +void thermal_cooling_device_unregister(struct thermal_cooling_device
> *cdev)
> +{
> +	int i;
> +	const struct thermal_zone_params *tzp;
> +	struct thermal_zone_device *tz;
> +	struct thermal_cooling_device *pos = NULL;
> +
> +	if (!cdev)
> +		return;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(pos, &thermal_cdev_list, node)
> +	    if (pos == cdev)
> +		break;
> +	if (pos != cdev) {
> +		/* thermal cooling device not found */
> +		mutex_unlock(&thermal_list_lock);
> +		return;
> +	}
> +	list_del(&cdev->node);
> +
> +	/* Unbind all thermal zones associated with 'this' cdev */
> +	list_for_each_entry(tz, &thermal_tz_list, node) {
> +		if (tz->ops->unbind) {
> +			tz->ops->unbind(tz, cdev);
> +			continue;
> +		}
> +
> +		if (!tz->tzp || !tz->tzp->tbp)
> +			continue;
> +
> +		tzp = tz->tzp;
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev == cdev) {
> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> +				tzp->tbp[i].cdev = NULL;
> +			}
> +		}
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +
> +	if (cdev->type[0])
> +		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> +	device_remove_file(&cdev->device, &dev_attr_max_state);
> +	device_remove_file(&cdev->device, &dev_attr_cur_state);
> +
> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> +	device_unregister(&cdev->device);
> +	return;
> +}
> +EXPORT_SYMBOL(thermal_cooling_device_unregister);
> +
> +void thermal_cdev_update(struct thermal_cooling_device *cdev)
> +{
> +	struct thermal_instance *instance;
> +	unsigned long target = 0;
> +
> +	/* cooling device is updated*/
> +	if (cdev->updated)
> +		return;
> +
> +	mutex_lock(&cdev->lock);
> +	/* Make sure cdev enters the deepest cooling state */
> +	list_for_each_entry(instance, &cdev->thermal_instances,
> cdev_node) {
> +		if (instance->target == THERMAL_NO_TARGET)
> +			continue;
> +		if (instance->target > target)
> +			target = instance->target;
> +	}
> +	mutex_unlock(&cdev->lock);
> +	cdev->ops->set_cur_state(cdev, target);
> +	cdev->updated = true;
> +}
> +EXPORT_SYMBOL(thermal_cdev_update);
> +
> +/**
> + * notify_thermal_framework - Sensor drivers use this API to notify
> framework
> + * @tz:		thermal zone device
> + * @trip:	indicates which trip point has been crossed
> + *
> + * This function handles the trip events from sensor drivers. It starts
> + * throttling the cooling devices according to the policy configured.
> + * For CRITICAL and HOT trip points, this notifies the respective drivers,
> + * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> + * The throttling policy is based on the configured platform data; if no
> + * platform data is provided, this uses the step_wise throttling policy.
> + */
> +void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> +{
> +	handle_thermal_trip(tz, trip);
> +}
> +EXPORT_SYMBOL(notify_thermal_framework);
> +
> +/**
> + * create_trip_attrs - create attributes for trip points
> + * @tz:		the thermal zone device
> + * @mask:	Writeable trip point bitmap.
> + */
> +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> +{
> +	int indx;
> +	int size = sizeof(struct thermal_attr) * tz->trips;
> +
> +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> +	if (!tz->trip_type_attrs)
> +		return -ENOMEM;
> +
> +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> +	if (!tz->trip_temp_attrs) {
> +		kfree(tz->trip_type_attrs);
> +		return -ENOMEM;
> +	}
> +
> +	if (tz->ops->get_trip_hyst) {
> +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> +		if (!tz->trip_hyst_attrs) {
> +			kfree(tz->trip_type_attrs);
> +			kfree(tz->trip_temp_attrs);
> +			return -ENOMEM;
> +		}
> +	}
> +
> +
> +	for (indx = 0; indx < tz->trips; indx++) {
> +		/* create trip type attribute */
> +		snprintf(tz->trip_type_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> +			 "trip_point_%d_type", indx);
> +
> +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> +		tz->trip_type_attrs[indx].attr.attr.name =
> +						tz-
> >trip_type_attrs[indx].name;
> +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> +
> +		device_create_file(&tz->device,
> +				   &tz->trip_type_attrs[indx].attr);
> +
> +		/* create trip temp attribute */
> +		snprintf(tz->trip_temp_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> +			 "trip_point_%d_temp", indx);
> +
> +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> +		tz->trip_temp_attrs[indx].attr.attr.name =
> +						tz-
> >trip_temp_attrs[indx].name;
> +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> +		tz->trip_temp_attrs[indx].attr.show =
> trip_point_temp_show;
> +		if (mask & (1 << indx)) {
> +			tz->trip_temp_attrs[indx].attr.attr.mode |=
> S_IWUSR;
> +			tz->trip_temp_attrs[indx].attr.store =
> +
> 	trip_point_temp_store;
> +		}
> +
> +		device_create_file(&tz->device,
> +				   &tz->trip_temp_attrs[indx].attr);
> +
> +		/* create Optional trip hyst attribute */
> +		if (!tz->ops->get_trip_hyst)
> +			continue;
> +		snprintf(tz->trip_hyst_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> +			 "trip_point_%d_hyst", indx);
> +
> +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> +		tz->trip_hyst_attrs[indx].attr.attr.name =
> +					tz->trip_hyst_attrs[indx].name;
> +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> +		if (tz->ops->set_trip_hyst) {
> +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> +			tz->trip_hyst_attrs[indx].attr.store =
> +					trip_point_hyst_store;
> +		}
> +
> +		device_create_file(&tz->device,
> +				   &tz->trip_hyst_attrs[indx].attr);
> +	}
> +	return 0;
> +}
> +
> +static void remove_trip_attrs(struct thermal_zone_device *tz)
> +{
> +	int indx;
> +
> +	for (indx = 0; indx < tz->trips; indx++) {
> +		device_remove_file(&tz->device,
> +				   &tz->trip_type_attrs[indx].attr);
> +		device_remove_file(&tz->device,
> +				   &tz->trip_temp_attrs[indx].attr);
> +		if (tz->ops->get_trip_hyst)
> +			device_remove_file(&tz->device,
> +				  &tz->trip_hyst_attrs[indx].attr);
> +	}
> +	kfree(tz->trip_type_attrs);
> +	kfree(tz->trip_temp_attrs);
> +	kfree(tz->trip_hyst_attrs);
> +}
> +
> +/**
> + * thermal_zone_device_register - register a new thermal zone device
> + * @type:	the thermal zone device type
> + * @trips:	the number of trip points the thermal zone support
> + * @mask:	a bit string indicating the writeablility of trip points
> + * @devdata:	private device data
> + * @ops:	standard thermal zone device callbacks
> + * @tzp:	thermal zone platform parameters
> + * @passive_delay: number of milliseconds to wait between polls when
> + *		   performing passive cooling
> + * @polling_delay: number of milliseconds to wait between polls when
> checking
> + *		   whether trip points have been crossed (0 for interrupt
> + *		   driven systems)
> + *
> + * thermal_zone_device_unregister() must be called when the device is no
> + * longer needed. The passive cooling depends on the .get_trend() return
> value.
> + */
> +struct thermal_zone_device *thermal_zone_device_register(const char
> *type,
> +	int trips, int mask, void *devdata,
> +	const struct thermal_zone_device_ops *ops,
> +	const struct thermal_zone_params *tzp,
> +	int passive_delay, int polling_delay)
> +{
> +	struct thermal_zone_device *tz;
> +	enum thermal_trip_type trip_type;
> +	int result;
> +	int count;
> +	int passive = 0;
> +
> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (!ops || !ops->get_temp)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (trips > 0 && !ops->get_trip_type)
> +		return ERR_PTR(-EINVAL);
> +
> +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> +	if (!tz)
> +		return ERR_PTR(-ENOMEM);
> +
> +	INIT_LIST_HEAD(&tz->thermal_instances);
> +	idr_init(&tz->idr);
> +	mutex_init(&tz->lock);
> +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> +	if (result) {
> +		kfree(tz);
> +		return ERR_PTR(result);
> +	}
> +
> +	strcpy(tz->type, type ? : "");
> +	tz->ops = ops;
> +	tz->tzp = tzp;
> +	tz->device.class = &thermal_class;
> +	tz->devdata = devdata;
> +	tz->trips = trips;
> +	tz->passive_delay = passive_delay;
> +	tz->polling_delay = polling_delay;
> +
> +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> +	result = device_register(&tz->device);
> +	if (result) {
> +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> +		kfree(tz);
> +		return ERR_PTR(result);
> +	}
> +
> +	/* sys I/F */
> +	if (type) {
> +		result = device_create_file(&tz->device, &dev_attr_type);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +	result = device_create_file(&tz->device, &dev_attr_temp);
> +	if (result)
> +		goto unregister;
> +
> +	if (ops->get_mode) {
> +		result = device_create_file(&tz->device, &dev_attr_mode);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +	result = create_trip_attrs(tz, mask);
> +	if (result)
> +		goto unregister;
> +
> +	for (count = 0; count < trips; count++) {
> +		tz->ops->get_trip_type(tz, count, &trip_type);
> +		if (trip_type == THERMAL_TRIP_PASSIVE)
> +			passive = 1;
> +	}
> +
> +	if (!passive) {
> +		result = device_create_file(&tz->device, &dev_attr_passive);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +#ifdef CONFIG_THERMAL_EMULATION
> +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> +	if (result)
> +		goto unregister;
> +#endif
> +	/* Create policy attribute */
> +	result = device_create_file(&tz->device, &dev_attr_policy);
> +	if (result)
> +		goto unregister;
> +
> +	/* Update 'this' zone's governor information */
> +	mutex_lock(&thermal_governor_lock);
> +
> +	if (tz->tzp)
> +		tz->governor = __find_governor(tz->tzp->governor_name);
> +	else
> +		tz->governor =
> __find_governor(DEFAULT_THERMAL_GOVERNOR);
> +
> +	mutex_unlock(&thermal_governor_lock);
> +
> +	result = thermal_add_hwmon_sysfs(tz);
> +	if (result)
> +		goto unregister;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_add_tail(&tz->node, &thermal_tz_list);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	/* Bind cooling devices for this zone */
> +	bind_tz(tz);
> +
> +	INIT_DELAYED_WORK(&(tz->poll_queue),
> thermal_zone_device_check);
> +
> +	thermal_zone_device_update(tz);
> +
> +	if (!result)
> +		return tz;
> +
> +unregister:
> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> +	device_unregister(&tz->device);
> +	return ERR_PTR(result);
> +}
> +EXPORT_SYMBOL(thermal_zone_device_register);
> +
> +/**
> + * thermal_device_unregister - removes the registered thermal zone
> device
> + * @tz: the thermal zone device to remove
> + */
> +void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> +{
> +	int i;
> +	const struct thermal_zone_params *tzp;
> +	struct thermal_cooling_device *cdev;
> +	struct thermal_zone_device *pos = NULL;
> +
> +	if (!tz)
> +		return;
> +
> +	tzp = tz->tzp;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(pos, &thermal_tz_list, node)
> +	    if (pos == tz)
> +		break;
> +	if (pos != tz) {
> +		/* thermal zone device not found */
> +		mutex_unlock(&thermal_list_lock);
> +		return;
> +	}
> +	list_del(&tz->node);
> +
> +	/* Unbind all cdevs associated with 'this' thermal zone */
> +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> +		if (tz->ops->unbind) {
> +			tz->ops->unbind(tz, cdev);
> +			continue;
> +		}
> +
> +		if (!tzp || !tzp->tbp)
> +			break;
> +
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev == cdev) {
> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> +				tzp->tbp[i].cdev = NULL;
> +			}
> +		}
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +
> +	thermal_zone_device_set_polling(tz, 0);
> +
> +	if (tz->type[0])
> +		device_remove_file(&tz->device, &dev_attr_type);
> +	device_remove_file(&tz->device, &dev_attr_temp);
> +	if (tz->ops->get_mode)
> +		device_remove_file(&tz->device, &dev_attr_mode);
> +	device_remove_file(&tz->device, &dev_attr_policy);
> +	remove_trip_attrs(tz);
> +	tz->governor = NULL;
> +
> +	thermal_remove_hwmon_sysfs(tz);
> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> +	idr_destroy(&tz->idr);
> +	mutex_destroy(&tz->lock);
> +	device_unregister(&tz->device);
> +	return;
> +}
> +EXPORT_SYMBOL(thermal_zone_device_unregister);
> +
> +#ifdef CONFIG_NET
> +static struct genl_family thermal_event_genl_family = {
> +	.id = GENL_ID_GENERATE,
> +	.name = THERMAL_GENL_FAMILY_NAME,
> +	.version = THERMAL_GENL_VERSION,
> +	.maxattr = THERMAL_GENL_ATTR_MAX,
> +};
> +
> +static struct genl_multicast_group thermal_event_mcgrp = {
> +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> +};
> +
> +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> +					enum events event)
> +{
> +	struct sk_buff *skb;
> +	struct nlattr *attr;
> +	struct thermal_genl_event *thermal_event;
> +	void *msg_header;
> +	int size;
> +	int result;
> +	static unsigned int thermal_event_seqnum;
> +
> +	if (!tz)
> +		return -EINVAL;
> +
> +	/* allocate memory */
> +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> +	       nla_total_size(0);
> +
> +	skb = genlmsg_new(size, GFP_ATOMIC);
> +	if (!skb)
> +		return -ENOMEM;
> +
> +	/* add the genetlink message header */
> +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> +				 &thermal_event_genl_family, 0,
> +				 THERMAL_GENL_CMD_EVENT);
> +	if (!msg_header) {
> +		nlmsg_free(skb);
> +		return -ENOMEM;
> +	}
> +
> +	/* fill the data */
> +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> +			   sizeof(struct thermal_genl_event));
> +
> +	if (!attr) {
> +		nlmsg_free(skb);
> +		return -EINVAL;
> +	}
> +
> +	thermal_event = nla_data(attr);
> +	if (!thermal_event) {
> +		nlmsg_free(skb);
> +		return -EINVAL;
> +	}
> +
> +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> +
> +	thermal_event->orig = tz->id;
> +	thermal_event->event = event;
> +
> +	/* send multicast genetlink message */
> +	result = genlmsg_end(skb, msg_header);
> +	if (result < 0) {
> +		nlmsg_free(skb);
> +		return result;
> +	}
> +
> +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id,
> GFP_ATOMIC);
> +	if (result)
> +		dev_err(&tz->device, "Failed to send netlink event:%d",
> result);
> +
> +	return result;
> +}
> +EXPORT_SYMBOL(thermal_generate_netlink_event);
> +
> +static int genetlink_init(void)
> +{
> +	int result;
> +
> +	result = genl_register_family(&thermal_event_genl_family);
> +	if (result)
> +		return result;
> +
> +	result = genl_register_mc_group(&thermal_event_genl_family,
> +					&thermal_event_mcgrp);
> +	if (result)
> +		genl_unregister_family(&thermal_event_genl_family);
> +	return result;
> +}
> +
> +static void genetlink_exit(void)
> +{
> +	genl_unregister_family(&thermal_event_genl_family);
> +}
> +#else /* !CONFIG_NET */
> +static inline int genetlink_init(void) { return 0; }
> +static inline void genetlink_exit(void) {}
> +#endif /* !CONFIG_NET */
> +
> +static int __init thermal_init(void)
> +{
> +	int result = 0;
> +
> +	result = class_register(&thermal_class);
> +	if (result) {
> +		idr_destroy(&thermal_tz_idr);
> +		idr_destroy(&thermal_cdev_idr);
> +		mutex_destroy(&thermal_idr_lock);
> +		mutex_destroy(&thermal_list_lock);
> +		return result;
> +	}
> +	result = genetlink_init();
> +	return result;
> +}
> +
> +static void __exit thermal_exit(void)
> +{
> +	class_unregister(&thermal_class);
> +	idr_destroy(&thermal_tz_idr);
> +	idr_destroy(&thermal_cdev_idr);
> +	mutex_destroy(&thermal_idr_lock);
> +	mutex_destroy(&thermal_list_lock);
> +	genetlink_exit();
> +}
> +
> +fs_initcall(thermal_init);
> +module_exit(thermal_exit);
> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
> deleted file mode 100644
> index 5b7863a..0000000
> --- a/drivers/thermal/thermal_sys.c
> +++ /dev/null
> @@ -1,1888 +0,0 @@
> -/*
> - *  thermal.c - Generic Thermal Management Sysfs support.
> - *
> - *  Copyright (C) 2008 Intel Corp
> - *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> - *
> - *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> - *
> - *  This program is free software; you can redistribute it and/or modify
> - *  it under the terms of the GNU General Public License as published by
> - *  the Free Software Foundation; version 2 of the License.
> - *
> - *  This program is distributed in the hope that it will be useful, but
> - *  WITHOUT ANY WARRANTY; without even the implied warranty of
> - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> GNU
> - *  General Public License for more details.
> - *
> - *  You should have received a copy of the GNU General Public License along
> - *  with this program; if not, write to the Free Software Foundation, Inc.,
> - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> - *
> - *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> - */
> -
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
> -#include <linux/device.h>
> -#include <linux/err.h>
> -#include <linux/slab.h>
> -#include <linux/kdev_t.h>
> -#include <linux/idr.h>
> -#include <linux/thermal.h>
> -#include <linux/reboot.h>
> -#include <net/netlink.h>
> -#include <net/genetlink.h>
> -
> -#include "thermal_core.h"
> -
> -MODULE_AUTHOR("Zhang Rui");
> -MODULE_DESCRIPTION("Generic thermal management sysfs support");
> -MODULE_LICENSE("GPL");
> -
> -static DEFINE_IDR(thermal_tz_idr);
> -static DEFINE_IDR(thermal_cdev_idr);
> -static DEFINE_MUTEX(thermal_idr_lock);
> -
> -static LIST_HEAD(thermal_tz_list);
> -static LIST_HEAD(thermal_cdev_list);
> -static LIST_HEAD(thermal_governor_list);
> -
> -static DEFINE_MUTEX(thermal_list_lock);
> -static DEFINE_MUTEX(thermal_governor_lock);
> -
> -static struct thermal_governor *__find_governor(const char *name)
> -{
> -	struct thermal_governor *pos;
> -
> -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> -			return pos;
> -
> -	return NULL;
> -}
> -
> -int thermal_register_governor(struct thermal_governor *governor)
> -{
> -	int err;
> -	const char *name;
> -	struct thermal_zone_device *pos;
> -
> -	if (!governor)
> -		return -EINVAL;
> -
> -	mutex_lock(&thermal_governor_lock);
> -
> -	err = -EBUSY;
> -	if (__find_governor(governor->name) == NULL) {
> -		err = 0;
> -		list_add(&governor->governor_list,
> &thermal_governor_list);
> -	}
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> -		if (pos->governor)
> -			continue;
> -		if (pos->tzp)
> -			name = pos->tzp->governor_name;
> -		else
> -			name = DEFAULT_THERMAL_GOVERNOR;
> -		if (!strnicmp(name, governor->name,
> THERMAL_NAME_LENGTH))
> -			pos->governor = governor;
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -	mutex_unlock(&thermal_governor_lock);
> -
> -	return err;
> -}
> -EXPORT_SYMBOL_GPL(thermal_register_governor);
> -
> -void thermal_unregister_governor(struct thermal_governor *governor)
> -{
> -	struct thermal_zone_device *pos;
> -
> -	if (!governor)
> -		return;
> -
> -	mutex_lock(&thermal_governor_lock);
> -
> -	if (__find_governor(governor->name) == NULL)
> -		goto exit;
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> -		if (!strnicmp(pos->governor->name, governor->name,
> -						THERMAL_NAME_LENGTH))
> -			pos->governor = NULL;
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -	list_del(&governor->governor_list);
> -exit:
> -	mutex_unlock(&thermal_governor_lock);
> -	return;
> -}
> -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> -
> -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> -{
> -	int ret;
> -
> -	if (lock)
> -		mutex_lock(lock);
> -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> -	if (lock)
> -		mutex_unlock(lock);
> -	if (unlikely(ret < 0))
> -		return ret;
> -	*id = ret;
> -	return 0;
> -}
> -
> -static void release_idr(struct idr *idr, struct mutex *lock, int id)
> -{
> -	if (lock)
> -		mutex_lock(lock);
> -	idr_remove(idr, id);
> -	if (lock)
> -		mutex_unlock(lock);
> -}
> -
> -int get_tz_trend(struct thermal_zone_device *tz, int trip)
> -{
> -	enum thermal_trend trend;
> -
> -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> -		if (tz->temperature > tz->last_temperature)
> -			trend = THERMAL_TREND_RAISING;
> -		else if (tz->temperature < tz->last_temperature)
> -			trend = THERMAL_TREND_DROPPING;
> -		else
> -			trend = THERMAL_TREND_STABLE;
> -	}
> -
> -	return trend;
> -}
> -EXPORT_SYMBOL(get_tz_trend);
> -
> -struct thermal_instance *get_thermal_instance(struct
> thermal_zone_device *tz,
> -			struct thermal_cooling_device *cdev, int trip)
> -{
> -	struct thermal_instance *pos = NULL;
> -	struct thermal_instance *target_instance = NULL;
> -
> -	mutex_lock(&tz->lock);
> -	mutex_lock(&cdev->lock);
> -
> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> -			target_instance = pos;
> -			break;
> -		}
> -	}
> -
> -	mutex_unlock(&cdev->lock);
> -	mutex_unlock(&tz->lock);
> -
> -	return target_instance;
> -}
> -EXPORT_SYMBOL(get_thermal_instance);
> -
> -static void print_bind_err_msg(struct thermal_zone_device *tz,
> -			struct thermal_cooling_device *cdev, int ret)
> -{
> -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> -				tz->type, cdev->type, ret);
> -}
> -
> -static void __bind(struct thermal_zone_device *tz, int mask,
> -			struct thermal_cooling_device *cdev)
> -{
> -	int i, ret;
> -
> -	for (i = 0; i < tz->trips; i++) {
> -		if (mask & (1 << i)) {
> -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> -					THERMAL_NO_LIMIT,
> THERMAL_NO_LIMIT);
> -			if (ret)
> -				print_bind_err_msg(tz, cdev, ret);
> -		}
> -	}
> -}
> -
> -static void __unbind(struct thermal_zone_device *tz, int mask,
> -			struct thermal_cooling_device *cdev)
> -{
> -	int i;
> -
> -	for (i = 0; i < tz->trips; i++)
> -		if (mask & (1 << i))
> -			thermal_zone_unbind_cooling_device(tz, i, cdev);
> -}
> -
> -static void bind_cdev(struct thermal_cooling_device *cdev)
> -{
> -	int i, ret;
> -	const struct thermal_zone_params *tzp;
> -	struct thermal_zone_device *pos = NULL;
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> -		if (!pos->tzp && !pos->ops->bind)
> -			continue;
> -
> -		if (!pos->tzp && pos->ops->bind) {
> -			ret = pos->ops->bind(pos, cdev);
> -			if (ret)
> -				print_bind_err_msg(pos, cdev, ret);
> -		}
> -
> -		tzp = pos->tzp;
> -		if (!tzp || !tzp->tbp)
> -			continue;
> -
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> -				continue;
> -			if (tzp->tbp[i].match(pos, cdev))
> -				continue;
> -			tzp->tbp[i].cdev = cdev;
> -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> -		}
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -}
> -
> -static void bind_tz(struct thermal_zone_device *tz)
> -{
> -	int i, ret;
> -	struct thermal_cooling_device *pos = NULL;
> -	const struct thermal_zone_params *tzp = tz->tzp;
> -
> -	if (!tzp && !tz->ops->bind)
> -		return;
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	/* If there is no platform data, try to use ops->bind */
> -	if (!tzp && tz->ops->bind) {
> -		list_for_each_entry(pos, &thermal_cdev_list, node) {
> -			ret = tz->ops->bind(tz, pos);
> -			if (ret)
> -				print_bind_err_msg(tz, pos, ret);
> -		}
> -		goto exit;
> -	}
> -
> -	if (!tzp || !tzp->tbp)
> -		goto exit;
> -
> -	list_for_each_entry(pos, &thermal_cdev_list, node) {
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> -				continue;
> -			if (tzp->tbp[i].match(tz, pos))
> -				continue;
> -			tzp->tbp[i].cdev = pos;
> -			__bind(tz, tzp->tbp[i].trip_mask, pos);
> -		}
> -	}
> -exit:
> -	mutex_unlock(&thermal_list_lock);
> -}
> -
> -static void thermal_zone_device_set_polling(struct thermal_zone_device
> *tz,
> -					    int delay)
> -{
> -	if (delay > 1000)
> -		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> -				 round_jiffies(msecs_to_jiffies(delay)));
> -	else if (delay)
> -		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> -				 msecs_to_jiffies(delay));
> -	else
> -		cancel_delayed_work(&tz->poll_queue);
> -}
> -
> -static void monitor_thermal_zone(struct thermal_zone_device *tz)
> -{
> -	mutex_lock(&tz->lock);
> -
> -	if (tz->passive)
> -		thermal_zone_device_set_polling(tz, tz->passive_delay);
> -	else if (tz->polling_delay)
> -		thermal_zone_device_set_polling(tz, tz->polling_delay);
> -	else
> -		thermal_zone_device_set_polling(tz, 0);
> -
> -	mutex_unlock(&tz->lock);
> -}
> -
> -static void handle_non_critical_trips(struct thermal_zone_device *tz,
> -			int trip, enum thermal_trip_type trip_type)
> -{
> -	if (tz->governor)
> -		tz->governor->throttle(tz, trip);
> -}
> -
> -static void handle_critical_trips(struct thermal_zone_device *tz,
> -				int trip, enum thermal_trip_type trip_type)
> -{
> -	long trip_temp;
> -
> -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> -
> -	/* If we have not crossed the trip_temp, we do not care. */
> -	if (tz->temperature < trip_temp)
> -		return;
> -
> -	if (tz->ops->notify)
> -		tz->ops->notify(tz, trip, trip_type);
> -
> -	if (trip_type == THERMAL_TRIP_CRITICAL) {
> -		dev_emerg(&tz->device,
> -			  "critical temperature reached(%d C),shutting
> down\n",
> -			  tz->temperature / 1000);
> -		orderly_poweroff(true);
> -	}
> -}
> -
> -static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> -{
> -	enum thermal_trip_type type;
> -
> -	tz->ops->get_trip_type(tz, trip, &type);
> -
> -	if (type == THERMAL_TRIP_CRITICAL || type ==
> THERMAL_TRIP_HOT)
> -		handle_critical_trips(tz, trip, type);
> -	else
> -		handle_non_critical_trips(tz, trip, type);
> -	/*
> -	 * Alright, we handled this trip successfully.
> -	 * So, start monitoring again.
> -	 */
> -	monitor_thermal_zone(tz);
> -}
> -
> -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> -				unsigned long *temp)
> -{
> -	int ret = 0;
> -#ifdef CONFIG_THERMAL_EMULATION
> -	int count;
> -	unsigned long crit_temp = -1UL;
> -	enum thermal_trip_type type;
> -#endif
> -
> -	mutex_lock(&tz->lock);
> -
> -	ret = tz->ops->get_temp(tz, temp);
> -#ifdef CONFIG_THERMAL_EMULATION
> -	if (!tz->emul_temperature)
> -		goto skip_emul;
> -
> -	for (count = 0; count < tz->trips; count++) {
> -		ret = tz->ops->get_trip_type(tz, count, &type);
> -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> -			break;
> -		}
> -	}
> -
> -	if (ret)
> -		goto skip_emul;
> -
> -	if (*temp < crit_temp)
> -		*temp = tz->emul_temperature;
> -skip_emul:
> -#endif
> -	mutex_unlock(&tz->lock);
> -	return ret;
> -}
> -
> -static void update_temperature(struct thermal_zone_device *tz)
> -{
> -	long temp;
> -	int ret;
> -
> -	ret = thermal_zone_get_temp(tz, &temp);
> -	if (ret) {
> -		dev_warn(&tz->device, "failed to read out thermal zone
> %d\n",
> -			 tz->id);
> -		return;
> -	}
> -
> -	mutex_lock(&tz->lock);
> -	tz->last_temperature = tz->temperature;
> -	tz->temperature = temp;
> -	mutex_unlock(&tz->lock);
> -}
> -
> -void thermal_zone_device_update(struct thermal_zone_device *tz)
> -{
> -	int count;
> -
> -	update_temperature(tz);
> -
> -	for (count = 0; count < tz->trips; count++)
> -		handle_thermal_trip(tz, count);
> -}
> -EXPORT_SYMBOL(thermal_zone_device_update);
> -
> -static void thermal_zone_device_check(struct work_struct *work)
> -{
> -	struct thermal_zone_device *tz = container_of(work, struct
> -						      thermal_zone_device,
> -						      poll_queue.work);
> -	thermal_zone_device_update(tz);
> -}
> -
> -/* sys I/F for thermal zone */
> -
> -#define to_thermal_zone(_dev) \
> -	container_of(_dev, struct thermal_zone_device, device)
> -
> -static ssize_t
> -type_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -
> -	return sprintf(buf, "%s\n", tz->type);
> -}
> -
> -static ssize_t
> -temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	long temperature;
> -	int ret;
> -
> -	ret = thermal_zone_get_temp(tz, &temperature);
> -
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	enum thermal_device_mode mode;
> -	int result;
> -
> -	if (!tz->ops->get_mode)
> -		return -EPERM;
> -
> -	result = tz->ops->get_mode(tz, &mode);
> -	if (result)
> -		return result;
> -
> -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ?
> "enabled"
> -		       : "disabled");
> -}
> -
> -static ssize_t
> -mode_store(struct device *dev, struct device_attribute *attr,
> -	   const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int result;
> -
> -	if (!tz->ops->set_mode)
> -		return -EPERM;
> -
> -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> -		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_ENABLED);
> -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> -		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_DISABLED);
> -	else
> -		result = -EINVAL;
> -
> -	if (result)
> -		return result;
> -
> -	return count;
> -}
> -
> -static ssize_t
> -trip_point_type_show(struct device *dev, struct device_attribute *attr,
> -		     char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	enum thermal_trip_type type;
> -	int trip, result;
> -
> -	if (!tz->ops->get_trip_type)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> -		return -EINVAL;
> -
> -	result = tz->ops->get_trip_type(tz, trip, &type);
> -	if (result)
> -		return result;
> -
> -	switch (type) {
> -	case THERMAL_TRIP_CRITICAL:
> -		return sprintf(buf, "critical\n");
> -	case THERMAL_TRIP_HOT:
> -		return sprintf(buf, "hot\n");
> -	case THERMAL_TRIP_PASSIVE:
> -		return sprintf(buf, "passive\n");
> -	case THERMAL_TRIP_ACTIVE:
> -		return sprintf(buf, "active\n");
> -	default:
> -		return sprintf(buf, "unknown\n");
> -	}
> -}
> -
> -static ssize_t
> -trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> -		     const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	unsigned long temperature;
> -
> -	if (!tz->ops->set_trip_temp)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> -		return -EINVAL;
> -
> -	if (kstrtoul(buf, 10, &temperature))
> -		return -EINVAL;
> -
> -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> -
> -	return ret ? ret : count;
> -}
> -
> -static ssize_t
> -trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> -		     char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	long temperature;
> -
> -	if (!tz->ops->get_trip_temp)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> -		return -EINVAL;
> -
> -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> -
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> -			const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	unsigned long temperature;
> -
> -	if (!tz->ops->set_trip_hyst)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> -		return -EINVAL;
> -
> -	if (kstrtoul(buf, 10, &temperature))
> -		return -EINVAL;
> -
> -	/*
> -	 * We are not doing any check on the 'temperature' value
> -	 * here. The driver implementing 'set_trip_hyst' has to
> -	 * take care of this.
> -	 */
> -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> -
> -	return ret ? ret : count;
> -}
> -
> -static ssize_t
> -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> -			char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	unsigned long temperature;
> -
> -	if (!tz->ops->get_trip_hyst)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> -		return -EINVAL;
> -
> -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> -
> -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -passive_store(struct device *dev, struct device_attribute *attr,
> -		    const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	struct thermal_cooling_device *cdev = NULL;
> -	int state;
> -
> -	if (!sscanf(buf, "%d\n", &state))
> -		return -EINVAL;
> -
> -	/* sanity check: values below 1000 millicelcius don't make sense
> -	 * and can cause the system to go into a thermal heart attack
> -	 */
> -	if (state && state < 1000)
> -		return -EINVAL;
> -
> -	if (state && !tz->forced_passive) {
> -		mutex_lock(&thermal_list_lock);
> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> -			if (!strncmp("Processor", cdev->type,
> -				     sizeof("Processor")))
> -				thermal_zone_bind_cooling_device(tz,
> -						THERMAL_TRIPS_NONE,
> cdev,
> -						THERMAL_NO_LIMIT,
> -						THERMAL_NO_LIMIT);
> -		}
> -		mutex_unlock(&thermal_list_lock);
> -		if (!tz->passive_delay)
> -			tz->passive_delay = 1000;
> -	} else if (!state && tz->forced_passive) {
> -		mutex_lock(&thermal_list_lock);
> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> -			if (!strncmp("Processor", cdev->type,
> -				     sizeof("Processor")))
> -				thermal_zone_unbind_cooling_device(tz,
> -
> THERMAL_TRIPS_NONE,
> -								   cdev);
> -		}
> -		mutex_unlock(&thermal_list_lock);
> -		tz->passive_delay = 0;
> -	}
> -
> -	tz->forced_passive = state;
> -
> -	thermal_zone_device_update(tz);
> -
> -	return count;
> -}
> -
> -static ssize_t
> -passive_show(struct device *dev, struct device_attribute *attr,
> -		   char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -
> -	return sprintf(buf, "%d\n", tz->forced_passive);
> -}
> -
> -static ssize_t
> -policy_store(struct device *dev, struct device_attribute *attr,
> -		    const char *buf, size_t count)
> -{
> -	int ret = -EINVAL;
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	struct thermal_governor *gov;
> -
> -	mutex_lock(&thermal_governor_lock);
> -
> -	gov = __find_governor(buf);
> -	if (!gov)
> -		goto exit;
> -
> -	tz->governor = gov;
> -	ret = count;
> -
> -exit:
> -	mutex_unlock(&thermal_governor_lock);
> -	return ret;
> -}
> -
> -static ssize_t
> -policy_show(struct device *dev, struct device_attribute *devattr, char
> *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -
> -	return sprintf(buf, "%s\n", tz->governor->name);
> -}
> -
> -#ifdef CONFIG_THERMAL_EMULATION
> -static ssize_t
> -emul_temp_store(struct device *dev, struct device_attribute *attr,
> -		     const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int ret = 0;
> -	unsigned long temperature;
> -
> -	if (kstrtoul(buf, 10, &temperature))
> -		return -EINVAL;
> -
> -	if (!tz->ops->set_emul_temp) {
> -		mutex_lock(&tz->lock);
> -		tz->emul_temperature = temperature;
> -		mutex_unlock(&tz->lock);
> -	} else {
> -		ret = tz->ops->set_emul_temp(tz, temperature);
> -	}
> -
> -	return ret ? ret : count;
> -}
> -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> -#endif/*CONFIG_THERMAL_EMULATION*/
> -
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> passive_store);
> -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> policy_store);
> -
> -/* sys I/F for cooling device */
> -#define to_cooling_device(_dev)	\
> -	container_of(_dev, struct thermal_cooling_device, device)
> -
> -static ssize_t
> -thermal_cooling_device_type_show(struct device *dev,
> -				 struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -
> -	return sprintf(buf, "%s\n", cdev->type);
> -}
> -
> -static ssize_t
> -thermal_cooling_device_max_state_show(struct device *dev,
> -				      struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -	unsigned long state;
> -	int ret;
> -
> -	ret = cdev->ops->get_max_state(cdev, &state);
> -	if (ret)
> -		return ret;
> -	return sprintf(buf, "%ld\n", state);
> -}
> -
> -static ssize_t
> -thermal_cooling_device_cur_state_show(struct device *dev,
> -				      struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -	unsigned long state;
> -	int ret;
> -
> -	ret = cdev->ops->get_cur_state(cdev, &state);
> -	if (ret)
> -		return ret;
> -	return sprintf(buf, "%ld\n", state);
> -}
> -
> -static ssize_t
> -thermal_cooling_device_cur_state_store(struct device *dev,
> -				       struct device_attribute *attr,
> -				       const char *buf, size_t count)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -	unsigned long state;
> -	int result;
> -
> -	if (!sscanf(buf, "%ld\n", &state))
> -		return -EINVAL;
> -
> -	if ((long)state < 0)
> -		return -EINVAL;
> -
> -	result = cdev->ops->set_cur_state(cdev, state);
> -	if (result)
> -		return result;
> -	return count;
> -}
> -
> -static struct device_attribute dev_attr_cdev_type =
> -__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> -static DEVICE_ATTR(max_state, 0444,
> -		   thermal_cooling_device_max_state_show, NULL);
> -static DEVICE_ATTR(cur_state, 0644,
> -		   thermal_cooling_device_cur_state_show,
> -		   thermal_cooling_device_cur_state_store);
> -
> -static ssize_t
> -thermal_cooling_device_trip_point_show(struct device *dev,
> -				       struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_instance *instance;
> -
> -	instance =
> -	    container_of(attr, struct thermal_instance, attr);
> -
> -	if (instance->trip == THERMAL_TRIPS_NONE)
> -		return sprintf(buf, "-1\n");
> -	else
> -		return sprintf(buf, "%d\n", instance->trip);
> -}
> -
> -/* Device management */
> -
> -#if defined(CONFIG_THERMAL_HWMON)
> -
> -/* hwmon sys I/F */
> -#include <linux/hwmon.h>
> -
> -/* thermal zone devices with the same type share one hwmon device */
> -struct thermal_hwmon_device {
> -	char type[THERMAL_NAME_LENGTH];
> -	struct device *device;
> -	int count;
> -	struct list_head tz_list;
> -	struct list_head node;
> -};
> -
> -struct thermal_hwmon_attr {
> -	struct device_attribute attr;
> -	char name[16];
> -};
> -
> -/* one temperature input for each thermal zone */
> -struct thermal_hwmon_temp {
> -	struct list_head hwmon_node;
> -	struct thermal_zone_device *tz;
> -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> -};
> -
> -static LIST_HEAD(thermal_hwmon_list);
> -
> -static ssize_t
> -name_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> -	return sprintf(buf, "%s\n", hwmon->type);
> -}
> -static DEVICE_ATTR(name, 0444, name_show, NULL);
> -
> -static ssize_t
> -temp_input_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> -{
> -	long temperature;
> -	int ret;
> -	struct thermal_hwmon_attr *hwmon_attr
> -			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> -	struct thermal_hwmon_temp *temp
> -			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> -				       temp_input);
> -	struct thermal_zone_device *tz = temp->tz;
> -
> -	ret = thermal_zone_get_temp(tz, &temperature);
> -
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -temp_crit_show(struct device *dev, struct device_attribute *attr,
> -		char *buf)
> -{
> -	struct thermal_hwmon_attr *hwmon_attr
> -			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> -	struct thermal_hwmon_temp *temp
> -			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> -				       temp_crit);
> -	struct thermal_zone_device *tz = temp->tz;
> -	long temperature;
> -	int ret;
> -
> -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -
> -static struct thermal_hwmon_device *
> -thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_device *hwmon;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> -		if (!strcmp(hwmon->type, tz->type)) {
> -			mutex_unlock(&thermal_list_lock);
> -			return hwmon;
> -		}
> -	mutex_unlock(&thermal_list_lock);
> -
> -	return NULL;
> -}
> -
> -/* Find the temperature input matching a given thermal zone */
> -static struct thermal_hwmon_temp *
> -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device
> *hwmon,
> -			  const struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_temp *temp;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> -		if (temp->tz == tz) {
> -			mutex_unlock(&thermal_list_lock);
> -			return temp;
> -		}
> -	mutex_unlock(&thermal_list_lock);
> -
> -	return NULL;
> -}
> -
> -static int
> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_device *hwmon;
> -	struct thermal_hwmon_temp *temp;
> -	int new_hwmon_device = 1;
> -	int result;
> -
> -	hwmon = thermal_hwmon_lookup_by_type(tz);
> -	if (hwmon) {
> -		new_hwmon_device = 0;
> -		goto register_sys_interface;
> -	}
> -
> -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device),
> GFP_KERNEL);
> -	if (!hwmon)
> -		return -ENOMEM;
> -
> -	INIT_LIST_HEAD(&hwmon->tz_list);
> -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> -	hwmon->device = hwmon_device_register(NULL);
> -	if (IS_ERR(hwmon->device)) {
> -		result = PTR_ERR(hwmon->device);
> -		goto free_mem;
> -	}
> -	dev_set_drvdata(hwmon->device, hwmon);
> -	result = device_create_file(hwmon->device, &dev_attr_name);
> -	if (result)
> -		goto free_mem;
> -
> - register_sys_interface:
> -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> -	if (!temp) {
> -		result = -ENOMEM;
> -		goto unregister_name;
> -	}
> -
> -	temp->tz = tz;
> -	hwmon->count++;
> -
> -	snprintf(temp->temp_input.name, sizeof(temp-
> >temp_input.name),
> -		 "temp%d_input", hwmon->count);
> -	temp->temp_input.attr.attr.name = temp->temp_input.name;
> -	temp->temp_input.attr.attr.mode = 0444;
> -	temp->temp_input.attr.show = temp_input_show;
> -	sysfs_attr_init(&temp->temp_input.attr.attr);
> -	result = device_create_file(hwmon->device, &temp-
> >temp_input.attr);
> -	if (result)
> -		goto free_temp_mem;
> -
> -	if (tz->ops->get_crit_temp) {
> -		unsigned long temperature;
> -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> -			snprintf(temp->temp_crit.name,
> -				 sizeof(temp->temp_crit.name),
> -				"temp%d_crit", hwmon->count);
> -			temp->temp_crit.attr.attr.name = temp-
> >temp_crit.name;
> -			temp->temp_crit.attr.attr.mode = 0444;
> -			temp->temp_crit.attr.show = temp_crit_show;
> -			sysfs_attr_init(&temp->temp_crit.attr.attr);
> -			result = device_create_file(hwmon->device,
> -						    &temp->temp_crit.attr);
> -			if (result)
> -				goto unregister_input;
> -		}
> -	}
> -
> -	mutex_lock(&thermal_list_lock);
> -	if (new_hwmon_device)
> -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	return 0;
> -
> - unregister_input:
> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> - free_temp_mem:
> -	kfree(temp);
> - unregister_name:
> -	if (new_hwmon_device) {
> -		device_remove_file(hwmon->device, &dev_attr_name);
> -		hwmon_device_unregister(hwmon->device);
> -	}
> - free_mem:
> -	if (new_hwmon_device)
> -		kfree(hwmon);
> -
> -	return result;
> -}
> -
> -static void
> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_device *hwmon;
> -	struct thermal_hwmon_temp *temp;
> -
> -	hwmon = thermal_hwmon_lookup_by_type(tz);
> -	if (unlikely(!hwmon)) {
> -		/* Should never happen... */
> -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> -		return;
> -	}
> -
> -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> -	if (unlikely(!temp)) {
> -		/* Should never happen... */
> -		dev_dbg(&tz->device, "temperature input lookup
> failed!\n");
> -		return;
> -	}
> -
> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> -	if (tz->ops->get_crit_temp)
> -		device_remove_file(hwmon->device, &temp-
> >temp_crit.attr);
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_del(&temp->hwmon_node);
> -	kfree(temp);
> -	if (!list_empty(&hwmon->tz_list)) {
> -		mutex_unlock(&thermal_list_lock);
> -		return;
> -	}
> -	list_del(&hwmon->node);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	device_remove_file(hwmon->device, &dev_attr_name);
> -	hwmon_device_unregister(hwmon->device);
> -	kfree(hwmon);
> -}
> -#else
> -static int
> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -	return 0;
> -}
> -
> -static void
> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -}
> -#endif
> -
> -/**
> - * thermal_zone_bind_cooling_device - bind a cooling device to a thermal
> zone
> - * @tz:		thermal zone device
> - * @trip:	indicates which trip point the cooling devices is
> - *		associated with in this thermal zone.
> - * @cdev:	thermal cooling device
> - *
> - * This function is usually called in the thermal zone device .bind callback.
> - */
> -int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> -				     int trip,
> -				     struct thermal_cooling_device *cdev,
> -				     unsigned long upper, unsigned long lower)
> -{
> -	struct thermal_instance *dev;
> -	struct thermal_instance *pos;
> -	struct thermal_zone_device *pos1;
> -	struct thermal_cooling_device *pos2;
> -	unsigned long max_state;
> -	int result;
> -
> -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> -		return -EINVAL;
> -
> -	list_for_each_entry(pos1, &thermal_tz_list, node) {
> -		if (pos1 == tz)
> -			break;
> -	}
> -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> -		if (pos2 == cdev)
> -			break;
> -	}
> -
> -	if (tz != pos1 || cdev != pos2)
> -		return -EINVAL;
> -
> -	cdev->ops->get_max_state(cdev, &max_state);
> -
> -	/* lower default 0, upper default max_state */
> -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> -
> -	if (lower > upper || upper > max_state)
> -		return -EINVAL;
> -
> -	dev =
> -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> -	if (!dev)
> -		return -ENOMEM;
> -	dev->tz = tz;
> -	dev->cdev = cdev;
> -	dev->trip = trip;
> -	dev->upper = upper;
> -	dev->lower = lower;
> -	dev->target = THERMAL_NO_TARGET;
> -
> -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> -	if (result)
> -		goto free_mem;
> -
> -	sprintf(dev->name, "cdev%d", dev->id);
> -	result =
> -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev-
> >name);
> -	if (result)
> -		goto release_idr;
> -
> -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> -	sysfs_attr_init(&dev->attr.attr);
> -	dev->attr.attr.name = dev->attr_name;
> -	dev->attr.attr.mode = 0444;
> -	dev->attr.show = thermal_cooling_device_trip_point_show;
> -	result = device_create_file(&tz->device, &dev->attr);
> -	if (result)
> -		goto remove_symbol_link;
> -
> -	mutex_lock(&tz->lock);
> -	mutex_lock(&cdev->lock);
> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> -		result = -EEXIST;
> -		break;
> -	}
> -	if (!result) {
> -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> -		list_add_tail(&dev->cdev_node, &cdev-
> >thermal_instances);
> -	}
> -	mutex_unlock(&cdev->lock);
> -	mutex_unlock(&tz->lock);
> -
> -	if (!result)
> -		return 0;
> -
> -	device_remove_file(&tz->device, &dev->attr);
> -remove_symbol_link:
> -	sysfs_remove_link(&tz->device.kobj, dev->name);
> -release_idr:
> -	release_idr(&tz->idr, &tz->lock, dev->id);
> -free_mem:
> -	kfree(dev);
> -	return result;
> -}
> -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> -
> -/**
> - * thermal_zone_unbind_cooling_device - unbind a cooling device from a
> thermal zone
> - * @tz:		thermal zone device
> - * @trip:	indicates which trip point the cooling devices is
> - *		associated with in this thermal zone.
> - * @cdev:	thermal cooling device
> - *
> - * This function is usually called in the thermal zone device .unbind callback.
> - */
> -int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> -				       int trip,
> -				       struct thermal_cooling_device *cdev)
> -{
> -	struct thermal_instance *pos, *next;
> -
> -	mutex_lock(&tz->lock);
> -	mutex_lock(&cdev->lock);
> -	list_for_each_entry_safe(pos, next, &tz->thermal_instances,
> tz_node) {
> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> -			list_del(&pos->tz_node);
> -			list_del(&pos->cdev_node);
> -			mutex_unlock(&cdev->lock);
> -			mutex_unlock(&tz->lock);
> -			goto unbind;
> -		}
> -	}
> -	mutex_unlock(&cdev->lock);
> -	mutex_unlock(&tz->lock);
> -
> -	return -ENODEV;
> -
> -unbind:
> -	device_remove_file(&tz->device, &pos->attr);
> -	sysfs_remove_link(&tz->device.kobj, pos->name);
> -	release_idr(&tz->idr, &tz->lock, pos->id);
> -	kfree(pos);
> -	return 0;
> -}
> -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> -
> -static void thermal_release(struct device *dev)
> -{
> -	struct thermal_zone_device *tz;
> -	struct thermal_cooling_device *cdev;
> -
> -	if (!strncmp(dev_name(dev), "thermal_zone",
> -		     sizeof("thermal_zone") - 1)) {
> -		tz = to_thermal_zone(dev);
> -		kfree(tz);
> -	} else {
> -		cdev = to_cooling_device(dev);
> -		kfree(cdev);
> -	}
> -}
> -
> -static struct class thermal_class = {
> -	.name = "thermal",
> -	.dev_release = thermal_release,
> -};
> -
> -/**
> - * thermal_cooling_device_register - register a new thermal cooling device
> - * @type:	the thermal cooling device type.
> - * @devdata:	device private data.
> - * @ops:		standard thermal cooling devices callbacks.
> - */
> -struct thermal_cooling_device *
> -thermal_cooling_device_register(char *type, void *devdata,
> -				const struct thermal_cooling_device_ops
> *ops)
> -{
> -	struct thermal_cooling_device *cdev;
> -	int result;
> -
> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> -	    !ops->set_cur_state)
> -		return ERR_PTR(-EINVAL);
> -
> -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> -	if (!cdev)
> -		return ERR_PTR(-ENOMEM);
> -
> -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> -	if (result) {
> -		kfree(cdev);
> -		return ERR_PTR(result);
> -	}
> -
> -	strcpy(cdev->type, type ? : "");
> -	mutex_init(&cdev->lock);
> -	INIT_LIST_HEAD(&cdev->thermal_instances);
> -	cdev->ops = ops;
> -	cdev->updated = true;
> -	cdev->device.class = &thermal_class;
> -	cdev->devdata = devdata;
> -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> -	result = device_register(&cdev->device);
> -	if (result) {
> -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev-
> >id);
> -		kfree(cdev);
> -		return ERR_PTR(result);
> -	}
> -
> -	/* sys I/F */
> -	if (type) {
> -		result = device_create_file(&cdev->device,
> &dev_attr_cdev_type);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -	result = device_create_file(&cdev->device, &dev_attr_max_state);
> -	if (result)
> -		goto unregister;
> -
> -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> -	if (result)
> -		goto unregister;
> -
> -	/* Add 'this' new cdev to the global cdev list */
> -	mutex_lock(&thermal_list_lock);
> -	list_add(&cdev->node, &thermal_cdev_list);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	/* Update binding information for 'this' new cdev */
> -	bind_cdev(cdev);
> -
> -	return cdev;
> -
> -unregister:
> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> -	device_unregister(&cdev->device);
> -	return ERR_PTR(result);
> -}
> -EXPORT_SYMBOL(thermal_cooling_device_register);
> -
> -/**
> - * thermal_cooling_device_unregister - removes the registered thermal
> cooling device
> - * @cdev:	the thermal cooling device to remove.
> - *
> - * thermal_cooling_device_unregister() must be called when the device is
> no
> - * longer needed.
> - */
> -void thermal_cooling_device_unregister(struct thermal_cooling_device
> *cdev)
> -{
> -	int i;
> -	const struct thermal_zone_params *tzp;
> -	struct thermal_zone_device *tz;
> -	struct thermal_cooling_device *pos = NULL;
> -
> -	if (!cdev)
> -		return;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(pos, &thermal_cdev_list, node)
> -	    if (pos == cdev)
> -		break;
> -	if (pos != cdev) {
> -		/* thermal cooling device not found */
> -		mutex_unlock(&thermal_list_lock);
> -		return;
> -	}
> -	list_del(&cdev->node);
> -
> -	/* Unbind all thermal zones associated with 'this' cdev */
> -	list_for_each_entry(tz, &thermal_tz_list, node) {
> -		if (tz->ops->unbind) {
> -			tz->ops->unbind(tz, cdev);
> -			continue;
> -		}
> -
> -		if (!tz->tzp || !tz->tzp->tbp)
> -			continue;
> -
> -		tzp = tz->tzp;
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev == cdev) {
> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> -				tzp->tbp[i].cdev = NULL;
> -			}
> -		}
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -
> -	if (cdev->type[0])
> -		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> -	device_remove_file(&cdev->device, &dev_attr_max_state);
> -	device_remove_file(&cdev->device, &dev_attr_cur_state);
> -
> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> -	device_unregister(&cdev->device);
> -	return;
> -}
> -EXPORT_SYMBOL(thermal_cooling_device_unregister);
> -
> -void thermal_cdev_update(struct thermal_cooling_device *cdev)
> -{
> -	struct thermal_instance *instance;
> -	unsigned long target = 0;
> -
> -	/* cooling device is updated*/
> -	if (cdev->updated)
> -		return;
> -
> -	mutex_lock(&cdev->lock);
> -	/* Make sure cdev enters the deepest cooling state */
> -	list_for_each_entry(instance, &cdev->thermal_instances,
> cdev_node) {
> -		if (instance->target == THERMAL_NO_TARGET)
> -			continue;
> -		if (instance->target > target)
> -			target = instance->target;
> -	}
> -	mutex_unlock(&cdev->lock);
> -	cdev->ops->set_cur_state(cdev, target);
> -	cdev->updated = true;
> -}
> -EXPORT_SYMBOL(thermal_cdev_update);
> -
> -/**
> - * notify_thermal_framework - Sensor drivers use this API to notify
> framework
> - * @tz:		thermal zone device
> - * @trip:	indicates which trip point has been crossed
> - *
> - * This function handles the trip events from sensor drivers. It starts
> - * throttling the cooling devices according to the policy configured.
> - * For CRITICAL and HOT trip points, this notifies the respective drivers,
> - * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> - * The throttling policy is based on the configured platform data; if no
> - * platform data is provided, this uses the step_wise throttling policy.
> - */
> -void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> -{
> -	handle_thermal_trip(tz, trip);
> -}
> -EXPORT_SYMBOL(notify_thermal_framework);
> -
> -/**
> - * create_trip_attrs - create attributes for trip points
> - * @tz:		the thermal zone device
> - * @mask:	Writeable trip point bitmap.
> - */
> -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> -{
> -	int indx;
> -	int size = sizeof(struct thermal_attr) * tz->trips;
> -
> -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> -	if (!tz->trip_type_attrs)
> -		return -ENOMEM;
> -
> -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> -	if (!tz->trip_temp_attrs) {
> -		kfree(tz->trip_type_attrs);
> -		return -ENOMEM;
> -	}
> -
> -	if (tz->ops->get_trip_hyst) {
> -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> -		if (!tz->trip_hyst_attrs) {
> -			kfree(tz->trip_type_attrs);
> -			kfree(tz->trip_temp_attrs);
> -			return -ENOMEM;
> -		}
> -	}
> -
> -
> -	for (indx = 0; indx < tz->trips; indx++) {
> -		/* create trip type attribute */
> -		snprintf(tz->trip_type_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> -			 "trip_point_%d_type", indx);
> -
> -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> -		tz->trip_type_attrs[indx].attr.attr.name =
> -						tz-
> >trip_type_attrs[indx].name;
> -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> -
> -		device_create_file(&tz->device,
> -				   &tz->trip_type_attrs[indx].attr);
> -
> -		/* create trip temp attribute */
> -		snprintf(tz->trip_temp_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> -			 "trip_point_%d_temp", indx);
> -
> -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> -		tz->trip_temp_attrs[indx].attr.attr.name =
> -						tz-
> >trip_temp_attrs[indx].name;
> -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> -		tz->trip_temp_attrs[indx].attr.show =
> trip_point_temp_show;
> -		if (mask & (1 << indx)) {
> -			tz->trip_temp_attrs[indx].attr.attr.mode |=
> S_IWUSR;
> -			tz->trip_temp_attrs[indx].attr.store =
> -
> 	trip_point_temp_store;
> -		}
> -
> -		device_create_file(&tz->device,
> -				   &tz->trip_temp_attrs[indx].attr);
> -
> -		/* create Optional trip hyst attribute */
> -		if (!tz->ops->get_trip_hyst)
> -			continue;
> -		snprintf(tz->trip_hyst_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> -			 "trip_point_%d_hyst", indx);
> -
> -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> -		tz->trip_hyst_attrs[indx].attr.attr.name =
> -					tz->trip_hyst_attrs[indx].name;
> -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> -		if (tz->ops->set_trip_hyst) {
> -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> -			tz->trip_hyst_attrs[indx].attr.store =
> -					trip_point_hyst_store;
> -		}
> -
> -		device_create_file(&tz->device,
> -				   &tz->trip_hyst_attrs[indx].attr);
> -	}
> -	return 0;
> -}
> -
> -static void remove_trip_attrs(struct thermal_zone_device *tz)
> -{
> -	int indx;
> -
> -	for (indx = 0; indx < tz->trips; indx++) {
> -		device_remove_file(&tz->device,
> -				   &tz->trip_type_attrs[indx].attr);
> -		device_remove_file(&tz->device,
> -				   &tz->trip_temp_attrs[indx].attr);
> -		if (tz->ops->get_trip_hyst)
> -			device_remove_file(&tz->device,
> -				  &tz->trip_hyst_attrs[indx].attr);
> -	}
> -	kfree(tz->trip_type_attrs);
> -	kfree(tz->trip_temp_attrs);
> -	kfree(tz->trip_hyst_attrs);
> -}
> -
> -/**
> - * thermal_zone_device_register - register a new thermal zone device
> - * @type:	the thermal zone device type
> - * @trips:	the number of trip points the thermal zone support
> - * @mask:	a bit string indicating the writeablility of trip points
> - * @devdata:	private device data
> - * @ops:	standard thermal zone device callbacks
> - * @tzp:	thermal zone platform parameters
> - * @passive_delay: number of milliseconds to wait between polls when
> - *		   performing passive cooling
> - * @polling_delay: number of milliseconds to wait between polls when
> checking
> - *		   whether trip points have been crossed (0 for interrupt
> - *		   driven systems)
> - *
> - * thermal_zone_device_unregister() must be called when the device is no
> - * longer needed. The passive cooling depends on the .get_trend() return
> value.
> - */
> -struct thermal_zone_device *thermal_zone_device_register(const char
> *type,
> -	int trips, int mask, void *devdata,
> -	const struct thermal_zone_device_ops *ops,
> -	const struct thermal_zone_params *tzp,
> -	int passive_delay, int polling_delay)
> -{
> -	struct thermal_zone_device *tz;
> -	enum thermal_trip_type trip_type;
> -	int result;
> -	int count;
> -	int passive = 0;
> -
> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (!ops || !ops->get_temp)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (trips > 0 && !ops->get_trip_type)
> -		return ERR_PTR(-EINVAL);
> -
> -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> -	if (!tz)
> -		return ERR_PTR(-ENOMEM);
> -
> -	INIT_LIST_HEAD(&tz->thermal_instances);
> -	idr_init(&tz->idr);
> -	mutex_init(&tz->lock);
> -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> -	if (result) {
> -		kfree(tz);
> -		return ERR_PTR(result);
> -	}
> -
> -	strcpy(tz->type, type ? : "");
> -	tz->ops = ops;
> -	tz->tzp = tzp;
> -	tz->device.class = &thermal_class;
> -	tz->devdata = devdata;
> -	tz->trips = trips;
> -	tz->passive_delay = passive_delay;
> -	tz->polling_delay = polling_delay;
> -
> -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> -	result = device_register(&tz->device);
> -	if (result) {
> -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> -		kfree(tz);
> -		return ERR_PTR(result);
> -	}
> -
> -	/* sys I/F */
> -	if (type) {
> -		result = device_create_file(&tz->device, &dev_attr_type);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -	result = device_create_file(&tz->device, &dev_attr_temp);
> -	if (result)
> -		goto unregister;
> -
> -	if (ops->get_mode) {
> -		result = device_create_file(&tz->device, &dev_attr_mode);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -	result = create_trip_attrs(tz, mask);
> -	if (result)
> -		goto unregister;
> -
> -	for (count = 0; count < trips; count++) {
> -		tz->ops->get_trip_type(tz, count, &trip_type);
> -		if (trip_type == THERMAL_TRIP_PASSIVE)
> -			passive = 1;
> -	}
> -
> -	if (!passive) {
> -		result = device_create_file(&tz->device, &dev_attr_passive);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -#ifdef CONFIG_THERMAL_EMULATION
> -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> -	if (result)
> -		goto unregister;
> -#endif
> -	/* Create policy attribute */
> -	result = device_create_file(&tz->device, &dev_attr_policy);
> -	if (result)
> -		goto unregister;
> -
> -	/* Update 'this' zone's governor information */
> -	mutex_lock(&thermal_governor_lock);
> -
> -	if (tz->tzp)
> -		tz->governor = __find_governor(tz->tzp->governor_name);
> -	else
> -		tz->governor =
> __find_governor(DEFAULT_THERMAL_GOVERNOR);
> -
> -	mutex_unlock(&thermal_governor_lock);
> -
> -	result = thermal_add_hwmon_sysfs(tz);
> -	if (result)
> -		goto unregister;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_add_tail(&tz->node, &thermal_tz_list);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	/* Bind cooling devices for this zone */
> -	bind_tz(tz);
> -
> -	INIT_DELAYED_WORK(&(tz->poll_queue),
> thermal_zone_device_check);
> -
> -	thermal_zone_device_update(tz);
> -
> -	if (!result)
> -		return tz;
> -
> -unregister:
> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> -	device_unregister(&tz->device);
> -	return ERR_PTR(result);
> -}
> -EXPORT_SYMBOL(thermal_zone_device_register);
> -
> -/**
> - * thermal_device_unregister - removes the registered thermal zone device
> - * @tz: the thermal zone device to remove
> - */
> -void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> -{
> -	int i;
> -	const struct thermal_zone_params *tzp;
> -	struct thermal_cooling_device *cdev;
> -	struct thermal_zone_device *pos = NULL;
> -
> -	if (!tz)
> -		return;
> -
> -	tzp = tz->tzp;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(pos, &thermal_tz_list, node)
> -	    if (pos == tz)
> -		break;
> -	if (pos != tz) {
> -		/* thermal zone device not found */
> -		mutex_unlock(&thermal_list_lock);
> -		return;
> -	}
> -	list_del(&tz->node);
> -
> -	/* Unbind all cdevs associated with 'this' thermal zone */
> -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> -		if (tz->ops->unbind) {
> -			tz->ops->unbind(tz, cdev);
> -			continue;
> -		}
> -
> -		if (!tzp || !tzp->tbp)
> -			break;
> -
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev == cdev) {
> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> -				tzp->tbp[i].cdev = NULL;
> -			}
> -		}
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -
> -	thermal_zone_device_set_polling(tz, 0);
> -
> -	if (tz->type[0])
> -		device_remove_file(&tz->device, &dev_attr_type);
> -	device_remove_file(&tz->device, &dev_attr_temp);
> -	if (tz->ops->get_mode)
> -		device_remove_file(&tz->device, &dev_attr_mode);
> -	device_remove_file(&tz->device, &dev_attr_policy);
> -	remove_trip_attrs(tz);
> -	tz->governor = NULL;
> -
> -	thermal_remove_hwmon_sysfs(tz);
> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> -	idr_destroy(&tz->idr);
> -	mutex_destroy(&tz->lock);
> -	device_unregister(&tz->device);
> -	return;
> -}
> -EXPORT_SYMBOL(thermal_zone_device_unregister);
> -
> -#ifdef CONFIG_NET
> -static struct genl_family thermal_event_genl_family = {
> -	.id = GENL_ID_GENERATE,
> -	.name = THERMAL_GENL_FAMILY_NAME,
> -	.version = THERMAL_GENL_VERSION,
> -	.maxattr = THERMAL_GENL_ATTR_MAX,
> -};
> -
> -static struct genl_multicast_group thermal_event_mcgrp = {
> -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> -};
> -
> -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> -					enum events event)
> -{
> -	struct sk_buff *skb;
> -	struct nlattr *attr;
> -	struct thermal_genl_event *thermal_event;
> -	void *msg_header;
> -	int size;
> -	int result;
> -	static unsigned int thermal_event_seqnum;
> -
> -	if (!tz)
> -		return -EINVAL;
> -
> -	/* allocate memory */
> -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> -	       nla_total_size(0);
> -
> -	skb = genlmsg_new(size, GFP_ATOMIC);
> -	if (!skb)
> -		return -ENOMEM;
> -
> -	/* add the genetlink message header */
> -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> -				 &thermal_event_genl_family, 0,
> -				 THERMAL_GENL_CMD_EVENT);
> -	if (!msg_header) {
> -		nlmsg_free(skb);
> -		return -ENOMEM;
> -	}
> -
> -	/* fill the data */
> -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> -			   sizeof(struct thermal_genl_event));
> -
> -	if (!attr) {
> -		nlmsg_free(skb);
> -		return -EINVAL;
> -	}
> -
> -	thermal_event = nla_data(attr);
> -	if (!thermal_event) {
> -		nlmsg_free(skb);
> -		return -EINVAL;
> -	}
> -
> -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> -
> -	thermal_event->orig = tz->id;
> -	thermal_event->event = event;
> -
> -	/* send multicast genetlink message */
> -	result = genlmsg_end(skb, msg_header);
> -	if (result < 0) {
> -		nlmsg_free(skb);
> -		return result;
> -	}
> -
> -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id,
> GFP_ATOMIC);
> -	if (result)
> -		dev_err(&tz->device, "Failed to send netlink event:%d",
> result);
> -
> -	return result;
> -}
> -EXPORT_SYMBOL(thermal_generate_netlink_event);
> -
> -static int genetlink_init(void)
> -{
> -	int result;
> -
> -	result = genl_register_family(&thermal_event_genl_family);
> -	if (result)
> -		return result;
> -
> -	result = genl_register_mc_group(&thermal_event_genl_family,
> -					&thermal_event_mcgrp);
> -	if (result)
> -		genl_unregister_family(&thermal_event_genl_family);
> -	return result;
> -}
> -
> -static void genetlink_exit(void)
> -{
> -	genl_unregister_family(&thermal_event_genl_family);
> -}
> -#else /* !CONFIG_NET */
> -static inline int genetlink_init(void) { return 0; }
> -static inline void genetlink_exit(void) {}
> -#endif /* !CONFIG_NET */
> -
> -static int __init thermal_init(void)
> -{
> -	int result = 0;
> -
> -	result = class_register(&thermal_class);
> -	if (result) {
> -		idr_destroy(&thermal_tz_idr);
> -		idr_destroy(&thermal_cdev_idr);
> -		mutex_destroy(&thermal_idr_lock);
> -		mutex_destroy(&thermal_list_lock);
> -		return result;
> -	}
> -	result = genetlink_init();
> -	return result;
> -}
> -
> -static void __exit thermal_exit(void)
> -{
> -	class_unregister(&thermal_class);
> -	idr_destroy(&thermal_tz_idr);
> -	idr_destroy(&thermal_cdev_idr);
> -	mutex_destroy(&thermal_idr_lock);
> -	mutex_destroy(&thermal_list_lock);
> -	genetlink_exit();
> -}
> -
> -fs_initcall(thermal_init);
> -module_exit(thermal_exit);
> --
> 1.7.9.5

RE: [RFC PATCH 1/5] Thermal: rename thermal_sys.c to thermal_core.c

[Zhang Rui]

On Tue, 2013-03-26 at 10:56 -0600, R, Durgadoss wrote:
> > -----Original Message-----
> > From: Zhang, Rui
> > Sent: Tuesday, March 26, 2013 9:56 PM
> > To: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> > Cc: amit.daniel@samsung.com; R, Durgadoss; andi@lisas.de; Zhang, Rui
> > Subject: [RFC PATCH 1/5] Thermal: rename thermal_sys.c to thermal_core.c
> > 
> > No functional change in this patch.
> > 
> > Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> > ---
> >  drivers/thermal/Makefile       |    1 +
> >  drivers/thermal/thermal_core.c | 1888
> > ++++++++++++++++++++++++++++++++++++++++
> >  drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
> >  3 files changed, 1889 insertions(+), 1888 deletions(-)
> >  create mode 100644 drivers/thermal/thermal_core.c
> >  delete mode 100644 drivers/thermal/thermal_sys.c
> > 
> > diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> > index d3a2b38..b2009bd 100644
> > --- a/drivers/thermal/Makefile
> > +++ b/drivers/thermal/Makefile
> > @@ -3,6 +3,7 @@
> >  #
> > 
> >  obj-$(CONFIG_THERMAL)		+= thermal_sys.o
> 
> Should we keep the _sys suffix ?
> Can we just rename it to thermal.o ?
> 
thermal.ko already exists, aka, drivers/acpi/thermal.c.

thanks,
rui
> > +thermal_sys-y			+= thermal_core.o
> > 
> >  # governors
> >  obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> > diff --git a/drivers/thermal/thermal_core.c
> > b/drivers/thermal/thermal_core.c
> > new file mode 100644
> > index 0000000..5b7863a
> > --- /dev/null
> > +++ b/drivers/thermal/thermal_core.c
> > @@ -0,0 +1,1888 @@
> > +/*
> > + *  thermal.c - Generic Thermal Management Sysfs support.
> > + *
> > + *  Copyright (C) 2008 Intel Corp
> > + *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> > + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> > + *
> > + *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> > + *
> > + *  This program is free software; you can redistribute it and/or modify
> > + *  it under the terms of the GNU General Public License as published by
> > + *  the Free Software Foundation; version 2 of the License.
> > + *
> > + *  This program is distributed in the hope that it will be useful, but
> > + *  WITHOUT ANY WARRANTY; without even the implied warranty of
> > + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > GNU
> > + *  General Public License for more details.
> > + *
> > + *  You should have received a copy of the GNU General Public License
> > along
> > + *  with this program; if not, write to the Free Software Foundation, Inc.,
> > + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> > + *
> > + *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> > + */
> > +
> > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > +
> > +#include <linux/module.h>
> > +#include <linux/device.h>
> > +#include <linux/err.h>
> > +#include <linux/slab.h>
> > +#include <linux/kdev_t.h>
> > +#include <linux/idr.h>
> > +#include <linux/thermal.h>
> > +#include <linux/reboot.h>
> > +#include <net/netlink.h>
> > +#include <net/genetlink.h>
> > +
> > +#include "thermal_core.h"
> > +
> > +MODULE_AUTHOR("Zhang Rui");
> > +MODULE_DESCRIPTION("Generic thermal management sysfs support");
> > +MODULE_LICENSE("GPL");
> > +
> > +static DEFINE_IDR(thermal_tz_idr);
> > +static DEFINE_IDR(thermal_cdev_idr);
> > +static DEFINE_MUTEX(thermal_idr_lock);
> > +
> > +static LIST_HEAD(thermal_tz_list);
> > +static LIST_HEAD(thermal_cdev_list);
> > +static LIST_HEAD(thermal_governor_list);
> > +
> > +static DEFINE_MUTEX(thermal_list_lock);
> > +static DEFINE_MUTEX(thermal_governor_lock);
> > +
> > +static struct thermal_governor *__find_governor(const char *name)
> > +{
> > +	struct thermal_governor *pos;
> > +
> > +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> > +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> > +			return pos;
> > +
> > +	return NULL;
> > +}
> > +
> > +int thermal_register_governor(struct thermal_governor *governor)
> > +{
> > +	int err;
> > +	const char *name;
> > +	struct thermal_zone_device *pos;
> > +
> > +	if (!governor)
> > +		return -EINVAL;
> > +
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	err = -EBUSY;
> > +	if (__find_governor(governor->name) == NULL) {
> > +		err = 0;
> > +		list_add(&governor->governor_list,
> > &thermal_governor_list);
> > +	}
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	list_for_each_entry(pos, &thermal_tz_list, node) {
> > +		if (pos->governor)
> > +			continue;
> > +		if (pos->tzp)
> > +			name = pos->tzp->governor_name;
> > +		else
> > +			name = DEFAULT_THERMAL_GOVERNOR;
> > +		if (!strnicmp(name, governor->name,
> > THERMAL_NAME_LENGTH))
> > +			pos->governor = governor;
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +	mutex_unlock(&thermal_governor_lock);
> > +
> > +	return err;
> > +}
> > +EXPORT_SYMBOL_GPL(thermal_register_governor);
> > +
> > +void thermal_unregister_governor(struct thermal_governor *governor)
> > +{
> > +	struct thermal_zone_device *pos;
> > +
> > +	if (!governor)
> > +		return;
> > +
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	if (__find_governor(governor->name) == NULL)
> > +		goto exit;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	list_for_each_entry(pos, &thermal_tz_list, node) {
> > +		if (!strnicmp(pos->governor->name, governor->name,
> > +						THERMAL_NAME_LENGTH))
> > +			pos->governor = NULL;
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +	list_del(&governor->governor_list);
> > +exit:
> > +	mutex_unlock(&thermal_governor_lock);
> > +	return;
> > +}
> > +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> > +
> > +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> > +{
> > +	int ret;
> > +
> > +	if (lock)
> > +		mutex_lock(lock);
> > +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> > +	if (lock)
> > +		mutex_unlock(lock);
> > +	if (unlikely(ret < 0))
> > +		return ret;
> > +	*id = ret;
> > +	return 0;
> > +}
> > +
> > +static void release_idr(struct idr *idr, struct mutex *lock, int id)
> > +{
> > +	if (lock)
> > +		mutex_lock(lock);
> > +	idr_remove(idr, id);
> > +	if (lock)
> > +		mutex_unlock(lock);
> > +}
> > +
> > +int get_tz_trend(struct thermal_zone_device *tz, int trip)
> > +{
> > +	enum thermal_trend trend;
> > +
> > +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> > +		if (tz->temperature > tz->last_temperature)
> > +			trend = THERMAL_TREND_RAISING;
> > +		else if (tz->temperature < tz->last_temperature)
> > +			trend = THERMAL_TREND_DROPPING;
> > +		else
> > +			trend = THERMAL_TREND_STABLE;
> > +	}
> > +
> > +	return trend;
> > +}
> > +EXPORT_SYMBOL(get_tz_trend);
> > +
> > +struct thermal_instance *get_thermal_instance(struct
> > thermal_zone_device *tz,
> > +			struct thermal_cooling_device *cdev, int trip)
> > +{
> > +	struct thermal_instance *pos = NULL;
> > +	struct thermal_instance *target_instance = NULL;
> > +
> > +	mutex_lock(&tz->lock);
> > +	mutex_lock(&cdev->lock);
> > +
> > +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> > +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > +			target_instance = pos;
> > +			break;
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&cdev->lock);
> > +	mutex_unlock(&tz->lock);
> > +
> > +	return target_instance;
> > +}
> > +EXPORT_SYMBOL(get_thermal_instance);
> > +
> > +static void print_bind_err_msg(struct thermal_zone_device *tz,
> > +			struct thermal_cooling_device *cdev, int ret)
> > +{
> > +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> > +				tz->type, cdev->type, ret);
> > +}
> > +
> > +static void __bind(struct thermal_zone_device *tz, int mask,
> > +			struct thermal_cooling_device *cdev)
> > +{
> > +	int i, ret;
> > +
> > +	for (i = 0; i < tz->trips; i++) {
> > +		if (mask & (1 << i)) {
> > +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> > +					THERMAL_NO_LIMIT,
> > THERMAL_NO_LIMIT);
> > +			if (ret)
> > +				print_bind_err_msg(tz, cdev, ret);
> > +		}
> > +	}
> > +}
> > +
> > +static void __unbind(struct thermal_zone_device *tz, int mask,
> > +			struct thermal_cooling_device *cdev)
> > +{
> > +	int i;
> > +
> > +	for (i = 0; i < tz->trips; i++)
> > +		if (mask & (1 << i))
> > +			thermal_zone_unbind_cooling_device(tz, i, cdev);
> > +}
> > +
> > +static void bind_cdev(struct thermal_cooling_device *cdev)
> > +{
> > +	int i, ret;
> > +	const struct thermal_zone_params *tzp;
> > +	struct thermal_zone_device *pos = NULL;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	list_for_each_entry(pos, &thermal_tz_list, node) {
> > +		if (!pos->tzp && !pos->ops->bind)
> > +			continue;
> > +
> > +		if (!pos->tzp && pos->ops->bind) {
> > +			ret = pos->ops->bind(pos, cdev);
> > +			if (ret)
> > +				print_bind_err_msg(pos, cdev, ret);
> > +		}
> > +
> > +		tzp = pos->tzp;
> > +		if (!tzp || !tzp->tbp)
> > +			continue;
> > +
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > +				continue;
> > +			if (tzp->tbp[i].match(pos, cdev))
> > +				continue;
> > +			tzp->tbp[i].cdev = cdev;
> > +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +}
> > +
> > +static void bind_tz(struct thermal_zone_device *tz)
> > +{
> > +	int i, ret;
> > +	struct thermal_cooling_device *pos = NULL;
> > +	const struct thermal_zone_params *tzp = tz->tzp;
> > +
> > +	if (!tzp && !tz->ops->bind)
> > +		return;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	/* If there is no platform data, try to use ops->bind */
> > +	if (!tzp && tz->ops->bind) {
> > +		list_for_each_entry(pos, &thermal_cdev_list, node) {
> > +			ret = tz->ops->bind(tz, pos);
> > +			if (ret)
> > +				print_bind_err_msg(tz, pos, ret);
> > +		}
> > +		goto exit;
> > +	}
> > +
> > +	if (!tzp || !tzp->tbp)
> > +		goto exit;
> > +
> > +	list_for_each_entry(pos, &thermal_cdev_list, node) {
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > +				continue;
> > +			if (tzp->tbp[i].match(tz, pos))
> > +				continue;
> > +			tzp->tbp[i].cdev = pos;
> > +			__bind(tz, tzp->tbp[i].trip_mask, pos);
> > +		}
> > +	}
> > +exit:
> > +	mutex_unlock(&thermal_list_lock);
> > +}
> > +
> > +static void thermal_zone_device_set_polling(struct thermal_zone_device
> > *tz,
> > +					    int delay)
> > +{
> > +	if (delay > 1000)
> > +		mod_delayed_work(system_freezable_wq, &tz-
> > >poll_queue,
> > +				 round_jiffies(msecs_to_jiffies(delay)));
> > +	else if (delay)
> > +		mod_delayed_work(system_freezable_wq, &tz-
> > >poll_queue,
> > +				 msecs_to_jiffies(delay));
> > +	else
> > +		cancel_delayed_work(&tz->poll_queue);
> > +}
> > +
> > +static void monitor_thermal_zone(struct thermal_zone_device *tz)
> > +{
> > +	mutex_lock(&tz->lock);
> > +
> > +	if (tz->passive)
> > +		thermal_zone_device_set_polling(tz, tz->passive_delay);
> > +	else if (tz->polling_delay)
> > +		thermal_zone_device_set_polling(tz, tz->polling_delay);
> > +	else
> > +		thermal_zone_device_set_polling(tz, 0);
> > +
> > +	mutex_unlock(&tz->lock);
> > +}
> > +
> > +static void handle_non_critical_trips(struct thermal_zone_device *tz,
> > +			int trip, enum thermal_trip_type trip_type)
> > +{
> > +	if (tz->governor)
> > +		tz->governor->throttle(tz, trip);
> > +}
> > +
> > +static void handle_critical_trips(struct thermal_zone_device *tz,
> > +				int trip, enum thermal_trip_type trip_type)
> > +{
> > +	long trip_temp;
> > +
> > +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> > +
> > +	/* If we have not crossed the trip_temp, we do not care. */
> > +	if (tz->temperature < trip_temp)
> > +		return;
> > +
> > +	if (tz->ops->notify)
> > +		tz->ops->notify(tz, trip, trip_type);
> > +
> > +	if (trip_type == THERMAL_TRIP_CRITICAL) {
> > +		dev_emerg(&tz->device,
> > +			  "critical temperature reached(%d C),shutting
> > down\n",
> > +			  tz->temperature / 1000);
> > +		orderly_poweroff(true);
> > +	}
> > +}
> > +
> > +static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> > +{
> > +	enum thermal_trip_type type;
> > +
> > +	tz->ops->get_trip_type(tz, trip, &type);
> > +
> > +	if (type == THERMAL_TRIP_CRITICAL || type ==
> > THERMAL_TRIP_HOT)
> > +		handle_critical_trips(tz, trip, type);
> > +	else
> > +		handle_non_critical_trips(tz, trip, type);
> > +	/*
> > +	 * Alright, we handled this trip successfully.
> > +	 * So, start monitoring again.
> > +	 */
> > +	monitor_thermal_zone(tz);
> > +}
> > +
> > +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> > +				unsigned long *temp)
> > +{
> > +	int ret = 0;
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +	int count;
> > +	unsigned long crit_temp = -1UL;
> > +	enum thermal_trip_type type;
> > +#endif
> > +
> > +	mutex_lock(&tz->lock);
> > +
> > +	ret = tz->ops->get_temp(tz, temp);
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +	if (!tz->emul_temperature)
> > +		goto skip_emul;
> > +
> > +	for (count = 0; count < tz->trips; count++) {
> > +		ret = tz->ops->get_trip_type(tz, count, &type);
> > +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> > +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> > +			break;
> > +		}
> > +	}
> > +
> > +	if (ret)
> > +		goto skip_emul;
> > +
> > +	if (*temp < crit_temp)
> > +		*temp = tz->emul_temperature;
> > +skip_emul:
> > +#endif
> > +	mutex_unlock(&tz->lock);
> > +	return ret;
> > +}
> > +
> > +static void update_temperature(struct thermal_zone_device *tz)
> > +{
> > +	long temp;
> > +	int ret;
> > +
> > +	ret = thermal_zone_get_temp(tz, &temp);
> > +	if (ret) {
> > +		dev_warn(&tz->device, "failed to read out thermal zone
> > %d\n",
> > +			 tz->id);
> > +		return;
> > +	}
> > +
> > +	mutex_lock(&tz->lock);
> > +	tz->last_temperature = tz->temperature;
> > +	tz->temperature = temp;
> > +	mutex_unlock(&tz->lock);
> > +}
> > +
> > +void thermal_zone_device_update(struct thermal_zone_device *tz)
> > +{
> > +	int count;
> > +
> > +	update_temperature(tz);
> > +
> > +	for (count = 0; count < tz->trips; count++)
> > +		handle_thermal_trip(tz, count);
> > +}
> > +EXPORT_SYMBOL(thermal_zone_device_update);
> > +
> > +static void thermal_zone_device_check(struct work_struct *work)
> > +{
> > +	struct thermal_zone_device *tz = container_of(work, struct
> > +						      thermal_zone_device,
> > +						      poll_queue.work);
> > +	thermal_zone_device_update(tz);
> > +}
> > +
> > +/* sys I/F for thermal zone */
> > +
> > +#define to_thermal_zone(_dev) \
> > +	container_of(_dev, struct thermal_zone_device, device)
> > +
> > +static ssize_t
> > +type_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +
> > +	return sprintf(buf, "%s\n", tz->type);
> > +}
> > +
> > +static ssize_t
> > +temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	long temperature;
> > +	int ret;
> > +
> > +	ret = thermal_zone_get_temp(tz, &temperature);
> > +
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	enum thermal_device_mode mode;
> > +	int result;
> > +
> > +	if (!tz->ops->get_mode)
> > +		return -EPERM;
> > +
> > +	result = tz->ops->get_mode(tz, &mode);
> > +	if (result)
> > +		return result;
> > +
> > +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ?
> > "enabled"
> > +		       : "disabled");
> > +}
> > +
> > +static ssize_t
> > +mode_store(struct device *dev, struct device_attribute *attr,
> > +	   const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int result;
> > +
> > +	if (!tz->ops->set_mode)
> > +		return -EPERM;
> > +
> > +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> > +		result = tz->ops->set_mode(tz,
> > THERMAL_DEVICE_ENABLED);
> > +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> > +		result = tz->ops->set_mode(tz,
> > THERMAL_DEVICE_DISABLED);
> > +	else
> > +		result = -EINVAL;
> > +
> > +	if (result)
> > +		return result;
> > +
> > +	return count;
> > +}
> > +
> > +static ssize_t
> > +trip_point_type_show(struct device *dev, struct device_attribute *attr,
> > +		     char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	enum thermal_trip_type type;
> > +	int trip, result;
> > +
> > +	if (!tz->ops->get_trip_type)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> > +		return -EINVAL;
> > +
> > +	result = tz->ops->get_trip_type(tz, trip, &type);
> > +	if (result)
> > +		return result;
> > +
> > +	switch (type) {
> > +	case THERMAL_TRIP_CRITICAL:
> > +		return sprintf(buf, "critical\n");
> > +	case THERMAL_TRIP_HOT:
> > +		return sprintf(buf, "hot\n");
> > +	case THERMAL_TRIP_PASSIVE:
> > +		return sprintf(buf, "passive\n");
> > +	case THERMAL_TRIP_ACTIVE:
> > +		return sprintf(buf, "active\n");
> > +	default:
> > +		return sprintf(buf, "unknown\n");
> > +	}
> > +}
> > +
> > +static ssize_t
> > +trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> > +		     const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	unsigned long temperature;
> > +
> > +	if (!tz->ops->set_trip_temp)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > +		return -EINVAL;
> > +
> > +	if (kstrtoul(buf, 10, &temperature))
> > +		return -EINVAL;
> > +
> > +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> > +
> > +	return ret ? ret : count;
> > +}
> > +
> > +static ssize_t
> > +trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> > +		     char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	long temperature;
> > +
> > +	if (!tz->ops->get_trip_temp)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > +		return -EINVAL;
> > +
> > +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> > +
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> > +			const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	unsigned long temperature;
> > +
> > +	if (!tz->ops->set_trip_hyst)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > +		return -EINVAL;
> > +
> > +	if (kstrtoul(buf, 10, &temperature))
> > +		return -EINVAL;
> > +
> > +	/*
> > +	 * We are not doing any check on the 'temperature' value
> > +	 * here. The driver implementing 'set_trip_hyst' has to
> > +	 * take care of this.
> > +	 */
> > +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> > +
> > +	return ret ? ret : count;
> > +}
> > +
> > +static ssize_t
> > +trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> > +			char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	unsigned long temperature;
> > +
> > +	if (!tz->ops->get_trip_hyst)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > +		return -EINVAL;
> > +
> > +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> > +
> > +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +passive_store(struct device *dev, struct device_attribute *attr,
> > +		    const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	struct thermal_cooling_device *cdev = NULL;
> > +	int state;
> > +
> > +	if (!sscanf(buf, "%d\n", &state))
> > +		return -EINVAL;
> > +
> > +	/* sanity check: values below 1000 millicelcius don't make sense
> > +	 * and can cause the system to go into a thermal heart attack
> > +	 */
> > +	if (state && state < 1000)
> > +		return -EINVAL;
> > +
> > +	if (state && !tz->forced_passive) {
> > +		mutex_lock(&thermal_list_lock);
> > +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > +			if (!strncmp("Processor", cdev->type,
> > +				     sizeof("Processor")))
> > +				thermal_zone_bind_cooling_device(tz,
> > +						THERMAL_TRIPS_NONE,
> > cdev,
> > +						THERMAL_NO_LIMIT,
> > +						THERMAL_NO_LIMIT);
> > +		}
> > +		mutex_unlock(&thermal_list_lock);
> > +		if (!tz->passive_delay)
> > +			tz->passive_delay = 1000;
> > +	} else if (!state && tz->forced_passive) {
> > +		mutex_lock(&thermal_list_lock);
> > +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > +			if (!strncmp("Processor", cdev->type,
> > +				     sizeof("Processor")))
> > +				thermal_zone_unbind_cooling_device(tz,
> > +
> > THERMAL_TRIPS_NONE,
> > +								   cdev);
> > +		}
> > +		mutex_unlock(&thermal_list_lock);
> > +		tz->passive_delay = 0;
> > +	}
> > +
> > +	tz->forced_passive = state;
> > +
> > +	thermal_zone_device_update(tz);
> > +
> > +	return count;
> > +}
> > +
> > +static ssize_t
> > +passive_show(struct device *dev, struct device_attribute *attr,
> > +		   char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +
> > +	return sprintf(buf, "%d\n", tz->forced_passive);
> > +}
> > +
> > +static ssize_t
> > +policy_store(struct device *dev, struct device_attribute *attr,
> > +		    const char *buf, size_t count)
> > +{
> > +	int ret = -EINVAL;
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	struct thermal_governor *gov;
> > +
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	gov = __find_governor(buf);
> > +	if (!gov)
> > +		goto exit;
> > +
> > +	tz->governor = gov;
> > +	ret = count;
> > +
> > +exit:
> > +	mutex_unlock(&thermal_governor_lock);
> > +	return ret;
> > +}
> > +
> > +static ssize_t
> > +policy_show(struct device *dev, struct device_attribute *devattr, char
> > *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +
> > +	return sprintf(buf, "%s\n", tz->governor->name);
> > +}
> > +
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +static ssize_t
> > +emul_temp_store(struct device *dev, struct device_attribute *attr,
> > +		     const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int ret = 0;
> > +	unsigned long temperature;
> > +
> > +	if (kstrtoul(buf, 10, &temperature))
> > +		return -EINVAL;
> > +
> > +	if (!tz->ops->set_emul_temp) {
> > +		mutex_lock(&tz->lock);
> > +		tz->emul_temperature = temperature;
> > +		mutex_unlock(&tz->lock);
> > +	} else {
> > +		ret = tz->ops->set_emul_temp(tz, temperature);
> > +	}
> > +
> > +	return ret ? ret : count;
> > +}
> > +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> > +#endif/*CONFIG_THERMAL_EMULATION*/
> > +
> > +static DEVICE_ATTR(type, 0444, type_show, NULL);
> > +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> > +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> > +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> > passive_store);
> > +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> > policy_store);
> > +
> > +/* sys I/F for cooling device */
> > +#define to_cooling_device(_dev)	\
> > +	container_of(_dev, struct thermal_cooling_device, device)
> > +
> > +static ssize_t
> > +thermal_cooling_device_type_show(struct device *dev,
> > +				 struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +
> > +	return sprintf(buf, "%s\n", cdev->type);
> > +}
> > +
> > +static ssize_t
> > +thermal_cooling_device_max_state_show(struct device *dev,
> > +				      struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +	unsigned long state;
> > +	int ret;
> > +
> > +	ret = cdev->ops->get_max_state(cdev, &state);
> > +	if (ret)
> > +		return ret;
> > +	return sprintf(buf, "%ld\n", state);
> > +}
> > +
> > +static ssize_t
> > +thermal_cooling_device_cur_state_show(struct device *dev,
> > +				      struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +	unsigned long state;
> > +	int ret;
> > +
> > +	ret = cdev->ops->get_cur_state(cdev, &state);
> > +	if (ret)
> > +		return ret;
> > +	return sprintf(buf, "%ld\n", state);
> > +}
> > +
> > +static ssize_t
> > +thermal_cooling_device_cur_state_store(struct device *dev,
> > +				       struct device_attribute *attr,
> > +				       const char *buf, size_t count)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +	unsigned long state;
> > +	int result;
> > +
> > +	if (!sscanf(buf, "%ld\n", &state))
> > +		return -EINVAL;
> > +
> > +	if ((long)state < 0)
> > +		return -EINVAL;
> > +
> > +	result = cdev->ops->set_cur_state(cdev, state);
> > +	if (result)
> > +		return result;
> > +	return count;
> > +}
> > +
> > +static struct device_attribute dev_attr_cdev_type =
> > +__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> > +static DEVICE_ATTR(max_state, 0444,
> > +		   thermal_cooling_device_max_state_show, NULL);
> > +static DEVICE_ATTR(cur_state, 0644,
> > +		   thermal_cooling_device_cur_state_show,
> > +		   thermal_cooling_device_cur_state_store);
> > +
> > +static ssize_t
> > +thermal_cooling_device_trip_point_show(struct device *dev,
> > +				       struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_instance *instance;
> > +
> > +	instance =
> > +	    container_of(attr, struct thermal_instance, attr);
> > +
> > +	if (instance->trip == THERMAL_TRIPS_NONE)
> > +		return sprintf(buf, "-1\n");
> > +	else
> > +		return sprintf(buf, "%d\n", instance->trip);
> > +}
> > +
> > +/* Device management */
> > +
> > +#if defined(CONFIG_THERMAL_HWMON)
> > +
> > +/* hwmon sys I/F */
> > +#include <linux/hwmon.h>
> > +
> > +/* thermal zone devices with the same type share one hwmon device */
> > +struct thermal_hwmon_device {
> > +	char type[THERMAL_NAME_LENGTH];
> > +	struct device *device;
> > +	int count;
> > +	struct list_head tz_list;
> > +	struct list_head node;
> > +};
> > +
> > +struct thermal_hwmon_attr {
> > +	struct device_attribute attr;
> > +	char name[16];
> > +};
> > +
> > +/* one temperature input for each thermal zone */
> > +struct thermal_hwmon_temp {
> > +	struct list_head hwmon_node;
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> > +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> > +};
> > +
> > +static LIST_HEAD(thermal_hwmon_list);
> > +
> > +static ssize_t
> > +name_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> > +	return sprintf(buf, "%s\n", hwmon->type);
> > +}
> > +static DEVICE_ATTR(name, 0444, name_show, NULL);
> > +
> > +static ssize_t
> > +temp_input_show(struct device *dev, struct device_attribute *attr, char
> > *buf)
> > +{
> > +	long temperature;
> > +	int ret;
> > +	struct thermal_hwmon_attr *hwmon_attr
> > +			= container_of(attr, struct thermal_hwmon_attr,
> > attr);
> > +	struct thermal_hwmon_temp *temp
> > +			= container_of(hwmon_attr, struct
> > thermal_hwmon_temp,
> > +				       temp_input);
> > +	struct thermal_zone_device *tz = temp->tz;
> > +
> > +	ret = thermal_zone_get_temp(tz, &temperature);
> > +
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +temp_crit_show(struct device *dev, struct device_attribute *attr,
> > +		char *buf)
> > +{
> > +	struct thermal_hwmon_attr *hwmon_attr
> > +			= container_of(attr, struct thermal_hwmon_attr,
> > attr);
> > +	struct thermal_hwmon_temp *temp
> > +			= container_of(hwmon_attr, struct
> > thermal_hwmon_temp,
> > +				       temp_crit);
> > +	struct thermal_zone_device *tz = temp->tz;
> > +	long temperature;
> > +	int ret;
> > +
> > +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +
> > +static struct thermal_hwmon_device *
> > +thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_device *hwmon;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> > +		if (!strcmp(hwmon->type, tz->type)) {
> > +			mutex_unlock(&thermal_list_lock);
> > +			return hwmon;
> > +		}
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	return NULL;
> > +}
> > +
> > +/* Find the temperature input matching a given thermal zone */
> > +static struct thermal_hwmon_temp *
> > +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device
> > *hwmon,
> > +			  const struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_temp *temp;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> > +		if (temp->tz == tz) {
> > +			mutex_unlock(&thermal_list_lock);
> > +			return temp;
> > +		}
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	return NULL;
> > +}
> > +
> > +static int
> > +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_device *hwmon;
> > +	struct thermal_hwmon_temp *temp;
> > +	int new_hwmon_device = 1;
> > +	int result;
> > +
> > +	hwmon = thermal_hwmon_lookup_by_type(tz);
> > +	if (hwmon) {
> > +		new_hwmon_device = 0;
> > +		goto register_sys_interface;
> > +	}
> > +
> > +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device),
> > GFP_KERNEL);
> > +	if (!hwmon)
> > +		return -ENOMEM;
> > +
> > +	INIT_LIST_HEAD(&hwmon->tz_list);
> > +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> > +	hwmon->device = hwmon_device_register(NULL);
> > +	if (IS_ERR(hwmon->device)) {
> > +		result = PTR_ERR(hwmon->device);
> > +		goto free_mem;
> > +	}
> > +	dev_set_drvdata(hwmon->device, hwmon);
> > +	result = device_create_file(hwmon->device, &dev_attr_name);
> > +	if (result)
> > +		goto free_mem;
> > +
> > + register_sys_interface:
> > +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> > +	if (!temp) {
> > +		result = -ENOMEM;
> > +		goto unregister_name;
> > +	}
> > +
> > +	temp->tz = tz;
> > +	hwmon->count++;
> > +
> > +	snprintf(temp->temp_input.name, sizeof(temp-
> > >temp_input.name),
> > +		 "temp%d_input", hwmon->count);
> > +	temp->temp_input.attr.attr.name = temp->temp_input.name;
> > +	temp->temp_input.attr.attr.mode = 0444;
> > +	temp->temp_input.attr.show = temp_input_show;
> > +	sysfs_attr_init(&temp->temp_input.attr.attr);
> > +	result = device_create_file(hwmon->device, &temp-
> > >temp_input.attr);
> > +	if (result)
> > +		goto free_temp_mem;
> > +
> > +	if (tz->ops->get_crit_temp) {
> > +		unsigned long temperature;
> > +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> > +			snprintf(temp->temp_crit.name,
> > +				 sizeof(temp->temp_crit.name),
> > +				"temp%d_crit", hwmon->count);
> > +			temp->temp_crit.attr.attr.name = temp-
> > >temp_crit.name;
> > +			temp->temp_crit.attr.attr.mode = 0444;
> > +			temp->temp_crit.attr.show = temp_crit_show;
> > +			sysfs_attr_init(&temp->temp_crit.attr.attr);
> > +			result = device_create_file(hwmon->device,
> > +						    &temp->temp_crit.attr);
> > +			if (result)
> > +				goto unregister_input;
> > +		}
> > +	}
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	if (new_hwmon_device)
> > +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> > +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	return 0;
> > +
> > + unregister_input:
> > +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > + free_temp_mem:
> > +	kfree(temp);
> > + unregister_name:
> > +	if (new_hwmon_device) {
> > +		device_remove_file(hwmon->device, &dev_attr_name);
> > +		hwmon_device_unregister(hwmon->device);
> > +	}
> > + free_mem:
> > +	if (new_hwmon_device)
> > +		kfree(hwmon);
> > +
> > +	return result;
> > +}
> > +
> > +static void
> > +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_device *hwmon;
> > +	struct thermal_hwmon_temp *temp;
> > +
> > +	hwmon = thermal_hwmon_lookup_by_type(tz);
> > +	if (unlikely(!hwmon)) {
> > +		/* Should never happen... */
> > +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> > +		return;
> > +	}
> > +
> > +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> > +	if (unlikely(!temp)) {
> > +		/* Should never happen... */
> > +		dev_dbg(&tz->device, "temperature input lookup
> > failed!\n");
> > +		return;
> > +	}
> > +
> > +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > +	if (tz->ops->get_crit_temp)
> > +		device_remove_file(hwmon->device, &temp-
> > >temp_crit.attr);
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_del(&temp->hwmon_node);
> > +	kfree(temp);
> > +	if (!list_empty(&hwmon->tz_list)) {
> > +		mutex_unlock(&thermal_list_lock);
> > +		return;
> > +	}
> > +	list_del(&hwmon->node);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	device_remove_file(hwmon->device, &dev_attr_name);
> > +	hwmon_device_unregister(hwmon->device);
> > +	kfree(hwmon);
> > +}
> > +#else
> > +static int
> > +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +	return 0;
> > +}
> > +
> > +static void
> > +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +}
> > +#endif
> > +
> > +/**
> > + * thermal_zone_bind_cooling_device - bind a cooling device to a thermal
> > zone
> > + * @tz:		thermal zone device
> > + * @trip:	indicates which trip point the cooling devices is
> > + *		associated with in this thermal zone.
> > + * @cdev:	thermal cooling device
> > + *
> > + * This function is usually called in the thermal zone device .bind callback.
> > + */
> > +int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> > +				     int trip,
> > +				     struct thermal_cooling_device *cdev,
> > +				     unsigned long upper, unsigned long lower)
> > +{
> > +	struct thermal_instance *dev;
> > +	struct thermal_instance *pos;
> > +	struct thermal_zone_device *pos1;
> > +	struct thermal_cooling_device *pos2;
> > +	unsigned long max_state;
> > +	int result;
> > +
> > +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> > +		return -EINVAL;
> > +
> > +	list_for_each_entry(pos1, &thermal_tz_list, node) {
> > +		if (pos1 == tz)
> > +			break;
> > +	}
> > +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> > +		if (pos2 == cdev)
> > +			break;
> > +	}
> > +
> > +	if (tz != pos1 || cdev != pos2)
> > +		return -EINVAL;
> > +
> > +	cdev->ops->get_max_state(cdev, &max_state);
> > +
> > +	/* lower default 0, upper default max_state */
> > +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> > +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> > +
> > +	if (lower > upper || upper > max_state)
> > +		return -EINVAL;
> > +
> > +	dev =
> > +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> > +	if (!dev)
> > +		return -ENOMEM;
> > +	dev->tz = tz;
> > +	dev->cdev = cdev;
> > +	dev->trip = trip;
> > +	dev->upper = upper;
> > +	dev->lower = lower;
> > +	dev->target = THERMAL_NO_TARGET;
> > +
> > +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> > +	if (result)
> > +		goto free_mem;
> > +
> > +	sprintf(dev->name, "cdev%d", dev->id);
> > +	result =
> > +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev-
> > >name);
> > +	if (result)
> > +		goto release_idr;
> > +
> > +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> > +	sysfs_attr_init(&dev->attr.attr);
> > +	dev->attr.attr.name = dev->attr_name;
> > +	dev->attr.attr.mode = 0444;
> > +	dev->attr.show = thermal_cooling_device_trip_point_show;
> > +	result = device_create_file(&tz->device, &dev->attr);
> > +	if (result)
> > +		goto remove_symbol_link;
> > +
> > +	mutex_lock(&tz->lock);
> > +	mutex_lock(&cdev->lock);
> > +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> > +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > +		result = -EEXIST;
> > +		break;
> > +	}
> > +	if (!result) {
> > +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> > +		list_add_tail(&dev->cdev_node, &cdev-
> > >thermal_instances);
> > +	}
> > +	mutex_unlock(&cdev->lock);
> > +	mutex_unlock(&tz->lock);
> > +
> > +	if (!result)
> > +		return 0;
> > +
> > +	device_remove_file(&tz->device, &dev->attr);
> > +remove_symbol_link:
> > +	sysfs_remove_link(&tz->device.kobj, dev->name);
> > +release_idr:
> > +	release_idr(&tz->idr, &tz->lock, dev->id);
> > +free_mem:
> > +	kfree(dev);
> > +	return result;
> > +}
> > +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> > +
> > +/**
> > + * thermal_zone_unbind_cooling_device - unbind a cooling device from a
> > thermal zone
> > + * @tz:		thermal zone device
> > + * @trip:	indicates which trip point the cooling devices is
> > + *		associated with in this thermal zone.
> > + * @cdev:	thermal cooling device
> > + *
> > + * This function is usually called in the thermal zone device .unbind callback.
> > + */
> > +int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> > +				       int trip,
> > +				       struct thermal_cooling_device *cdev)
> > +{
> > +	struct thermal_instance *pos, *next;
> > +
> > +	mutex_lock(&tz->lock);
> > +	mutex_lock(&cdev->lock);
> > +	list_for_each_entry_safe(pos, next, &tz->thermal_instances,
> > tz_node) {
> > +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > +			list_del(&pos->tz_node);
> > +			list_del(&pos->cdev_node);
> > +			mutex_unlock(&cdev->lock);
> > +			mutex_unlock(&tz->lock);
> > +			goto unbind;
> > +		}
> > +	}
> > +	mutex_unlock(&cdev->lock);
> > +	mutex_unlock(&tz->lock);
> > +
> > +	return -ENODEV;
> > +
> > +unbind:
> > +	device_remove_file(&tz->device, &pos->attr);
> > +	sysfs_remove_link(&tz->device.kobj, pos->name);
> > +	release_idr(&tz->idr, &tz->lock, pos->id);
> > +	kfree(pos);
> > +	return 0;
> > +}
> > +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> > +
> > +static void thermal_release(struct device *dev)
> > +{
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_cooling_device *cdev;
> > +
> > +	if (!strncmp(dev_name(dev), "thermal_zone",
> > +		     sizeof("thermal_zone") - 1)) {
> > +		tz = to_thermal_zone(dev);
> > +		kfree(tz);
> > +	} else {
> > +		cdev = to_cooling_device(dev);
> > +		kfree(cdev);
> > +	}
> > +}
> > +
> > +static struct class thermal_class = {
> > +	.name = "thermal",
> > +	.dev_release = thermal_release,
> > +};
> > +
> > +/**
> > + * thermal_cooling_device_register - register a new thermal cooling device
> > + * @type:	the thermal cooling device type.
> > + * @devdata:	device private data.
> > + * @ops:		standard thermal cooling devices callbacks.
> > + */
> > +struct thermal_cooling_device *
> > +thermal_cooling_device_register(char *type, void *devdata,
> > +				const struct thermal_cooling_device_ops
> > *ops)
> > +{
> > +	struct thermal_cooling_device *cdev;
> > +	int result;
> > +
> > +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> > +	    !ops->set_cur_state)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> > +	if (!cdev)
> > +		return ERR_PTR(-ENOMEM);
> > +
> > +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> > +	if (result) {
> > +		kfree(cdev);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	strcpy(cdev->type, type ? : "");
> > +	mutex_init(&cdev->lock);
> > +	INIT_LIST_HEAD(&cdev->thermal_instances);
> > +	cdev->ops = ops;
> > +	cdev->updated = true;
> > +	cdev->device.class = &thermal_class;
> > +	cdev->devdata = devdata;
> > +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> > +	result = device_register(&cdev->device);
> > +	if (result) {
> > +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev-
> > >id);
> > +		kfree(cdev);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	/* sys I/F */
> > +	if (type) {
> > +		result = device_create_file(&cdev->device,
> > &dev_attr_cdev_type);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +	result = device_create_file(&cdev->device, &dev_attr_max_state);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	/* Add 'this' new cdev to the global cdev list */
> > +	mutex_lock(&thermal_list_lock);
> > +	list_add(&cdev->node, &thermal_cdev_list);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	/* Update binding information for 'this' new cdev */
> > +	bind_cdev(cdev);
> > +
> > +	return cdev;
> > +
> > +unregister:
> > +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > +	device_unregister(&cdev->device);
> > +	return ERR_PTR(result);
> > +}
> > +EXPORT_SYMBOL(thermal_cooling_device_register);
> > +
> > +/**
> > + * thermal_cooling_device_unregister - removes the registered thermal
> > cooling device
> > + * @cdev:	the thermal cooling device to remove.
> > + *
> > + * thermal_cooling_device_unregister() must be called when the device is
> > no
> > + * longer needed.
> > + */
> > +void thermal_cooling_device_unregister(struct thermal_cooling_device
> > *cdev)
> > +{
> > +	int i;
> > +	const struct thermal_zone_params *tzp;
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_cooling_device *pos = NULL;
> > +
> > +	if (!cdev)
> > +		return;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(pos, &thermal_cdev_list, node)
> > +	    if (pos == cdev)
> > +		break;
> > +	if (pos != cdev) {
> > +		/* thermal cooling device not found */
> > +		mutex_unlock(&thermal_list_lock);
> > +		return;
> > +	}
> > +	list_del(&cdev->node);
> > +
> > +	/* Unbind all thermal zones associated with 'this' cdev */
> > +	list_for_each_entry(tz, &thermal_tz_list, node) {
> > +		if (tz->ops->unbind) {
> > +			tz->ops->unbind(tz, cdev);
> > +			continue;
> > +		}
> > +
> > +		if (!tz->tzp || !tz->tzp->tbp)
> > +			continue;
> > +
> > +		tzp = tz->tzp;
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev == cdev) {
> > +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > +				tzp->tbp[i].cdev = NULL;
> > +			}
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	if (cdev->type[0])
> > +		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> > +	device_remove_file(&cdev->device, &dev_attr_max_state);
> > +	device_remove_file(&cdev->device, &dev_attr_cur_state);
> > +
> > +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > +	device_unregister(&cdev->device);
> > +	return;
> > +}
> > +EXPORT_SYMBOL(thermal_cooling_device_unregister);
> > +
> > +void thermal_cdev_update(struct thermal_cooling_device *cdev)
> > +{
> > +	struct thermal_instance *instance;
> > +	unsigned long target = 0;
> > +
> > +	/* cooling device is updated*/
> > +	if (cdev->updated)
> > +		return;
> > +
> > +	mutex_lock(&cdev->lock);
> > +	/* Make sure cdev enters the deepest cooling state */
> > +	list_for_each_entry(instance, &cdev->thermal_instances,
> > cdev_node) {
> > +		if (instance->target == THERMAL_NO_TARGET)
> > +			continue;
> > +		if (instance->target > target)
> > +			target = instance->target;
> > +	}
> > +	mutex_unlock(&cdev->lock);
> > +	cdev->ops->set_cur_state(cdev, target);
> > +	cdev->updated = true;
> > +}
> > +EXPORT_SYMBOL(thermal_cdev_update);
> > +
> > +/**
> > + * notify_thermal_framework - Sensor drivers use this API to notify
> > framework
> > + * @tz:		thermal zone device
> > + * @trip:	indicates which trip point has been crossed
> > + *
> > + * This function handles the trip events from sensor drivers. It starts
> > + * throttling the cooling devices according to the policy configured.
> > + * For CRITICAL and HOT trip points, this notifies the respective drivers,
> > + * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> > + * The throttling policy is based on the configured platform data; if no
> > + * platform data is provided, this uses the step_wise throttling policy.
> > + */
> > +void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> > +{
> > +	handle_thermal_trip(tz, trip);
> > +}
> > +EXPORT_SYMBOL(notify_thermal_framework);
> > +
> > +/**
> > + * create_trip_attrs - create attributes for trip points
> > + * @tz:		the thermal zone device
> > + * @mask:	Writeable trip point bitmap.
> > + */
> > +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> > +{
> > +	int indx;
> > +	int size = sizeof(struct thermal_attr) * tz->trips;
> > +
> > +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> > +	if (!tz->trip_type_attrs)
> > +		return -ENOMEM;
> > +
> > +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> > +	if (!tz->trip_temp_attrs) {
> > +		kfree(tz->trip_type_attrs);
> > +		return -ENOMEM;
> > +	}
> > +
> > +	if (tz->ops->get_trip_hyst) {
> > +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> > +		if (!tz->trip_hyst_attrs) {
> > +			kfree(tz->trip_type_attrs);
> > +			kfree(tz->trip_temp_attrs);
> > +			return -ENOMEM;
> > +		}
> > +	}
> > +
> > +
> > +	for (indx = 0; indx < tz->trips; indx++) {
> > +		/* create trip type attribute */
> > +		snprintf(tz->trip_type_attrs[indx].name,
> > THERMAL_NAME_LENGTH,
> > +			 "trip_point_%d_type", indx);
> > +
> > +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> > +		tz->trip_type_attrs[indx].attr.attr.name =
> > +						tz-
> > >trip_type_attrs[indx].name;
> > +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> > +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> > +
> > +		device_create_file(&tz->device,
> > +				   &tz->trip_type_attrs[indx].attr);
> > +
> > +		/* create trip temp attribute */
> > +		snprintf(tz->trip_temp_attrs[indx].name,
> > THERMAL_NAME_LENGTH,
> > +			 "trip_point_%d_temp", indx);
> > +
> > +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> > +		tz->trip_temp_attrs[indx].attr.attr.name =
> > +						tz-
> > >trip_temp_attrs[indx].name;
> > +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> > +		tz->trip_temp_attrs[indx].attr.show =
> > trip_point_temp_show;
> > +		if (mask & (1 << indx)) {
> > +			tz->trip_temp_attrs[indx].attr.attr.mode |=
> > S_IWUSR;
> > +			tz->trip_temp_attrs[indx].attr.store =
> > +
> > 	trip_point_temp_store;
> > +		}
> > +
> > +		device_create_file(&tz->device,
> > +				   &tz->trip_temp_attrs[indx].attr);
> > +
> > +		/* create Optional trip hyst attribute */
> > +		if (!tz->ops->get_trip_hyst)
> > +			continue;
> > +		snprintf(tz->trip_hyst_attrs[indx].name,
> > THERMAL_NAME_LENGTH,
> > +			 "trip_point_%d_hyst", indx);
> > +
> > +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> > +		tz->trip_hyst_attrs[indx].attr.attr.name =
> > +					tz->trip_hyst_attrs[indx].name;
> > +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> > +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> > +		if (tz->ops->set_trip_hyst) {
> > +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> > +			tz->trip_hyst_attrs[indx].attr.store =
> > +					trip_point_hyst_store;
> > +		}
> > +
> > +		device_create_file(&tz->device,
> > +				   &tz->trip_hyst_attrs[indx].attr);
> > +	}
> > +	return 0;
> > +}
> > +
> > +static void remove_trip_attrs(struct thermal_zone_device *tz)
> > +{
> > +	int indx;
> > +
> > +	for (indx = 0; indx < tz->trips; indx++) {
> > +		device_remove_file(&tz->device,
> > +				   &tz->trip_type_attrs[indx].attr);
> > +		device_remove_file(&tz->device,
> > +				   &tz->trip_temp_attrs[indx].attr);
> > +		if (tz->ops->get_trip_hyst)
> > +			device_remove_file(&tz->device,
> > +				  &tz->trip_hyst_attrs[indx].attr);
> > +	}
> > +	kfree(tz->trip_type_attrs);
> > +	kfree(tz->trip_temp_attrs);
> > +	kfree(tz->trip_hyst_attrs);
> > +}
> > +
> > +/**
> > + * thermal_zone_device_register - register a new thermal zone device
> > + * @type:	the thermal zone device type
> > + * @trips:	the number of trip points the thermal zone support
> > + * @mask:	a bit string indicating the writeablility of trip points
> > + * @devdata:	private device data
> > + * @ops:	standard thermal zone device callbacks
> > + * @tzp:	thermal zone platform parameters
> > + * @passive_delay: number of milliseconds to wait between polls when
> > + *		   performing passive cooling
> > + * @polling_delay: number of milliseconds to wait between polls when
> > checking
> > + *		   whether trip points have been crossed (0 for interrupt
> > + *		   driven systems)
> > + *
> > + * thermal_zone_device_unregister() must be called when the device is no
> > + * longer needed. The passive cooling depends on the .get_trend() return
> > value.
> > + */
> > +struct thermal_zone_device *thermal_zone_device_register(const char
> > *type,
> > +	int trips, int mask, void *devdata,
> > +	const struct thermal_zone_device_ops *ops,
> > +	const struct thermal_zone_params *tzp,
> > +	int passive_delay, int polling_delay)
> > +{
> > +	struct thermal_zone_device *tz;
> > +	enum thermal_trip_type trip_type;
> > +	int result;
> > +	int count;
> > +	int passive = 0;
> > +
> > +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (!ops || !ops->get_temp)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (trips > 0 && !ops->get_trip_type)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> > +	if (!tz)
> > +		return ERR_PTR(-ENOMEM);
> > +
> > +	INIT_LIST_HEAD(&tz->thermal_instances);
> > +	idr_init(&tz->idr);
> > +	mutex_init(&tz->lock);
> > +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> > +	if (result) {
> > +		kfree(tz);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	strcpy(tz->type, type ? : "");
> > +	tz->ops = ops;
> > +	tz->tzp = tzp;
> > +	tz->device.class = &thermal_class;
> > +	tz->devdata = devdata;
> > +	tz->trips = trips;
> > +	tz->passive_delay = passive_delay;
> > +	tz->polling_delay = polling_delay;
> > +
> > +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> > +	result = device_register(&tz->device);
> > +	if (result) {
> > +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > +		kfree(tz);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	/* sys I/F */
> > +	if (type) {
> > +		result = device_create_file(&tz->device, &dev_attr_type);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +	result = device_create_file(&tz->device, &dev_attr_temp);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	if (ops->get_mode) {
> > +		result = device_create_file(&tz->device, &dev_attr_mode);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +	result = create_trip_attrs(tz, mask);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	for (count = 0; count < trips; count++) {
> > +		tz->ops->get_trip_type(tz, count, &trip_type);
> > +		if (trip_type == THERMAL_TRIP_PASSIVE)
> > +			passive = 1;
> > +	}
> > +
> > +	if (!passive) {
> > +		result = device_create_file(&tz->device, &dev_attr_passive);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> > +	if (result)
> > +		goto unregister;
> > +#endif
> > +	/* Create policy attribute */
> > +	result = device_create_file(&tz->device, &dev_attr_policy);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	/* Update 'this' zone's governor information */
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	if (tz->tzp)
> > +		tz->governor = __find_governor(tz->tzp->governor_name);
> > +	else
> > +		tz->governor =
> > __find_governor(DEFAULT_THERMAL_GOVERNOR);
> > +
> > +	mutex_unlock(&thermal_governor_lock);
> > +
> > +	result = thermal_add_hwmon_sysfs(tz);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_add_tail(&tz->node, &thermal_tz_list);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	/* Bind cooling devices for this zone */
> > +	bind_tz(tz);
> > +
> > +	INIT_DELAYED_WORK(&(tz->poll_queue),
> > thermal_zone_device_check);
> > +
> > +	thermal_zone_device_update(tz);
> > +
> > +	if (!result)
> > +		return tz;
> > +
> > +unregister:
> > +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > +	device_unregister(&tz->device);
> > +	return ERR_PTR(result);
> > +}
> > +EXPORT_SYMBOL(thermal_zone_device_register);
> > +
> > +/**
> > + * thermal_device_unregister - removes the registered thermal zone
> > device
> > + * @tz: the thermal zone device to remove
> > + */
> > +void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> > +{
> > +	int i;
> > +	const struct thermal_zone_params *tzp;
> > +	struct thermal_cooling_device *cdev;
> > +	struct thermal_zone_device *pos = NULL;
> > +
> > +	if (!tz)
> > +		return;
> > +
> > +	tzp = tz->tzp;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(pos, &thermal_tz_list, node)
> > +	    if (pos == tz)
> > +		break;
> > +	if (pos != tz) {
> > +		/* thermal zone device not found */
> > +		mutex_unlock(&thermal_list_lock);
> > +		return;
> > +	}
> > +	list_del(&tz->node);
> > +
> > +	/* Unbind all cdevs associated with 'this' thermal zone */
> > +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > +		if (tz->ops->unbind) {
> > +			tz->ops->unbind(tz, cdev);
> > +			continue;
> > +		}
> > +
> > +		if (!tzp || !tzp->tbp)
> > +			break;
> > +
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev == cdev) {
> > +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > +				tzp->tbp[i].cdev = NULL;
> > +			}
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	thermal_zone_device_set_polling(tz, 0);
> > +
> > +	if (tz->type[0])
> > +		device_remove_file(&tz->device, &dev_attr_type);
> > +	device_remove_file(&tz->device, &dev_attr_temp);
> > +	if (tz->ops->get_mode)
> > +		device_remove_file(&tz->device, &dev_attr_mode);
> > +	device_remove_file(&tz->device, &dev_attr_policy);
> > +	remove_trip_attrs(tz);
> > +	tz->governor = NULL;
> > +
> > +	thermal_remove_hwmon_sysfs(tz);
> > +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > +	idr_destroy(&tz->idr);
> > +	mutex_destroy(&tz->lock);
> > +	device_unregister(&tz->device);
> > +	return;
> > +}
> > +EXPORT_SYMBOL(thermal_zone_device_unregister);
> > +
> > +#ifdef CONFIG_NET
> > +static struct genl_family thermal_event_genl_family = {
> > +	.id = GENL_ID_GENERATE,
> > +	.name = THERMAL_GENL_FAMILY_NAME,
> > +	.version = THERMAL_GENL_VERSION,
> > +	.maxattr = THERMAL_GENL_ATTR_MAX,
> > +};
> > +
> > +static struct genl_multicast_group thermal_event_mcgrp = {
> > +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> > +};
> > +
> > +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> > +					enum events event)
> > +{
> > +	struct sk_buff *skb;
> > +	struct nlattr *attr;
> > +	struct thermal_genl_event *thermal_event;
> > +	void *msg_header;
> > +	int size;
> > +	int result;
> > +	static unsigned int thermal_event_seqnum;
> > +
> > +	if (!tz)
> > +		return -EINVAL;
> > +
> > +	/* allocate memory */
> > +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> > +	       nla_total_size(0);
> > +
> > +	skb = genlmsg_new(size, GFP_ATOMIC);
> > +	if (!skb)
> > +		return -ENOMEM;
> > +
> > +	/* add the genetlink message header */
> > +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> > +				 &thermal_event_genl_family, 0,
> > +				 THERMAL_GENL_CMD_EVENT);
> > +	if (!msg_header) {
> > +		nlmsg_free(skb);
> > +		return -ENOMEM;
> > +	}
> > +
> > +	/* fill the data */
> > +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> > +			   sizeof(struct thermal_genl_event));
> > +
> > +	if (!attr) {
> > +		nlmsg_free(skb);
> > +		return -EINVAL;
> > +	}
> > +
> > +	thermal_event = nla_data(attr);
> > +	if (!thermal_event) {
> > +		nlmsg_free(skb);
> > +		return -EINVAL;
> > +	}
> > +
> > +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> > +
> > +	thermal_event->orig = tz->id;
> > +	thermal_event->event = event;
> > +
> > +	/* send multicast genetlink message */
> > +	result = genlmsg_end(skb, msg_header);
> > +	if (result < 0) {
> > +		nlmsg_free(skb);
> > +		return result;
> > +	}
> > +
> > +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id,
> > GFP_ATOMIC);
> > +	if (result)
> > +		dev_err(&tz->device, "Failed to send netlink event:%d",
> > result);
> > +
> > +	return result;
> > +}
> > +EXPORT_SYMBOL(thermal_generate_netlink_event);
> > +
> > +static int genetlink_init(void)
> > +{
> > +	int result;
> > +
> > +	result = genl_register_family(&thermal_event_genl_family);
> > +	if (result)
> > +		return result;
> > +
> > +	result = genl_register_mc_group(&thermal_event_genl_family,
> > +					&thermal_event_mcgrp);
> > +	if (result)
> > +		genl_unregister_family(&thermal_event_genl_family);
> > +	return result;
> > +}
> > +
> > +static void genetlink_exit(void)
> > +{
> > +	genl_unregister_family(&thermal_event_genl_family);
> > +}
> > +#else /* !CONFIG_NET */
> > +static inline int genetlink_init(void) { return 0; }
> > +static inline void genetlink_exit(void) {}
> > +#endif /* !CONFIG_NET */
> > +
> > +static int __init thermal_init(void)
> > +{
> > +	int result = 0;
> > +
> > +	result = class_register(&thermal_class);
> > +	if (result) {
> > +		idr_destroy(&thermal_tz_idr);
> > +		idr_destroy(&thermal_cdev_idr);
> > +		mutex_destroy(&thermal_idr_lock);
> > +		mutex_destroy(&thermal_list_lock);
> > +		return result;
> > +	}
> > +	result = genetlink_init();
> > +	return result;
> > +}
> > +
> > +static void __exit thermal_exit(void)
> > +{
> > +	class_unregister(&thermal_class);
> > +	idr_destroy(&thermal_tz_idr);
> > +	idr_destroy(&thermal_cdev_idr);
> > +	mutex_destroy(&thermal_idr_lock);
> > +	mutex_destroy(&thermal_list_lock);
> > +	genetlink_exit();
> > +}
> > +
> > +fs_initcall(thermal_init);
> > +module_exit(thermal_exit);
> > diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
> > deleted file mode 100644
> > index 5b7863a..0000000
> > --- a/drivers/thermal/thermal_sys.c
> > +++ /dev/null
> > @@ -1,1888 +0,0 @@
> > -/*
> > - *  thermal.c - Generic Thermal Management Sysfs support.
> > - *
> > - *  Copyright (C) 2008 Intel Corp
> > - *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> > - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> > - *
> > - *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> > - *
> > - *  This program is free software; you can redistribute it and/or modify
> > - *  it under the terms of the GNU General Public License as published by
> > - *  the Free Software Foundation; version 2 of the License.
> > - *
> > - *  This program is distributed in the hope that it will be useful, but
> > - *  WITHOUT ANY WARRANTY; without even the implied warranty of
> > - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > GNU
> > - *  General Public License for more details.
> > - *
> > - *  You should have received a copy of the GNU General Public License along
> > - *  with this program; if not, write to the Free Software Foundation, Inc.,
> > - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> > - *
> > - *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> > - */
> > -
> > -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > -
> > -#include <linux/module.h>
> > -#include <linux/device.h>
> > -#include <linux/err.h>
> > -#include <linux/slab.h>
> > -#include <linux/kdev_t.h>
> > -#include <linux/idr.h>
> > -#include <linux/thermal.h>
> > -#include <linux/reboot.h>
> > -#include <net/netlink.h>
> > -#include <net/genetlink.h>
> > -
> > -#include "thermal_core.h"
> > -
> > -MODULE_AUTHOR("Zhang Rui");
> > -MODULE_DESCRIPTION("Generic thermal management sysfs support");
> > -MODULE_LICENSE("GPL");
> > -
> > -static DEFINE_IDR(thermal_tz_idr);
> > -static DEFINE_IDR(thermal_cdev_idr);
> > -static DEFINE_MUTEX(thermal_idr_lock);
> > -
> > -static LIST_HEAD(thermal_tz_list);
> > -static LIST_HEAD(thermal_cdev_list);
> > -static LIST_HEAD(thermal_governor_list);
> > -
> > -static DEFINE_MUTEX(thermal_list_lock);
> > -static DEFINE_MUTEX(thermal_governor_lock);
> > -
> > -static struct thermal_governor *__find_governor(const char *name)
> > -{
> > -	struct thermal_governor *pos;
> > -
> > -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> > -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> > -			return pos;
> > -
> > -	return NULL;
> > -}
> > -
> > -int thermal_register_governor(struct thermal_governor *governor)
> > -{
> > -	int err;
> > -	const char *name;
> > -	struct thermal_zone_device *pos;
> > -
> > -	if (!governor)
> > -		return -EINVAL;
> > -
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	err = -EBUSY;
> > -	if (__find_governor(governor->name) == NULL) {
> > -		err = 0;
> > -		list_add(&governor->governor_list,
> > &thermal_governor_list);
> > -	}
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	list_for_each_entry(pos, &thermal_tz_list, node) {
> > -		if (pos->governor)
> > -			continue;
> > -		if (pos->tzp)
> > -			name = pos->tzp->governor_name;
> > -		else
> > -			name = DEFAULT_THERMAL_GOVERNOR;
> > -		if (!strnicmp(name, governor->name,
> > THERMAL_NAME_LENGTH))
> > -			pos->governor = governor;
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -	mutex_unlock(&thermal_governor_lock);
> > -
> > -	return err;
> > -}
> > -EXPORT_SYMBOL_GPL(thermal_register_governor);
> > -
> > -void thermal_unregister_governor(struct thermal_governor *governor)
> > -{
> > -	struct thermal_zone_device *pos;
> > -
> > -	if (!governor)
> > -		return;
> > -
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	if (__find_governor(governor->name) == NULL)
> > -		goto exit;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	list_for_each_entry(pos, &thermal_tz_list, node) {
> > -		if (!strnicmp(pos->governor->name, governor->name,
> > -						THERMAL_NAME_LENGTH))
> > -			pos->governor = NULL;
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -	list_del(&governor->governor_list);
> > -exit:
> > -	mutex_unlock(&thermal_governor_lock);
> > -	return;
> > -}
> > -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> > -
> > -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> > -{
> > -	int ret;
> > -
> > -	if (lock)
> > -		mutex_lock(lock);
> > -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> > -	if (lock)
> > -		mutex_unlock(lock);
> > -	if (unlikely(ret < 0))
> > -		return ret;
> > -	*id = ret;
> > -	return 0;
> > -}
> > -
> > -static void release_idr(struct idr *idr, struct mutex *lock, int id)
> > -{
> > -	if (lock)
> > -		mutex_lock(lock);
> > -	idr_remove(idr, id);
> > -	if (lock)
> > -		mutex_unlock(lock);
> > -}
> > -
> > -int get_tz_trend(struct thermal_zone_device *tz, int trip)
> > -{
> > -	enum thermal_trend trend;
> > -
> > -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> > -		if (tz->temperature > tz->last_temperature)
> > -			trend = THERMAL_TREND_RAISING;
> > -		else if (tz->temperature < tz->last_temperature)
> > -			trend = THERMAL_TREND_DROPPING;
> > -		else
> > -			trend = THERMAL_TREND_STABLE;
> > -	}
> > -
> > -	return trend;
> > -}
> > -EXPORT_SYMBOL(get_tz_trend);
> > -
> > -struct thermal_instance *get_thermal_instance(struct
> > thermal_zone_device *tz,
> > -			struct thermal_cooling_device *cdev, int trip)
> > -{
> > -	struct thermal_instance *pos = NULL;
> > -	struct thermal_instance *target_instance = NULL;
> > -
> > -	mutex_lock(&tz->lock);
> > -	mutex_lock(&cdev->lock);
> > -
> > -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> > -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > -			target_instance = pos;
> > -			break;
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&cdev->lock);
> > -	mutex_unlock(&tz->lock);
> > -
> > -	return target_instance;
> > -}
> > -EXPORT_SYMBOL(get_thermal_instance);
> > -
> > -static void print_bind_err_msg(struct thermal_zone_device *tz,
> > -			struct thermal_cooling_device *cdev, int ret)
> > -{
> > -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> > -				tz->type, cdev->type, ret);
> > -}
> > -
> > -static void __bind(struct thermal_zone_device *tz, int mask,
> > -			struct thermal_cooling_device *cdev)
> > -{
> > -	int i, ret;
> > -
> > -	for (i = 0; i < tz->trips; i++) {
> > -		if (mask & (1 << i)) {
> > -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> > -					THERMAL_NO_LIMIT,
> > THERMAL_NO_LIMIT);
> > -			if (ret)
> > -				print_bind_err_msg(tz, cdev, ret);
> > -		}
> > -	}
> > -}
> > -
> > -static void __unbind(struct thermal_zone_device *tz, int mask,
> > -			struct thermal_cooling_device *cdev)
> > -{
> > -	int i;
> > -
> > -	for (i = 0; i < tz->trips; i++)
> > -		if (mask & (1 << i))
> > -			thermal_zone_unbind_cooling_device(tz, i, cdev);
> > -}
> > -
> > -static void bind_cdev(struct thermal_cooling_device *cdev)
> > -{
> > -	int i, ret;
> > -	const struct thermal_zone_params *tzp;
> > -	struct thermal_zone_device *pos = NULL;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	list_for_each_entry(pos, &thermal_tz_list, node) {
> > -		if (!pos->tzp && !pos->ops->bind)
> > -			continue;
> > -
> > -		if (!pos->tzp && pos->ops->bind) {
> > -			ret = pos->ops->bind(pos, cdev);
> > -			if (ret)
> > -				print_bind_err_msg(pos, cdev, ret);
> > -		}
> > -
> > -		tzp = pos->tzp;
> > -		if (!tzp || !tzp->tbp)
> > -			continue;
> > -
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > -				continue;
> > -			if (tzp->tbp[i].match(pos, cdev))
> > -				continue;
> > -			tzp->tbp[i].cdev = cdev;
> > -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -}
> > -
> > -static void bind_tz(struct thermal_zone_device *tz)
> > -{
> > -	int i, ret;
> > -	struct thermal_cooling_device *pos = NULL;
> > -	const struct thermal_zone_params *tzp = tz->tzp;
> > -
> > -	if (!tzp && !tz->ops->bind)
> > -		return;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	/* If there is no platform data, try to use ops->bind */
> > -	if (!tzp && tz->ops->bind) {
> > -		list_for_each_entry(pos, &thermal_cdev_list, node) {
> > -			ret = tz->ops->bind(tz, pos);
> > -			if (ret)
> > -				print_bind_err_msg(tz, pos, ret);
> > -		}
> > -		goto exit;
> > -	}
> > -
> > -	if (!tzp || !tzp->tbp)
> > -		goto exit;
> > -
> > -	list_for_each_entry(pos, &thermal_cdev_list, node) {
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > -				continue;
> > -			if (tzp->tbp[i].match(tz, pos))
> > -				continue;
> > -			tzp->tbp[i].cdev = pos;
> > -			__bind(tz, tzp->tbp[i].trip_mask, pos);
> > -		}
> > -	}
> > -exit:
> > -	mutex_unlock(&thermal_list_lock);
> > -}
> > -
> > -static void thermal_zone_device_set_polling(struct thermal_zone_device
> > *tz,
> > -					    int delay)
> > -{
> > -	if (delay > 1000)
> > -		mod_delayed_work(system_freezable_wq, &tz-
> > >poll_queue,
> > -				 round_jiffies(msecs_to_jiffies(delay)));
> > -	else if (delay)
> > -		mod_delayed_work(system_freezable_wq, &tz-
> > >poll_queue,
> > -				 msecs_to_jiffies(delay));
> > -	else
> > -		cancel_delayed_work(&tz->poll_queue);
> > -}
> > -
> > -static void monitor_thermal_zone(struct thermal_zone_device *tz)
> > -{
> > -	mutex_lock(&tz->lock);
> > -
> > -	if (tz->passive)
> > -		thermal_zone_device_set_polling(tz, tz->passive_delay);
> > -	else if (tz->polling_delay)
> > -		thermal_zone_device_set_polling(tz, tz->polling_delay);
> > -	else
> > -		thermal_zone_device_set_polling(tz, 0);
> > -
> > -	mutex_unlock(&tz->lock);
> > -}
> > -
> > -static void handle_non_critical_trips(struct thermal_zone_device *tz,
> > -			int trip, enum thermal_trip_type trip_type)
> > -{
> > -	if (tz->governor)
> > -		tz->governor->throttle(tz, trip);
> > -}
> > -
> > -static void handle_critical_trips(struct thermal_zone_device *tz,
> > -				int trip, enum thermal_trip_type trip_type)
> > -{
> > -	long trip_temp;
> > -
> > -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> > -
> > -	/* If we have not crossed the trip_temp, we do not care. */
> > -	if (tz->temperature < trip_temp)
> > -		return;
> > -
> > -	if (tz->ops->notify)
> > -		tz->ops->notify(tz, trip, trip_type);
> > -
> > -	if (trip_type == THERMAL_TRIP_CRITICAL) {
> > -		dev_emerg(&tz->device,
> > -			  "critical temperature reached(%d C),shutting
> > down\n",
> > -			  tz->temperature / 1000);
> > -		orderly_poweroff(true);
> > -	}
> > -}
> > -
> > -static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> > -{
> > -	enum thermal_trip_type type;
> > -
> > -	tz->ops->get_trip_type(tz, trip, &type);
> > -
> > -	if (type == THERMAL_TRIP_CRITICAL || type ==
> > THERMAL_TRIP_HOT)
> > -		handle_critical_trips(tz, trip, type);
> > -	else
> > -		handle_non_critical_trips(tz, trip, type);
> > -	/*
> > -	 * Alright, we handled this trip successfully.
> > -	 * So, start monitoring again.
> > -	 */
> > -	monitor_thermal_zone(tz);
> > -}
> > -
> > -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> > -				unsigned long *temp)
> > -{
> > -	int ret = 0;
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -	int count;
> > -	unsigned long crit_temp = -1UL;
> > -	enum thermal_trip_type type;
> > -#endif
> > -
> > -	mutex_lock(&tz->lock);
> > -
> > -	ret = tz->ops->get_temp(tz, temp);
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -	if (!tz->emul_temperature)
> > -		goto skip_emul;
> > -
> > -	for (count = 0; count < tz->trips; count++) {
> > -		ret = tz->ops->get_trip_type(tz, count, &type);
> > -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> > -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> > -			break;
> > -		}
> > -	}
> > -
> > -	if (ret)
> > -		goto skip_emul;
> > -
> > -	if (*temp < crit_temp)
> > -		*temp = tz->emul_temperature;
> > -skip_emul:
> > -#endif
> > -	mutex_unlock(&tz->lock);
> > -	return ret;
> > -}
> > -
> > -static void update_temperature(struct thermal_zone_device *tz)
> > -{
> > -	long temp;
> > -	int ret;
> > -
> > -	ret = thermal_zone_get_temp(tz, &temp);
> > -	if (ret) {
> > -		dev_warn(&tz->device, "failed to read out thermal zone
> > %d\n",
> > -			 tz->id);
> > -		return;
> > -	}
> > -
> > -	mutex_lock(&tz->lock);
> > -	tz->last_temperature = tz->temperature;
> > -	tz->temperature = temp;
> > -	mutex_unlock(&tz->lock);
> > -}
> > -
> > -void thermal_zone_device_update(struct thermal_zone_device *tz)
> > -{
> > -	int count;
> > -
> > -	update_temperature(tz);
> > -
> > -	for (count = 0; count < tz->trips; count++)
> > -		handle_thermal_trip(tz, count);
> > -}
> > -EXPORT_SYMBOL(thermal_zone_device_update);
> > -
> > -static void thermal_zone_device_check(struct work_struct *work)
> > -{
> > -	struct thermal_zone_device *tz = container_of(work, struct
> > -						      thermal_zone_device,
> > -						      poll_queue.work);
> > -	thermal_zone_device_update(tz);
> > -}
> > -
> > -/* sys I/F for thermal zone */
> > -
> > -#define to_thermal_zone(_dev) \
> > -	container_of(_dev, struct thermal_zone_device, device)
> > -
> > -static ssize_t
> > -type_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -
> > -	return sprintf(buf, "%s\n", tz->type);
> > -}
> > -
> > -static ssize_t
> > -temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	long temperature;
> > -	int ret;
> > -
> > -	ret = thermal_zone_get_temp(tz, &temperature);
> > -
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	enum thermal_device_mode mode;
> > -	int result;
> > -
> > -	if (!tz->ops->get_mode)
> > -		return -EPERM;
> > -
> > -	result = tz->ops->get_mode(tz, &mode);
> > -	if (result)
> > -		return result;
> > -
> > -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ?
> > "enabled"
> > -		       : "disabled");
> > -}
> > -
> > -static ssize_t
> > -mode_store(struct device *dev, struct device_attribute *attr,
> > -	   const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int result;
> > -
> > -	if (!tz->ops->set_mode)
> > -		return -EPERM;
> > -
> > -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> > -		result = tz->ops->set_mode(tz,
> > THERMAL_DEVICE_ENABLED);
> > -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> > -		result = tz->ops->set_mode(tz,
> > THERMAL_DEVICE_DISABLED);
> > -	else
> > -		result = -EINVAL;
> > -
> > -	if (result)
> > -		return result;
> > -
> > -	return count;
> > -}
> > -
> > -static ssize_t
> > -trip_point_type_show(struct device *dev, struct device_attribute *attr,
> > -		     char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	enum thermal_trip_type type;
> > -	int trip, result;
> > -
> > -	if (!tz->ops->get_trip_type)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> > -		return -EINVAL;
> > -
> > -	result = tz->ops->get_trip_type(tz, trip, &type);
> > -	if (result)
> > -		return result;
> > -
> > -	switch (type) {
> > -	case THERMAL_TRIP_CRITICAL:
> > -		return sprintf(buf, "critical\n");
> > -	case THERMAL_TRIP_HOT:
> > -		return sprintf(buf, "hot\n");
> > -	case THERMAL_TRIP_PASSIVE:
> > -		return sprintf(buf, "passive\n");
> > -	case THERMAL_TRIP_ACTIVE:
> > -		return sprintf(buf, "active\n");
> > -	default:
> > -		return sprintf(buf, "unknown\n");
> > -	}
> > -}
> > -
> > -static ssize_t
> > -trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> > -		     const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	unsigned long temperature;
> > -
> > -	if (!tz->ops->set_trip_temp)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > -		return -EINVAL;
> > -
> > -	if (kstrtoul(buf, 10, &temperature))
> > -		return -EINVAL;
> > -
> > -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> > -
> > -	return ret ? ret : count;
> > -}
> > -
> > -static ssize_t
> > -trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> > -		     char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	long temperature;
> > -
> > -	if (!tz->ops->get_trip_temp)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > -		return -EINVAL;
> > -
> > -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> > -
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> > -			const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	unsigned long temperature;
> > -
> > -	if (!tz->ops->set_trip_hyst)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > -		return -EINVAL;
> > -
> > -	if (kstrtoul(buf, 10, &temperature))
> > -		return -EINVAL;
> > -
> > -	/*
> > -	 * We are not doing any check on the 'temperature' value
> > -	 * here. The driver implementing 'set_trip_hyst' has to
> > -	 * take care of this.
> > -	 */
> > -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> > -
> > -	return ret ? ret : count;
> > -}
> > -
> > -static ssize_t
> > -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> > -			char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	unsigned long temperature;
> > -
> > -	if (!tz->ops->get_trip_hyst)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > -		return -EINVAL;
> > -
> > -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> > -
> > -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -passive_store(struct device *dev, struct device_attribute *attr,
> > -		    const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	struct thermal_cooling_device *cdev = NULL;
> > -	int state;
> > -
> > -	if (!sscanf(buf, "%d\n", &state))
> > -		return -EINVAL;
> > -
> > -	/* sanity check: values below 1000 millicelcius don't make sense
> > -	 * and can cause the system to go into a thermal heart attack
> > -	 */
> > -	if (state && state < 1000)
> > -		return -EINVAL;
> > -
> > -	if (state && !tz->forced_passive) {
> > -		mutex_lock(&thermal_list_lock);
> > -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > -			if (!strncmp("Processor", cdev->type,
> > -				     sizeof("Processor")))
> > -				thermal_zone_bind_cooling_device(tz,
> > -						THERMAL_TRIPS_NONE,
> > cdev,
> > -						THERMAL_NO_LIMIT,
> > -						THERMAL_NO_LIMIT);
> > -		}
> > -		mutex_unlock(&thermal_list_lock);
> > -		if (!tz->passive_delay)
> > -			tz->passive_delay = 1000;
> > -	} else if (!state && tz->forced_passive) {
> > -		mutex_lock(&thermal_list_lock);
> > -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > -			if (!strncmp("Processor", cdev->type,
> > -				     sizeof("Processor")))
> > -				thermal_zone_unbind_cooling_device(tz,
> > -
> > THERMAL_TRIPS_NONE,
> > -								   cdev);
> > -		}
> > -		mutex_unlock(&thermal_list_lock);
> > -		tz->passive_delay = 0;
> > -	}
> > -
> > -	tz->forced_passive = state;
> > -
> > -	thermal_zone_device_update(tz);
> > -
> > -	return count;
> > -}
> > -
> > -static ssize_t
> > -passive_show(struct device *dev, struct device_attribute *attr,
> > -		   char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -
> > -	return sprintf(buf, "%d\n", tz->forced_passive);
> > -}
> > -
> > -static ssize_t
> > -policy_store(struct device *dev, struct device_attribute *attr,
> > -		    const char *buf, size_t count)
> > -{
> > -	int ret = -EINVAL;
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	struct thermal_governor *gov;
> > -
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	gov = __find_governor(buf);
> > -	if (!gov)
> > -		goto exit;
> > -
> > -	tz->governor = gov;
> > -	ret = count;
> > -
> > -exit:
> > -	mutex_unlock(&thermal_governor_lock);
> > -	return ret;
> > -}
> > -
> > -static ssize_t
> > -policy_show(struct device *dev, struct device_attribute *devattr, char
> > *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -
> > -	return sprintf(buf, "%s\n", tz->governor->name);
> > -}
> > -
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -static ssize_t
> > -emul_temp_store(struct device *dev, struct device_attribute *attr,
> > -		     const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int ret = 0;
> > -	unsigned long temperature;
> > -
> > -	if (kstrtoul(buf, 10, &temperature))
> > -		return -EINVAL;
> > -
> > -	if (!tz->ops->set_emul_temp) {
> > -		mutex_lock(&tz->lock);
> > -		tz->emul_temperature = temperature;
> > -		mutex_unlock(&tz->lock);
> > -	} else {
> > -		ret = tz->ops->set_emul_temp(tz, temperature);
> > -	}
> > -
> > -	return ret ? ret : count;
> > -}
> > -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> > -#endif/*CONFIG_THERMAL_EMULATION*/
> > -
> > -static DEVICE_ATTR(type, 0444, type_show, NULL);
> > -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> > -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> > -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> > passive_store);
> > -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> > policy_store);
> > -
> > -/* sys I/F for cooling device */
> > -#define to_cooling_device(_dev)	\
> > -	container_of(_dev, struct thermal_cooling_device, device)
> > -
> > -static ssize_t
> > -thermal_cooling_device_type_show(struct device *dev,
> > -				 struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -
> > -	return sprintf(buf, "%s\n", cdev->type);
> > -}
> > -
> > -static ssize_t
> > -thermal_cooling_device_max_state_show(struct device *dev,
> > -				      struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -	unsigned long state;
> > -	int ret;
> > -
> > -	ret = cdev->ops->get_max_state(cdev, &state);
> > -	if (ret)
> > -		return ret;
> > -	return sprintf(buf, "%ld\n", state);
> > -}
> > -
> > -static ssize_t
> > -thermal_cooling_device_cur_state_show(struct device *dev,
> > -				      struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -	unsigned long state;
> > -	int ret;
> > -
> > -	ret = cdev->ops->get_cur_state(cdev, &state);
> > -	if (ret)
> > -		return ret;
> > -	return sprintf(buf, "%ld\n", state);
> > -}
> > -
> > -static ssize_t
> > -thermal_cooling_device_cur_state_store(struct device *dev,
> > -				       struct device_attribute *attr,
> > -				       const char *buf, size_t count)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -	unsigned long state;
> > -	int result;
> > -
> > -	if (!sscanf(buf, "%ld\n", &state))
> > -		return -EINVAL;
> > -
> > -	if ((long)state < 0)
> > -		return -EINVAL;
> > -
> > -	result = cdev->ops->set_cur_state(cdev, state);
> > -	if (result)
> > -		return result;
> > -	return count;
> > -}
> > -
> > -static struct device_attribute dev_attr_cdev_type =
> > -__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> > -static DEVICE_ATTR(max_state, 0444,
> > -		   thermal_cooling_device_max_state_show, NULL);
> > -static DEVICE_ATTR(cur_state, 0644,
> > -		   thermal_cooling_device_cur_state_show,
> > -		   thermal_cooling_device_cur_state_store);
> > -
> > -static ssize_t
> > -thermal_cooling_device_trip_point_show(struct device *dev,
> > -				       struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_instance *instance;
> > -
> > -	instance =
> > -	    container_of(attr, struct thermal_instance, attr);
> > -
> > -	if (instance->trip == THERMAL_TRIPS_NONE)
> > -		return sprintf(buf, "-1\n");
> > -	else
> > -		return sprintf(buf, "%d\n", instance->trip);
> > -}
> > -
> > -/* Device management */
> > -
> > -#if defined(CONFIG_THERMAL_HWMON)
> > -
> > -/* hwmon sys I/F */
> > -#include <linux/hwmon.h>
> > -
> > -/* thermal zone devices with the same type share one hwmon device */
> > -struct thermal_hwmon_device {
> > -	char type[THERMAL_NAME_LENGTH];
> > -	struct device *device;
> > -	int count;
> > -	struct list_head tz_list;
> > -	struct list_head node;
> > -};
> > -
> > -struct thermal_hwmon_attr {
> > -	struct device_attribute attr;
> > -	char name[16];
> > -};
> > -
> > -/* one temperature input for each thermal zone */
> > -struct thermal_hwmon_temp {
> > -	struct list_head hwmon_node;
> > -	struct thermal_zone_device *tz;
> > -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> > -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> > -};
> > -
> > -static LIST_HEAD(thermal_hwmon_list);
> > -
> > -static ssize_t
> > -name_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> > -	return sprintf(buf, "%s\n", hwmon->type);
> > -}
> > -static DEVICE_ATTR(name, 0444, name_show, NULL);
> > -
> > -static ssize_t
> > -temp_input_show(struct device *dev, struct device_attribute *attr, char
> > *buf)
> > -{
> > -	long temperature;
> > -	int ret;
> > -	struct thermal_hwmon_attr *hwmon_attr
> > -			= container_of(attr, struct thermal_hwmon_attr,
> > attr);
> > -	struct thermal_hwmon_temp *temp
> > -			= container_of(hwmon_attr, struct
> > thermal_hwmon_temp,
> > -				       temp_input);
> > -	struct thermal_zone_device *tz = temp->tz;
> > -
> > -	ret = thermal_zone_get_temp(tz, &temperature);
> > -
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -temp_crit_show(struct device *dev, struct device_attribute *attr,
> > -		char *buf)
> > -{
> > -	struct thermal_hwmon_attr *hwmon_attr
> > -			= container_of(attr, struct thermal_hwmon_attr,
> > attr);
> > -	struct thermal_hwmon_temp *temp
> > -			= container_of(hwmon_attr, struct
> > thermal_hwmon_temp,
> > -				       temp_crit);
> > -	struct thermal_zone_device *tz = temp->tz;
> > -	long temperature;
> > -	int ret;
> > -
> > -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -
> > -static struct thermal_hwmon_device *
> > -thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_device *hwmon;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> > -		if (!strcmp(hwmon->type, tz->type)) {
> > -			mutex_unlock(&thermal_list_lock);
> > -			return hwmon;
> > -		}
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	return NULL;
> > -}
> > -
> > -/* Find the temperature input matching a given thermal zone */
> > -static struct thermal_hwmon_temp *
> > -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device
> > *hwmon,
> > -			  const struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_temp *temp;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> > -		if (temp->tz == tz) {
> > -			mutex_unlock(&thermal_list_lock);
> > -			return temp;
> > -		}
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	return NULL;
> > -}
> > -
> > -static int
> > -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_device *hwmon;
> > -	struct thermal_hwmon_temp *temp;
> > -	int new_hwmon_device = 1;
> > -	int result;
> > -
> > -	hwmon = thermal_hwmon_lookup_by_type(tz);
> > -	if (hwmon) {
> > -		new_hwmon_device = 0;
> > -		goto register_sys_interface;
> > -	}
> > -
> > -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device),
> > GFP_KERNEL);
> > -	if (!hwmon)
> > -		return -ENOMEM;
> > -
> > -	INIT_LIST_HEAD(&hwmon->tz_list);
> > -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> > -	hwmon->device = hwmon_device_register(NULL);
> > -	if (IS_ERR(hwmon->device)) {
> > -		result = PTR_ERR(hwmon->device);
> > -		goto free_mem;
> > -	}
> > -	dev_set_drvdata(hwmon->device, hwmon);
> > -	result = device_create_file(hwmon->device, &dev_attr_name);
> > -	if (result)
> > -		goto free_mem;
> > -
> > - register_sys_interface:
> > -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> > -	if (!temp) {
> > -		result = -ENOMEM;
> > -		goto unregister_name;
> > -	}
> > -
> > -	temp->tz = tz;
> > -	hwmon->count++;
> > -
> > -	snprintf(temp->temp_input.name, sizeof(temp-
> > >temp_input.name),
> > -		 "temp%d_input", hwmon->count);
> > -	temp->temp_input.attr.attr.name = temp->temp_input.name;
> > -	temp->temp_input.attr.attr.mode = 0444;
> > -	temp->temp_input.attr.show = temp_input_show;
> > -	sysfs_attr_init(&temp->temp_input.attr.attr);
> > -	result = device_create_file(hwmon->device, &temp-
> > >temp_input.attr);
> > -	if (result)
> > -		goto free_temp_mem;
> > -
> > -	if (tz->ops->get_crit_temp) {
> > -		unsigned long temperature;
> > -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> > -			snprintf(temp->temp_crit.name,
> > -				 sizeof(temp->temp_crit.name),
> > -				"temp%d_crit", hwmon->count);
> > -			temp->temp_crit.attr.attr.name = temp-
> > >temp_crit.name;
> > -			temp->temp_crit.attr.attr.mode = 0444;
> > -			temp->temp_crit.attr.show = temp_crit_show;
> > -			sysfs_attr_init(&temp->temp_crit.attr.attr);
> > -			result = device_create_file(hwmon->device,
> > -						    &temp->temp_crit.attr);
> > -			if (result)
> > -				goto unregister_input;
> > -		}
> > -	}
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	if (new_hwmon_device)
> > -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> > -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	return 0;
> > -
> > - unregister_input:
> > -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > - free_temp_mem:
> > -	kfree(temp);
> > - unregister_name:
> > -	if (new_hwmon_device) {
> > -		device_remove_file(hwmon->device, &dev_attr_name);
> > -		hwmon_device_unregister(hwmon->device);
> > -	}
> > - free_mem:
> > -	if (new_hwmon_device)
> > -		kfree(hwmon);
> > -
> > -	return result;
> > -}
> > -
> > -static void
> > -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_device *hwmon;
> > -	struct thermal_hwmon_temp *temp;
> > -
> > -	hwmon = thermal_hwmon_lookup_by_type(tz);
> > -	if (unlikely(!hwmon)) {
> > -		/* Should never happen... */
> > -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> > -		return;
> > -	}
> > -
> > -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> > -	if (unlikely(!temp)) {
> > -		/* Should never happen... */
> > -		dev_dbg(&tz->device, "temperature input lookup
> > failed!\n");
> > -		return;
> > -	}
> > -
> > -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > -	if (tz->ops->get_crit_temp)
> > -		device_remove_file(hwmon->device, &temp-
> > >temp_crit.attr);
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_del(&temp->hwmon_node);
> > -	kfree(temp);
> > -	if (!list_empty(&hwmon->tz_list)) {
> > -		mutex_unlock(&thermal_list_lock);
> > -		return;
> > -	}
> > -	list_del(&hwmon->node);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	device_remove_file(hwmon->device, &dev_attr_name);
> > -	hwmon_device_unregister(hwmon->device);
> > -	kfree(hwmon);
> > -}
> > -#else
> > -static int
> > -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -	return 0;
> > -}
> > -
> > -static void
> > -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -}
> > -#endif
> > -
> > -/**
> > - * thermal_zone_bind_cooling_device - bind a cooling device to a thermal
> > zone
> > - * @tz:		thermal zone device
> > - * @trip:	indicates which trip point the cooling devices is
> > - *		associated with in this thermal zone.
> > - * @cdev:	thermal cooling device
> > - *
> > - * This function is usually called in the thermal zone device .bind callback.
> > - */
> > -int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> > -				     int trip,
> > -				     struct thermal_cooling_device *cdev,
> > -				     unsigned long upper, unsigned long lower)
> > -{
> > -	struct thermal_instance *dev;
> > -	struct thermal_instance *pos;
> > -	struct thermal_zone_device *pos1;
> > -	struct thermal_cooling_device *pos2;
> > -	unsigned long max_state;
> > -	int result;
> > -
> > -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> > -		return -EINVAL;
> > -
> > -	list_for_each_entry(pos1, &thermal_tz_list, node) {
> > -		if (pos1 == tz)
> > -			break;
> > -	}
> > -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> > -		if (pos2 == cdev)
> > -			break;
> > -	}
> > -
> > -	if (tz != pos1 || cdev != pos2)
> > -		return -EINVAL;
> > -
> > -	cdev->ops->get_max_state(cdev, &max_state);
> > -
> > -	/* lower default 0, upper default max_state */
> > -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> > -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> > -
> > -	if (lower > upper || upper > max_state)
> > -		return -EINVAL;
> > -
> > -	dev =
> > -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> > -	if (!dev)
> > -		return -ENOMEM;
> > -	dev->tz = tz;
> > -	dev->cdev = cdev;
> > -	dev->trip = trip;
> > -	dev->upper = upper;
> > -	dev->lower = lower;
> > -	dev->target = THERMAL_NO_TARGET;
> > -
> > -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> > -	if (result)
> > -		goto free_mem;
> > -
> > -	sprintf(dev->name, "cdev%d", dev->id);
> > -	result =
> > -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev-
> > >name);
> > -	if (result)
> > -		goto release_idr;
> > -
> > -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> > -	sysfs_attr_init(&dev->attr.attr);
> > -	dev->attr.attr.name = dev->attr_name;
> > -	dev->attr.attr.mode = 0444;
> > -	dev->attr.show = thermal_cooling_device_trip_point_show;
> > -	result = device_create_file(&tz->device, &dev->attr);
> > -	if (result)
> > -		goto remove_symbol_link;
> > -
> > -	mutex_lock(&tz->lock);
> > -	mutex_lock(&cdev->lock);
> > -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> > -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > -		result = -EEXIST;
> > -		break;
> > -	}
> > -	if (!result) {
> > -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> > -		list_add_tail(&dev->cdev_node, &cdev-
> > >thermal_instances);
> > -	}
> > -	mutex_unlock(&cdev->lock);
> > -	mutex_unlock(&tz->lock);
> > -
> > -	if (!result)
> > -		return 0;
> > -
> > -	device_remove_file(&tz->device, &dev->attr);
> > -remove_symbol_link:
> > -	sysfs_remove_link(&tz->device.kobj, dev->name);
> > -release_idr:
> > -	release_idr(&tz->idr, &tz->lock, dev->id);
> > -free_mem:
> > -	kfree(dev);
> > -	return result;
> > -}
> > -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> > -
> > -/**
> > - * thermal_zone_unbind_cooling_device - unbind a cooling device from a
> > thermal zone
> > - * @tz:		thermal zone device
> > - * @trip:	indicates which trip point the cooling devices is
> > - *		associated with in this thermal zone.
> > - * @cdev:	thermal cooling device
> > - *
> > - * This function is usually called in the thermal zone device .unbind callback.
> > - */
> > -int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> > -				       int trip,
> > -				       struct thermal_cooling_device *cdev)
> > -{
> > -	struct thermal_instance *pos, *next;
> > -
> > -	mutex_lock(&tz->lock);
> > -	mutex_lock(&cdev->lock);
> > -	list_for_each_entry_safe(pos, next, &tz->thermal_instances,
> > tz_node) {
> > -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > -			list_del(&pos->tz_node);
> > -			list_del(&pos->cdev_node);
> > -			mutex_unlock(&cdev->lock);
> > -			mutex_unlock(&tz->lock);
> > -			goto unbind;
> > -		}
> > -	}
> > -	mutex_unlock(&cdev->lock);
> > -	mutex_unlock(&tz->lock);
> > -
> > -	return -ENODEV;
> > -
> > -unbind:
> > -	device_remove_file(&tz->device, &pos->attr);
> > -	sysfs_remove_link(&tz->device.kobj, pos->name);
> > -	release_idr(&tz->idr, &tz->lock, pos->id);
> > -	kfree(pos);
> > -	return 0;
> > -}
> > -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> > -
> > -static void thermal_release(struct device *dev)
> > -{
> > -	struct thermal_zone_device *tz;
> > -	struct thermal_cooling_device *cdev;
> > -
> > -	if (!strncmp(dev_name(dev), "thermal_zone",
> > -		     sizeof("thermal_zone") - 1)) {
> > -		tz = to_thermal_zone(dev);
> > -		kfree(tz);
> > -	} else {
> > -		cdev = to_cooling_device(dev);
> > -		kfree(cdev);
> > -	}
> > -}
> > -
> > -static struct class thermal_class = {
> > -	.name = "thermal",
> > -	.dev_release = thermal_release,
> > -};
> > -
> > -/**
> > - * thermal_cooling_device_register - register a new thermal cooling device
> > - * @type:	the thermal cooling device type.
> > - * @devdata:	device private data.
> > - * @ops:		standard thermal cooling devices callbacks.
> > - */
> > -struct thermal_cooling_device *
> > -thermal_cooling_device_register(char *type, void *devdata,
> > -				const struct thermal_cooling_device_ops
> > *ops)
> > -{
> > -	struct thermal_cooling_device *cdev;
> > -	int result;
> > -
> > -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> > -	    !ops->set_cur_state)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> > -	if (!cdev)
> > -		return ERR_PTR(-ENOMEM);
> > -
> > -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> > -	if (result) {
> > -		kfree(cdev);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	strcpy(cdev->type, type ? : "");
> > -	mutex_init(&cdev->lock);
> > -	INIT_LIST_HEAD(&cdev->thermal_instances);
> > -	cdev->ops = ops;
> > -	cdev->updated = true;
> > -	cdev->device.class = &thermal_class;
> > -	cdev->devdata = devdata;
> > -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> > -	result = device_register(&cdev->device);
> > -	if (result) {
> > -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev-
> > >id);
> > -		kfree(cdev);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	/* sys I/F */
> > -	if (type) {
> > -		result = device_create_file(&cdev->device,
> > &dev_attr_cdev_type);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -	result = device_create_file(&cdev->device, &dev_attr_max_state);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	/* Add 'this' new cdev to the global cdev list */
> > -	mutex_lock(&thermal_list_lock);
> > -	list_add(&cdev->node, &thermal_cdev_list);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	/* Update binding information for 'this' new cdev */
> > -	bind_cdev(cdev);
> > -
> > -	return cdev;
> > -
> > -unregister:
> > -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > -	device_unregister(&cdev->device);
> > -	return ERR_PTR(result);
> > -}
> > -EXPORT_SYMBOL(thermal_cooling_device_register);
> > -
> > -/**
> > - * thermal_cooling_device_unregister - removes the registered thermal
> > cooling device
> > - * @cdev:	the thermal cooling device to remove.
> > - *
> > - * thermal_cooling_device_unregister() must be called when the device is
> > no
> > - * longer needed.
> > - */
> > -void thermal_cooling_device_unregister(struct thermal_cooling_device
> > *cdev)
> > -{
> > -	int i;
> > -	const struct thermal_zone_params *tzp;
> > -	struct thermal_zone_device *tz;
> > -	struct thermal_cooling_device *pos = NULL;
> > -
> > -	if (!cdev)
> > -		return;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(pos, &thermal_cdev_list, node)
> > -	    if (pos == cdev)
> > -		break;
> > -	if (pos != cdev) {
> > -		/* thermal cooling device not found */
> > -		mutex_unlock(&thermal_list_lock);
> > -		return;
> > -	}
> > -	list_del(&cdev->node);
> > -
> > -	/* Unbind all thermal zones associated with 'this' cdev */
> > -	list_for_each_entry(tz, &thermal_tz_list, node) {
> > -		if (tz->ops->unbind) {
> > -			tz->ops->unbind(tz, cdev);
> > -			continue;
> > -		}
> > -
> > -		if (!tz->tzp || !tz->tzp->tbp)
> > -			continue;
> > -
> > -		tzp = tz->tzp;
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev == cdev) {
> > -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > -				tzp->tbp[i].cdev = NULL;
> > -			}
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	if (cdev->type[0])
> > -		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> > -	device_remove_file(&cdev->device, &dev_attr_max_state);
> > -	device_remove_file(&cdev->device, &dev_attr_cur_state);
> > -
> > -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > -	device_unregister(&cdev->device);
> > -	return;
> > -}
> > -EXPORT_SYMBOL(thermal_cooling_device_unregister);
> > -
> > -void thermal_cdev_update(struct thermal_cooling_device *cdev)
> > -{
> > -	struct thermal_instance *instance;
> > -	unsigned long target = 0;
> > -
> > -	/* cooling device is updated*/
> > -	if (cdev->updated)
> > -		return;
> > -
> > -	mutex_lock(&cdev->lock);
> > -	/* Make sure cdev enters the deepest cooling state */
> > -	list_for_each_entry(instance, &cdev->thermal_instances,
> > cdev_node) {
> > -		if (instance->target == THERMAL_NO_TARGET)
> > -			continue;
> > -		if (instance->target > target)
> > -			target = instance->target;
> > -	}
> > -	mutex_unlock(&cdev->lock);
> > -	cdev->ops->set_cur_state(cdev, target);
> > -	cdev->updated = true;
> > -}
> > -EXPORT_SYMBOL(thermal_cdev_update);
> > -
> > -/**
> > - * notify_thermal_framework - Sensor drivers use this API to notify
> > framework
> > - * @tz:		thermal zone device
> > - * @trip:	indicates which trip point has been crossed
> > - *
> > - * This function handles the trip events from sensor drivers. It starts
> > - * throttling the cooling devices according to the policy configured.
> > - * For CRITICAL and HOT trip points, this notifies the respective drivers,
> > - * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> > - * The throttling policy is based on the configured platform data; if no
> > - * platform data is provided, this uses the step_wise throttling policy.
> > - */
> > -void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> > -{
> > -	handle_thermal_trip(tz, trip);
> > -}
> > -EXPORT_SYMBOL(notify_thermal_framework);
> > -
> > -/**
> > - * create_trip_attrs - create attributes for trip points
> > - * @tz:		the thermal zone device
> > - * @mask:	Writeable trip point bitmap.
> > - */
> > -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> > -{
> > -	int indx;
> > -	int size = sizeof(struct thermal_attr) * tz->trips;
> > -
> > -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> > -	if (!tz->trip_type_attrs)
> > -		return -ENOMEM;
> > -
> > -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> > -	if (!tz->trip_temp_attrs) {
> > -		kfree(tz->trip_type_attrs);
> > -		return -ENOMEM;
> > -	}
> > -
> > -	if (tz->ops->get_trip_hyst) {
> > -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> > -		if (!tz->trip_hyst_attrs) {
> > -			kfree(tz->trip_type_attrs);
> > -			kfree(tz->trip_temp_attrs);
> > -			return -ENOMEM;
> > -		}
> > -	}
> > -
> > -
> > -	for (indx = 0; indx < tz->trips; indx++) {
> > -		/* create trip type attribute */
> > -		snprintf(tz->trip_type_attrs[indx].name,
> > THERMAL_NAME_LENGTH,
> > -			 "trip_point_%d_type", indx);
> > -
> > -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> > -		tz->trip_type_attrs[indx].attr.attr.name =
> > -						tz-
> > >trip_type_attrs[indx].name;
> > -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> > -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> > -
> > -		device_create_file(&tz->device,
> > -				   &tz->trip_type_attrs[indx].attr);
> > -
> > -		/* create trip temp attribute */
> > -		snprintf(tz->trip_temp_attrs[indx].name,
> > THERMAL_NAME_LENGTH,
> > -			 "trip_point_%d_temp", indx);
> > -
> > -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> > -		tz->trip_temp_attrs[indx].attr.attr.name =
> > -						tz-
> > >trip_temp_attrs[indx].name;
> > -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> > -		tz->trip_temp_attrs[indx].attr.show =
> > trip_point_temp_show;
> > -		if (mask & (1 << indx)) {
> > -			tz->trip_temp_attrs[indx].attr.attr.mode |=
> > S_IWUSR;
> > -			tz->trip_temp_attrs[indx].attr.store =
> > -
> > 	trip_point_temp_store;
> > -		}
> > -
> > -		device_create_file(&tz->device,
> > -				   &tz->trip_temp_attrs[indx].attr);
> > -
> > -		/* create Optional trip hyst attribute */
> > -		if (!tz->ops->get_trip_hyst)
> > -			continue;
> > -		snprintf(tz->trip_hyst_attrs[indx].name,
> > THERMAL_NAME_LENGTH,
> > -			 "trip_point_%d_hyst", indx);
> > -
> > -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> > -		tz->trip_hyst_attrs[indx].attr.attr.name =
> > -					tz->trip_hyst_attrs[indx].name;
> > -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> > -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> > -		if (tz->ops->set_trip_hyst) {
> > -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> > -			tz->trip_hyst_attrs[indx].attr.store =
> > -					trip_point_hyst_store;
> > -		}
> > -
> > -		device_create_file(&tz->device,
> > -				   &tz->trip_hyst_attrs[indx].attr);
> > -	}
> > -	return 0;
> > -}
> > -
> > -static void remove_trip_attrs(struct thermal_zone_device *tz)
> > -{
> > -	int indx;
> > -
> > -	for (indx = 0; indx < tz->trips; indx++) {
> > -		device_remove_file(&tz->device,
> > -				   &tz->trip_type_attrs[indx].attr);
> > -		device_remove_file(&tz->device,
> > -				   &tz->trip_temp_attrs[indx].attr);
> > -		if (tz->ops->get_trip_hyst)
> > -			device_remove_file(&tz->device,
> > -				  &tz->trip_hyst_attrs[indx].attr);
> > -	}
> > -	kfree(tz->trip_type_attrs);
> > -	kfree(tz->trip_temp_attrs);
> > -	kfree(tz->trip_hyst_attrs);
> > -}
> > -
> > -/**
> > - * thermal_zone_device_register - register a new thermal zone device
> > - * @type:	the thermal zone device type
> > - * @trips:	the number of trip points the thermal zone support
> > - * @mask:	a bit string indicating the writeablility of trip points
> > - * @devdata:	private device data
> > - * @ops:	standard thermal zone device callbacks
> > - * @tzp:	thermal zone platform parameters
> > - * @passive_delay: number of milliseconds to wait between polls when
> > - *		   performing passive cooling
> > - * @polling_delay: number of milliseconds to wait between polls when
> > checking
> > - *		   whether trip points have been crossed (0 for interrupt
> > - *		   driven systems)
> > - *
> > - * thermal_zone_device_unregister() must be called when the device is no
> > - * longer needed. The passive cooling depends on the .get_trend() return
> > value.
> > - */
> > -struct thermal_zone_device *thermal_zone_device_register(const char
> > *type,
> > -	int trips, int mask, void *devdata,
> > -	const struct thermal_zone_device_ops *ops,
> > -	const struct thermal_zone_params *tzp,
> > -	int passive_delay, int polling_delay)
> > -{
> > -	struct thermal_zone_device *tz;
> > -	enum thermal_trip_type trip_type;
> > -	int result;
> > -	int count;
> > -	int passive = 0;
> > -
> > -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (!ops || !ops->get_temp)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (trips > 0 && !ops->get_trip_type)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> > -	if (!tz)
> > -		return ERR_PTR(-ENOMEM);
> > -
> > -	INIT_LIST_HEAD(&tz->thermal_instances);
> > -	idr_init(&tz->idr);
> > -	mutex_init(&tz->lock);
> > -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> > -	if (result) {
> > -		kfree(tz);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	strcpy(tz->type, type ? : "");
> > -	tz->ops = ops;
> > -	tz->tzp = tzp;
> > -	tz->device.class = &thermal_class;
> > -	tz->devdata = devdata;
> > -	tz->trips = trips;
> > -	tz->passive_delay = passive_delay;
> > -	tz->polling_delay = polling_delay;
> > -
> > -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> > -	result = device_register(&tz->device);
> > -	if (result) {
> > -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > -		kfree(tz);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	/* sys I/F */
> > -	if (type) {
> > -		result = device_create_file(&tz->device, &dev_attr_type);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -	result = device_create_file(&tz->device, &dev_attr_temp);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	if (ops->get_mode) {
> > -		result = device_create_file(&tz->device, &dev_attr_mode);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -	result = create_trip_attrs(tz, mask);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	for (count = 0; count < trips; count++) {
> > -		tz->ops->get_trip_type(tz, count, &trip_type);
> > -		if (trip_type == THERMAL_TRIP_PASSIVE)
> > -			passive = 1;
> > -	}
> > -
> > -	if (!passive) {
> > -		result = device_create_file(&tz->device, &dev_attr_passive);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> > -	if (result)
> > -		goto unregister;
> > -#endif
> > -	/* Create policy attribute */
> > -	result = device_create_file(&tz->device, &dev_attr_policy);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	/* Update 'this' zone's governor information */
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	if (tz->tzp)
> > -		tz->governor = __find_governor(tz->tzp->governor_name);
> > -	else
> > -		tz->governor =
> > __find_governor(DEFAULT_THERMAL_GOVERNOR);
> > -
> > -	mutex_unlock(&thermal_governor_lock);
> > -
> > -	result = thermal_add_hwmon_sysfs(tz);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_add_tail(&tz->node, &thermal_tz_list);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	/* Bind cooling devices for this zone */
> > -	bind_tz(tz);
> > -
> > -	INIT_DELAYED_WORK(&(tz->poll_queue),
> > thermal_zone_device_check);
> > -
> > -	thermal_zone_device_update(tz);
> > -
> > -	if (!result)
> > -		return tz;
> > -
> > -unregister:
> > -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > -	device_unregister(&tz->device);
> > -	return ERR_PTR(result);
> > -}
> > -EXPORT_SYMBOL(thermal_zone_device_register);
> > -
> > -/**
> > - * thermal_device_unregister - removes the registered thermal zone device
> > - * @tz: the thermal zone device to remove
> > - */
> > -void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> > -{
> > -	int i;
> > -	const struct thermal_zone_params *tzp;
> > -	struct thermal_cooling_device *cdev;
> > -	struct thermal_zone_device *pos = NULL;
> > -
> > -	if (!tz)
> > -		return;
> > -
> > -	tzp = tz->tzp;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(pos, &thermal_tz_list, node)
> > -	    if (pos == tz)
> > -		break;
> > -	if (pos != tz) {
> > -		/* thermal zone device not found */
> > -		mutex_unlock(&thermal_list_lock);
> > -		return;
> > -	}
> > -	list_del(&tz->node);
> > -
> > -	/* Unbind all cdevs associated with 'this' thermal zone */
> > -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > -		if (tz->ops->unbind) {
> > -			tz->ops->unbind(tz, cdev);
> > -			continue;
> > -		}
> > -
> > -		if (!tzp || !tzp->tbp)
> > -			break;
> > -
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev == cdev) {
> > -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > -				tzp->tbp[i].cdev = NULL;
> > -			}
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	thermal_zone_device_set_polling(tz, 0);
> > -
> > -	if (tz->type[0])
> > -		device_remove_file(&tz->device, &dev_attr_type);
> > -	device_remove_file(&tz->device, &dev_attr_temp);
> > -	if (tz->ops->get_mode)
> > -		device_remove_file(&tz->device, &dev_attr_mode);
> > -	device_remove_file(&tz->device, &dev_attr_policy);
> > -	remove_trip_attrs(tz);
> > -	tz->governor = NULL;
> > -
> > -	thermal_remove_hwmon_sysfs(tz);
> > -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > -	idr_destroy(&tz->idr);
> > -	mutex_destroy(&tz->lock);
> > -	device_unregister(&tz->device);
> > -	return;
> > -}
> > -EXPORT_SYMBOL(thermal_zone_device_unregister);
> > -
> > -#ifdef CONFIG_NET
> > -static struct genl_family thermal_event_genl_family = {
> > -	.id = GENL_ID_GENERATE,
> > -	.name = THERMAL_GENL_FAMILY_NAME,
> > -	.version = THERMAL_GENL_VERSION,
> > -	.maxattr = THERMAL_GENL_ATTR_MAX,
> > -};
> > -
> > -static struct genl_multicast_group thermal_event_mcgrp = {
> > -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> > -};
> > -
> > -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> > -					enum events event)
> > -{
> > -	struct sk_buff *skb;
> > -	struct nlattr *attr;
> > -	struct thermal_genl_event *thermal_event;
> > -	void *msg_header;
> > -	int size;
> > -	int result;
> > -	static unsigned int thermal_event_seqnum;
> > -
> > -	if (!tz)
> > -		return -EINVAL;
> > -
> > -	/* allocate memory */
> > -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> > -	       nla_total_size(0);
> > -
> > -	skb = genlmsg_new(size, GFP_ATOMIC);
> > -	if (!skb)
> > -		return -ENOMEM;
> > -
> > -	/* add the genetlink message header */
> > -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> > -				 &thermal_event_genl_family, 0,
> > -				 THERMAL_GENL_CMD_EVENT);
> > -	if (!msg_header) {
> > -		nlmsg_free(skb);
> > -		return -ENOMEM;
> > -	}
> > -
> > -	/* fill the data */
> > -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> > -			   sizeof(struct thermal_genl_event));
> > -
> > -	if (!attr) {
> > -		nlmsg_free(skb);
> > -		return -EINVAL;
> > -	}
> > -
> > -	thermal_event = nla_data(attr);
> > -	if (!thermal_event) {
> > -		nlmsg_free(skb);
> > -		return -EINVAL;
> > -	}
> > -
> > -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> > -
> > -	thermal_event->orig = tz->id;
> > -	thermal_event->event = event;
> > -
> > -	/* send multicast genetlink message */
> > -	result = genlmsg_end(skb, msg_header);
> > -	if (result < 0) {
> > -		nlmsg_free(skb);
> > -		return result;
> > -	}
> > -
> > -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id,
> > GFP_ATOMIC);
> > -	if (result)
> > -		dev_err(&tz->device, "Failed to send netlink event:%d",
> > result);
> > -
> > -	return result;
> > -}
> > -EXPORT_SYMBOL(thermal_generate_netlink_event);
> > -
> > -static int genetlink_init(void)
> > -{
> > -	int result;
> > -
> > -	result = genl_register_family(&thermal_event_genl_family);
> > -	if (result)
> > -		return result;
> > -
> > -	result = genl_register_mc_group(&thermal_event_genl_family,
> > -					&thermal_event_mcgrp);
> > -	if (result)
> > -		genl_unregister_family(&thermal_event_genl_family);
> > -	return result;
> > -}
> > -
> > -static void genetlink_exit(void)
> > -{
> > -	genl_unregister_family(&thermal_event_genl_family);
> > -}
> > -#else /* !CONFIG_NET */
> > -static inline int genetlink_init(void) { return 0; }
> > -static inline void genetlink_exit(void) {}
> > -#endif /* !CONFIG_NET */
> > -
> > -static int __init thermal_init(void)
> > -{
> > -	int result = 0;
> > -
> > -	result = class_register(&thermal_class);
> > -	if (result) {
> > -		idr_destroy(&thermal_tz_idr);
> > -		idr_destroy(&thermal_cdev_idr);
> > -		mutex_destroy(&thermal_idr_lock);
> > -		mutex_destroy(&thermal_list_lock);
> > -		return result;
> > -	}
> > -	result = genetlink_init();
> > -	return result;
> > -}
> > -
> > -static void __exit thermal_exit(void)
> > -{
> > -	class_unregister(&thermal_class);
> > -	idr_destroy(&thermal_tz_idr);
> > -	idr_destroy(&thermal_cdev_idr);
> > -	mutex_destroy(&thermal_idr_lock);
> > -	mutex_destroy(&thermal_list_lock);
> > -	genetlink_exit();
> > -}
> > -
> > -fs_initcall(thermal_init);
> > -module_exit(thermal_exit);
> > --
> > 1.7.9.5
> 

RE: [RFC PATCH 3/5] Thermal: build thermal governors into thermal_sys module

[Zhang Rui]

On Tue, 2013-03-26 at 10:53 -0600, R, Durgadoss wrote:
> Hi Rui,
> 
> > -----Original Message-----
> > From: Zhang, Rui
> > Sent: Tuesday, March 26, 2013 9:56 PM
> > To: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org
> > Cc: amit.daniel@samsung.com; R, Durgadoss; andi@lisas.de; Zhang, Rui
> > Subject: [RFC PATCH 3/5] Thermal: build thermal governors into thermal_sys
> > module
> > 
> > Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> > ---
> >  drivers/thermal/Makefile       |    6 +++---
> >  drivers/thermal/fair_share.c   |   15 ++-------------
> >  drivers/thermal/step_wise.c    |   16 ++--------------
> >  drivers/thermal/thermal_core.c |   36
> > ++++++++++++++++++++++++++++++++++--
> >  drivers/thermal/thermal_core.h |   25 +++++++++++++++++++++++++
> >  drivers/thermal/user_space.c   |   15 ++-------------
> >  include/linux/thermal.h        |    1 -
> >  7 files changed, 68 insertions(+), 46 deletions(-)
> > 
> > diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> > index b2009bd..b7fffc7 100644
> > --- a/drivers/thermal/Makefile
> > +++ b/drivers/thermal/Makefile
> > @@ -6,9 +6,9 @@ obj-$(CONFIG_THERMAL)		+= thermal_sys.o
> >  thermal_sys-y			+= thermal_core.o
> > 
> >  # governors
> > -obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> > -obj-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
> > -obj-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
> > +thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+=
> > fair_share.o
> > +thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
> > +thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+=
> > user_space.o
> > 
> >  # cpufreq cooling
> >  obj-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
> > diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c
> > index 792479f..944ba2f 100644
> > --- a/drivers/thermal/fair_share.c
> > +++ b/drivers/thermal/fair_share.c
> > @@ -22,9 +22,6 @@
> >   *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> >   */
> > 
> > -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > -
> > -#include <linux/module.h>
> >  #include <linux/thermal.h>
> > 
> >  #include "thermal_core.h"
> > @@ -111,23 +108,15 @@ static int fair_share_throttle(struct
> > thermal_zone_device *tz, int trip)
> >  static struct thermal_governor thermal_gov_fair_share = {
> >  	.name		= "fair_share",
> >  	.throttle	= fair_share_throttle,
> > -	.owner		= THIS_MODULE,
> >  };
> > 
> > -static int __init thermal_gov_fair_share_init(void)
> > +int thermal_gov_fair_share_register(void)
> >  {
> >  	return thermal_register_governor(&thermal_gov_fair_share);
> >  }
> > 
> > -static void __exit thermal_gov_fair_share_exit(void)
> > +void thermal_gov_fair_share_unregister(void)
> >  {
> >  	thermal_unregister_governor(&thermal_gov_fair_share);
> >  }
> > 
> > -/* This should load after thermal framework */
> > -fs_initcall(thermal_gov_fair_share_init);
> > -module_exit(thermal_gov_fair_share_exit);
> > -
> > -MODULE_AUTHOR("Durgadoss R");
> > -MODULE_DESCRIPTION("A simple weight based thermal throttling
> > governor");
> > -MODULE_LICENSE("GPL");
> > diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
> > index 407cde3..a6c9666 100644
> > --- a/drivers/thermal/step_wise.c
> > +++ b/drivers/thermal/step_wise.c
> > @@ -22,9 +22,6 @@
> >   *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> >   */
> > 
> > -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > -
> > -#include <linux/module.h>
> >  #include <linux/thermal.h>
> > 
> >  #include "thermal_core.h"
> > @@ -180,23 +177,14 @@ static int step_wise_throttle(struct
> > thermal_zone_device *tz, int trip)
> >  static struct thermal_governor thermal_gov_step_wise = {
> >  	.name		= "step_wise",
> >  	.throttle	= step_wise_throttle,
> > -	.owner		= THIS_MODULE,
> >  };
> > 
> > -static int __init thermal_gov_step_wise_init(void)
> > +int thermal_gov_step_wise_register(void)
> >  {
> >  	return thermal_register_governor(&thermal_gov_step_wise);
> >  }
> > 
> > -static void __exit thermal_gov_step_wise_exit(void)
> > +void thermal_gov_step_wise_unregister(void)
> >  {
> >  	thermal_unregister_governor(&thermal_gov_step_wise);
> >  }
> > -
> > -/* This should load after thermal framework */
> > -fs_initcall(thermal_gov_step_wise_init);
> > -module_exit(thermal_gov_step_wise_exit);
> > -
> > -MODULE_AUTHOR("Durgadoss R");
> > -MODULE_DESCRIPTION("A step-by-step thermal throttling governor");
> > -MODULE_LICENSE("GPL");
> > diff --git a/drivers/thermal/thermal_core.c
> > b/drivers/thermal/thermal_core.c
> > index 845ed6e..eac9745 100644
> > --- a/drivers/thermal/thermal_core.c
> > +++ b/drivers/thermal/thermal_core.c
> > @@ -1858,22 +1858,54 @@ static inline int genetlink_init(void) { return 0; }
> >  static inline void genetlink_exit(void) {}
> >  #endif /* !CONFIG_NET */
> > 
> > +static int __init thermal_register_governors(void)
> > +{
> > +	int result;
> > +
> > +	result = thermal_gov_step_wise_register();
> > +	if (result)
> 
> [Patches 1,2 are fine with me].
> 
thanks.

> A pr_err statement here, saying the registration failed,
> would help us a lot.
> 
yes. sounds reasonable to me.
Will add it in V2.

> > +		return result;
> > +
> > +	result = thermal_gov_fair_share_register();
> > +	if (result)
> > +		return result;
> > +
> > +	result = thermal_gov_user_space_register();
> 
> Same check + print statement for the other two as well.
> 
yep.

> > +
> > +	return result;
> > +}
> > +
> > +static void __exit thermal_unregister_governors(void)
> > +{
> > +	thermal_gov_step_wise_unregister();
> > +	thermal_gov_fair_share_unregister();
> > +	thermal_gov_user_space_unregister();
> > +}
> > +
> >  static int __init thermal_init(void)
> >  {
> > -	int result = 0;
> > +	int result;
> > +
> > +	result = thermal_register_governors();
> > +	if (result)
> > +		return result;
> > 
> >  	result = class_register(&thermal_class);
> >  	if (result)
> 
> Shouldn't we do thermal_unregister_governors here ?
> 
> >  		return result;
> > 
> >  	result = genetlink_init();
> > +	if (result)
> > +		class_unregister(&thermal_class);
> 
> Shouldn't we do thermal_unregister_governors here ?
> Probably a goto would make things simpler..
> 
IMO, these are not worth cleaning up because the driver will be unloaded
soon.

thanks,
rui
> > +
> >  	return result;
> >  }
> > 
> >  static void __exit thermal_exit(void)
> >  {
> > -	class_unregister(&thermal_class);
> >  	genetlink_exit();
> > +	class_unregister(&thermal_class);
> > +	thermal_unregister_governors();
> >  }
> > 
> >  fs_initcall(thermal_init);
> > diff --git a/drivers/thermal/thermal_core.h
> > b/drivers/thermal/thermal_core.h
> > index 0d3205a..f84ea0f 100644
> > --- a/drivers/thermal/thermal_core.h
> > +++ b/drivers/thermal/thermal_core.h
> > @@ -50,4 +50,29 @@ struct thermal_instance {
> >  	struct list_head cdev_node; /* node in cdev->thermal_instances */
> >  };
> > 
> > +
> > +#ifdef CONFIG_THERMAL_GOV_STEP_WISE
> > +extern int thermal_gov_step_wise_register(void);
> > +extern void thermal_gov_step_wise_unregister(void);
> > +#else
> > +static inline int thermal_gov_step_wise_register(void) { return 0; }
> > +static inline void thermal_gov_step_wise_unregister(void) {}
> > +#endif /* CONFIG_THERMAL_GOV_STEP_WISE */
> > +
> > +#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
> > +extern int thermal_gov_fair_share_register(void);
> > +extern void thermal_gov_fair_share_unregister(void);
> > +#else
> > +static inline int thermal_gov_fair_share_register(void) { return 0; }
> > +static inline void thermal_gov_fair_share_unregister(void) {}
> > +#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */
> > +
> > +#ifdef CONFIG_THERMAL_GOV_USER_SPACE
> > +extern int thermal_gov_user_space_register(void);
> > +extern void thermal_gov_user_space_unregister(void);
> > +#else
> > +static inline int thermal_gov_user_space_register(void) { return 0; }
> > +static inline void thermal_gov_user_space_unregister(void) {}
> > +#endif /* CONFIG_THERMAL_GOV_USER_SPACE */
> > +
> >  #endif /* __THERMAL_CORE_H__ */
> > diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
> > index 6bbb380..10adcdd 100644
> > --- a/drivers/thermal/user_space.c
> > +++ b/drivers/thermal/user_space.c
> > @@ -22,9 +22,6 @@
> >   *
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ~~~~~~~~~~~~~~~~
> >   */
> > 
> > -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > -
> > -#include <linux/module.h>
> >  #include <linux/thermal.h>
> > 
> >  #include "thermal_core.h"
> > @@ -46,23 +43,15 @@ static int notify_user_space(struct
> > thermal_zone_device *tz, int trip)
> >  static struct thermal_governor thermal_gov_user_space = {
> >  	.name		= "user_space",
> >  	.throttle	= notify_user_space,
> > -	.owner		= THIS_MODULE,
> >  };
> > 
> > -static int __init thermal_gov_user_space_init(void)
> > +int thermal_gov_user_space_register(void)
> >  {
> >  	return thermal_register_governor(&thermal_gov_user_space);
> >  }
> > 
> > -static void __exit thermal_gov_user_space_exit(void)
> > +void thermal_gov_user_space_unregister(void)
> >  {
> >  	thermal_unregister_governor(&thermal_gov_user_space);
> >  }
> > 
> > -/* This should load after thermal framework */
> > -fs_initcall(thermal_gov_user_space_init);
> > -module_exit(thermal_gov_user_space_exit);
> > -
> > -MODULE_AUTHOR("Durgadoss R");
> > -MODULE_DESCRIPTION("A user space Thermal notifier");
> > -MODULE_LICENSE("GPL");
> > diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> > index f0bd7f9..2eeec01 100644
> > --- a/include/linux/thermal.h
> > +++ b/include/linux/thermal.h
> > @@ -184,7 +184,6 @@ struct thermal_governor {
> >  	char name[THERMAL_NAME_LENGTH];
> >  	int (*throttle)(struct thermal_zone_device *tz, int trip);
> >  	struct list_head	governor_list;
> > -	struct module		*owner;
> >  };
> > 
> >  /* Structure that holds binding parameters for a zone */
> > --
> > 1.7.9.5
> 

Re: [RFC,1/5] Thermal: rename thermal_sys.c to thermal_core.c

[Eduardo Valentin]

Hi Rui,

A side note:
I'd really appreciate if you could copy on your patches on 
drivers/thermal/. I had some issues with TI server and got un subscribed 
from linux-pm. Now I will try to catch up any way,

Some comments.

On 26-03-2013 12:26, Zhang Rui wrote:
> No functional change in this patch.
>

Just a better description would also help on code version control.

> Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Apart from minor comments, I agreed with this change. So feel free to 
add my:

Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>

>
> ---
> drivers/thermal/Makefile       |    1 +
>   drivers/thermal/thermal_core.c | 1888 ++++++++++++++++++++++++++++++++++++++++
>   drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------

When sending renames, use git format-patch --find-renames, it makes a 
better summary of what you have done, specially if you have changed 
something in the file while renaming.

>   3 files changed, 1889 insertions(+), 1888 deletions(-)
>   create mode 100644 drivers/thermal/thermal_core.c
>   delete mode 100644 drivers/thermal/thermal_sys.c
>
> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> index d3a2b38..b2009bd 100644
> --- a/drivers/thermal/Makefile
> +++ b/drivers/thermal/Makefile
> @@ -3,6 +3,7 @@
>   #
>
>   obj-$(CONFIG_THERMAL)		+= thermal_sys.o

I know this is for fixing the annoying bug with fan max speed. But while 
still here, do you think 'thermal_sys' is a good name for thermal 
framework driver? Maybe just 'thermal' would suffice?

> +thermal_sys-y			+= thermal_core.o
>
>   # governors
>   obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> new file mode 100644
> index 0000000..5b7863a
> --- /dev/null
> +++ b/drivers/thermal/thermal_core.c
> @@ -0,0 +1,1888 @@
> +/*
> + *  thermal.c - Generic Thermal Management Sysfs support.
> + *
> + *  Copyright (C) 2008 Intel Corp
> + *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> + *
> + *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + *
> + *  This program is free software; you can redistribute it and/or modify
> + *  it under the terms of the GNU General Public License as published by
> + *  the Free Software Foundation; version 2 of the License.
> + *
> + *  This program is distributed in the hope that it will be useful, but
> + *  WITHOUT ANY WARRANTY; without even the implied warranty of
> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> + *  General Public License for more details.
> + *
> + *  You should have received a copy of the GNU General Public License along
> + *  with this program; if not, write to the Free Software Foundation, Inc.,
> + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> + *
> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + */
> +
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +
> +#include <linux/module.h>
> +#include <linux/device.h>
> +#include <linux/err.h>
> +#include <linux/slab.h>
> +#include <linux/kdev_t.h>
> +#include <linux/idr.h>
> +#include <linux/thermal.h>
> +#include <linux/reboot.h>
> +#include <net/netlink.h>
> +#include <net/genetlink.h>
> +
> +#include "thermal_core.h"
> +
> +MODULE_AUTHOR("Zhang Rui");
> +MODULE_DESCRIPTION("Generic thermal management sysfs support");
> +MODULE_LICENSE("GPL");
> +
> +static DEFINE_IDR(thermal_tz_idr);
> +static DEFINE_IDR(thermal_cdev_idr);
> +static DEFINE_MUTEX(thermal_idr_lock);
> +
> +static LIST_HEAD(thermal_tz_list);
> +static LIST_HEAD(thermal_cdev_list);
> +static LIST_HEAD(thermal_governor_list);
> +
> +static DEFINE_MUTEX(thermal_list_lock);
> +static DEFINE_MUTEX(thermal_governor_lock);
> +
> +static struct thermal_governor *__find_governor(const char *name)
> +{
> +	struct thermal_governor *pos;
> +
> +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> +			return pos;
> +
> +	return NULL;
> +}
> +
> +int thermal_register_governor(struct thermal_governor *governor)
> +{
> +	int err;
> +	const char *name;
> +	struct thermal_zone_device *pos;
> +
> +	if (!governor)
> +		return -EINVAL;
> +
> +	mutex_lock(&thermal_governor_lock);
> +
> +	err = -EBUSY;
> +	if (__find_governor(governor->name) == NULL) {
> +		err = 0;
> +		list_add(&governor->governor_list, &thermal_governor_list);
> +	}
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> +		if (pos->governor)
> +			continue;
> +		if (pos->tzp)
> +			name = pos->tzp->governor_name;
> +		else
> +			name = DEFAULT_THERMAL_GOVERNOR;
> +		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
> +			pos->governor = governor;
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +	mutex_unlock(&thermal_governor_lock);
> +
> +	return err;
> +}
> +EXPORT_SYMBOL_GPL(thermal_register_governor);
> +
> +void thermal_unregister_governor(struct thermal_governor *governor)
> +{
> +	struct thermal_zone_device *pos;
> +
> +	if (!governor)
> +		return;
> +
> +	mutex_lock(&thermal_governor_lock);
> +
> +	if (__find_governor(governor->name) == NULL)
> +		goto exit;
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> +		if (!strnicmp(pos->governor->name, governor->name,
> +						THERMAL_NAME_LENGTH))
> +			pos->governor = NULL;
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +	list_del(&governor->governor_list);
> +exit:
> +	mutex_unlock(&thermal_governor_lock);
> +	return;
> +}
> +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> +
> +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> +{
> +	int ret;
> +
> +	if (lock)
> +		mutex_lock(lock);
> +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> +	if (lock)
> +		mutex_unlock(lock);
> +	if (unlikely(ret < 0))
> +		return ret;
> +	*id = ret;
> +	return 0;
> +}
> +
> +static void release_idr(struct idr *idr, struct mutex *lock, int id)
> +{
> +	if (lock)
> +		mutex_lock(lock);
> +	idr_remove(idr, id);
> +	if (lock)
> +		mutex_unlock(lock);
> +}
> +
> +int get_tz_trend(struct thermal_zone_device *tz, int trip)
> +{
> +	enum thermal_trend trend;
> +
> +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> +		if (tz->temperature > tz->last_temperature)
> +			trend = THERMAL_TREND_RAISING;
> +		else if (tz->temperature < tz->last_temperature)
> +			trend = THERMAL_TREND_DROPPING;
> +		else
> +			trend = THERMAL_TREND_STABLE;
> +	}
> +
> +	return trend;
> +}
> +EXPORT_SYMBOL(get_tz_trend);
> +
> +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
> +			struct thermal_cooling_device *cdev, int trip)
> +{
> +	struct thermal_instance *pos = NULL;
> +	struct thermal_instance *target_instance = NULL;
> +
> +	mutex_lock(&tz->lock);
> +	mutex_lock(&cdev->lock);
> +
> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> +			target_instance = pos;
> +			break;
> +		}
> +	}
> +
> +	mutex_unlock(&cdev->lock);
> +	mutex_unlock(&tz->lock);
> +
> +	return target_instance;
> +}
> +EXPORT_SYMBOL(get_thermal_instance);
> +
> +static void print_bind_err_msg(struct thermal_zone_device *tz,
> +			struct thermal_cooling_device *cdev, int ret)
> +{
> +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> +				tz->type, cdev->type, ret);
> +}
> +
> +static void __bind(struct thermal_zone_device *tz, int mask,
> +			struct thermal_cooling_device *cdev)
> +{
> +	int i, ret;
> +
> +	for (i = 0; i < tz->trips; i++) {
> +		if (mask & (1 << i)) {
> +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> +					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
> +			if (ret)
> +				print_bind_err_msg(tz, cdev, ret);
> +		}
> +	}
> +}
> +
> +static void __unbind(struct thermal_zone_device *tz, int mask,
> +			struct thermal_cooling_device *cdev)
> +{
> +	int i;
> +
> +	for (i = 0; i < tz->trips; i++)
> +		if (mask & (1 << i))
> +			thermal_zone_unbind_cooling_device(tz, i, cdev);
> +}
> +
> +static void bind_cdev(struct thermal_cooling_device *cdev)
> +{
> +	int i, ret;
> +	const struct thermal_zone_params *tzp;
> +	struct thermal_zone_device *pos = NULL;
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> +		if (!pos->tzp && !pos->ops->bind)
> +			continue;
> +
> +		if (!pos->tzp && pos->ops->bind) {
> +			ret = pos->ops->bind(pos, cdev);
> +			if (ret)
> +				print_bind_err_msg(pos, cdev, ret);
> +		}
> +
> +		tzp = pos->tzp;
> +		if (!tzp || !tzp->tbp)
> +			continue;
> +
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> +				continue;
> +			if (tzp->tbp[i].match(pos, cdev))
> +				continue;
> +			tzp->tbp[i].cdev = cdev;
> +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> +		}
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +}
> +
> +static void bind_tz(struct thermal_zone_device *tz)
> +{
> +	int i, ret;
> +	struct thermal_cooling_device *pos = NULL;
> +	const struct thermal_zone_params *tzp = tz->tzp;
> +
> +	if (!tzp && !tz->ops->bind)
> +		return;
> +
> +	mutex_lock(&thermal_list_lock);
> +
> +	/* If there is no platform data, try to use ops->bind */
> +	if (!tzp && tz->ops->bind) {
> +		list_for_each_entry(pos, &thermal_cdev_list, node) {
> +			ret = tz->ops->bind(tz, pos);
> +			if (ret)
> +				print_bind_err_msg(tz, pos, ret);
> +		}
> +		goto exit;
> +	}
> +
> +	if (!tzp || !tzp->tbp)
> +		goto exit;
> +
> +	list_for_each_entry(pos, &thermal_cdev_list, node) {
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> +				continue;
> +			if (tzp->tbp[i].match(tz, pos))
> +				continue;
> +			tzp->tbp[i].cdev = pos;
> +			__bind(tz, tzp->tbp[i].trip_mask, pos);
> +		}
> +	}
> +exit:
> +	mutex_unlock(&thermal_list_lock);
> +}
> +
> +static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
> +					    int delay)
> +{
> +	if (delay > 1000)
> +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> +				 round_jiffies(msecs_to_jiffies(delay)));
> +	else if (delay)
> +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> +				 msecs_to_jiffies(delay));
> +	else
> +		cancel_delayed_work(&tz->poll_queue);
> +}
> +
> +static void monitor_thermal_zone(struct thermal_zone_device *tz)
> +{
> +	mutex_lock(&tz->lock);
> +
> +	if (tz->passive)
> +		thermal_zone_device_set_polling(tz, tz->passive_delay);
> +	else if (tz->polling_delay)
> +		thermal_zone_device_set_polling(tz, tz->polling_delay);
> +	else
> +		thermal_zone_device_set_polling(tz, 0);
> +
> +	mutex_unlock(&tz->lock);
> +}
> +
> +static void handle_non_critical_trips(struct thermal_zone_device *tz,
> +			int trip, enum thermal_trip_type trip_type)
> +{
> +	if (tz->governor)
> +		tz->governor->throttle(tz, trip);
> +}
> +
> +static void handle_critical_trips(struct thermal_zone_device *tz,
> +				int trip, enum thermal_trip_type trip_type)
> +{
> +	long trip_temp;
> +
> +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> +
> +	/* If we have not crossed the trip_temp, we do not care. */
> +	if (tz->temperature < trip_temp)
> +		return;
> +
> +	if (tz->ops->notify)
> +		tz->ops->notify(tz, trip, trip_type);
> +
> +	if (trip_type == THERMAL_TRIP_CRITICAL) {
> +		dev_emerg(&tz->device,
> +			  "critical temperature reached(%d C),shutting down\n",
> +			  tz->temperature / 1000);
> +		orderly_poweroff(true);
> +	}
> +}
> +
> +static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> +{
> +	enum thermal_trip_type type;
> +
> +	tz->ops->get_trip_type(tz, trip, &type);
> +
> +	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
> +		handle_critical_trips(tz, trip, type);
> +	else
> +		handle_non_critical_trips(tz, trip, type);
> +	/*
> +	 * Alright, we handled this trip successfully.
> +	 * So, start monitoring again.
> +	 */
> +	monitor_thermal_zone(tz);
> +}
> +
> +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> +				unsigned long *temp)
> +{
> +	int ret = 0;
> +#ifdef CONFIG_THERMAL_EMULATION
> +	int count;
> +	unsigned long crit_temp = -1UL;
> +	enum thermal_trip_type type;
> +#endif
> +
> +	mutex_lock(&tz->lock);
> +
> +	ret = tz->ops->get_temp(tz, temp);
> +#ifdef CONFIG_THERMAL_EMULATION
> +	if (!tz->emul_temperature)
> +		goto skip_emul;
> +
> +	for (count = 0; count < tz->trips; count++) {
> +		ret = tz->ops->get_trip_type(tz, count, &type);
> +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> +			break;
> +		}
> +	}
> +
> +	if (ret)
> +		goto skip_emul;
> +
> +	if (*temp < crit_temp)
> +		*temp = tz->emul_temperature;
> +skip_emul:
> +#endif
> +	mutex_unlock(&tz->lock);
> +	return ret;
> +}
> +
> +static void update_temperature(struct thermal_zone_device *tz)
> +{
> +	long temp;
> +	int ret;
> +
> +	ret = thermal_zone_get_temp(tz, &temp);
> +	if (ret) {
> +		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
> +			 tz->id);
> +		return;
> +	}
> +
> +	mutex_lock(&tz->lock);
> +	tz->last_temperature = tz->temperature;
> +	tz->temperature = temp;
> +	mutex_unlock(&tz->lock);
> +}
> +
> +void thermal_zone_device_update(struct thermal_zone_device *tz)
> +{
> +	int count;
> +
> +	update_temperature(tz);
> +
> +	for (count = 0; count < tz->trips; count++)
> +		handle_thermal_trip(tz, count);
> +}
> +EXPORT_SYMBOL(thermal_zone_device_update);
> +
> +static void thermal_zone_device_check(struct work_struct *work)
> +{
> +	struct thermal_zone_device *tz = container_of(work, struct
> +						      thermal_zone_device,
> +						      poll_queue.work);
> +	thermal_zone_device_update(tz);
> +}
> +
> +/* sys I/F for thermal zone */
> +
> +#define to_thermal_zone(_dev) \
> +	container_of(_dev, struct thermal_zone_device, device)
> +
> +static ssize_t
> +type_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +
> +	return sprintf(buf, "%s\n", tz->type);
> +}
> +
> +static ssize_t
> +temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	long temperature;
> +	int ret;
> +
> +	ret = thermal_zone_get_temp(tz, &temperature);
> +
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	enum thermal_device_mode mode;
> +	int result;
> +
> +	if (!tz->ops->get_mode)
> +		return -EPERM;
> +
> +	result = tz->ops->get_mode(tz, &mode);
> +	if (result)
> +		return result;
> +
> +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
> +		       : "disabled");
> +}
> +
> +static ssize_t
> +mode_store(struct device *dev, struct device_attribute *attr,
> +	   const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int result;
> +
> +	if (!tz->ops->set_mode)
> +		return -EPERM;
> +
> +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
> +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
> +	else
> +		result = -EINVAL;
> +
> +	if (result)
> +		return result;
> +
> +	return count;
> +}
> +
> +static ssize_t
> +trip_point_type_show(struct device *dev, struct device_attribute *attr,
> +		     char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	enum thermal_trip_type type;
> +	int trip, result;
> +
> +	if (!tz->ops->get_trip_type)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> +		return -EINVAL;
> +
> +	result = tz->ops->get_trip_type(tz, trip, &type);
> +	if (result)
> +		return result;
> +
> +	switch (type) {
> +	case THERMAL_TRIP_CRITICAL:
> +		return sprintf(buf, "critical\n");
> +	case THERMAL_TRIP_HOT:
> +		return sprintf(buf, "hot\n");
> +	case THERMAL_TRIP_PASSIVE:
> +		return sprintf(buf, "passive\n");
> +	case THERMAL_TRIP_ACTIVE:
> +		return sprintf(buf, "active\n");
> +	default:
> +		return sprintf(buf, "unknown\n");
> +	}
> +}
> +
> +static ssize_t
> +trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> +		     const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	unsigned long temperature;
> +
> +	if (!tz->ops->set_trip_temp)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> +		return -EINVAL;
> +
> +	if (kstrtoul(buf, 10, &temperature))
> +		return -EINVAL;
> +
> +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> +
> +	return ret ? ret : count;
> +}
> +
> +static ssize_t
> +trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> +		     char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	long temperature;
> +
> +	if (!tz->ops->get_trip_temp)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> +		return -EINVAL;
> +
> +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> +
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> +			const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	unsigned long temperature;
> +
> +	if (!tz->ops->set_trip_hyst)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> +		return -EINVAL;
> +
> +	if (kstrtoul(buf, 10, &temperature))
> +		return -EINVAL;
> +
> +	/*
> +	 * We are not doing any check on the 'temperature' value
> +	 * here. The driver implementing 'set_trip_hyst' has to
> +	 * take care of this.
> +	 */
> +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> +
> +	return ret ? ret : count;
> +}
> +
> +static ssize_t
> +trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> +			char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int trip, ret;
> +	unsigned long temperature;
> +
> +	if (!tz->ops->get_trip_hyst)
> +		return -EPERM;
> +
> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> +		return -EINVAL;
> +
> +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> +
> +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +passive_store(struct device *dev, struct device_attribute *attr,
> +		    const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	struct thermal_cooling_device *cdev = NULL;
> +	int state;
> +
> +	if (!sscanf(buf, "%d\n", &state))
> +		return -EINVAL;
> +
> +	/* sanity check: values below 1000 millicelcius don't make sense
> +	 * and can cause the system to go into a thermal heart attack
> +	 */
> +	if (state && state < 1000)
> +		return -EINVAL;
> +
> +	if (state && !tz->forced_passive) {
> +		mutex_lock(&thermal_list_lock);
> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> +			if (!strncmp("Processor", cdev->type,
> +				     sizeof("Processor")))
> +				thermal_zone_bind_cooling_device(tz,
> +						THERMAL_TRIPS_NONE, cdev,
> +						THERMAL_NO_LIMIT,
> +						THERMAL_NO_LIMIT);
> +		}
> +		mutex_unlock(&thermal_list_lock);
> +		if (!tz->passive_delay)
> +			tz->passive_delay = 1000;
> +	} else if (!state && tz->forced_passive) {
> +		mutex_lock(&thermal_list_lock);
> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> +			if (!strncmp("Processor", cdev->type,
> +				     sizeof("Processor")))
> +				thermal_zone_unbind_cooling_device(tz,
> +								   THERMAL_TRIPS_NONE,
> +								   cdev);
> +		}
> +		mutex_unlock(&thermal_list_lock);
> +		tz->passive_delay = 0;
> +	}
> +
> +	tz->forced_passive = state;
> +
> +	thermal_zone_device_update(tz);
> +
> +	return count;
> +}
> +
> +static ssize_t
> +passive_show(struct device *dev, struct device_attribute *attr,
> +		   char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +
> +	return sprintf(buf, "%d\n", tz->forced_passive);
> +}
> +
> +static ssize_t
> +policy_store(struct device *dev, struct device_attribute *attr,
> +		    const char *buf, size_t count)
> +{
> +	int ret = -EINVAL;
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	struct thermal_governor *gov;
> +
> +	mutex_lock(&thermal_governor_lock);
> +
> +	gov = __find_governor(buf);
> +	if (!gov)
> +		goto exit;
> +
> +	tz->governor = gov;
> +	ret = count;
> +
> +exit:
> +	mutex_unlock(&thermal_governor_lock);
> +	return ret;
> +}
> +
> +static ssize_t
> +policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +
> +	return sprintf(buf, "%s\n", tz->governor->name);
> +}
> +
> +#ifdef CONFIG_THERMAL_EMULATION
> +static ssize_t
> +emul_temp_store(struct device *dev, struct device_attribute *attr,
> +		     const char *buf, size_t count)
> +{
> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> +	int ret = 0;
> +	unsigned long temperature;
> +
> +	if (kstrtoul(buf, 10, &temperature))
> +		return -EINVAL;
> +
> +	if (!tz->ops->set_emul_temp) {
> +		mutex_lock(&tz->lock);
> +		tz->emul_temperature = temperature;
> +		mutex_unlock(&tz->lock);
> +	} else {
> +		ret = tz->ops->set_emul_temp(tz, temperature);
> +	}
> +
> +	return ret ? ret : count;
> +}
> +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> +#endif/*CONFIG_THERMAL_EMULATION*/
> +
> +static DEVICE_ATTR(type, 0444, type_show, NULL);
> +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
> +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
> +
> +/* sys I/F for cooling device */
> +#define to_cooling_device(_dev)	\
> +	container_of(_dev, struct thermal_cooling_device, device)
> +
> +static ssize_t
> +thermal_cooling_device_type_show(struct device *dev,
> +				 struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +
> +	return sprintf(buf, "%s\n", cdev->type);
> +}
> +
> +static ssize_t
> +thermal_cooling_device_max_state_show(struct device *dev,
> +				      struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +	unsigned long state;
> +	int ret;
> +
> +	ret = cdev->ops->get_max_state(cdev, &state);
> +	if (ret)
> +		return ret;
> +	return sprintf(buf, "%ld\n", state);
> +}
> +
> +static ssize_t
> +thermal_cooling_device_cur_state_show(struct device *dev,
> +				      struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +	unsigned long state;
> +	int ret;
> +
> +	ret = cdev->ops->get_cur_state(cdev, &state);
> +	if (ret)
> +		return ret;
> +	return sprintf(buf, "%ld\n", state);
> +}
> +
> +static ssize_t
> +thermal_cooling_device_cur_state_store(struct device *dev,
> +				       struct device_attribute *attr,
> +				       const char *buf, size_t count)
> +{
> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> +	unsigned long state;
> +	int result;
> +
> +	if (!sscanf(buf, "%ld\n", &state))
> +		return -EINVAL;
> +
> +	if ((long)state < 0)
> +		return -EINVAL;
> +
> +	result = cdev->ops->set_cur_state(cdev, state);
> +	if (result)
> +		return result;
> +	return count;
> +}
> +
> +static struct device_attribute dev_attr_cdev_type =
> +__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> +static DEVICE_ATTR(max_state, 0444,
> +		   thermal_cooling_device_max_state_show, NULL);
> +static DEVICE_ATTR(cur_state, 0644,
> +		   thermal_cooling_device_cur_state_show,
> +		   thermal_cooling_device_cur_state_store);
> +
> +static ssize_t
> +thermal_cooling_device_trip_point_show(struct device *dev,
> +				       struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_instance *instance;
> +
> +	instance =
> +	    container_of(attr, struct thermal_instance, attr);
> +
> +	if (instance->trip == THERMAL_TRIPS_NONE)
> +		return sprintf(buf, "-1\n");
> +	else
> +		return sprintf(buf, "%d\n", instance->trip);
> +}
> +
> +/* Device management */
> +
> +#if defined(CONFIG_THERMAL_HWMON)
> +
> +/* hwmon sys I/F */
> +#include <linux/hwmon.h>
> +
> +/* thermal zone devices with the same type share one hwmon device */
> +struct thermal_hwmon_device {
> +	char type[THERMAL_NAME_LENGTH];
> +	struct device *device;
> +	int count;
> +	struct list_head tz_list;
> +	struct list_head node;
> +};
> +
> +struct thermal_hwmon_attr {
> +	struct device_attribute attr;
> +	char name[16];
> +};
> +
> +/* one temperature input for each thermal zone */
> +struct thermal_hwmon_temp {
> +	struct list_head hwmon_node;
> +	struct thermal_zone_device *tz;
> +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> +};
> +
> +static LIST_HEAD(thermal_hwmon_list);
> +
> +static ssize_t
> +name_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> +	return sprintf(buf, "%s\n", hwmon->type);
> +}
> +static DEVICE_ATTR(name, 0444, name_show, NULL);
> +
> +static ssize_t
> +temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	long temperature;
> +	int ret;
> +	struct thermal_hwmon_attr *hwmon_attr
> +			= container_of(attr, struct thermal_hwmon_attr, attr);
> +	struct thermal_hwmon_temp *temp
> +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> +				       temp_input);
> +	struct thermal_zone_device *tz = temp->tz;
> +
> +	ret = thermal_zone_get_temp(tz, &temperature);
> +
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +static ssize_t
> +temp_crit_show(struct device *dev, struct device_attribute *attr,
> +		char *buf)
> +{
> +	struct thermal_hwmon_attr *hwmon_attr
> +			= container_of(attr, struct thermal_hwmon_attr, attr);
> +	struct thermal_hwmon_temp *temp
> +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> +				       temp_crit);
> +	struct thermal_zone_device *tz = temp->tz;
> +	long temperature;
> +	int ret;
> +
> +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> +	if (ret)
> +		return ret;
> +
> +	return sprintf(buf, "%ld\n", temperature);
> +}
> +
> +
> +static struct thermal_hwmon_device *
> +thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_device *hwmon;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> +		if (!strcmp(hwmon->type, tz->type)) {
> +			mutex_unlock(&thermal_list_lock);
> +			return hwmon;
> +		}
> +	mutex_unlock(&thermal_list_lock);
> +
> +	return NULL;
> +}
> +
> +/* Find the temperature input matching a given thermal zone */
> +static struct thermal_hwmon_temp *
> +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
> +			  const struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_temp *temp;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> +		if (temp->tz == tz) {
> +			mutex_unlock(&thermal_list_lock);
> +			return temp;
> +		}
> +	mutex_unlock(&thermal_list_lock);
> +
> +	return NULL;
> +}
> +
> +static int
> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_device *hwmon;
> +	struct thermal_hwmon_temp *temp;
> +	int new_hwmon_device = 1;
> +	int result;
> +
> +	hwmon = thermal_hwmon_lookup_by_type(tz);
> +	if (hwmon) {
> +		new_hwmon_device = 0;
> +		goto register_sys_interface;
> +	}
> +
> +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
> +	if (!hwmon)
> +		return -ENOMEM;
> +
> +	INIT_LIST_HEAD(&hwmon->tz_list);
> +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> +	hwmon->device = hwmon_device_register(NULL);
> +	if (IS_ERR(hwmon->device)) {
> +		result = PTR_ERR(hwmon->device);
> +		goto free_mem;
> +	}
> +	dev_set_drvdata(hwmon->device, hwmon);
> +	result = device_create_file(hwmon->device, &dev_attr_name);
> +	if (result)
> +		goto free_mem;
> +
> + register_sys_interface:
> +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> +	if (!temp) {
> +		result = -ENOMEM;
> +		goto unregister_name;
> +	}
> +
> +	temp->tz = tz;
> +	hwmon->count++;
> +
> +	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
> +		 "temp%d_input", hwmon->count);
> +	temp->temp_input.attr.attr.name = temp->temp_input.name;
> +	temp->temp_input.attr.attr.mode = 0444;
> +	temp->temp_input.attr.show = temp_input_show;
> +	sysfs_attr_init(&temp->temp_input.attr.attr);
> +	result = device_create_file(hwmon->device, &temp->temp_input.attr);
> +	if (result)
> +		goto free_temp_mem;
> +
> +	if (tz->ops->get_crit_temp) {
> +		unsigned long temperature;
> +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> +			snprintf(temp->temp_crit.name,
> +				 sizeof(temp->temp_crit.name),
> +				"temp%d_crit", hwmon->count);
> +			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
> +			temp->temp_crit.attr.attr.mode = 0444;
> +			temp->temp_crit.attr.show = temp_crit_show;
> +			sysfs_attr_init(&temp->temp_crit.attr.attr);
> +			result = device_create_file(hwmon->device,
> +						    &temp->temp_crit.attr);
> +			if (result)
> +				goto unregister_input;
> +		}
> +	}
> +
> +	mutex_lock(&thermal_list_lock);
> +	if (new_hwmon_device)
> +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	return 0;
> +
> + unregister_input:
> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> + free_temp_mem:
> +	kfree(temp);
> + unregister_name:
> +	if (new_hwmon_device) {
> +		device_remove_file(hwmon->device, &dev_attr_name);
> +		hwmon_device_unregister(hwmon->device);
> +	}
> + free_mem:
> +	if (new_hwmon_device)
> +		kfree(hwmon);
> +
> +	return result;
> +}
> +
> +static void
> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +	struct thermal_hwmon_device *hwmon;
> +	struct thermal_hwmon_temp *temp;
> +
> +	hwmon = thermal_hwmon_lookup_by_type(tz);
> +	if (unlikely(!hwmon)) {
> +		/* Should never happen... */
> +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> +		return;
> +	}
> +
> +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> +	if (unlikely(!temp)) {
> +		/* Should never happen... */
> +		dev_dbg(&tz->device, "temperature input lookup failed!\n");
> +		return;
> +	}
> +
> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> +	if (tz->ops->get_crit_temp)
> +		device_remove_file(hwmon->device, &temp->temp_crit.attr);
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_del(&temp->hwmon_node);
> +	kfree(temp);
> +	if (!list_empty(&hwmon->tz_list)) {
> +		mutex_unlock(&thermal_list_lock);
> +		return;
> +	}
> +	list_del(&hwmon->node);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	device_remove_file(hwmon->device, &dev_attr_name);
> +	hwmon_device_unregister(hwmon->device);
> +	kfree(hwmon);
> +}
> +#else
> +static int
> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +	return 0;
> +}
> +
> +static void
> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> +{
> +}
> +#endif
> +
> +/**
> + * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
> + * @tz:		thermal zone device
> + * @trip:	indicates which trip point the cooling devices is
> + *		associated with in this thermal zone.
> + * @cdev:	thermal cooling device
> + *
> + * This function is usually called in the thermal zone device .bind callback.
> + */
> +int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> +				     int trip,
> +				     struct thermal_cooling_device *cdev,
> +				     unsigned long upper, unsigned long lower)
> +{
> +	struct thermal_instance *dev;
> +	struct thermal_instance *pos;
> +	struct thermal_zone_device *pos1;
> +	struct thermal_cooling_device *pos2;
> +	unsigned long max_state;
> +	int result;
> +
> +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> +		return -EINVAL;
> +
> +	list_for_each_entry(pos1, &thermal_tz_list, node) {
> +		if (pos1 == tz)
> +			break;
> +	}
> +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> +		if (pos2 == cdev)
> +			break;
> +	}
> +
> +	if (tz != pos1 || cdev != pos2)
> +		return -EINVAL;
> +
> +	cdev->ops->get_max_state(cdev, &max_state);
> +
> +	/* lower default 0, upper default max_state */
> +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> +
> +	if (lower > upper || upper > max_state)
> +		return -EINVAL;
> +
> +	dev =
> +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> +	if (!dev)
> +		return -ENOMEM;
> +	dev->tz = tz;
> +	dev->cdev = cdev;
> +	dev->trip = trip;
> +	dev->upper = upper;
> +	dev->lower = lower;
> +	dev->target = THERMAL_NO_TARGET;
> +
> +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> +	if (result)
> +		goto free_mem;
> +
> +	sprintf(dev->name, "cdev%d", dev->id);
> +	result =
> +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
> +	if (result)
> +		goto release_idr;
> +
> +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> +	sysfs_attr_init(&dev->attr.attr);
> +	dev->attr.attr.name = dev->attr_name;
> +	dev->attr.attr.mode = 0444;
> +	dev->attr.show = thermal_cooling_device_trip_point_show;
> +	result = device_create_file(&tz->device, &dev->attr);
> +	if (result)
> +		goto remove_symbol_link;
> +
> +	mutex_lock(&tz->lock);
> +	mutex_lock(&cdev->lock);
> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> +		result = -EEXIST;
> +		break;
> +	}
> +	if (!result) {
> +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> +		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
> +	}
> +	mutex_unlock(&cdev->lock);
> +	mutex_unlock(&tz->lock);
> +
> +	if (!result)
> +		return 0;
> +
> +	device_remove_file(&tz->device, &dev->attr);
> +remove_symbol_link:
> +	sysfs_remove_link(&tz->device.kobj, dev->name);
> +release_idr:
> +	release_idr(&tz->idr, &tz->lock, dev->id);
> +free_mem:
> +	kfree(dev);
> +	return result;
> +}
> +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> +
> +/**
> + * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
> + * @tz:		thermal zone device
> + * @trip:	indicates which trip point the cooling devices is
> + *		associated with in this thermal zone.
> + * @cdev:	thermal cooling device
> + *
> + * This function is usually called in the thermal zone device .unbind callback.
> + */
> +int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> +				       int trip,
> +				       struct thermal_cooling_device *cdev)
> +{
> +	struct thermal_instance *pos, *next;
> +
> +	mutex_lock(&tz->lock);
> +	mutex_lock(&cdev->lock);
> +	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> +			list_del(&pos->tz_node);
> +			list_del(&pos->cdev_node);
> +			mutex_unlock(&cdev->lock);
> +			mutex_unlock(&tz->lock);
> +			goto unbind;
> +		}
> +	}
> +	mutex_unlock(&cdev->lock);
> +	mutex_unlock(&tz->lock);
> +
> +	return -ENODEV;
> +
> +unbind:
> +	device_remove_file(&tz->device, &pos->attr);
> +	sysfs_remove_link(&tz->device.kobj, pos->name);
> +	release_idr(&tz->idr, &tz->lock, pos->id);
> +	kfree(pos);
> +	return 0;
> +}
> +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> +
> +static void thermal_release(struct device *dev)
> +{
> +	struct thermal_zone_device *tz;
> +	struct thermal_cooling_device *cdev;
> +
> +	if (!strncmp(dev_name(dev), "thermal_zone",
> +		     sizeof("thermal_zone") - 1)) {
> +		tz = to_thermal_zone(dev);
> +		kfree(tz);
> +	} else {
> +		cdev = to_cooling_device(dev);
> +		kfree(cdev);
> +	}
> +}
> +
> +static struct class thermal_class = {
> +	.name = "thermal",
> +	.dev_release = thermal_release,
> +};
> +
> +/**
> + * thermal_cooling_device_register - register a new thermal cooling device
> + * @type:	the thermal cooling device type.
> + * @devdata:	device private data.
> + * @ops:		standard thermal cooling devices callbacks.
> + */
> +struct thermal_cooling_device *
> +thermal_cooling_device_register(char *type, void *devdata,
> +				const struct thermal_cooling_device_ops *ops)
> +{
> +	struct thermal_cooling_device *cdev;
> +	int result;
> +
> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> +	    !ops->set_cur_state)
> +		return ERR_PTR(-EINVAL);
> +
> +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> +	if (!cdev)
> +		return ERR_PTR(-ENOMEM);
> +
> +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> +	if (result) {
> +		kfree(cdev);
> +		return ERR_PTR(result);
> +	}
> +
> +	strcpy(cdev->type, type ? : "");
> +	mutex_init(&cdev->lock);
> +	INIT_LIST_HEAD(&cdev->thermal_instances);
> +	cdev->ops = ops;
> +	cdev->updated = true;
> +	cdev->device.class = &thermal_class;
> +	cdev->devdata = devdata;
> +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> +	result = device_register(&cdev->device);
> +	if (result) {
> +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> +		kfree(cdev);
> +		return ERR_PTR(result);
> +	}
> +
> +	/* sys I/F */
> +	if (type) {
> +		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +	result = device_create_file(&cdev->device, &dev_attr_max_state);
> +	if (result)
> +		goto unregister;
> +
> +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> +	if (result)
> +		goto unregister;
> +
> +	/* Add 'this' new cdev to the global cdev list */
> +	mutex_lock(&thermal_list_lock);
> +	list_add(&cdev->node, &thermal_cdev_list);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	/* Update binding information for 'this' new cdev */
> +	bind_cdev(cdev);
> +
> +	return cdev;
> +
> +unregister:
> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> +	device_unregister(&cdev->device);
> +	return ERR_PTR(result);
> +}
> +EXPORT_SYMBOL(thermal_cooling_device_register);
> +
> +/**
> + * thermal_cooling_device_unregister - removes the registered thermal cooling device
> + * @cdev:	the thermal cooling device to remove.
> + *
> + * thermal_cooling_device_unregister() must be called when the device is no
> + * longer needed.
> + */
> +void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
> +{
> +	int i;
> +	const struct thermal_zone_params *tzp;
> +	struct thermal_zone_device *tz;
> +	struct thermal_cooling_device *pos = NULL;
> +
> +	if (!cdev)
> +		return;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(pos, &thermal_cdev_list, node)
> +	    if (pos == cdev)
> +		break;
> +	if (pos != cdev) {
> +		/* thermal cooling device not found */
> +		mutex_unlock(&thermal_list_lock);
> +		return;
> +	}
> +	list_del(&cdev->node);
> +
> +	/* Unbind all thermal zones associated with 'this' cdev */
> +	list_for_each_entry(tz, &thermal_tz_list, node) {
> +		if (tz->ops->unbind) {
> +			tz->ops->unbind(tz, cdev);
> +			continue;
> +		}
> +
> +		if (!tz->tzp || !tz->tzp->tbp)
> +			continue;
> +
> +		tzp = tz->tzp;
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev == cdev) {
> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> +				tzp->tbp[i].cdev = NULL;
> +			}
> +		}
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +
> +	if (cdev->type[0])
> +		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> +	device_remove_file(&cdev->device, &dev_attr_max_state);
> +	device_remove_file(&cdev->device, &dev_attr_cur_state);
> +
> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> +	device_unregister(&cdev->device);
> +	return;
> +}
> +EXPORT_SYMBOL(thermal_cooling_device_unregister);
> +
> +void thermal_cdev_update(struct thermal_cooling_device *cdev)
> +{
> +	struct thermal_instance *instance;
> +	unsigned long target = 0;
> +
> +	/* cooling device is updated*/
> +	if (cdev->updated)
> +		return;
> +
> +	mutex_lock(&cdev->lock);
> +	/* Make sure cdev enters the deepest cooling state */
> +	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
> +		if (instance->target == THERMAL_NO_TARGET)
> +			continue;
> +		if (instance->target > target)
> +			target = instance->target;
> +	}
> +	mutex_unlock(&cdev->lock);
> +	cdev->ops->set_cur_state(cdev, target);
> +	cdev->updated = true;
> +}
> +EXPORT_SYMBOL(thermal_cdev_update);
> +
> +/**
> + * notify_thermal_framework - Sensor drivers use this API to notify framework
> + * @tz:		thermal zone device
> + * @trip:	indicates which trip point has been crossed
> + *
> + * This function handles the trip events from sensor drivers. It starts
> + * throttling the cooling devices according to the policy configured.
> + * For CRITICAL and HOT trip points, this notifies the respective drivers,
> + * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> + * The throttling policy is based on the configured platform data; if no
> + * platform data is provided, this uses the step_wise throttling policy.
> + */
> +void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> +{
> +	handle_thermal_trip(tz, trip);
> +}
> +EXPORT_SYMBOL(notify_thermal_framework);
> +
> +/**
> + * create_trip_attrs - create attributes for trip points
> + * @tz:		the thermal zone device
> + * @mask:	Writeable trip point bitmap.
> + */
> +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> +{
> +	int indx;
> +	int size = sizeof(struct thermal_attr) * tz->trips;
> +
> +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> +	if (!tz->trip_type_attrs)
> +		return -ENOMEM;
> +
> +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> +	if (!tz->trip_temp_attrs) {
> +		kfree(tz->trip_type_attrs);
> +		return -ENOMEM;
> +	}
> +
> +	if (tz->ops->get_trip_hyst) {
> +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> +		if (!tz->trip_hyst_attrs) {
> +			kfree(tz->trip_type_attrs);
> +			kfree(tz->trip_temp_attrs);
> +			return -ENOMEM;
> +		}
> +	}
> +
> +
> +	for (indx = 0; indx < tz->trips; indx++) {
> +		/* create trip type attribute */
> +		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
> +			 "trip_point_%d_type", indx);
> +
> +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> +		tz->trip_type_attrs[indx].attr.attr.name =
> +						tz->trip_type_attrs[indx].name;
> +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> +
> +		device_create_file(&tz->device,
> +				   &tz->trip_type_attrs[indx].attr);
> +
> +		/* create trip temp attribute */
> +		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
> +			 "trip_point_%d_temp", indx);
> +
> +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> +		tz->trip_temp_attrs[indx].attr.attr.name =
> +						tz->trip_temp_attrs[indx].name;
> +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> +		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
> +		if (mask & (1 << indx)) {
> +			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
> +			tz->trip_temp_attrs[indx].attr.store =
> +							trip_point_temp_store;
> +		}
> +
> +		device_create_file(&tz->device,
> +				   &tz->trip_temp_attrs[indx].attr);
> +
> +		/* create Optional trip hyst attribute */
> +		if (!tz->ops->get_trip_hyst)
> +			continue;
> +		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
> +			 "trip_point_%d_hyst", indx);
> +
> +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> +		tz->trip_hyst_attrs[indx].attr.attr.name =
> +					tz->trip_hyst_attrs[indx].name;
> +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> +		if (tz->ops->set_trip_hyst) {
> +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> +			tz->trip_hyst_attrs[indx].attr.store =
> +					trip_point_hyst_store;
> +		}
> +
> +		device_create_file(&tz->device,
> +				   &tz->trip_hyst_attrs[indx].attr);
> +	}
> +	return 0;
> +}
> +
> +static void remove_trip_attrs(struct thermal_zone_device *tz)
> +{
> +	int indx;
> +
> +	for (indx = 0; indx < tz->trips; indx++) {
> +		device_remove_file(&tz->device,
> +				   &tz->trip_type_attrs[indx].attr);
> +		device_remove_file(&tz->device,
> +				   &tz->trip_temp_attrs[indx].attr);
> +		if (tz->ops->get_trip_hyst)
> +			device_remove_file(&tz->device,
> +				  &tz->trip_hyst_attrs[indx].attr);
> +	}
> +	kfree(tz->trip_type_attrs);
> +	kfree(tz->trip_temp_attrs);
> +	kfree(tz->trip_hyst_attrs);
> +}
> +
> +/**
> + * thermal_zone_device_register - register a new thermal zone device
> + * @type:	the thermal zone device type
> + * @trips:	the number of trip points the thermal zone support
> + * @mask:	a bit string indicating the writeablility of trip points
> + * @devdata:	private device data
> + * @ops:	standard thermal zone device callbacks
> + * @tzp:	thermal zone platform parameters
> + * @passive_delay: number of milliseconds to wait between polls when
> + *		   performing passive cooling
> + * @polling_delay: number of milliseconds to wait between polls when checking
> + *		   whether trip points have been crossed (0 for interrupt
> + *		   driven systems)
> + *
> + * thermal_zone_device_unregister() must be called when the device is no
> + * longer needed. The passive cooling depends on the .get_trend() return value.
> + */
> +struct thermal_zone_device *thermal_zone_device_register(const char *type,
> +	int trips, int mask, void *devdata,
> +	const struct thermal_zone_device_ops *ops,
> +	const struct thermal_zone_params *tzp,
> +	int passive_delay, int polling_delay)
> +{
> +	struct thermal_zone_device *tz;
> +	enum thermal_trip_type trip_type;
> +	int result;
> +	int count;
> +	int passive = 0;
> +
> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (!ops || !ops->get_temp)
> +		return ERR_PTR(-EINVAL);
> +
> +	if (trips > 0 && !ops->get_trip_type)
> +		return ERR_PTR(-EINVAL);
> +
> +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> +	if (!tz)
> +		return ERR_PTR(-ENOMEM);
> +
> +	INIT_LIST_HEAD(&tz->thermal_instances);
> +	idr_init(&tz->idr);
> +	mutex_init(&tz->lock);
> +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> +	if (result) {
> +		kfree(tz);
> +		return ERR_PTR(result);
> +	}
> +
> +	strcpy(tz->type, type ? : "");
> +	tz->ops = ops;
> +	tz->tzp = tzp;
> +	tz->device.class = &thermal_class;
> +	tz->devdata = devdata;
> +	tz->trips = trips;
> +	tz->passive_delay = passive_delay;
> +	tz->polling_delay = polling_delay;
> +
> +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> +	result = device_register(&tz->device);
> +	if (result) {
> +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> +		kfree(tz);
> +		return ERR_PTR(result);
> +	}
> +
> +	/* sys I/F */
> +	if (type) {
> +		result = device_create_file(&tz->device, &dev_attr_type);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +	result = device_create_file(&tz->device, &dev_attr_temp);
> +	if (result)
> +		goto unregister;
> +
> +	if (ops->get_mode) {
> +		result = device_create_file(&tz->device, &dev_attr_mode);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +	result = create_trip_attrs(tz, mask);
> +	if (result)
> +		goto unregister;
> +
> +	for (count = 0; count < trips; count++) {
> +		tz->ops->get_trip_type(tz, count, &trip_type);
> +		if (trip_type == THERMAL_TRIP_PASSIVE)
> +			passive = 1;
> +	}
> +
> +	if (!passive) {
> +		result = device_create_file(&tz->device, &dev_attr_passive);
> +		if (result)
> +			goto unregister;
> +	}
> +
> +#ifdef CONFIG_THERMAL_EMULATION
> +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> +	if (result)
> +		goto unregister;
> +#endif
> +	/* Create policy attribute */
> +	result = device_create_file(&tz->device, &dev_attr_policy);
> +	if (result)
> +		goto unregister;
> +
> +	/* Update 'this' zone's governor information */
> +	mutex_lock(&thermal_governor_lock);
> +
> +	if (tz->tzp)
> +		tz->governor = __find_governor(tz->tzp->governor_name);
> +	else
> +		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
> +
> +	mutex_unlock(&thermal_governor_lock);
> +
> +	result = thermal_add_hwmon_sysfs(tz);
> +	if (result)
> +		goto unregister;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_add_tail(&tz->node, &thermal_tz_list);
> +	mutex_unlock(&thermal_list_lock);
> +
> +	/* Bind cooling devices for this zone */
> +	bind_tz(tz);
> +
> +	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
> +
> +	thermal_zone_device_update(tz);
> +
> +	if (!result)
> +		return tz;
> +
> +unregister:
> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> +	device_unregister(&tz->device);
> +	return ERR_PTR(result);
> +}
> +EXPORT_SYMBOL(thermal_zone_device_register);
> +
> +/**
> + * thermal_device_unregister - removes the registered thermal zone device
> + * @tz: the thermal zone device to remove
> + */
> +void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> +{
> +	int i;
> +	const struct thermal_zone_params *tzp;
> +	struct thermal_cooling_device *cdev;
> +	struct thermal_zone_device *pos = NULL;
> +
> +	if (!tz)
> +		return;
> +
> +	tzp = tz->tzp;
> +
> +	mutex_lock(&thermal_list_lock);
> +	list_for_each_entry(pos, &thermal_tz_list, node)
> +	    if (pos == tz)
> +		break;
> +	if (pos != tz) {
> +		/* thermal zone device not found */
> +		mutex_unlock(&thermal_list_lock);
> +		return;
> +	}
> +	list_del(&tz->node);
> +
> +	/* Unbind all cdevs associated with 'this' thermal zone */
> +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> +		if (tz->ops->unbind) {
> +			tz->ops->unbind(tz, cdev);
> +			continue;
> +		}
> +
> +		if (!tzp || !tzp->tbp)
> +			break;
> +
> +		for (i = 0; i < tzp->num_tbps; i++) {
> +			if (tzp->tbp[i].cdev == cdev) {
> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> +				tzp->tbp[i].cdev = NULL;
> +			}
> +		}
> +	}
> +
> +	mutex_unlock(&thermal_list_lock);
> +
> +	thermal_zone_device_set_polling(tz, 0);
> +
> +	if (tz->type[0])
> +		device_remove_file(&tz->device, &dev_attr_type);
> +	device_remove_file(&tz->device, &dev_attr_temp);
> +	if (tz->ops->get_mode)
> +		device_remove_file(&tz->device, &dev_attr_mode);
> +	device_remove_file(&tz->device, &dev_attr_policy);
> +	remove_trip_attrs(tz);
> +	tz->governor = NULL;
> +
> +	thermal_remove_hwmon_sysfs(tz);
> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> +	idr_destroy(&tz->idr);
> +	mutex_destroy(&tz->lock);
> +	device_unregister(&tz->device);
> +	return;
> +}
> +EXPORT_SYMBOL(thermal_zone_device_unregister);
> +
> +#ifdef CONFIG_NET
> +static struct genl_family thermal_event_genl_family = {
> +	.id = GENL_ID_GENERATE,
> +	.name = THERMAL_GENL_FAMILY_NAME,
> +	.version = THERMAL_GENL_VERSION,
> +	.maxattr = THERMAL_GENL_ATTR_MAX,
> +};
> +
> +static struct genl_multicast_group thermal_event_mcgrp = {
> +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> +};
> +
> +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> +					enum events event)
> +{
> +	struct sk_buff *skb;
> +	struct nlattr *attr;
> +	struct thermal_genl_event *thermal_event;
> +	void *msg_header;
> +	int size;
> +	int result;
> +	static unsigned int thermal_event_seqnum;
> +
> +	if (!tz)
> +		return -EINVAL;
> +
> +	/* allocate memory */
> +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> +	       nla_total_size(0);
> +
> +	skb = genlmsg_new(size, GFP_ATOMIC);
> +	if (!skb)
> +		return -ENOMEM;
> +
> +	/* add the genetlink message header */
> +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> +				 &thermal_event_genl_family, 0,
> +				 THERMAL_GENL_CMD_EVENT);
> +	if (!msg_header) {
> +		nlmsg_free(skb);
> +		return -ENOMEM;
> +	}
> +
> +	/* fill the data */
> +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> +			   sizeof(struct thermal_genl_event));
> +
> +	if (!attr) {
> +		nlmsg_free(skb);
> +		return -EINVAL;
> +	}
> +
> +	thermal_event = nla_data(attr);
> +	if (!thermal_event) {
> +		nlmsg_free(skb);
> +		return -EINVAL;
> +	}
> +
> +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> +
> +	thermal_event->orig = tz->id;
> +	thermal_event->event = event;
> +
> +	/* send multicast genetlink message */
> +	result = genlmsg_end(skb, msg_header);
> +	if (result < 0) {
> +		nlmsg_free(skb);
> +		return result;
> +	}
> +
> +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
> +	if (result)
> +		dev_err(&tz->device, "Failed to send netlink event:%d", result);
> +
> +	return result;
> +}
> +EXPORT_SYMBOL(thermal_generate_netlink_event);
> +
> +static int genetlink_init(void)
> +{
> +	int result;
> +
> +	result = genl_register_family(&thermal_event_genl_family);
> +	if (result)
> +		return result;
> +
> +	result = genl_register_mc_group(&thermal_event_genl_family,
> +					&thermal_event_mcgrp);
> +	if (result)
> +		genl_unregister_family(&thermal_event_genl_family);
> +	return result;
> +}
> +
> +static void genetlink_exit(void)
> +{
> +	genl_unregister_family(&thermal_event_genl_family);
> +}
> +#else /* !CONFIG_NET */
> +static inline int genetlink_init(void) { return 0; }
> +static inline void genetlink_exit(void) {}
> +#endif /* !CONFIG_NET */
> +
> +static int __init thermal_init(void)
> +{
> +	int result = 0;
> +
> +	result = class_register(&thermal_class);
> +	if (result) {
> +		idr_destroy(&thermal_tz_idr);
> +		idr_destroy(&thermal_cdev_idr);
> +		mutex_destroy(&thermal_idr_lock);
> +		mutex_destroy(&thermal_list_lock);
> +		return result;
> +	}
> +	result = genetlink_init();
> +	return result;
> +}
> +
> +static void __exit thermal_exit(void)
> +{
> +	class_unregister(&thermal_class);
> +	idr_destroy(&thermal_tz_idr);
> +	idr_destroy(&thermal_cdev_idr);
> +	mutex_destroy(&thermal_idr_lock);
> +	mutex_destroy(&thermal_list_lock);
> +	genetlink_exit();
> +}
> +
> +fs_initcall(thermal_init);
> +module_exit(thermal_exit);
> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
> deleted file mode 100644
> index 5b7863a..0000000
> --- a/drivers/thermal/thermal_sys.c
> +++ /dev/null
> @@ -1,1888 +0,0 @@
> -/*
> - *  thermal.c - Generic Thermal Management Sysfs support.
> - *
> - *  Copyright (C) 2008 Intel Corp
> - *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> - *
> - *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> - *
> - *  This program is free software; you can redistribute it and/or modify
> - *  it under the terms of the GNU General Public License as published by
> - *  the Free Software Foundation; version 2 of the License.
> - *
> - *  This program is distributed in the hope that it will be useful, but
> - *  WITHOUT ANY WARRANTY; without even the implied warranty of
> - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> - *  General Public License for more details.
> - *
> - *  You should have received a copy of the GNU General Public License along
> - *  with this program; if not, write to the Free Software Foundation, Inc.,
> - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> - *
> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> - */
> -
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
> -#include <linux/device.h>
> -#include <linux/err.h>
> -#include <linux/slab.h>
> -#include <linux/kdev_t.h>
> -#include <linux/idr.h>
> -#include <linux/thermal.h>
> -#include <linux/reboot.h>
> -#include <net/netlink.h>
> -#include <net/genetlink.h>
> -
> -#include "thermal_core.h"
> -
> -MODULE_AUTHOR("Zhang Rui");
> -MODULE_DESCRIPTION("Generic thermal management sysfs support");
> -MODULE_LICENSE("GPL");
> -
> -static DEFINE_IDR(thermal_tz_idr);
> -static DEFINE_IDR(thermal_cdev_idr);
> -static DEFINE_MUTEX(thermal_idr_lock);
> -
> -static LIST_HEAD(thermal_tz_list);
> -static LIST_HEAD(thermal_cdev_list);
> -static LIST_HEAD(thermal_governor_list);
> -
> -static DEFINE_MUTEX(thermal_list_lock);
> -static DEFINE_MUTEX(thermal_governor_lock);
> -
> -static struct thermal_governor *__find_governor(const char *name)
> -{
> -	struct thermal_governor *pos;
> -
> -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> -			return pos;
> -
> -	return NULL;
> -}
> -
> -int thermal_register_governor(struct thermal_governor *governor)
> -{
> -	int err;
> -	const char *name;
> -	struct thermal_zone_device *pos;
> -
> -	if (!governor)
> -		return -EINVAL;
> -
> -	mutex_lock(&thermal_governor_lock);
> -
> -	err = -EBUSY;
> -	if (__find_governor(governor->name) == NULL) {
> -		err = 0;
> -		list_add(&governor->governor_list, &thermal_governor_list);
> -	}
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> -		if (pos->governor)
> -			continue;
> -		if (pos->tzp)
> -			name = pos->tzp->governor_name;
> -		else
> -			name = DEFAULT_THERMAL_GOVERNOR;
> -		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
> -			pos->governor = governor;
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -	mutex_unlock(&thermal_governor_lock);
> -
> -	return err;
> -}
> -EXPORT_SYMBOL_GPL(thermal_register_governor);
> -
> -void thermal_unregister_governor(struct thermal_governor *governor)
> -{
> -	struct thermal_zone_device *pos;
> -
> -	if (!governor)
> -		return;
> -
> -	mutex_lock(&thermal_governor_lock);
> -
> -	if (__find_governor(governor->name) == NULL)
> -		goto exit;
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> -		if (!strnicmp(pos->governor->name, governor->name,
> -						THERMAL_NAME_LENGTH))
> -			pos->governor = NULL;
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -	list_del(&governor->governor_list);
> -exit:
> -	mutex_unlock(&thermal_governor_lock);
> -	return;
> -}
> -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> -
> -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> -{
> -	int ret;
> -
> -	if (lock)
> -		mutex_lock(lock);
> -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> -	if (lock)
> -		mutex_unlock(lock);
> -	if (unlikely(ret < 0))
> -		return ret;
> -	*id = ret;
> -	return 0;
> -}
> -
> -static void release_idr(struct idr *idr, struct mutex *lock, int id)
> -{
> -	if (lock)
> -		mutex_lock(lock);
> -	idr_remove(idr, id);
> -	if (lock)
> -		mutex_unlock(lock);
> -}
> -
> -int get_tz_trend(struct thermal_zone_device *tz, int trip)
> -{
> -	enum thermal_trend trend;
> -
> -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> -		if (tz->temperature > tz->last_temperature)
> -			trend = THERMAL_TREND_RAISING;
> -		else if (tz->temperature < tz->last_temperature)
> -			trend = THERMAL_TREND_DROPPING;
> -		else
> -			trend = THERMAL_TREND_STABLE;
> -	}
> -
> -	return trend;
> -}
> -EXPORT_SYMBOL(get_tz_trend);
> -
> -struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
> -			struct thermal_cooling_device *cdev, int trip)
> -{
> -	struct thermal_instance *pos = NULL;
> -	struct thermal_instance *target_instance = NULL;
> -
> -	mutex_lock(&tz->lock);
> -	mutex_lock(&cdev->lock);
> -
> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> -			target_instance = pos;
> -			break;
> -		}
> -	}
> -
> -	mutex_unlock(&cdev->lock);
> -	mutex_unlock(&tz->lock);
> -
> -	return target_instance;
> -}
> -EXPORT_SYMBOL(get_thermal_instance);
> -
> -static void print_bind_err_msg(struct thermal_zone_device *tz,
> -			struct thermal_cooling_device *cdev, int ret)
> -{
> -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> -				tz->type, cdev->type, ret);
> -}
> -
> -static void __bind(struct thermal_zone_device *tz, int mask,
> -			struct thermal_cooling_device *cdev)
> -{
> -	int i, ret;
> -
> -	for (i = 0; i < tz->trips; i++) {
> -		if (mask & (1 << i)) {
> -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> -					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
> -			if (ret)
> -				print_bind_err_msg(tz, cdev, ret);
> -		}
> -	}
> -}
> -
> -static void __unbind(struct thermal_zone_device *tz, int mask,
> -			struct thermal_cooling_device *cdev)
> -{
> -	int i;
> -
> -	for (i = 0; i < tz->trips; i++)
> -		if (mask & (1 << i))
> -			thermal_zone_unbind_cooling_device(tz, i, cdev);
> -}
> -
> -static void bind_cdev(struct thermal_cooling_device *cdev)
> -{
> -	int i, ret;
> -	const struct thermal_zone_params *tzp;
> -	struct thermal_zone_device *pos = NULL;
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> -		if (!pos->tzp && !pos->ops->bind)
> -			continue;
> -
> -		if (!pos->tzp && pos->ops->bind) {
> -			ret = pos->ops->bind(pos, cdev);
> -			if (ret)
> -				print_bind_err_msg(pos, cdev, ret);
> -		}
> -
> -		tzp = pos->tzp;
> -		if (!tzp || !tzp->tbp)
> -			continue;
> -
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> -				continue;
> -			if (tzp->tbp[i].match(pos, cdev))
> -				continue;
> -			tzp->tbp[i].cdev = cdev;
> -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> -		}
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -}
> -
> -static void bind_tz(struct thermal_zone_device *tz)
> -{
> -	int i, ret;
> -	struct thermal_cooling_device *pos = NULL;
> -	const struct thermal_zone_params *tzp = tz->tzp;
> -
> -	if (!tzp && !tz->ops->bind)
> -		return;
> -
> -	mutex_lock(&thermal_list_lock);
> -
> -	/* If there is no platform data, try to use ops->bind */
> -	if (!tzp && tz->ops->bind) {
> -		list_for_each_entry(pos, &thermal_cdev_list, node) {
> -			ret = tz->ops->bind(tz, pos);
> -			if (ret)
> -				print_bind_err_msg(tz, pos, ret);
> -		}
> -		goto exit;
> -	}
> -
> -	if (!tzp || !tzp->tbp)
> -		goto exit;
> -
> -	list_for_each_entry(pos, &thermal_cdev_list, node) {
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> -				continue;
> -			if (tzp->tbp[i].match(tz, pos))
> -				continue;
> -			tzp->tbp[i].cdev = pos;
> -			__bind(tz, tzp->tbp[i].trip_mask, pos);
> -		}
> -	}
> -exit:
> -	mutex_unlock(&thermal_list_lock);
> -}
> -
> -static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
> -					    int delay)
> -{
> -	if (delay > 1000)
> -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> -				 round_jiffies(msecs_to_jiffies(delay)));
> -	else if (delay)
> -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> -				 msecs_to_jiffies(delay));
> -	else
> -		cancel_delayed_work(&tz->poll_queue);
> -}
> -
> -static void monitor_thermal_zone(struct thermal_zone_device *tz)
> -{
> -	mutex_lock(&tz->lock);
> -
> -	if (tz->passive)
> -		thermal_zone_device_set_polling(tz, tz->passive_delay);
> -	else if (tz->polling_delay)
> -		thermal_zone_device_set_polling(tz, tz->polling_delay);
> -	else
> -		thermal_zone_device_set_polling(tz, 0);
> -
> -	mutex_unlock(&tz->lock);
> -}
> -
> -static void handle_non_critical_trips(struct thermal_zone_device *tz,
> -			int trip, enum thermal_trip_type trip_type)
> -{
> -	if (tz->governor)
> -		tz->governor->throttle(tz, trip);
> -}
> -
> -static void handle_critical_trips(struct thermal_zone_device *tz,
> -				int trip, enum thermal_trip_type trip_type)
> -{
> -	long trip_temp;
> -
> -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> -
> -	/* If we have not crossed the trip_temp, we do not care. */
> -	if (tz->temperature < trip_temp)
> -		return;
> -
> -	if (tz->ops->notify)
> -		tz->ops->notify(tz, trip, trip_type);
> -
> -	if (trip_type == THERMAL_TRIP_CRITICAL) {
> -		dev_emerg(&tz->device,
> -			  "critical temperature reached(%d C),shutting down\n",
> -			  tz->temperature / 1000);
> -		orderly_poweroff(true);
> -	}
> -}
> -
> -static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> -{
> -	enum thermal_trip_type type;
> -
> -	tz->ops->get_trip_type(tz, trip, &type);
> -
> -	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
> -		handle_critical_trips(tz, trip, type);
> -	else
> -		handle_non_critical_trips(tz, trip, type);
> -	/*
> -	 * Alright, we handled this trip successfully.
> -	 * So, start monitoring again.
> -	 */
> -	monitor_thermal_zone(tz);
> -}
> -
> -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> -				unsigned long *temp)
> -{
> -	int ret = 0;
> -#ifdef CONFIG_THERMAL_EMULATION
> -	int count;
> -	unsigned long crit_temp = -1UL;
> -	enum thermal_trip_type type;
> -#endif
> -
> -	mutex_lock(&tz->lock);
> -
> -	ret = tz->ops->get_temp(tz, temp);
> -#ifdef CONFIG_THERMAL_EMULATION
> -	if (!tz->emul_temperature)
> -		goto skip_emul;
> -
> -	for (count = 0; count < tz->trips; count++) {
> -		ret = tz->ops->get_trip_type(tz, count, &type);
> -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> -			break;
> -		}
> -	}
> -
> -	if (ret)
> -		goto skip_emul;
> -
> -	if (*temp < crit_temp)
> -		*temp = tz->emul_temperature;
> -skip_emul:
> -#endif
> -	mutex_unlock(&tz->lock);
> -	return ret;
> -}
> -
> -static void update_temperature(struct thermal_zone_device *tz)
> -{
> -	long temp;
> -	int ret;
> -
> -	ret = thermal_zone_get_temp(tz, &temp);
> -	if (ret) {
> -		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
> -			 tz->id);
> -		return;
> -	}
> -
> -	mutex_lock(&tz->lock);
> -	tz->last_temperature = tz->temperature;
> -	tz->temperature = temp;
> -	mutex_unlock(&tz->lock);
> -}
> -
> -void thermal_zone_device_update(struct thermal_zone_device *tz)
> -{
> -	int count;
> -
> -	update_temperature(tz);
> -
> -	for (count = 0; count < tz->trips; count++)
> -		handle_thermal_trip(tz, count);
> -}
> -EXPORT_SYMBOL(thermal_zone_device_update);
> -
> -static void thermal_zone_device_check(struct work_struct *work)
> -{
> -	struct thermal_zone_device *tz = container_of(work, struct
> -						      thermal_zone_device,
> -						      poll_queue.work);
> -	thermal_zone_device_update(tz);
> -}
> -
> -/* sys I/F for thermal zone */
> -
> -#define to_thermal_zone(_dev) \
> -	container_of(_dev, struct thermal_zone_device, device)
> -
> -static ssize_t
> -type_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -
> -	return sprintf(buf, "%s\n", tz->type);
> -}
> -
> -static ssize_t
> -temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	long temperature;
> -	int ret;
> -
> -	ret = thermal_zone_get_temp(tz, &temperature);
> -
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	enum thermal_device_mode mode;
> -	int result;
> -
> -	if (!tz->ops->get_mode)
> -		return -EPERM;
> -
> -	result = tz->ops->get_mode(tz, &mode);
> -	if (result)
> -		return result;
> -
> -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
> -		       : "disabled");
> -}
> -
> -static ssize_t
> -mode_store(struct device *dev, struct device_attribute *attr,
> -	   const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int result;
> -
> -	if (!tz->ops->set_mode)
> -		return -EPERM;
> -
> -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
> -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
> -	else
> -		result = -EINVAL;
> -
> -	if (result)
> -		return result;
> -
> -	return count;
> -}
> -
> -static ssize_t
> -trip_point_type_show(struct device *dev, struct device_attribute *attr,
> -		     char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	enum thermal_trip_type type;
> -	int trip, result;
> -
> -	if (!tz->ops->get_trip_type)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> -		return -EINVAL;
> -
> -	result = tz->ops->get_trip_type(tz, trip, &type);
> -	if (result)
> -		return result;
> -
> -	switch (type) {
> -	case THERMAL_TRIP_CRITICAL:
> -		return sprintf(buf, "critical\n");
> -	case THERMAL_TRIP_HOT:
> -		return sprintf(buf, "hot\n");
> -	case THERMAL_TRIP_PASSIVE:
> -		return sprintf(buf, "passive\n");
> -	case THERMAL_TRIP_ACTIVE:
> -		return sprintf(buf, "active\n");
> -	default:
> -		return sprintf(buf, "unknown\n");
> -	}
> -}
> -
> -static ssize_t
> -trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> -		     const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	unsigned long temperature;
> -
> -	if (!tz->ops->set_trip_temp)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> -		return -EINVAL;
> -
> -	if (kstrtoul(buf, 10, &temperature))
> -		return -EINVAL;
> -
> -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> -
> -	return ret ? ret : count;
> -}
> -
> -static ssize_t
> -trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> -		     char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	long temperature;
> -
> -	if (!tz->ops->get_trip_temp)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> -		return -EINVAL;
> -
> -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> -
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> -			const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	unsigned long temperature;
> -
> -	if (!tz->ops->set_trip_hyst)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> -		return -EINVAL;
> -
> -	if (kstrtoul(buf, 10, &temperature))
> -		return -EINVAL;
> -
> -	/*
> -	 * We are not doing any check on the 'temperature' value
> -	 * here. The driver implementing 'set_trip_hyst' has to
> -	 * take care of this.
> -	 */
> -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> -
> -	return ret ? ret : count;
> -}
> -
> -static ssize_t
> -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> -			char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int trip, ret;
> -	unsigned long temperature;
> -
> -	if (!tz->ops->get_trip_hyst)
> -		return -EPERM;
> -
> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> -		return -EINVAL;
> -
> -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> -
> -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -passive_store(struct device *dev, struct device_attribute *attr,
> -		    const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	struct thermal_cooling_device *cdev = NULL;
> -	int state;
> -
> -	if (!sscanf(buf, "%d\n", &state))
> -		return -EINVAL;
> -
> -	/* sanity check: values below 1000 millicelcius don't make sense
> -	 * and can cause the system to go into a thermal heart attack
> -	 */
> -	if (state && state < 1000)
> -		return -EINVAL;
> -
> -	if (state && !tz->forced_passive) {
> -		mutex_lock(&thermal_list_lock);
> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> -			if (!strncmp("Processor", cdev->type,
> -				     sizeof("Processor")))
> -				thermal_zone_bind_cooling_device(tz,
> -						THERMAL_TRIPS_NONE, cdev,
> -						THERMAL_NO_LIMIT,
> -						THERMAL_NO_LIMIT);
> -		}
> -		mutex_unlock(&thermal_list_lock);
> -		if (!tz->passive_delay)
> -			tz->passive_delay = 1000;
> -	} else if (!state && tz->forced_passive) {
> -		mutex_lock(&thermal_list_lock);
> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> -			if (!strncmp("Processor", cdev->type,
> -				     sizeof("Processor")))
> -				thermal_zone_unbind_cooling_device(tz,
> -								   THERMAL_TRIPS_NONE,
> -								   cdev);
> -		}
> -		mutex_unlock(&thermal_list_lock);
> -		tz->passive_delay = 0;
> -	}
> -
> -	tz->forced_passive = state;
> -
> -	thermal_zone_device_update(tz);
> -
> -	return count;
> -}
> -
> -static ssize_t
> -passive_show(struct device *dev, struct device_attribute *attr,
> -		   char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -
> -	return sprintf(buf, "%d\n", tz->forced_passive);
> -}
> -
> -static ssize_t
> -policy_store(struct device *dev, struct device_attribute *attr,
> -		    const char *buf, size_t count)
> -{
> -	int ret = -EINVAL;
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	struct thermal_governor *gov;
> -
> -	mutex_lock(&thermal_governor_lock);
> -
> -	gov = __find_governor(buf);
> -	if (!gov)
> -		goto exit;
> -
> -	tz->governor = gov;
> -	ret = count;
> -
> -exit:
> -	mutex_unlock(&thermal_governor_lock);
> -	return ret;
> -}
> -
> -static ssize_t
> -policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -
> -	return sprintf(buf, "%s\n", tz->governor->name);
> -}
> -
> -#ifdef CONFIG_THERMAL_EMULATION
> -static ssize_t
> -emul_temp_store(struct device *dev, struct device_attribute *attr,
> -		     const char *buf, size_t count)
> -{
> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> -	int ret = 0;
> -	unsigned long temperature;
> -
> -	if (kstrtoul(buf, 10, &temperature))
> -		return -EINVAL;
> -
> -	if (!tz->ops->set_emul_temp) {
> -		mutex_lock(&tz->lock);
> -		tz->emul_temperature = temperature;
> -		mutex_unlock(&tz->lock);
> -	} else {
> -		ret = tz->ops->set_emul_temp(tz, temperature);
> -	}
> -
> -	return ret ? ret : count;
> -}
> -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> -#endif/*CONFIG_THERMAL_EMULATION*/
> -
> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
> -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
> -
> -/* sys I/F for cooling device */
> -#define to_cooling_device(_dev)	\
> -	container_of(_dev, struct thermal_cooling_device, device)
> -
> -static ssize_t
> -thermal_cooling_device_type_show(struct device *dev,
> -				 struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -
> -	return sprintf(buf, "%s\n", cdev->type);
> -}
> -
> -static ssize_t
> -thermal_cooling_device_max_state_show(struct device *dev,
> -				      struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -	unsigned long state;
> -	int ret;
> -
> -	ret = cdev->ops->get_max_state(cdev, &state);
> -	if (ret)
> -		return ret;
> -	return sprintf(buf, "%ld\n", state);
> -}
> -
> -static ssize_t
> -thermal_cooling_device_cur_state_show(struct device *dev,
> -				      struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -	unsigned long state;
> -	int ret;
> -
> -	ret = cdev->ops->get_cur_state(cdev, &state);
> -	if (ret)
> -		return ret;
> -	return sprintf(buf, "%ld\n", state);
> -}
> -
> -static ssize_t
> -thermal_cooling_device_cur_state_store(struct device *dev,
> -				       struct device_attribute *attr,
> -				       const char *buf, size_t count)
> -{
> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> -	unsigned long state;
> -	int result;
> -
> -	if (!sscanf(buf, "%ld\n", &state))
> -		return -EINVAL;
> -
> -	if ((long)state < 0)
> -		return -EINVAL;
> -
> -	result = cdev->ops->set_cur_state(cdev, state);
> -	if (result)
> -		return result;
> -	return count;
> -}
> -
> -static struct device_attribute dev_attr_cdev_type =
> -__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> -static DEVICE_ATTR(max_state, 0444,
> -		   thermal_cooling_device_max_state_show, NULL);
> -static DEVICE_ATTR(cur_state, 0644,
> -		   thermal_cooling_device_cur_state_show,
> -		   thermal_cooling_device_cur_state_store);
> -
> -static ssize_t
> -thermal_cooling_device_trip_point_show(struct device *dev,
> -				       struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_instance *instance;
> -
> -	instance =
> -	    container_of(attr, struct thermal_instance, attr);
> -
> -	if (instance->trip == THERMAL_TRIPS_NONE)
> -		return sprintf(buf, "-1\n");
> -	else
> -		return sprintf(buf, "%d\n", instance->trip);
> -}
> -
> -/* Device management */
> -
> -#if defined(CONFIG_THERMAL_HWMON)
> -
> -/* hwmon sys I/F */
> -#include <linux/hwmon.h>
> -
> -/* thermal zone devices with the same type share one hwmon device */
> -struct thermal_hwmon_device {
> -	char type[THERMAL_NAME_LENGTH];
> -	struct device *device;
> -	int count;
> -	struct list_head tz_list;
> -	struct list_head node;
> -};
> -
> -struct thermal_hwmon_attr {
> -	struct device_attribute attr;
> -	char name[16];
> -};
> -
> -/* one temperature input for each thermal zone */
> -struct thermal_hwmon_temp {
> -	struct list_head hwmon_node;
> -	struct thermal_zone_device *tz;
> -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> -};
> -
> -static LIST_HEAD(thermal_hwmon_list);
> -
> -static ssize_t
> -name_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> -	return sprintf(buf, "%s\n", hwmon->type);
> -}
> -static DEVICE_ATTR(name, 0444, name_show, NULL);
> -
> -static ssize_t
> -temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
> -{
> -	long temperature;
> -	int ret;
> -	struct thermal_hwmon_attr *hwmon_attr
> -			= container_of(attr, struct thermal_hwmon_attr, attr);
> -	struct thermal_hwmon_temp *temp
> -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> -				       temp_input);
> -	struct thermal_zone_device *tz = temp->tz;
> -
> -	ret = thermal_zone_get_temp(tz, &temperature);
> -
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -static ssize_t
> -temp_crit_show(struct device *dev, struct device_attribute *attr,
> -		char *buf)
> -{
> -	struct thermal_hwmon_attr *hwmon_attr
> -			= container_of(attr, struct thermal_hwmon_attr, attr);
> -	struct thermal_hwmon_temp *temp
> -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> -				       temp_crit);
> -	struct thermal_zone_device *tz = temp->tz;
> -	long temperature;
> -	int ret;
> -
> -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> -	if (ret)
> -		return ret;
> -
> -	return sprintf(buf, "%ld\n", temperature);
> -}
> -
> -
> -static struct thermal_hwmon_device *
> -thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_device *hwmon;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> -		if (!strcmp(hwmon->type, tz->type)) {
> -			mutex_unlock(&thermal_list_lock);
> -			return hwmon;
> -		}
> -	mutex_unlock(&thermal_list_lock);
> -
> -	return NULL;
> -}
> -
> -/* Find the temperature input matching a given thermal zone */
> -static struct thermal_hwmon_temp *
> -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
> -			  const struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_temp *temp;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> -		if (temp->tz == tz) {
> -			mutex_unlock(&thermal_list_lock);
> -			return temp;
> -		}
> -	mutex_unlock(&thermal_list_lock);
> -
> -	return NULL;
> -}
> -
> -static int
> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_device *hwmon;
> -	struct thermal_hwmon_temp *temp;
> -	int new_hwmon_device = 1;
> -	int result;
> -
> -	hwmon = thermal_hwmon_lookup_by_type(tz);
> -	if (hwmon) {
> -		new_hwmon_device = 0;
> -		goto register_sys_interface;
> -	}
> -
> -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
> -	if (!hwmon)
> -		return -ENOMEM;
> -
> -	INIT_LIST_HEAD(&hwmon->tz_list);
> -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> -	hwmon->device = hwmon_device_register(NULL);
> -	if (IS_ERR(hwmon->device)) {
> -		result = PTR_ERR(hwmon->device);
> -		goto free_mem;
> -	}
> -	dev_set_drvdata(hwmon->device, hwmon);
> -	result = device_create_file(hwmon->device, &dev_attr_name);
> -	if (result)
> -		goto free_mem;
> -
> - register_sys_interface:
> -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> -	if (!temp) {
> -		result = -ENOMEM;
> -		goto unregister_name;
> -	}
> -
> -	temp->tz = tz;
> -	hwmon->count++;
> -
> -	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
> -		 "temp%d_input", hwmon->count);
> -	temp->temp_input.attr.attr.name = temp->temp_input.name;
> -	temp->temp_input.attr.attr.mode = 0444;
> -	temp->temp_input.attr.show = temp_input_show;
> -	sysfs_attr_init(&temp->temp_input.attr.attr);
> -	result = device_create_file(hwmon->device, &temp->temp_input.attr);
> -	if (result)
> -		goto free_temp_mem;
> -
> -	if (tz->ops->get_crit_temp) {
> -		unsigned long temperature;
> -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> -			snprintf(temp->temp_crit.name,
> -				 sizeof(temp->temp_crit.name),
> -				"temp%d_crit", hwmon->count);
> -			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
> -			temp->temp_crit.attr.attr.mode = 0444;
> -			temp->temp_crit.attr.show = temp_crit_show;
> -			sysfs_attr_init(&temp->temp_crit.attr.attr);
> -			result = device_create_file(hwmon->device,
> -						    &temp->temp_crit.attr);
> -			if (result)
> -				goto unregister_input;
> -		}
> -	}
> -
> -	mutex_lock(&thermal_list_lock);
> -	if (new_hwmon_device)
> -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	return 0;
> -
> - unregister_input:
> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> - free_temp_mem:
> -	kfree(temp);
> - unregister_name:
> -	if (new_hwmon_device) {
> -		device_remove_file(hwmon->device, &dev_attr_name);
> -		hwmon_device_unregister(hwmon->device);
> -	}
> - free_mem:
> -	if (new_hwmon_device)
> -		kfree(hwmon);
> -
> -	return result;
> -}
> -
> -static void
> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -	struct thermal_hwmon_device *hwmon;
> -	struct thermal_hwmon_temp *temp;
> -
> -	hwmon = thermal_hwmon_lookup_by_type(tz);
> -	if (unlikely(!hwmon)) {
> -		/* Should never happen... */
> -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> -		return;
> -	}
> -
> -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> -	if (unlikely(!temp)) {
> -		/* Should never happen... */
> -		dev_dbg(&tz->device, "temperature input lookup failed!\n");
> -		return;
> -	}
> -
> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> -	if (tz->ops->get_crit_temp)
> -		device_remove_file(hwmon->device, &temp->temp_crit.attr);
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_del(&temp->hwmon_node);
> -	kfree(temp);
> -	if (!list_empty(&hwmon->tz_list)) {
> -		mutex_unlock(&thermal_list_lock);
> -		return;
> -	}
> -	list_del(&hwmon->node);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	device_remove_file(hwmon->device, &dev_attr_name);
> -	hwmon_device_unregister(hwmon->device);
> -	kfree(hwmon);
> -}
> -#else
> -static int
> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -	return 0;
> -}
> -
> -static void
> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> -{
> -}
> -#endif
> -
> -/**
> - * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
> - * @tz:		thermal zone device
> - * @trip:	indicates which trip point the cooling devices is
> - *		associated with in this thermal zone.
> - * @cdev:	thermal cooling device
> - *
> - * This function is usually called in the thermal zone device .bind callback.
> - */
> -int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> -				     int trip,
> -				     struct thermal_cooling_device *cdev,
> -				     unsigned long upper, unsigned long lower)
> -{
> -	struct thermal_instance *dev;
> -	struct thermal_instance *pos;
> -	struct thermal_zone_device *pos1;
> -	struct thermal_cooling_device *pos2;
> -	unsigned long max_state;
> -	int result;
> -
> -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> -		return -EINVAL;
> -
> -	list_for_each_entry(pos1, &thermal_tz_list, node) {
> -		if (pos1 == tz)
> -			break;
> -	}
> -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> -		if (pos2 == cdev)
> -			break;
> -	}
> -
> -	if (tz != pos1 || cdev != pos2)
> -		return -EINVAL;
> -
> -	cdev->ops->get_max_state(cdev, &max_state);
> -
> -	/* lower default 0, upper default max_state */
> -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> -
> -	if (lower > upper || upper > max_state)
> -		return -EINVAL;
> -
> -	dev =
> -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> -	if (!dev)
> -		return -ENOMEM;
> -	dev->tz = tz;
> -	dev->cdev = cdev;
> -	dev->trip = trip;
> -	dev->upper = upper;
> -	dev->lower = lower;
> -	dev->target = THERMAL_NO_TARGET;
> -
> -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> -	if (result)
> -		goto free_mem;
> -
> -	sprintf(dev->name, "cdev%d", dev->id);
> -	result =
> -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
> -	if (result)
> -		goto release_idr;
> -
> -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> -	sysfs_attr_init(&dev->attr.attr);
> -	dev->attr.attr.name = dev->attr_name;
> -	dev->attr.attr.mode = 0444;
> -	dev->attr.show = thermal_cooling_device_trip_point_show;
> -	result = device_create_file(&tz->device, &dev->attr);
> -	if (result)
> -		goto remove_symbol_link;
> -
> -	mutex_lock(&tz->lock);
> -	mutex_lock(&cdev->lock);
> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> -		result = -EEXIST;
> -		break;
> -	}
> -	if (!result) {
> -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> -		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
> -	}
> -	mutex_unlock(&cdev->lock);
> -	mutex_unlock(&tz->lock);
> -
> -	if (!result)
> -		return 0;
> -
> -	device_remove_file(&tz->device, &dev->attr);
> -remove_symbol_link:
> -	sysfs_remove_link(&tz->device.kobj, dev->name);
> -release_idr:
> -	release_idr(&tz->idr, &tz->lock, dev->id);
> -free_mem:
> -	kfree(dev);
> -	return result;
> -}
> -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> -
> -/**
> - * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
> - * @tz:		thermal zone device
> - * @trip:	indicates which trip point the cooling devices is
> - *		associated with in this thermal zone.
> - * @cdev:	thermal cooling device
> - *
> - * This function is usually called in the thermal zone device .unbind callback.
> - */
> -int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> -				       int trip,
> -				       struct thermal_cooling_device *cdev)
> -{
> -	struct thermal_instance *pos, *next;
> -
> -	mutex_lock(&tz->lock);
> -	mutex_lock(&cdev->lock);
> -	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> -			list_del(&pos->tz_node);
> -			list_del(&pos->cdev_node);
> -			mutex_unlock(&cdev->lock);
> -			mutex_unlock(&tz->lock);
> -			goto unbind;
> -		}
> -	}
> -	mutex_unlock(&cdev->lock);
> -	mutex_unlock(&tz->lock);
> -
> -	return -ENODEV;
> -
> -unbind:
> -	device_remove_file(&tz->device, &pos->attr);
> -	sysfs_remove_link(&tz->device.kobj, pos->name);
> -	release_idr(&tz->idr, &tz->lock, pos->id);
> -	kfree(pos);
> -	return 0;
> -}
> -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> -
> -static void thermal_release(struct device *dev)
> -{
> -	struct thermal_zone_device *tz;
> -	struct thermal_cooling_device *cdev;
> -
> -	if (!strncmp(dev_name(dev), "thermal_zone",
> -		     sizeof("thermal_zone") - 1)) {
> -		tz = to_thermal_zone(dev);
> -		kfree(tz);
> -	} else {
> -		cdev = to_cooling_device(dev);
> -		kfree(cdev);
> -	}
> -}
> -
> -static struct class thermal_class = {
> -	.name = "thermal",
> -	.dev_release = thermal_release,
> -};
> -
> -/**
> - * thermal_cooling_device_register - register a new thermal cooling device
> - * @type:	the thermal cooling device type.
> - * @devdata:	device private data.
> - * @ops:		standard thermal cooling devices callbacks.
> - */
> -struct thermal_cooling_device *
> -thermal_cooling_device_register(char *type, void *devdata,
> -				const struct thermal_cooling_device_ops *ops)
> -{
> -	struct thermal_cooling_device *cdev;
> -	int result;
> -
> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> -	    !ops->set_cur_state)
> -		return ERR_PTR(-EINVAL);
> -
> -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> -	if (!cdev)
> -		return ERR_PTR(-ENOMEM);
> -
> -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> -	if (result) {
> -		kfree(cdev);
> -		return ERR_PTR(result);
> -	}
> -
> -	strcpy(cdev->type, type ? : "");
> -	mutex_init(&cdev->lock);
> -	INIT_LIST_HEAD(&cdev->thermal_instances);
> -	cdev->ops = ops;
> -	cdev->updated = true;
> -	cdev->device.class = &thermal_class;
> -	cdev->devdata = devdata;
> -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> -	result = device_register(&cdev->device);
> -	if (result) {
> -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> -		kfree(cdev);
> -		return ERR_PTR(result);
> -	}
> -
> -	/* sys I/F */
> -	if (type) {
> -		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -	result = device_create_file(&cdev->device, &dev_attr_max_state);
> -	if (result)
> -		goto unregister;
> -
> -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> -	if (result)
> -		goto unregister;
> -
> -	/* Add 'this' new cdev to the global cdev list */
> -	mutex_lock(&thermal_list_lock);
> -	list_add(&cdev->node, &thermal_cdev_list);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	/* Update binding information for 'this' new cdev */
> -	bind_cdev(cdev);
> -
> -	return cdev;
> -
> -unregister:
> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> -	device_unregister(&cdev->device);
> -	return ERR_PTR(result);
> -}
> -EXPORT_SYMBOL(thermal_cooling_device_register);
> -
> -/**
> - * thermal_cooling_device_unregister - removes the registered thermal cooling device
> - * @cdev:	the thermal cooling device to remove.
> - *
> - * thermal_cooling_device_unregister() must be called when the device is no
> - * longer needed.
> - */
> -void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
> -{
> -	int i;
> -	const struct thermal_zone_params *tzp;
> -	struct thermal_zone_device *tz;
> -	struct thermal_cooling_device *pos = NULL;
> -
> -	if (!cdev)
> -		return;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(pos, &thermal_cdev_list, node)
> -	    if (pos == cdev)
> -		break;
> -	if (pos != cdev) {
> -		/* thermal cooling device not found */
> -		mutex_unlock(&thermal_list_lock);
> -		return;
> -	}
> -	list_del(&cdev->node);
> -
> -	/* Unbind all thermal zones associated with 'this' cdev */
> -	list_for_each_entry(tz, &thermal_tz_list, node) {
> -		if (tz->ops->unbind) {
> -			tz->ops->unbind(tz, cdev);
> -			continue;
> -		}
> -
> -		if (!tz->tzp || !tz->tzp->tbp)
> -			continue;
> -
> -		tzp = tz->tzp;
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev == cdev) {
> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> -				tzp->tbp[i].cdev = NULL;
> -			}
> -		}
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -
> -	if (cdev->type[0])
> -		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> -	device_remove_file(&cdev->device, &dev_attr_max_state);
> -	device_remove_file(&cdev->device, &dev_attr_cur_state);
> -
> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> -	device_unregister(&cdev->device);
> -	return;
> -}
> -EXPORT_SYMBOL(thermal_cooling_device_unregister);
> -
> -void thermal_cdev_update(struct thermal_cooling_device *cdev)
> -{
> -	struct thermal_instance *instance;
> -	unsigned long target = 0;
> -
> -	/* cooling device is updated*/
> -	if (cdev->updated)
> -		return;
> -
> -	mutex_lock(&cdev->lock);
> -	/* Make sure cdev enters the deepest cooling state */
> -	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
> -		if (instance->target == THERMAL_NO_TARGET)
> -			continue;
> -		if (instance->target > target)
> -			target = instance->target;
> -	}
> -	mutex_unlock(&cdev->lock);
> -	cdev->ops->set_cur_state(cdev, target);
> -	cdev->updated = true;
> -}
> -EXPORT_SYMBOL(thermal_cdev_update);
> -
> -/**
> - * notify_thermal_framework - Sensor drivers use this API to notify framework
> - * @tz:		thermal zone device
> - * @trip:	indicates which trip point has been crossed
> - *
> - * This function handles the trip events from sensor drivers. It starts
> - * throttling the cooling devices according to the policy configured.
> - * For CRITICAL and HOT trip points, this notifies the respective drivers,
> - * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> - * The throttling policy is based on the configured platform data; if no
> - * platform data is provided, this uses the step_wise throttling policy.
> - */
> -void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> -{
> -	handle_thermal_trip(tz, trip);
> -}
> -EXPORT_SYMBOL(notify_thermal_framework);
> -
> -/**
> - * create_trip_attrs - create attributes for trip points
> - * @tz:		the thermal zone device
> - * @mask:	Writeable trip point bitmap.
> - */
> -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> -{
> -	int indx;
> -	int size = sizeof(struct thermal_attr) * tz->trips;
> -
> -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> -	if (!tz->trip_type_attrs)
> -		return -ENOMEM;
> -
> -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> -	if (!tz->trip_temp_attrs) {
> -		kfree(tz->trip_type_attrs);
> -		return -ENOMEM;
> -	}
> -
> -	if (tz->ops->get_trip_hyst) {
> -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> -		if (!tz->trip_hyst_attrs) {
> -			kfree(tz->trip_type_attrs);
> -			kfree(tz->trip_temp_attrs);
> -			return -ENOMEM;
> -		}
> -	}
> -
> -
> -	for (indx = 0; indx < tz->trips; indx++) {
> -		/* create trip type attribute */
> -		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
> -			 "trip_point_%d_type", indx);
> -
> -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> -		tz->trip_type_attrs[indx].attr.attr.name =
> -						tz->trip_type_attrs[indx].name;
> -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> -
> -		device_create_file(&tz->device,
> -				   &tz->trip_type_attrs[indx].attr);
> -
> -		/* create trip temp attribute */
> -		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
> -			 "trip_point_%d_temp", indx);
> -
> -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> -		tz->trip_temp_attrs[indx].attr.attr.name =
> -						tz->trip_temp_attrs[indx].name;
> -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> -		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
> -		if (mask & (1 << indx)) {
> -			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
> -			tz->trip_temp_attrs[indx].attr.store =
> -							trip_point_temp_store;
> -		}
> -
> -		device_create_file(&tz->device,
> -				   &tz->trip_temp_attrs[indx].attr);
> -
> -		/* create Optional trip hyst attribute */
> -		if (!tz->ops->get_trip_hyst)
> -			continue;
> -		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
> -			 "trip_point_%d_hyst", indx);
> -
> -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> -		tz->trip_hyst_attrs[indx].attr.attr.name =
> -					tz->trip_hyst_attrs[indx].name;
> -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> -		if (tz->ops->set_trip_hyst) {
> -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> -			tz->trip_hyst_attrs[indx].attr.store =
> -					trip_point_hyst_store;
> -		}
> -
> -		device_create_file(&tz->device,
> -				   &tz->trip_hyst_attrs[indx].attr);
> -	}
> -	return 0;
> -}
> -
> -static void remove_trip_attrs(struct thermal_zone_device *tz)
> -{
> -	int indx;
> -
> -	for (indx = 0; indx < tz->trips; indx++) {
> -		device_remove_file(&tz->device,
> -				   &tz->trip_type_attrs[indx].attr);
> -		device_remove_file(&tz->device,
> -				   &tz->trip_temp_attrs[indx].attr);
> -		if (tz->ops->get_trip_hyst)
> -			device_remove_file(&tz->device,
> -				  &tz->trip_hyst_attrs[indx].attr);
> -	}
> -	kfree(tz->trip_type_attrs);
> -	kfree(tz->trip_temp_attrs);
> -	kfree(tz->trip_hyst_attrs);
> -}
> -
> -/**
> - * thermal_zone_device_register - register a new thermal zone device
> - * @type:	the thermal zone device type
> - * @trips:	the number of trip points the thermal zone support
> - * @mask:	a bit string indicating the writeablility of trip points
> - * @devdata:	private device data
> - * @ops:	standard thermal zone device callbacks
> - * @tzp:	thermal zone platform parameters
> - * @passive_delay: number of milliseconds to wait between polls when
> - *		   performing passive cooling
> - * @polling_delay: number of milliseconds to wait between polls when checking
> - *		   whether trip points have been crossed (0 for interrupt
> - *		   driven systems)
> - *
> - * thermal_zone_device_unregister() must be called when the device is no
> - * longer needed. The passive cooling depends on the .get_trend() return value.
> - */
> -struct thermal_zone_device *thermal_zone_device_register(const char *type,
> -	int trips, int mask, void *devdata,
> -	const struct thermal_zone_device_ops *ops,
> -	const struct thermal_zone_params *tzp,
> -	int passive_delay, int polling_delay)
> -{
> -	struct thermal_zone_device *tz;
> -	enum thermal_trip_type trip_type;
> -	int result;
> -	int count;
> -	int passive = 0;
> -
> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (!ops || !ops->get_temp)
> -		return ERR_PTR(-EINVAL);
> -
> -	if (trips > 0 && !ops->get_trip_type)
> -		return ERR_PTR(-EINVAL);
> -
> -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> -	if (!tz)
> -		return ERR_PTR(-ENOMEM);
> -
> -	INIT_LIST_HEAD(&tz->thermal_instances);
> -	idr_init(&tz->idr);
> -	mutex_init(&tz->lock);
> -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> -	if (result) {
> -		kfree(tz);
> -		return ERR_PTR(result);
> -	}
> -
> -	strcpy(tz->type, type ? : "");
> -	tz->ops = ops;
> -	tz->tzp = tzp;
> -	tz->device.class = &thermal_class;
> -	tz->devdata = devdata;
> -	tz->trips = trips;
> -	tz->passive_delay = passive_delay;
> -	tz->polling_delay = polling_delay;
> -
> -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> -	result = device_register(&tz->device);
> -	if (result) {
> -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> -		kfree(tz);
> -		return ERR_PTR(result);
> -	}
> -
> -	/* sys I/F */
> -	if (type) {
> -		result = device_create_file(&tz->device, &dev_attr_type);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -	result = device_create_file(&tz->device, &dev_attr_temp);
> -	if (result)
> -		goto unregister;
> -
> -	if (ops->get_mode) {
> -		result = device_create_file(&tz->device, &dev_attr_mode);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -	result = create_trip_attrs(tz, mask);
> -	if (result)
> -		goto unregister;
> -
> -	for (count = 0; count < trips; count++) {
> -		tz->ops->get_trip_type(tz, count, &trip_type);
> -		if (trip_type == THERMAL_TRIP_PASSIVE)
> -			passive = 1;
> -	}
> -
> -	if (!passive) {
> -		result = device_create_file(&tz->device, &dev_attr_passive);
> -		if (result)
> -			goto unregister;
> -	}
> -
> -#ifdef CONFIG_THERMAL_EMULATION
> -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> -	if (result)
> -		goto unregister;
> -#endif
> -	/* Create policy attribute */
> -	result = device_create_file(&tz->device, &dev_attr_policy);
> -	if (result)
> -		goto unregister;
> -
> -	/* Update 'this' zone's governor information */
> -	mutex_lock(&thermal_governor_lock);
> -
> -	if (tz->tzp)
> -		tz->governor = __find_governor(tz->tzp->governor_name);
> -	else
> -		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
> -
> -	mutex_unlock(&thermal_governor_lock);
> -
> -	result = thermal_add_hwmon_sysfs(tz);
> -	if (result)
> -		goto unregister;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_add_tail(&tz->node, &thermal_tz_list);
> -	mutex_unlock(&thermal_list_lock);
> -
> -	/* Bind cooling devices for this zone */
> -	bind_tz(tz);
> -
> -	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
> -
> -	thermal_zone_device_update(tz);
> -
> -	if (!result)
> -		return tz;
> -
> -unregister:
> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> -	device_unregister(&tz->device);
> -	return ERR_PTR(result);
> -}
> -EXPORT_SYMBOL(thermal_zone_device_register);
> -
> -/**
> - * thermal_device_unregister - removes the registered thermal zone device
> - * @tz: the thermal zone device to remove
> - */
> -void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> -{
> -	int i;
> -	const struct thermal_zone_params *tzp;
> -	struct thermal_cooling_device *cdev;
> -	struct thermal_zone_device *pos = NULL;
> -
> -	if (!tz)
> -		return;
> -
> -	tzp = tz->tzp;
> -
> -	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(pos, &thermal_tz_list, node)
> -	    if (pos == tz)
> -		break;
> -	if (pos != tz) {
> -		/* thermal zone device not found */
> -		mutex_unlock(&thermal_list_lock);
> -		return;
> -	}
> -	list_del(&tz->node);
> -
> -	/* Unbind all cdevs associated with 'this' thermal zone */
> -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> -		if (tz->ops->unbind) {
> -			tz->ops->unbind(tz, cdev);
> -			continue;
> -		}
> -
> -		if (!tzp || !tzp->tbp)
> -			break;
> -
> -		for (i = 0; i < tzp->num_tbps; i++) {
> -			if (tzp->tbp[i].cdev == cdev) {
> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> -				tzp->tbp[i].cdev = NULL;
> -			}
> -		}
> -	}
> -
> -	mutex_unlock(&thermal_list_lock);
> -
> -	thermal_zone_device_set_polling(tz, 0);
> -
> -	if (tz->type[0])
> -		device_remove_file(&tz->device, &dev_attr_type);
> -	device_remove_file(&tz->device, &dev_attr_temp);
> -	if (tz->ops->get_mode)
> -		device_remove_file(&tz->device, &dev_attr_mode);
> -	device_remove_file(&tz->device, &dev_attr_policy);
> -	remove_trip_attrs(tz);
> -	tz->governor = NULL;
> -
> -	thermal_remove_hwmon_sysfs(tz);
> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> -	idr_destroy(&tz->idr);
> -	mutex_destroy(&tz->lock);
> -	device_unregister(&tz->device);
> -	return;
> -}
> -EXPORT_SYMBOL(thermal_zone_device_unregister);
> -
> -#ifdef CONFIG_NET
> -static struct genl_family thermal_event_genl_family = {
> -	.id = GENL_ID_GENERATE,
> -	.name = THERMAL_GENL_FAMILY_NAME,
> -	.version = THERMAL_GENL_VERSION,
> -	.maxattr = THERMAL_GENL_ATTR_MAX,
> -};
> -
> -static struct genl_multicast_group thermal_event_mcgrp = {
> -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> -};
> -
> -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> -					enum events event)
> -{
> -	struct sk_buff *skb;
> -	struct nlattr *attr;
> -	struct thermal_genl_event *thermal_event;
> -	void *msg_header;
> -	int size;
> -	int result;
> -	static unsigned int thermal_event_seqnum;
> -
> -	if (!tz)
> -		return -EINVAL;
> -
> -	/* allocate memory */
> -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> -	       nla_total_size(0);
> -
> -	skb = genlmsg_new(size, GFP_ATOMIC);
> -	if (!skb)
> -		return -ENOMEM;
> -
> -	/* add the genetlink message header */
> -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> -				 &thermal_event_genl_family, 0,
> -				 THERMAL_GENL_CMD_EVENT);
> -	if (!msg_header) {
> -		nlmsg_free(skb);
> -		return -ENOMEM;
> -	}
> -
> -	/* fill the data */
> -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> -			   sizeof(struct thermal_genl_event));
> -
> -	if (!attr) {
> -		nlmsg_free(skb);
> -		return -EINVAL;
> -	}
> -
> -	thermal_event = nla_data(attr);
> -	if (!thermal_event) {
> -		nlmsg_free(skb);
> -		return -EINVAL;
> -	}
> -
> -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> -
> -	thermal_event->orig = tz->id;
> -	thermal_event->event = event;
> -
> -	/* send multicast genetlink message */
> -	result = genlmsg_end(skb, msg_header);
> -	if (result < 0) {
> -		nlmsg_free(skb);
> -		return result;
> -	}
> -
> -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
> -	if (result)
> -		dev_err(&tz->device, "Failed to send netlink event:%d", result);
> -
> -	return result;
> -}
> -EXPORT_SYMBOL(thermal_generate_netlink_event);
> -
> -static int genetlink_init(void)
> -{
> -	int result;
> -
> -	result = genl_register_family(&thermal_event_genl_family);
> -	if (result)
> -		return result;
> -
> -	result = genl_register_mc_group(&thermal_event_genl_family,
> -					&thermal_event_mcgrp);
> -	if (result)
> -		genl_unregister_family(&thermal_event_genl_family);
> -	return result;
> -}
> -
> -static void genetlink_exit(void)
> -{
> -	genl_unregister_family(&thermal_event_genl_family);
> -}
> -#else /* !CONFIG_NET */
> -static inline int genetlink_init(void) { return 0; }
> -static inline void genetlink_exit(void) {}
> -#endif /* !CONFIG_NET */
> -
> -static int __init thermal_init(void)
> -{
> -	int result = 0;
> -
> -	result = class_register(&thermal_class);
> -	if (result) {
> -		idr_destroy(&thermal_tz_idr);
> -		idr_destroy(&thermal_cdev_idr);
> -		mutex_destroy(&thermal_idr_lock);
> -		mutex_destroy(&thermal_list_lock);
> -		return result;
> -	}
> -	result = genetlink_init();
> -	return result;
> -}
> -
> -static void __exit thermal_exit(void)
> -{
> -	class_unregister(&thermal_class);
> -	idr_destroy(&thermal_tz_idr);
> -	idr_destroy(&thermal_cdev_idr);
> -	mutex_destroy(&thermal_idr_lock);
> -	mutex_destroy(&thermal_list_lock);
> -	genetlink_exit();
> -}
> -
> -fs_initcall(thermal_init);
> -module_exit(thermal_exit);
>

Re: [RFC, 2/5] Thermal: thermal framework registration failure case cleanup

[Eduardo Valentin]

On 26-03-2013 12:26, Zhang Rui wrote:
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
>

Could you please describe why these resource releases are not required 
anymore? Even on thermal_exit.

> ---
> drivers/thermal/thermal_core.c |   12 ++----------
>   1 file changed, 2 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 5b7863a..845ed6e 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1863,13 +1863,9 @@ static int __init thermal_init(void)
>   	int result = 0;
>
>   	result = class_register(&thermal_class);
> -	if (result) {
> -		idr_destroy(&thermal_tz_idr);
> -		idr_destroy(&thermal_cdev_idr);
> -		mutex_destroy(&thermal_idr_lock);
> -		mutex_destroy(&thermal_list_lock);
> +	if (result)
>   		return result;
> -	}
> +
>   	result = genetlink_init();
>   	return result;
>   }
> @@ -1877,10 +1873,6 @@ static int __init thermal_init(void)
>   static void __exit thermal_exit(void)
>   {
>   	class_unregister(&thermal_class);
> -	idr_destroy(&thermal_tz_idr);
> -	idr_destroy(&thermal_cdev_idr);
> -	mutex_destroy(&thermal_idr_lock);
> -	mutex_destroy(&thermal_list_lock);
>   	genetlink_exit();
>   }
>
>

Re: [RFC,3/5] Thermal: build thermal governors into thermal_sys module

[Eduardo Valentin]

Hi Rui,

On 26-03-2013 12:26, Zhang Rui wrote:
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
>
> ---
> drivers/thermal/Makefile       |    6 +++---
>   drivers/thermal/fair_share.c   |   15 ++-------------
>   drivers/thermal/step_wise.c    |   16 ++--------------
>   drivers/thermal/thermal_core.c |   36 ++++++++++++++++++++++++++++++++++--
>   drivers/thermal/thermal_core.h |   25 +++++++++++++++++++++++++
>   drivers/thermal/user_space.c   |   15 ++-------------
>   include/linux/thermal.h        |    1 -
>   7 files changed, 68 insertions(+), 46 deletions(-)
>
> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> index b2009bd..b7fffc7 100644
> --- a/drivers/thermal/Makefile
> +++ b/drivers/thermal/Makefile
> @@ -6,9 +6,9 @@ obj-$(CONFIG_THERMAL)		+= thermal_sys.o
>   thermal_sys-y			+= thermal_core.o
>
>   # governors
> -obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> -obj-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
> -obj-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
> +thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> +thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
> +thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
>
>   # cpufreq cooling
>   obj-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
> diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c
> index 792479f..944ba2f 100644
> --- a/drivers/thermal/fair_share.c
> +++ b/drivers/thermal/fair_share.c
> @@ -22,9 +22,6 @@
>    * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    */
>
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
>   #include <linux/thermal.h>
>
>   #include "thermal_core.h"
> @@ -111,23 +108,15 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip)
>   static struct thermal_governor thermal_gov_fair_share = {
>   	.name		= "fair_share",
>   	.throttle	= fair_share_throttle,
> -	.owner		= THIS_MODULE,
>   };
>
> -static int __init thermal_gov_fair_share_init(void)
> +int thermal_gov_fair_share_register(void)
>   {
>   	return thermal_register_governor(&thermal_gov_fair_share);
>   }
>
> -static void __exit thermal_gov_fair_share_exit(void)
> +void thermal_gov_fair_share_unregister(void)
>   {
>   	thermal_unregister_governor(&thermal_gov_fair_share);
>   }
>
> -/* This should load after thermal framework */
> -fs_initcall(thermal_gov_fair_share_init);
> -module_exit(thermal_gov_fair_share_exit);
> -
> -MODULE_AUTHOR("Durgadoss R");
> -MODULE_DESCRIPTION("A simple weight based thermal throttling governor");
> -MODULE_LICENSE("GPL");
> diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
> index 407cde3..a6c9666 100644
> --- a/drivers/thermal/step_wise.c
> +++ b/drivers/thermal/step_wise.c
> @@ -22,9 +22,6 @@
>    * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    */
>
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
>   #include <linux/thermal.h>
>
>   #include "thermal_core.h"
> @@ -180,23 +177,14 @@ static int step_wise_throttle(struct thermal_zone_device *tz, int trip)
>   static struct thermal_governor thermal_gov_step_wise = {
>   	.name		= "step_wise",
>   	.throttle	= step_wise_throttle,
> -	.owner		= THIS_MODULE,
>   };
>
> -static int __init thermal_gov_step_wise_init(void)
> +int thermal_gov_step_wise_register(void)
>   {
>   	return thermal_register_governor(&thermal_gov_step_wise);
>   }
>
> -static void __exit thermal_gov_step_wise_exit(void)
> +void thermal_gov_step_wise_unregister(void)
>   {
>   	thermal_unregister_governor(&thermal_gov_step_wise);
>   }
> -
> -/* This should load after thermal framework */
> -fs_initcall(thermal_gov_step_wise_init);
> -module_exit(thermal_gov_step_wise_exit);
> -
> -MODULE_AUTHOR("Durgadoss R");
> -MODULE_DESCRIPTION("A step-by-step thermal throttling governor");
> -MODULE_LICENSE("GPL");
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 845ed6e..eac9745 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1858,22 +1858,54 @@ static inline int genetlink_init(void) { return 0; }
>   static inline void genetlink_exit(void) {}
>   #endif /* !CONFIG_NET */
>
> +static int __init thermal_register_governors(void)
> +{
> +	int result;
> +
> +	result = thermal_gov_step_wise_register();
> +	if (result)
> +		return result;
> +
> +	result = thermal_gov_fair_share_register();
> +	if (result)
> +		return result;
> +
> +	result = thermal_gov_user_space_register();
> +
> +	return result;

Just do a
+	return thermal_gov_user_space_register();

Or better, add err messages in the fail path.

> +}
> +
> +static void __exit thermal_unregister_governors(void)
> +{
> +	thermal_gov_step_wise_unregister();
> +	thermal_gov_fair_share_unregister();
> +	thermal_gov_user_space_unregister();
> +}
> +
>   static int __init thermal_init(void)
>   {
> -	int result = 0;
> +	int result;
> +
> +	result = thermal_register_governors();
> +	if (result)
> +		return result;
>
>   	result = class_register(&thermal_class);
>   	if (result)
>   		return result;
>
>   	result = genetlink_init();
> +	if (result)
> +		class_unregister(&thermal_class);
> +
>   	return result;

ditto.

>   }
>
>   static void __exit thermal_exit(void)
>   {
> -	class_unregister(&thermal_class);
>   	genetlink_exit();
> +	class_unregister(&thermal_class);
> +	thermal_unregister_governors();
>   }
>
>   fs_initcall(thermal_init);
> diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
> index 0d3205a..f84ea0f 100644
> --- a/drivers/thermal/thermal_core.h
> +++ b/drivers/thermal/thermal_core.h
> @@ -50,4 +50,29 @@ struct thermal_instance {
>   	struct list_head cdev_node; /* node in cdev->thermal_instances */
>   };
>
> +
> +#ifdef CONFIG_THERMAL_GOV_STEP_WISE
> +extern int thermal_gov_step_wise_register(void);
> +extern void thermal_gov_step_wise_unregister(void);

As you are compiling everything in same binary, I don't think you need 
externs there.

> +#else
> +static inline int thermal_gov_step_wise_register(void) { return 0; }
> +static inline void thermal_gov_step_wise_unregister(void) {}
> +#endif /* CONFIG_THERMAL_GOV_STEP_WISE */
> +
> +#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
> +extern int thermal_gov_fair_share_register(void);
> +extern void thermal_gov_fair_share_unregister(void);
>

ditto.

  +#else
> +static inline int thermal_gov_fair_share_register(void) { return 0; }
> +static inline void thermal_gov_fair_share_unregister(void) {}
> +#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */
> +
> +#ifdef CONFIG_THERMAL_GOV_USER_SPACE
> +extern int thermal_gov_user_space_register(void);
> +extern void thermal_gov_user_space_unregister(void);

ditto.

> +#else
> +static inline int thermal_gov_user_space_register(void) { return 0; }
> +static inline void thermal_gov_user_space_unregister(void) {}
> +#endif /* CONFIG_THERMAL_GOV_USER_SPACE */
> +
>   #endif /* __THERMAL_CORE_H__ */
> diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
> index 6bbb380..10adcdd 100644
> --- a/drivers/thermal/user_space.c
> +++ b/drivers/thermal/user_space.c
> @@ -22,9 +22,6 @@
>    * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    */
>
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/module.h>
>   #include <linux/thermal.h>
>
>   #include "thermal_core.h"
> @@ -46,23 +43,15 @@ static int notify_user_space(struct thermal_zone_device *tz, int trip)
>   static struct thermal_governor thermal_gov_user_space = {
>   	.name		= "user_space",
>   	.throttle	= notify_user_space,
> -	.owner		= THIS_MODULE,
>   };
>
> -static int __init thermal_gov_user_space_init(void)
> +int thermal_gov_user_space_register(void)
>   {
>   	return thermal_register_governor(&thermal_gov_user_space);
>   }
>
> -static void __exit thermal_gov_user_space_exit(void)
> +void thermal_gov_user_space_unregister(void)
>   {
>   	thermal_unregister_governor(&thermal_gov_user_space);
>   }
>
> -/* This should load after thermal framework */
> -fs_initcall(thermal_gov_user_space_init);
> -module_exit(thermal_gov_user_space_exit);
> -
> -MODULE_AUTHOR("Durgadoss R");
> -MODULE_DESCRIPTION("A user space Thermal notifier");
> -MODULE_LICENSE("GPL");
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index f0bd7f9..2eeec01 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -184,7 +184,6 @@ struct thermal_governor {
>   	char name[THERMAL_NAME_LENGTH];
>   	int (*throttle)(struct thermal_zone_device *tz, int trip);
>   	struct list_head	governor_list;
> -	struct module		*owner;
>   };
>
>   /* Structure that holds binding parameters for a zone */
>

Re: [RFC,4/5] Thermal: governor API cleanup

[Eduardo Valentin]

On 26-03-2013 12:26, Zhang Rui wrote:
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
>
> ---
> drivers/thermal/thermal_core.c |    2 --
>   drivers/thermal/thermal_core.h |    2 ++
>   include/linux/thermal.h        |    3 ---

Please also clean Documentation/thermal/sysfs_api.txt

>   3 files changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index eac9745..f645757 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -99,7 +99,6 @@ int thermal_register_governor(struct thermal_governor *governor)
>
>   	return err;
>   }
> -EXPORT_SYMBOL_GPL(thermal_register_governor);
>
>   void thermal_unregister_governor(struct thermal_governor *governor)
>   {
> @@ -127,7 +126,6 @@ void thermal_unregister_governor(struct thermal_governor *governor)
>   	mutex_unlock(&thermal_governor_lock);
>   	return;
>   }
> -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
>
>   static int get_idr(struct idr *idr, struct mutex *lock, int *id)
>   {
> diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
> index f84ea0f..a1f8278 100644
> --- a/drivers/thermal/thermal_core.h
> +++ b/drivers/thermal/thermal_core.h
> @@ -50,6 +50,8 @@ struct thermal_instance {
>   	struct list_head cdev_node; /* node in cdev->thermal_instances */
>   };
>
> +extern int thermal_register_governor(struct thermal_governor *);
> +extern void thermal_unregister_governor(struct thermal_governor *);

Does this really need to be extern?

>
>   #ifdef CONFIG_THERMAL_GOV_STEP_WISE
>   extern int thermal_gov_step_wise_register(void);
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index 2eeec01..af03ea6 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -243,9 +243,6 @@ struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
>   void thermal_cdev_update(struct thermal_cooling_device *);
>   void notify_thermal_framework(struct thermal_zone_device *, int);
>
> -int thermal_register_governor(struct thermal_governor *);
> -void thermal_unregister_governor(struct thermal_governor *);
> -
>   #ifdef CONFIG_NET
>   extern int thermal_generate_netlink_event(struct thermal_zone_device *tz,
>   						enum events event);
>

Re: [RFC,1/5] Thermal: rename thermal_sys.c to thermal_core.c

[Zhang Rui]

On Tue, 2013-03-26 at 18:04 -0400, Eduardo Valentin wrote:
> Hi Rui,
> 
> A side note:
> I'd really appreciate if you could copy on your patches on 
> drivers/thermal/. I had some issues with TI server and got un subscribed 
> from linux-pm. Now I will try to catch up any way,
> 
sure.

> Some comments.
> 
> On 26-03-2013 12:26, Zhang Rui wrote:
> > No functional change in this patch.
> >
> 
> Just a better description would also help on code version control.
> 
will add it in V2.

> > Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> 
> Apart from minor comments, I agreed with this change. So feel free to 
> add my:
> 
> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
> 
thanks!

> >
> > ---
> > drivers/thermal/Makefile       |    1 +
> >   drivers/thermal/thermal_core.c | 1888 ++++++++++++++++++++++++++++++++++++++++
> >   drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
> 
> When sending renames, use git format-patch --find-renames, it makes a 
> better summary of what you have done, specially if you have changed 
> something in the file while renaming.
> 
a useful tip. thanks!
> >   3 files changed, 1889 insertions(+), 1888 deletions(-)
> >   create mode 100644 drivers/thermal/thermal_core.c
> >   delete mode 100644 drivers/thermal/thermal_sys.c
> >
> > diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> > index d3a2b38..b2009bd 100644
> > --- a/drivers/thermal/Makefile
> > +++ b/drivers/thermal/Makefile
> > @@ -3,6 +3,7 @@
> >   #
> >
> >   obj-$(CONFIG_THERMAL)		+= thermal_sys.o
> 
> I know this is for fixing the annoying bug with fan max speed. But while 
> still here, do you think 'thermal_sys' is a good name for thermal 
> framework driver? Maybe just 'thermal' would suffice?
> 
as I said, there is already a thermal driver, aka,
driver/acpi/thermal.c.

thanks,
rui
> > +thermal_sys-y			+= thermal_core.o
> >
> >   # governors
> >   obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> > diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> > new file mode 100644
> > index 0000000..5b7863a
> > --- /dev/null
> > +++ b/drivers/thermal/thermal_core.c
> > @@ -0,0 +1,1888 @@
> > +/*
> > + *  thermal.c - Generic Thermal Management Sysfs support.
> > + *
> > + *  Copyright (C) 2008 Intel Corp
> > + *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> > + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> > + *
> > + *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > + *
> > + *  This program is free software; you can redistribute it and/or modify
> > + *  it under the terms of the GNU General Public License as published by
> > + *  the Free Software Foundation; version 2 of the License.
> > + *
> > + *  This program is distributed in the hope that it will be useful, but
> > + *  WITHOUT ANY WARRANTY; without even the implied warranty of
> > + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> > + *  General Public License for more details.
> > + *
> > + *  You should have received a copy of the GNU General Public License along
> > + *  with this program; if not, write to the Free Software Foundation, Inc.,
> > + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> > + *
> > + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > + */
> > +
> > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > +
> > +#include <linux/module.h>
> > +#include <linux/device.h>
> > +#include <linux/err.h>
> > +#include <linux/slab.h>
> > +#include <linux/kdev_t.h>
> > +#include <linux/idr.h>
> > +#include <linux/thermal.h>
> > +#include <linux/reboot.h>
> > +#include <net/netlink.h>
> > +#include <net/genetlink.h>
> > +
> > +#include "thermal_core.h"
> > +
> > +MODULE_AUTHOR("Zhang Rui");
> > +MODULE_DESCRIPTION("Generic thermal management sysfs support");
> > +MODULE_LICENSE("GPL");
> > +
> > +static DEFINE_IDR(thermal_tz_idr);
> > +static DEFINE_IDR(thermal_cdev_idr);
> > +static DEFINE_MUTEX(thermal_idr_lock);
> > +
> > +static LIST_HEAD(thermal_tz_list);
> > +static LIST_HEAD(thermal_cdev_list);
> > +static LIST_HEAD(thermal_governor_list);
> > +
> > +static DEFINE_MUTEX(thermal_list_lock);
> > +static DEFINE_MUTEX(thermal_governor_lock);
> > +
> > +static struct thermal_governor *__find_governor(const char *name)
> > +{
> > +	struct thermal_governor *pos;
> > +
> > +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> > +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> > +			return pos;
> > +
> > +	return NULL;
> > +}
> > +
> > +int thermal_register_governor(struct thermal_governor *governor)
> > +{
> > +	int err;
> > +	const char *name;
> > +	struct thermal_zone_device *pos;
> > +
> > +	if (!governor)
> > +		return -EINVAL;
> > +
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	err = -EBUSY;
> > +	if (__find_governor(governor->name) == NULL) {
> > +		err = 0;
> > +		list_add(&governor->governor_list, &thermal_governor_list);
> > +	}
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	list_for_each_entry(pos, &thermal_tz_list, node) {
> > +		if (pos->governor)
> > +			continue;
> > +		if (pos->tzp)
> > +			name = pos->tzp->governor_name;
> > +		else
> > +			name = DEFAULT_THERMAL_GOVERNOR;
> > +		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
> > +			pos->governor = governor;
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +	mutex_unlock(&thermal_governor_lock);
> > +
> > +	return err;
> > +}
> > +EXPORT_SYMBOL_GPL(thermal_register_governor);
> > +
> > +void thermal_unregister_governor(struct thermal_governor *governor)
> > +{
> > +	struct thermal_zone_device *pos;
> > +
> > +	if (!governor)
> > +		return;
> > +
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	if (__find_governor(governor->name) == NULL)
> > +		goto exit;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	list_for_each_entry(pos, &thermal_tz_list, node) {
> > +		if (!strnicmp(pos->governor->name, governor->name,
> > +						THERMAL_NAME_LENGTH))
> > +			pos->governor = NULL;
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +	list_del(&governor->governor_list);
> > +exit:
> > +	mutex_unlock(&thermal_governor_lock);
> > +	return;
> > +}
> > +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> > +
> > +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> > +{
> > +	int ret;
> > +
> > +	if (lock)
> > +		mutex_lock(lock);
> > +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> > +	if (lock)
> > +		mutex_unlock(lock);
> > +	if (unlikely(ret < 0))
> > +		return ret;
> > +	*id = ret;
> > +	return 0;
> > +}
> > +
> > +static void release_idr(struct idr *idr, struct mutex *lock, int id)
> > +{
> > +	if (lock)
> > +		mutex_lock(lock);
> > +	idr_remove(idr, id);
> > +	if (lock)
> > +		mutex_unlock(lock);
> > +}
> > +
> > +int get_tz_trend(struct thermal_zone_device *tz, int trip)
> > +{
> > +	enum thermal_trend trend;
> > +
> > +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> > +		if (tz->temperature > tz->last_temperature)
> > +			trend = THERMAL_TREND_RAISING;
> > +		else if (tz->temperature < tz->last_temperature)
> > +			trend = THERMAL_TREND_DROPPING;
> > +		else
> > +			trend = THERMAL_TREND_STABLE;
> > +	}
> > +
> > +	return trend;
> > +}
> > +EXPORT_SYMBOL(get_tz_trend);
> > +
> > +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
> > +			struct thermal_cooling_device *cdev, int trip)
> > +{
> > +	struct thermal_instance *pos = NULL;
> > +	struct thermal_instance *target_instance = NULL;
> > +
> > +	mutex_lock(&tz->lock);
> > +	mutex_lock(&cdev->lock);
> > +
> > +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> > +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > +			target_instance = pos;
> > +			break;
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&cdev->lock);
> > +	mutex_unlock(&tz->lock);
> > +
> > +	return target_instance;
> > +}
> > +EXPORT_SYMBOL(get_thermal_instance);
> > +
> > +static void print_bind_err_msg(struct thermal_zone_device *tz,
> > +			struct thermal_cooling_device *cdev, int ret)
> > +{
> > +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> > +				tz->type, cdev->type, ret);
> > +}
> > +
> > +static void __bind(struct thermal_zone_device *tz, int mask,
> > +			struct thermal_cooling_device *cdev)
> > +{
> > +	int i, ret;
> > +
> > +	for (i = 0; i < tz->trips; i++) {
> > +		if (mask & (1 << i)) {
> > +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> > +					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
> > +			if (ret)
> > +				print_bind_err_msg(tz, cdev, ret);
> > +		}
> > +	}
> > +}
> > +
> > +static void __unbind(struct thermal_zone_device *tz, int mask,
> > +			struct thermal_cooling_device *cdev)
> > +{
> > +	int i;
> > +
> > +	for (i = 0; i < tz->trips; i++)
> > +		if (mask & (1 << i))
> > +			thermal_zone_unbind_cooling_device(tz, i, cdev);
> > +}
> > +
> > +static void bind_cdev(struct thermal_cooling_device *cdev)
> > +{
> > +	int i, ret;
> > +	const struct thermal_zone_params *tzp;
> > +	struct thermal_zone_device *pos = NULL;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	list_for_each_entry(pos, &thermal_tz_list, node) {
> > +		if (!pos->tzp && !pos->ops->bind)
> > +			continue;
> > +
> > +		if (!pos->tzp && pos->ops->bind) {
> > +			ret = pos->ops->bind(pos, cdev);
> > +			if (ret)
> > +				print_bind_err_msg(pos, cdev, ret);
> > +		}
> > +
> > +		tzp = pos->tzp;
> > +		if (!tzp || !tzp->tbp)
> > +			continue;
> > +
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > +				continue;
> > +			if (tzp->tbp[i].match(pos, cdev))
> > +				continue;
> > +			tzp->tbp[i].cdev = cdev;
> > +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +}
> > +
> > +static void bind_tz(struct thermal_zone_device *tz)
> > +{
> > +	int i, ret;
> > +	struct thermal_cooling_device *pos = NULL;
> > +	const struct thermal_zone_params *tzp = tz->tzp;
> > +
> > +	if (!tzp && !tz->ops->bind)
> > +		return;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +
> > +	/* If there is no platform data, try to use ops->bind */
> > +	if (!tzp && tz->ops->bind) {
> > +		list_for_each_entry(pos, &thermal_cdev_list, node) {
> > +			ret = tz->ops->bind(tz, pos);
> > +			if (ret)
> > +				print_bind_err_msg(tz, pos, ret);
> > +		}
> > +		goto exit;
> > +	}
> > +
> > +	if (!tzp || !tzp->tbp)
> > +		goto exit;
> > +
> > +	list_for_each_entry(pos, &thermal_cdev_list, node) {
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > +				continue;
> > +			if (tzp->tbp[i].match(tz, pos))
> > +				continue;
> > +			tzp->tbp[i].cdev = pos;
> > +			__bind(tz, tzp->tbp[i].trip_mask, pos);
> > +		}
> > +	}
> > +exit:
> > +	mutex_unlock(&thermal_list_lock);
> > +}
> > +
> > +static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
> > +					    int delay)
> > +{
> > +	if (delay > 1000)
> > +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> > +				 round_jiffies(msecs_to_jiffies(delay)));
> > +	else if (delay)
> > +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> > +				 msecs_to_jiffies(delay));
> > +	else
> > +		cancel_delayed_work(&tz->poll_queue);
> > +}
> > +
> > +static void monitor_thermal_zone(struct thermal_zone_device *tz)
> > +{
> > +	mutex_lock(&tz->lock);
> > +
> > +	if (tz->passive)
> > +		thermal_zone_device_set_polling(tz, tz->passive_delay);
> > +	else if (tz->polling_delay)
> > +		thermal_zone_device_set_polling(tz, tz->polling_delay);
> > +	else
> > +		thermal_zone_device_set_polling(tz, 0);
> > +
> > +	mutex_unlock(&tz->lock);
> > +}
> > +
> > +static void handle_non_critical_trips(struct thermal_zone_device *tz,
> > +			int trip, enum thermal_trip_type trip_type)
> > +{
> > +	if (tz->governor)
> > +		tz->governor->throttle(tz, trip);
> > +}
> > +
> > +static void handle_critical_trips(struct thermal_zone_device *tz,
> > +				int trip, enum thermal_trip_type trip_type)
> > +{
> > +	long trip_temp;
> > +
> > +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> > +
> > +	/* If we have not crossed the trip_temp, we do not care. */
> > +	if (tz->temperature < trip_temp)
> > +		return;
> > +
> > +	if (tz->ops->notify)
> > +		tz->ops->notify(tz, trip, trip_type);
> > +
> > +	if (trip_type == THERMAL_TRIP_CRITICAL) {
> > +		dev_emerg(&tz->device,
> > +			  "critical temperature reached(%d C),shutting down\n",
> > +			  tz->temperature / 1000);
> > +		orderly_poweroff(true);
> > +	}
> > +}
> > +
> > +static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> > +{
> > +	enum thermal_trip_type type;
> > +
> > +	tz->ops->get_trip_type(tz, trip, &type);
> > +
> > +	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
> > +		handle_critical_trips(tz, trip, type);
> > +	else
> > +		handle_non_critical_trips(tz, trip, type);
> > +	/*
> > +	 * Alright, we handled this trip successfully.
> > +	 * So, start monitoring again.
> > +	 */
> > +	monitor_thermal_zone(tz);
> > +}
> > +
> > +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> > +				unsigned long *temp)
> > +{
> > +	int ret = 0;
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +	int count;
> > +	unsigned long crit_temp = -1UL;
> > +	enum thermal_trip_type type;
> > +#endif
> > +
> > +	mutex_lock(&tz->lock);
> > +
> > +	ret = tz->ops->get_temp(tz, temp);
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +	if (!tz->emul_temperature)
> > +		goto skip_emul;
> > +
> > +	for (count = 0; count < tz->trips; count++) {
> > +		ret = tz->ops->get_trip_type(tz, count, &type);
> > +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> > +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> > +			break;
> > +		}
> > +	}
> > +
> > +	if (ret)
> > +		goto skip_emul;
> > +
> > +	if (*temp < crit_temp)
> > +		*temp = tz->emul_temperature;
> > +skip_emul:
> > +#endif
> > +	mutex_unlock(&tz->lock);
> > +	return ret;
> > +}
> > +
> > +static void update_temperature(struct thermal_zone_device *tz)
> > +{
> > +	long temp;
> > +	int ret;
> > +
> > +	ret = thermal_zone_get_temp(tz, &temp);
> > +	if (ret) {
> > +		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
> > +			 tz->id);
> > +		return;
> > +	}
> > +
> > +	mutex_lock(&tz->lock);
> > +	tz->last_temperature = tz->temperature;
> > +	tz->temperature = temp;
> > +	mutex_unlock(&tz->lock);
> > +}
> > +
> > +void thermal_zone_device_update(struct thermal_zone_device *tz)
> > +{
> > +	int count;
> > +
> > +	update_temperature(tz);
> > +
> > +	for (count = 0; count < tz->trips; count++)
> > +		handle_thermal_trip(tz, count);
> > +}
> > +EXPORT_SYMBOL(thermal_zone_device_update);
> > +
> > +static void thermal_zone_device_check(struct work_struct *work)
> > +{
> > +	struct thermal_zone_device *tz = container_of(work, struct
> > +						      thermal_zone_device,
> > +						      poll_queue.work);
> > +	thermal_zone_device_update(tz);
> > +}
> > +
> > +/* sys I/F for thermal zone */
> > +
> > +#define to_thermal_zone(_dev) \
> > +	container_of(_dev, struct thermal_zone_device, device)
> > +
> > +static ssize_t
> > +type_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +
> > +	return sprintf(buf, "%s\n", tz->type);
> > +}
> > +
> > +static ssize_t
> > +temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	long temperature;
> > +	int ret;
> > +
> > +	ret = thermal_zone_get_temp(tz, &temperature);
> > +
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	enum thermal_device_mode mode;
> > +	int result;
> > +
> > +	if (!tz->ops->get_mode)
> > +		return -EPERM;
> > +
> > +	result = tz->ops->get_mode(tz, &mode);
> > +	if (result)
> > +		return result;
> > +
> > +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
> > +		       : "disabled");
> > +}
> > +
> > +static ssize_t
> > +mode_store(struct device *dev, struct device_attribute *attr,
> > +	   const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int result;
> > +
> > +	if (!tz->ops->set_mode)
> > +		return -EPERM;
> > +
> > +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> > +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
> > +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> > +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
> > +	else
> > +		result = -EINVAL;
> > +
> > +	if (result)
> > +		return result;
> > +
> > +	return count;
> > +}
> > +
> > +static ssize_t
> > +trip_point_type_show(struct device *dev, struct device_attribute *attr,
> > +		     char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	enum thermal_trip_type type;
> > +	int trip, result;
> > +
> > +	if (!tz->ops->get_trip_type)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> > +		return -EINVAL;
> > +
> > +	result = tz->ops->get_trip_type(tz, trip, &type);
> > +	if (result)
> > +		return result;
> > +
> > +	switch (type) {
> > +	case THERMAL_TRIP_CRITICAL:
> > +		return sprintf(buf, "critical\n");
> > +	case THERMAL_TRIP_HOT:
> > +		return sprintf(buf, "hot\n");
> > +	case THERMAL_TRIP_PASSIVE:
> > +		return sprintf(buf, "passive\n");
> > +	case THERMAL_TRIP_ACTIVE:
> > +		return sprintf(buf, "active\n");
> > +	default:
> > +		return sprintf(buf, "unknown\n");
> > +	}
> > +}
> > +
> > +static ssize_t
> > +trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> > +		     const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	unsigned long temperature;
> > +
> > +	if (!tz->ops->set_trip_temp)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > +		return -EINVAL;
> > +
> > +	if (kstrtoul(buf, 10, &temperature))
> > +		return -EINVAL;
> > +
> > +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> > +
> > +	return ret ? ret : count;
> > +}
> > +
> > +static ssize_t
> > +trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> > +		     char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	long temperature;
> > +
> > +	if (!tz->ops->get_trip_temp)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > +		return -EINVAL;
> > +
> > +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> > +
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> > +			const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	unsigned long temperature;
> > +
> > +	if (!tz->ops->set_trip_hyst)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > +		return -EINVAL;
> > +
> > +	if (kstrtoul(buf, 10, &temperature))
> > +		return -EINVAL;
> > +
> > +	/*
> > +	 * We are not doing any check on the 'temperature' value
> > +	 * here. The driver implementing 'set_trip_hyst' has to
> > +	 * take care of this.
> > +	 */
> > +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> > +
> > +	return ret ? ret : count;
> > +}
> > +
> > +static ssize_t
> > +trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> > +			char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int trip, ret;
> > +	unsigned long temperature;
> > +
> > +	if (!tz->ops->get_trip_hyst)
> > +		return -EPERM;
> > +
> > +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > +		return -EINVAL;
> > +
> > +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> > +
> > +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +passive_store(struct device *dev, struct device_attribute *attr,
> > +		    const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	struct thermal_cooling_device *cdev = NULL;
> > +	int state;
> > +
> > +	if (!sscanf(buf, "%d\n", &state))
> > +		return -EINVAL;
> > +
> > +	/* sanity check: values below 1000 millicelcius don't make sense
> > +	 * and can cause the system to go into a thermal heart attack
> > +	 */
> > +	if (state && state < 1000)
> > +		return -EINVAL;
> > +
> > +	if (state && !tz->forced_passive) {
> > +		mutex_lock(&thermal_list_lock);
> > +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > +			if (!strncmp("Processor", cdev->type,
> > +				     sizeof("Processor")))
> > +				thermal_zone_bind_cooling_device(tz,
> > +						THERMAL_TRIPS_NONE, cdev,
> > +						THERMAL_NO_LIMIT,
> > +						THERMAL_NO_LIMIT);
> > +		}
> > +		mutex_unlock(&thermal_list_lock);
> > +		if (!tz->passive_delay)
> > +			tz->passive_delay = 1000;
> > +	} else if (!state && tz->forced_passive) {
> > +		mutex_lock(&thermal_list_lock);
> > +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > +			if (!strncmp("Processor", cdev->type,
> > +				     sizeof("Processor")))
> > +				thermal_zone_unbind_cooling_device(tz,
> > +								   THERMAL_TRIPS_NONE,
> > +								   cdev);
> > +		}
> > +		mutex_unlock(&thermal_list_lock);
> > +		tz->passive_delay = 0;
> > +	}
> > +
> > +	tz->forced_passive = state;
> > +
> > +	thermal_zone_device_update(tz);
> > +
> > +	return count;
> > +}
> > +
> > +static ssize_t
> > +passive_show(struct device *dev, struct device_attribute *attr,
> > +		   char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +
> > +	return sprintf(buf, "%d\n", tz->forced_passive);
> > +}
> > +
> > +static ssize_t
> > +policy_store(struct device *dev, struct device_attribute *attr,
> > +		    const char *buf, size_t count)
> > +{
> > +	int ret = -EINVAL;
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	struct thermal_governor *gov;
> > +
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	gov = __find_governor(buf);
> > +	if (!gov)
> > +		goto exit;
> > +
> > +	tz->governor = gov;
> > +	ret = count;
> > +
> > +exit:
> > +	mutex_unlock(&thermal_governor_lock);
> > +	return ret;
> > +}
> > +
> > +static ssize_t
> > +policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +
> > +	return sprintf(buf, "%s\n", tz->governor->name);
> > +}
> > +
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +static ssize_t
> > +emul_temp_store(struct device *dev, struct device_attribute *attr,
> > +		     const char *buf, size_t count)
> > +{
> > +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > +	int ret = 0;
> > +	unsigned long temperature;
> > +
> > +	if (kstrtoul(buf, 10, &temperature))
> > +		return -EINVAL;
> > +
> > +	if (!tz->ops->set_emul_temp) {
> > +		mutex_lock(&tz->lock);
> > +		tz->emul_temperature = temperature;
> > +		mutex_unlock(&tz->lock);
> > +	} else {
> > +		ret = tz->ops->set_emul_temp(tz, temperature);
> > +	}
> > +
> > +	return ret ? ret : count;
> > +}
> > +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> > +#endif/*CONFIG_THERMAL_EMULATION*/
> > +
> > +static DEVICE_ATTR(type, 0444, type_show, NULL);
> > +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> > +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> > +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
> > +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
> > +
> > +/* sys I/F for cooling device */
> > +#define to_cooling_device(_dev)	\
> > +	container_of(_dev, struct thermal_cooling_device, device)
> > +
> > +static ssize_t
> > +thermal_cooling_device_type_show(struct device *dev,
> > +				 struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +
> > +	return sprintf(buf, "%s\n", cdev->type);
> > +}
> > +
> > +static ssize_t
> > +thermal_cooling_device_max_state_show(struct device *dev,
> > +				      struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +	unsigned long state;
> > +	int ret;
> > +
> > +	ret = cdev->ops->get_max_state(cdev, &state);
> > +	if (ret)
> > +		return ret;
> > +	return sprintf(buf, "%ld\n", state);
> > +}
> > +
> > +static ssize_t
> > +thermal_cooling_device_cur_state_show(struct device *dev,
> > +				      struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +	unsigned long state;
> > +	int ret;
> > +
> > +	ret = cdev->ops->get_cur_state(cdev, &state);
> > +	if (ret)
> > +		return ret;
> > +	return sprintf(buf, "%ld\n", state);
> > +}
> > +
> > +static ssize_t
> > +thermal_cooling_device_cur_state_store(struct device *dev,
> > +				       struct device_attribute *attr,
> > +				       const char *buf, size_t count)
> > +{
> > +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > +	unsigned long state;
> > +	int result;
> > +
> > +	if (!sscanf(buf, "%ld\n", &state))
> > +		return -EINVAL;
> > +
> > +	if ((long)state < 0)
> > +		return -EINVAL;
> > +
> > +	result = cdev->ops->set_cur_state(cdev, state);
> > +	if (result)
> > +		return result;
> > +	return count;
> > +}
> > +
> > +static struct device_attribute dev_attr_cdev_type =
> > +__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> > +static DEVICE_ATTR(max_state, 0444,
> > +		   thermal_cooling_device_max_state_show, NULL);
> > +static DEVICE_ATTR(cur_state, 0644,
> > +		   thermal_cooling_device_cur_state_show,
> > +		   thermal_cooling_device_cur_state_store);
> > +
> > +static ssize_t
> > +thermal_cooling_device_trip_point_show(struct device *dev,
> > +				       struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_instance *instance;
> > +
> > +	instance =
> > +	    container_of(attr, struct thermal_instance, attr);
> > +
> > +	if (instance->trip == THERMAL_TRIPS_NONE)
> > +		return sprintf(buf, "-1\n");
> > +	else
> > +		return sprintf(buf, "%d\n", instance->trip);
> > +}
> > +
> > +/* Device management */
> > +
> > +#if defined(CONFIG_THERMAL_HWMON)
> > +
> > +/* hwmon sys I/F */
> > +#include <linux/hwmon.h>
> > +
> > +/* thermal zone devices with the same type share one hwmon device */
> > +struct thermal_hwmon_device {
> > +	char type[THERMAL_NAME_LENGTH];
> > +	struct device *device;
> > +	int count;
> > +	struct list_head tz_list;
> > +	struct list_head node;
> > +};
> > +
> > +struct thermal_hwmon_attr {
> > +	struct device_attribute attr;
> > +	char name[16];
> > +};
> > +
> > +/* one temperature input for each thermal zone */
> > +struct thermal_hwmon_temp {
> > +	struct list_head hwmon_node;
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> > +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> > +};
> > +
> > +static LIST_HEAD(thermal_hwmon_list);
> > +
> > +static ssize_t
> > +name_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> > +	return sprintf(buf, "%s\n", hwmon->type);
> > +}
> > +static DEVICE_ATTR(name, 0444, name_show, NULL);
> > +
> > +static ssize_t
> > +temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
> > +{
> > +	long temperature;
> > +	int ret;
> > +	struct thermal_hwmon_attr *hwmon_attr
> > +			= container_of(attr, struct thermal_hwmon_attr, attr);
> > +	struct thermal_hwmon_temp *temp
> > +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> > +				       temp_input);
> > +	struct thermal_zone_device *tz = temp->tz;
> > +
> > +	ret = thermal_zone_get_temp(tz, &temperature);
> > +
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +static ssize_t
> > +temp_crit_show(struct device *dev, struct device_attribute *attr,
> > +		char *buf)
> > +{
> > +	struct thermal_hwmon_attr *hwmon_attr
> > +			= container_of(attr, struct thermal_hwmon_attr, attr);
> > +	struct thermal_hwmon_temp *temp
> > +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> > +				       temp_crit);
> > +	struct thermal_zone_device *tz = temp->tz;
> > +	long temperature;
> > +	int ret;
> > +
> > +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> > +	if (ret)
> > +		return ret;
> > +
> > +	return sprintf(buf, "%ld\n", temperature);
> > +}
> > +
> > +
> > +static struct thermal_hwmon_device *
> > +thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_device *hwmon;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> > +		if (!strcmp(hwmon->type, tz->type)) {
> > +			mutex_unlock(&thermal_list_lock);
> > +			return hwmon;
> > +		}
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	return NULL;
> > +}
> > +
> > +/* Find the temperature input matching a given thermal zone */
> > +static struct thermal_hwmon_temp *
> > +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
> > +			  const struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_temp *temp;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> > +		if (temp->tz == tz) {
> > +			mutex_unlock(&thermal_list_lock);
> > +			return temp;
> > +		}
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	return NULL;
> > +}
> > +
> > +static int
> > +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_device *hwmon;
> > +	struct thermal_hwmon_temp *temp;
> > +	int new_hwmon_device = 1;
> > +	int result;
> > +
> > +	hwmon = thermal_hwmon_lookup_by_type(tz);
> > +	if (hwmon) {
> > +		new_hwmon_device = 0;
> > +		goto register_sys_interface;
> > +	}
> > +
> > +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
> > +	if (!hwmon)
> > +		return -ENOMEM;
> > +
> > +	INIT_LIST_HEAD(&hwmon->tz_list);
> > +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> > +	hwmon->device = hwmon_device_register(NULL);
> > +	if (IS_ERR(hwmon->device)) {
> > +		result = PTR_ERR(hwmon->device);
> > +		goto free_mem;
> > +	}
> > +	dev_set_drvdata(hwmon->device, hwmon);
> > +	result = device_create_file(hwmon->device, &dev_attr_name);
> > +	if (result)
> > +		goto free_mem;
> > +
> > + register_sys_interface:
> > +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> > +	if (!temp) {
> > +		result = -ENOMEM;
> > +		goto unregister_name;
> > +	}
> > +
> > +	temp->tz = tz;
> > +	hwmon->count++;
> > +
> > +	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
> > +		 "temp%d_input", hwmon->count);
> > +	temp->temp_input.attr.attr.name = temp->temp_input.name;
> > +	temp->temp_input.attr.attr.mode = 0444;
> > +	temp->temp_input.attr.show = temp_input_show;
> > +	sysfs_attr_init(&temp->temp_input.attr.attr);
> > +	result = device_create_file(hwmon->device, &temp->temp_input.attr);
> > +	if (result)
> > +		goto free_temp_mem;
> > +
> > +	if (tz->ops->get_crit_temp) {
> > +		unsigned long temperature;
> > +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> > +			snprintf(temp->temp_crit.name,
> > +				 sizeof(temp->temp_crit.name),
> > +				"temp%d_crit", hwmon->count);
> > +			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
> > +			temp->temp_crit.attr.attr.mode = 0444;
> > +			temp->temp_crit.attr.show = temp_crit_show;
> > +			sysfs_attr_init(&temp->temp_crit.attr.attr);
> > +			result = device_create_file(hwmon->device,
> > +						    &temp->temp_crit.attr);
> > +			if (result)
> > +				goto unregister_input;
> > +		}
> > +	}
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	if (new_hwmon_device)
> > +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> > +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	return 0;
> > +
> > + unregister_input:
> > +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > + free_temp_mem:
> > +	kfree(temp);
> > + unregister_name:
> > +	if (new_hwmon_device) {
> > +		device_remove_file(hwmon->device, &dev_attr_name);
> > +		hwmon_device_unregister(hwmon->device);
> > +	}
> > + free_mem:
> > +	if (new_hwmon_device)
> > +		kfree(hwmon);
> > +
> > +	return result;
> > +}
> > +
> > +static void
> > +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +	struct thermal_hwmon_device *hwmon;
> > +	struct thermal_hwmon_temp *temp;
> > +
> > +	hwmon = thermal_hwmon_lookup_by_type(tz);
> > +	if (unlikely(!hwmon)) {
> > +		/* Should never happen... */
> > +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> > +		return;
> > +	}
> > +
> > +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> > +	if (unlikely(!temp)) {
> > +		/* Should never happen... */
> > +		dev_dbg(&tz->device, "temperature input lookup failed!\n");
> > +		return;
> > +	}
> > +
> > +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > +	if (tz->ops->get_crit_temp)
> > +		device_remove_file(hwmon->device, &temp->temp_crit.attr);
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_del(&temp->hwmon_node);
> > +	kfree(temp);
> > +	if (!list_empty(&hwmon->tz_list)) {
> > +		mutex_unlock(&thermal_list_lock);
> > +		return;
> > +	}
> > +	list_del(&hwmon->node);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	device_remove_file(hwmon->device, &dev_attr_name);
> > +	hwmon_device_unregister(hwmon->device);
> > +	kfree(hwmon);
> > +}
> > +#else
> > +static int
> > +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +	return 0;
> > +}
> > +
> > +static void
> > +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > +{
> > +}
> > +#endif
> > +
> > +/**
> > + * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
> > + * @tz:		thermal zone device
> > + * @trip:	indicates which trip point the cooling devices is
> > + *		associated with in this thermal zone.
> > + * @cdev:	thermal cooling device
> > + *
> > + * This function is usually called in the thermal zone device .bind callback.
> > + */
> > +int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> > +				     int trip,
> > +				     struct thermal_cooling_device *cdev,
> > +				     unsigned long upper, unsigned long lower)
> > +{
> > +	struct thermal_instance *dev;
> > +	struct thermal_instance *pos;
> > +	struct thermal_zone_device *pos1;
> > +	struct thermal_cooling_device *pos2;
> > +	unsigned long max_state;
> > +	int result;
> > +
> > +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> > +		return -EINVAL;
> > +
> > +	list_for_each_entry(pos1, &thermal_tz_list, node) {
> > +		if (pos1 == tz)
> > +			break;
> > +	}
> > +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> > +		if (pos2 == cdev)
> > +			break;
> > +	}
> > +
> > +	if (tz != pos1 || cdev != pos2)
> > +		return -EINVAL;
> > +
> > +	cdev->ops->get_max_state(cdev, &max_state);
> > +
> > +	/* lower default 0, upper default max_state */
> > +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> > +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> > +
> > +	if (lower > upper || upper > max_state)
> > +		return -EINVAL;
> > +
> > +	dev =
> > +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> > +	if (!dev)
> > +		return -ENOMEM;
> > +	dev->tz = tz;
> > +	dev->cdev = cdev;
> > +	dev->trip = trip;
> > +	dev->upper = upper;
> > +	dev->lower = lower;
> > +	dev->target = THERMAL_NO_TARGET;
> > +
> > +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> > +	if (result)
> > +		goto free_mem;
> > +
> > +	sprintf(dev->name, "cdev%d", dev->id);
> > +	result =
> > +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
> > +	if (result)
> > +		goto release_idr;
> > +
> > +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> > +	sysfs_attr_init(&dev->attr.attr);
> > +	dev->attr.attr.name = dev->attr_name;
> > +	dev->attr.attr.mode = 0444;
> > +	dev->attr.show = thermal_cooling_device_trip_point_show;
> > +	result = device_create_file(&tz->device, &dev->attr);
> > +	if (result)
> > +		goto remove_symbol_link;
> > +
> > +	mutex_lock(&tz->lock);
> > +	mutex_lock(&cdev->lock);
> > +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> > +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > +		result = -EEXIST;
> > +		break;
> > +	}
> > +	if (!result) {
> > +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> > +		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
> > +	}
> > +	mutex_unlock(&cdev->lock);
> > +	mutex_unlock(&tz->lock);
> > +
> > +	if (!result)
> > +		return 0;
> > +
> > +	device_remove_file(&tz->device, &dev->attr);
> > +remove_symbol_link:
> > +	sysfs_remove_link(&tz->device.kobj, dev->name);
> > +release_idr:
> > +	release_idr(&tz->idr, &tz->lock, dev->id);
> > +free_mem:
> > +	kfree(dev);
> > +	return result;
> > +}
> > +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> > +
> > +/**
> > + * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
> > + * @tz:		thermal zone device
> > + * @trip:	indicates which trip point the cooling devices is
> > + *		associated with in this thermal zone.
> > + * @cdev:	thermal cooling device
> > + *
> > + * This function is usually called in the thermal zone device .unbind callback.
> > + */
> > +int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> > +				       int trip,
> > +				       struct thermal_cooling_device *cdev)
> > +{
> > +	struct thermal_instance *pos, *next;
> > +
> > +	mutex_lock(&tz->lock);
> > +	mutex_lock(&cdev->lock);
> > +	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
> > +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > +			list_del(&pos->tz_node);
> > +			list_del(&pos->cdev_node);
> > +			mutex_unlock(&cdev->lock);
> > +			mutex_unlock(&tz->lock);
> > +			goto unbind;
> > +		}
> > +	}
> > +	mutex_unlock(&cdev->lock);
> > +	mutex_unlock(&tz->lock);
> > +
> > +	return -ENODEV;
> > +
> > +unbind:
> > +	device_remove_file(&tz->device, &pos->attr);
> > +	sysfs_remove_link(&tz->device.kobj, pos->name);
> > +	release_idr(&tz->idr, &tz->lock, pos->id);
> > +	kfree(pos);
> > +	return 0;
> > +}
> > +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> > +
> > +static void thermal_release(struct device *dev)
> > +{
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_cooling_device *cdev;
> > +
> > +	if (!strncmp(dev_name(dev), "thermal_zone",
> > +		     sizeof("thermal_zone") - 1)) {
> > +		tz = to_thermal_zone(dev);
> > +		kfree(tz);
> > +	} else {
> > +		cdev = to_cooling_device(dev);
> > +		kfree(cdev);
> > +	}
> > +}
> > +
> > +static struct class thermal_class = {
> > +	.name = "thermal",
> > +	.dev_release = thermal_release,
> > +};
> > +
> > +/**
> > + * thermal_cooling_device_register - register a new thermal cooling device
> > + * @type:	the thermal cooling device type.
> > + * @devdata:	device private data.
> > + * @ops:		standard thermal cooling devices callbacks.
> > + */
> > +struct thermal_cooling_device *
> > +thermal_cooling_device_register(char *type, void *devdata,
> > +				const struct thermal_cooling_device_ops *ops)
> > +{
> > +	struct thermal_cooling_device *cdev;
> > +	int result;
> > +
> > +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> > +	    !ops->set_cur_state)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> > +	if (!cdev)
> > +		return ERR_PTR(-ENOMEM);
> > +
> > +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> > +	if (result) {
> > +		kfree(cdev);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	strcpy(cdev->type, type ? : "");
> > +	mutex_init(&cdev->lock);
> > +	INIT_LIST_HEAD(&cdev->thermal_instances);
> > +	cdev->ops = ops;
> > +	cdev->updated = true;
> > +	cdev->device.class = &thermal_class;
> > +	cdev->devdata = devdata;
> > +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> > +	result = device_register(&cdev->device);
> > +	if (result) {
> > +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > +		kfree(cdev);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	/* sys I/F */
> > +	if (type) {
> > +		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +	result = device_create_file(&cdev->device, &dev_attr_max_state);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	/* Add 'this' new cdev to the global cdev list */
> > +	mutex_lock(&thermal_list_lock);
> > +	list_add(&cdev->node, &thermal_cdev_list);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	/* Update binding information for 'this' new cdev */
> > +	bind_cdev(cdev);
> > +
> > +	return cdev;
> > +
> > +unregister:
> > +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > +	device_unregister(&cdev->device);
> > +	return ERR_PTR(result);
> > +}
> > +EXPORT_SYMBOL(thermal_cooling_device_register);
> > +
> > +/**
> > + * thermal_cooling_device_unregister - removes the registered thermal cooling device
> > + * @cdev:	the thermal cooling device to remove.
> > + *
> > + * thermal_cooling_device_unregister() must be called when the device is no
> > + * longer needed.
> > + */
> > +void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
> > +{
> > +	int i;
> > +	const struct thermal_zone_params *tzp;
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_cooling_device *pos = NULL;
> > +
> > +	if (!cdev)
> > +		return;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(pos, &thermal_cdev_list, node)
> > +	    if (pos == cdev)
> > +		break;
> > +	if (pos != cdev) {
> > +		/* thermal cooling device not found */
> > +		mutex_unlock(&thermal_list_lock);
> > +		return;
> > +	}
> > +	list_del(&cdev->node);
> > +
> > +	/* Unbind all thermal zones associated with 'this' cdev */
> > +	list_for_each_entry(tz, &thermal_tz_list, node) {
> > +		if (tz->ops->unbind) {
> > +			tz->ops->unbind(tz, cdev);
> > +			continue;
> > +		}
> > +
> > +		if (!tz->tzp || !tz->tzp->tbp)
> > +			continue;
> > +
> > +		tzp = tz->tzp;
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev == cdev) {
> > +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > +				tzp->tbp[i].cdev = NULL;
> > +			}
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	if (cdev->type[0])
> > +		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> > +	device_remove_file(&cdev->device, &dev_attr_max_state);
> > +	device_remove_file(&cdev->device, &dev_attr_cur_state);
> > +
> > +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > +	device_unregister(&cdev->device);
> > +	return;
> > +}
> > +EXPORT_SYMBOL(thermal_cooling_device_unregister);
> > +
> > +void thermal_cdev_update(struct thermal_cooling_device *cdev)
> > +{
> > +	struct thermal_instance *instance;
> > +	unsigned long target = 0;
> > +
> > +	/* cooling device is updated*/
> > +	if (cdev->updated)
> > +		return;
> > +
> > +	mutex_lock(&cdev->lock);
> > +	/* Make sure cdev enters the deepest cooling state */
> > +	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
> > +		if (instance->target == THERMAL_NO_TARGET)
> > +			continue;
> > +		if (instance->target > target)
> > +			target = instance->target;
> > +	}
> > +	mutex_unlock(&cdev->lock);
> > +	cdev->ops->set_cur_state(cdev, target);
> > +	cdev->updated = true;
> > +}
> > +EXPORT_SYMBOL(thermal_cdev_update);
> > +
> > +/**
> > + * notify_thermal_framework - Sensor drivers use this API to notify framework
> > + * @tz:		thermal zone device
> > + * @trip:	indicates which trip point has been crossed
> > + *
> > + * This function handles the trip events from sensor drivers. It starts
> > + * throttling the cooling devices according to the policy configured.
> > + * For CRITICAL and HOT trip points, this notifies the respective drivers,
> > + * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> > + * The throttling policy is based on the configured platform data; if no
> > + * platform data is provided, this uses the step_wise throttling policy.
> > + */
> > +void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> > +{
> > +	handle_thermal_trip(tz, trip);
> > +}
> > +EXPORT_SYMBOL(notify_thermal_framework);
> > +
> > +/**
> > + * create_trip_attrs - create attributes for trip points
> > + * @tz:		the thermal zone device
> > + * @mask:	Writeable trip point bitmap.
> > + */
> > +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> > +{
> > +	int indx;
> > +	int size = sizeof(struct thermal_attr) * tz->trips;
> > +
> > +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> > +	if (!tz->trip_type_attrs)
> > +		return -ENOMEM;
> > +
> > +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> > +	if (!tz->trip_temp_attrs) {
> > +		kfree(tz->trip_type_attrs);
> > +		return -ENOMEM;
> > +	}
> > +
> > +	if (tz->ops->get_trip_hyst) {
> > +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> > +		if (!tz->trip_hyst_attrs) {
> > +			kfree(tz->trip_type_attrs);
> > +			kfree(tz->trip_temp_attrs);
> > +			return -ENOMEM;
> > +		}
> > +	}
> > +
> > +
> > +	for (indx = 0; indx < tz->trips; indx++) {
> > +		/* create trip type attribute */
> > +		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
> > +			 "trip_point_%d_type", indx);
> > +
> > +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> > +		tz->trip_type_attrs[indx].attr.attr.name =
> > +						tz->trip_type_attrs[indx].name;
> > +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> > +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> > +
> > +		device_create_file(&tz->device,
> > +				   &tz->trip_type_attrs[indx].attr);
> > +
> > +		/* create trip temp attribute */
> > +		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
> > +			 "trip_point_%d_temp", indx);
> > +
> > +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> > +		tz->trip_temp_attrs[indx].attr.attr.name =
> > +						tz->trip_temp_attrs[indx].name;
> > +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> > +		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
> > +		if (mask & (1 << indx)) {
> > +			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
> > +			tz->trip_temp_attrs[indx].attr.store =
> > +							trip_point_temp_store;
> > +		}
> > +
> > +		device_create_file(&tz->device,
> > +				   &tz->trip_temp_attrs[indx].attr);
> > +
> > +		/* create Optional trip hyst attribute */
> > +		if (!tz->ops->get_trip_hyst)
> > +			continue;
> > +		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
> > +			 "trip_point_%d_hyst", indx);
> > +
> > +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> > +		tz->trip_hyst_attrs[indx].attr.attr.name =
> > +					tz->trip_hyst_attrs[indx].name;
> > +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> > +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> > +		if (tz->ops->set_trip_hyst) {
> > +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> > +			tz->trip_hyst_attrs[indx].attr.store =
> > +					trip_point_hyst_store;
> > +		}
> > +
> > +		device_create_file(&tz->device,
> > +				   &tz->trip_hyst_attrs[indx].attr);
> > +	}
> > +	return 0;
> > +}
> > +
> > +static void remove_trip_attrs(struct thermal_zone_device *tz)
> > +{
> > +	int indx;
> > +
> > +	for (indx = 0; indx < tz->trips; indx++) {
> > +		device_remove_file(&tz->device,
> > +				   &tz->trip_type_attrs[indx].attr);
> > +		device_remove_file(&tz->device,
> > +				   &tz->trip_temp_attrs[indx].attr);
> > +		if (tz->ops->get_trip_hyst)
> > +			device_remove_file(&tz->device,
> > +				  &tz->trip_hyst_attrs[indx].attr);
> > +	}
> > +	kfree(tz->trip_type_attrs);
> > +	kfree(tz->trip_temp_attrs);
> > +	kfree(tz->trip_hyst_attrs);
> > +}
> > +
> > +/**
> > + * thermal_zone_device_register - register a new thermal zone device
> > + * @type:	the thermal zone device type
> > + * @trips:	the number of trip points the thermal zone support
> > + * @mask:	a bit string indicating the writeablility of trip points
> > + * @devdata:	private device data
> > + * @ops:	standard thermal zone device callbacks
> > + * @tzp:	thermal zone platform parameters
> > + * @passive_delay: number of milliseconds to wait between polls when
> > + *		   performing passive cooling
> > + * @polling_delay: number of milliseconds to wait between polls when checking
> > + *		   whether trip points have been crossed (0 for interrupt
> > + *		   driven systems)
> > + *
> > + * thermal_zone_device_unregister() must be called when the device is no
> > + * longer needed. The passive cooling depends on the .get_trend() return value.
> > + */
> > +struct thermal_zone_device *thermal_zone_device_register(const char *type,
> > +	int trips, int mask, void *devdata,
> > +	const struct thermal_zone_device_ops *ops,
> > +	const struct thermal_zone_params *tzp,
> > +	int passive_delay, int polling_delay)
> > +{
> > +	struct thermal_zone_device *tz;
> > +	enum thermal_trip_type trip_type;
> > +	int result;
> > +	int count;
> > +	int passive = 0;
> > +
> > +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (!ops || !ops->get_temp)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	if (trips > 0 && !ops->get_trip_type)
> > +		return ERR_PTR(-EINVAL);
> > +
> > +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> > +	if (!tz)
> > +		return ERR_PTR(-ENOMEM);
> > +
> > +	INIT_LIST_HEAD(&tz->thermal_instances);
> > +	idr_init(&tz->idr);
> > +	mutex_init(&tz->lock);
> > +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> > +	if (result) {
> > +		kfree(tz);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	strcpy(tz->type, type ? : "");
> > +	tz->ops = ops;
> > +	tz->tzp = tzp;
> > +	tz->device.class = &thermal_class;
> > +	tz->devdata = devdata;
> > +	tz->trips = trips;
> > +	tz->passive_delay = passive_delay;
> > +	tz->polling_delay = polling_delay;
> > +
> > +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> > +	result = device_register(&tz->device);
> > +	if (result) {
> > +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > +		kfree(tz);
> > +		return ERR_PTR(result);
> > +	}
> > +
> > +	/* sys I/F */
> > +	if (type) {
> > +		result = device_create_file(&tz->device, &dev_attr_type);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +	result = device_create_file(&tz->device, &dev_attr_temp);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	if (ops->get_mode) {
> > +		result = device_create_file(&tz->device, &dev_attr_mode);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +	result = create_trip_attrs(tz, mask);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	for (count = 0; count < trips; count++) {
> > +		tz->ops->get_trip_type(tz, count, &trip_type);
> > +		if (trip_type == THERMAL_TRIP_PASSIVE)
> > +			passive = 1;
> > +	}
> > +
> > +	if (!passive) {
> > +		result = device_create_file(&tz->device, &dev_attr_passive);
> > +		if (result)
> > +			goto unregister;
> > +	}
> > +
> > +#ifdef CONFIG_THERMAL_EMULATION
> > +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> > +	if (result)
> > +		goto unregister;
> > +#endif
> > +	/* Create policy attribute */
> > +	result = device_create_file(&tz->device, &dev_attr_policy);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	/* Update 'this' zone's governor information */
> > +	mutex_lock(&thermal_governor_lock);
> > +
> > +	if (tz->tzp)
> > +		tz->governor = __find_governor(tz->tzp->governor_name);
> > +	else
> > +		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
> > +
> > +	mutex_unlock(&thermal_governor_lock);
> > +
> > +	result = thermal_add_hwmon_sysfs(tz);
> > +	if (result)
> > +		goto unregister;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_add_tail(&tz->node, &thermal_tz_list);
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	/* Bind cooling devices for this zone */
> > +	bind_tz(tz);
> > +
> > +	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
> > +
> > +	thermal_zone_device_update(tz);
> > +
> > +	if (!result)
> > +		return tz;
> > +
> > +unregister:
> > +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > +	device_unregister(&tz->device);
> > +	return ERR_PTR(result);
> > +}
> > +EXPORT_SYMBOL(thermal_zone_device_register);
> > +
> > +/**
> > + * thermal_device_unregister - removes the registered thermal zone device
> > + * @tz: the thermal zone device to remove
> > + */
> > +void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> > +{
> > +	int i;
> > +	const struct thermal_zone_params *tzp;
> > +	struct thermal_cooling_device *cdev;
> > +	struct thermal_zone_device *pos = NULL;
> > +
> > +	if (!tz)
> > +		return;
> > +
> > +	tzp = tz->tzp;
> > +
> > +	mutex_lock(&thermal_list_lock);
> > +	list_for_each_entry(pos, &thermal_tz_list, node)
> > +	    if (pos == tz)
> > +		break;
> > +	if (pos != tz) {
> > +		/* thermal zone device not found */
> > +		mutex_unlock(&thermal_list_lock);
> > +		return;
> > +	}
> > +	list_del(&tz->node);
> > +
> > +	/* Unbind all cdevs associated with 'this' thermal zone */
> > +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > +		if (tz->ops->unbind) {
> > +			tz->ops->unbind(tz, cdev);
> > +			continue;
> > +		}
> > +
> > +		if (!tzp || !tzp->tbp)
> > +			break;
> > +
> > +		for (i = 0; i < tzp->num_tbps; i++) {
> > +			if (tzp->tbp[i].cdev == cdev) {
> > +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > +				tzp->tbp[i].cdev = NULL;
> > +			}
> > +		}
> > +	}
> > +
> > +	mutex_unlock(&thermal_list_lock);
> > +
> > +	thermal_zone_device_set_polling(tz, 0);
> > +
> > +	if (tz->type[0])
> > +		device_remove_file(&tz->device, &dev_attr_type);
> > +	device_remove_file(&tz->device, &dev_attr_temp);
> > +	if (tz->ops->get_mode)
> > +		device_remove_file(&tz->device, &dev_attr_mode);
> > +	device_remove_file(&tz->device, &dev_attr_policy);
> > +	remove_trip_attrs(tz);
> > +	tz->governor = NULL;
> > +
> > +	thermal_remove_hwmon_sysfs(tz);
> > +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > +	idr_destroy(&tz->idr);
> > +	mutex_destroy(&tz->lock);
> > +	device_unregister(&tz->device);
> > +	return;
> > +}
> > +EXPORT_SYMBOL(thermal_zone_device_unregister);
> > +
> > +#ifdef CONFIG_NET
> > +static struct genl_family thermal_event_genl_family = {
> > +	.id = GENL_ID_GENERATE,
> > +	.name = THERMAL_GENL_FAMILY_NAME,
> > +	.version = THERMAL_GENL_VERSION,
> > +	.maxattr = THERMAL_GENL_ATTR_MAX,
> > +};
> > +
> > +static struct genl_multicast_group thermal_event_mcgrp = {
> > +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> > +};
> > +
> > +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> > +					enum events event)
> > +{
> > +	struct sk_buff *skb;
> > +	struct nlattr *attr;
> > +	struct thermal_genl_event *thermal_event;
> > +	void *msg_header;
> > +	int size;
> > +	int result;
> > +	static unsigned int thermal_event_seqnum;
> > +
> > +	if (!tz)
> > +		return -EINVAL;
> > +
> > +	/* allocate memory */
> > +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> > +	       nla_total_size(0);
> > +
> > +	skb = genlmsg_new(size, GFP_ATOMIC);
> > +	if (!skb)
> > +		return -ENOMEM;
> > +
> > +	/* add the genetlink message header */
> > +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> > +				 &thermal_event_genl_family, 0,
> > +				 THERMAL_GENL_CMD_EVENT);
> > +	if (!msg_header) {
> > +		nlmsg_free(skb);
> > +		return -ENOMEM;
> > +	}
> > +
> > +	/* fill the data */
> > +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> > +			   sizeof(struct thermal_genl_event));
> > +
> > +	if (!attr) {
> > +		nlmsg_free(skb);
> > +		return -EINVAL;
> > +	}
> > +
> > +	thermal_event = nla_data(attr);
> > +	if (!thermal_event) {
> > +		nlmsg_free(skb);
> > +		return -EINVAL;
> > +	}
> > +
> > +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> > +
> > +	thermal_event->orig = tz->id;
> > +	thermal_event->event = event;
> > +
> > +	/* send multicast genetlink message */
> > +	result = genlmsg_end(skb, msg_header);
> > +	if (result < 0) {
> > +		nlmsg_free(skb);
> > +		return result;
> > +	}
> > +
> > +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
> > +	if (result)
> > +		dev_err(&tz->device, "Failed to send netlink event:%d", result);
> > +
> > +	return result;
> > +}
> > +EXPORT_SYMBOL(thermal_generate_netlink_event);
> > +
> > +static int genetlink_init(void)
> > +{
> > +	int result;
> > +
> > +	result = genl_register_family(&thermal_event_genl_family);
> > +	if (result)
> > +		return result;
> > +
> > +	result = genl_register_mc_group(&thermal_event_genl_family,
> > +					&thermal_event_mcgrp);
> > +	if (result)
> > +		genl_unregister_family(&thermal_event_genl_family);
> > +	return result;
> > +}
> > +
> > +static void genetlink_exit(void)
> > +{
> > +	genl_unregister_family(&thermal_event_genl_family);
> > +}
> > +#else /* !CONFIG_NET */
> > +static inline int genetlink_init(void) { return 0; }
> > +static inline void genetlink_exit(void) {}
> > +#endif /* !CONFIG_NET */
> > +
> > +static int __init thermal_init(void)
> > +{
> > +	int result = 0;
> > +
> > +	result = class_register(&thermal_class);
> > +	if (result) {
> > +		idr_destroy(&thermal_tz_idr);
> > +		idr_destroy(&thermal_cdev_idr);
> > +		mutex_destroy(&thermal_idr_lock);
> > +		mutex_destroy(&thermal_list_lock);
> > +		return result;
> > +	}
> > +	result = genetlink_init();
> > +	return result;
> > +}
> > +
> > +static void __exit thermal_exit(void)
> > +{
> > +	class_unregister(&thermal_class);
> > +	idr_destroy(&thermal_tz_idr);
> > +	idr_destroy(&thermal_cdev_idr);
> > +	mutex_destroy(&thermal_idr_lock);
> > +	mutex_destroy(&thermal_list_lock);
> > +	genetlink_exit();
> > +}
> > +
> > +fs_initcall(thermal_init);
> > +module_exit(thermal_exit);
> > diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
> > deleted file mode 100644
> > index 5b7863a..0000000
> > --- a/drivers/thermal/thermal_sys.c
> > +++ /dev/null
> > @@ -1,1888 +0,0 @@
> > -/*
> > - *  thermal.c - Generic Thermal Management Sysfs support.
> > - *
> > - *  Copyright (C) 2008 Intel Corp
> > - *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> > - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> > - *
> > - *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > - *
> > - *  This program is free software; you can redistribute it and/or modify
> > - *  it under the terms of the GNU General Public License as published by
> > - *  the Free Software Foundation; version 2 of the License.
> > - *
> > - *  This program is distributed in the hope that it will be useful, but
> > - *  WITHOUT ANY WARRANTY; without even the implied warranty of
> > - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> > - *  General Public License for more details.
> > - *
> > - *  You should have received a copy of the GNU General Public License along
> > - *  with this program; if not, write to the Free Software Foundation, Inc.,
> > - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> > - *
> > - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > - */
> > -
> > -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > -
> > -#include <linux/module.h>
> > -#include <linux/device.h>
> > -#include <linux/err.h>
> > -#include <linux/slab.h>
> > -#include <linux/kdev_t.h>
> > -#include <linux/idr.h>
> > -#include <linux/thermal.h>
> > -#include <linux/reboot.h>
> > -#include <net/netlink.h>
> > -#include <net/genetlink.h>
> > -
> > -#include "thermal_core.h"
> > -
> > -MODULE_AUTHOR("Zhang Rui");
> > -MODULE_DESCRIPTION("Generic thermal management sysfs support");
> > -MODULE_LICENSE("GPL");
> > -
> > -static DEFINE_IDR(thermal_tz_idr);
> > -static DEFINE_IDR(thermal_cdev_idr);
> > -static DEFINE_MUTEX(thermal_idr_lock);
> > -
> > -static LIST_HEAD(thermal_tz_list);
> > -static LIST_HEAD(thermal_cdev_list);
> > -static LIST_HEAD(thermal_governor_list);
> > -
> > -static DEFINE_MUTEX(thermal_list_lock);
> > -static DEFINE_MUTEX(thermal_governor_lock);
> > -
> > -static struct thermal_governor *__find_governor(const char *name)
> > -{
> > -	struct thermal_governor *pos;
> > -
> > -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> > -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> > -			return pos;
> > -
> > -	return NULL;
> > -}
> > -
> > -int thermal_register_governor(struct thermal_governor *governor)
> > -{
> > -	int err;
> > -	const char *name;
> > -	struct thermal_zone_device *pos;
> > -
> > -	if (!governor)
> > -		return -EINVAL;
> > -
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	err = -EBUSY;
> > -	if (__find_governor(governor->name) == NULL) {
> > -		err = 0;
> > -		list_add(&governor->governor_list, &thermal_governor_list);
> > -	}
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	list_for_each_entry(pos, &thermal_tz_list, node) {
> > -		if (pos->governor)
> > -			continue;
> > -		if (pos->tzp)
> > -			name = pos->tzp->governor_name;
> > -		else
> > -			name = DEFAULT_THERMAL_GOVERNOR;
> > -		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
> > -			pos->governor = governor;
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -	mutex_unlock(&thermal_governor_lock);
> > -
> > -	return err;
> > -}
> > -EXPORT_SYMBOL_GPL(thermal_register_governor);
> > -
> > -void thermal_unregister_governor(struct thermal_governor *governor)
> > -{
> > -	struct thermal_zone_device *pos;
> > -
> > -	if (!governor)
> > -		return;
> > -
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	if (__find_governor(governor->name) == NULL)
> > -		goto exit;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	list_for_each_entry(pos, &thermal_tz_list, node) {
> > -		if (!strnicmp(pos->governor->name, governor->name,
> > -						THERMAL_NAME_LENGTH))
> > -			pos->governor = NULL;
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -	list_del(&governor->governor_list);
> > -exit:
> > -	mutex_unlock(&thermal_governor_lock);
> > -	return;
> > -}
> > -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> > -
> > -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> > -{
> > -	int ret;
> > -
> > -	if (lock)
> > -		mutex_lock(lock);
> > -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> > -	if (lock)
> > -		mutex_unlock(lock);
> > -	if (unlikely(ret < 0))
> > -		return ret;
> > -	*id = ret;
> > -	return 0;
> > -}
> > -
> > -static void release_idr(struct idr *idr, struct mutex *lock, int id)
> > -{
> > -	if (lock)
> > -		mutex_lock(lock);
> > -	idr_remove(idr, id);
> > -	if (lock)
> > -		mutex_unlock(lock);
> > -}
> > -
> > -int get_tz_trend(struct thermal_zone_device *tz, int trip)
> > -{
> > -	enum thermal_trend trend;
> > -
> > -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> > -		if (tz->temperature > tz->last_temperature)
> > -			trend = THERMAL_TREND_RAISING;
> > -		else if (tz->temperature < tz->last_temperature)
> > -			trend = THERMAL_TREND_DROPPING;
> > -		else
> > -			trend = THERMAL_TREND_STABLE;
> > -	}
> > -
> > -	return trend;
> > -}
> > -EXPORT_SYMBOL(get_tz_trend);
> > -
> > -struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
> > -			struct thermal_cooling_device *cdev, int trip)
> > -{
> > -	struct thermal_instance *pos = NULL;
> > -	struct thermal_instance *target_instance = NULL;
> > -
> > -	mutex_lock(&tz->lock);
> > -	mutex_lock(&cdev->lock);
> > -
> > -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> > -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > -			target_instance = pos;
> > -			break;
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&cdev->lock);
> > -	mutex_unlock(&tz->lock);
> > -
> > -	return target_instance;
> > -}
> > -EXPORT_SYMBOL(get_thermal_instance);
> > -
> > -static void print_bind_err_msg(struct thermal_zone_device *tz,
> > -			struct thermal_cooling_device *cdev, int ret)
> > -{
> > -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> > -				tz->type, cdev->type, ret);
> > -}
> > -
> > -static void __bind(struct thermal_zone_device *tz, int mask,
> > -			struct thermal_cooling_device *cdev)
> > -{
> > -	int i, ret;
> > -
> > -	for (i = 0; i < tz->trips; i++) {
> > -		if (mask & (1 << i)) {
> > -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> > -					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
> > -			if (ret)
> > -				print_bind_err_msg(tz, cdev, ret);
> > -		}
> > -	}
> > -}
> > -
> > -static void __unbind(struct thermal_zone_device *tz, int mask,
> > -			struct thermal_cooling_device *cdev)
> > -{
> > -	int i;
> > -
> > -	for (i = 0; i < tz->trips; i++)
> > -		if (mask & (1 << i))
> > -			thermal_zone_unbind_cooling_device(tz, i, cdev);
> > -}
> > -
> > -static void bind_cdev(struct thermal_cooling_device *cdev)
> > -{
> > -	int i, ret;
> > -	const struct thermal_zone_params *tzp;
> > -	struct thermal_zone_device *pos = NULL;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	list_for_each_entry(pos, &thermal_tz_list, node) {
> > -		if (!pos->tzp && !pos->ops->bind)
> > -			continue;
> > -
> > -		if (!pos->tzp && pos->ops->bind) {
> > -			ret = pos->ops->bind(pos, cdev);
> > -			if (ret)
> > -				print_bind_err_msg(pos, cdev, ret);
> > -		}
> > -
> > -		tzp = pos->tzp;
> > -		if (!tzp || !tzp->tbp)
> > -			continue;
> > -
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > -				continue;
> > -			if (tzp->tbp[i].match(pos, cdev))
> > -				continue;
> > -			tzp->tbp[i].cdev = cdev;
> > -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -}
> > -
> > -static void bind_tz(struct thermal_zone_device *tz)
> > -{
> > -	int i, ret;
> > -	struct thermal_cooling_device *pos = NULL;
> > -	const struct thermal_zone_params *tzp = tz->tzp;
> > -
> > -	if (!tzp && !tz->ops->bind)
> > -		return;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -
> > -	/* If there is no platform data, try to use ops->bind */
> > -	if (!tzp && tz->ops->bind) {
> > -		list_for_each_entry(pos, &thermal_cdev_list, node) {
> > -			ret = tz->ops->bind(tz, pos);
> > -			if (ret)
> > -				print_bind_err_msg(tz, pos, ret);
> > -		}
> > -		goto exit;
> > -	}
> > -
> > -	if (!tzp || !tzp->tbp)
> > -		goto exit;
> > -
> > -	list_for_each_entry(pos, &thermal_cdev_list, node) {
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> > -				continue;
> > -			if (tzp->tbp[i].match(tz, pos))
> > -				continue;
> > -			tzp->tbp[i].cdev = pos;
> > -			__bind(tz, tzp->tbp[i].trip_mask, pos);
> > -		}
> > -	}
> > -exit:
> > -	mutex_unlock(&thermal_list_lock);
> > -}
> > -
> > -static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
> > -					    int delay)
> > -{
> > -	if (delay > 1000)
> > -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> > -				 round_jiffies(msecs_to_jiffies(delay)));
> > -	else if (delay)
> > -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
> > -				 msecs_to_jiffies(delay));
> > -	else
> > -		cancel_delayed_work(&tz->poll_queue);
> > -}
> > -
> > -static void monitor_thermal_zone(struct thermal_zone_device *tz)
> > -{
> > -	mutex_lock(&tz->lock);
> > -
> > -	if (tz->passive)
> > -		thermal_zone_device_set_polling(tz, tz->passive_delay);
> > -	else if (tz->polling_delay)
> > -		thermal_zone_device_set_polling(tz, tz->polling_delay);
> > -	else
> > -		thermal_zone_device_set_polling(tz, 0);
> > -
> > -	mutex_unlock(&tz->lock);
> > -}
> > -
> > -static void handle_non_critical_trips(struct thermal_zone_device *tz,
> > -			int trip, enum thermal_trip_type trip_type)
> > -{
> > -	if (tz->governor)
> > -		tz->governor->throttle(tz, trip);
> > -}
> > -
> > -static void handle_critical_trips(struct thermal_zone_device *tz,
> > -				int trip, enum thermal_trip_type trip_type)
> > -{
> > -	long trip_temp;
> > -
> > -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> > -
> > -	/* If we have not crossed the trip_temp, we do not care. */
> > -	if (tz->temperature < trip_temp)
> > -		return;
> > -
> > -	if (tz->ops->notify)
> > -		tz->ops->notify(tz, trip, trip_type);
> > -
> > -	if (trip_type == THERMAL_TRIP_CRITICAL) {
> > -		dev_emerg(&tz->device,
> > -			  "critical temperature reached(%d C),shutting down\n",
> > -			  tz->temperature / 1000);
> > -		orderly_poweroff(true);
> > -	}
> > -}
> > -
> > -static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
> > -{
> > -	enum thermal_trip_type type;
> > -
> > -	tz->ops->get_trip_type(tz, trip, &type);
> > -
> > -	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
> > -		handle_critical_trips(tz, trip, type);
> > -	else
> > -		handle_non_critical_trips(tz, trip, type);
> > -	/*
> > -	 * Alright, we handled this trip successfully.
> > -	 * So, start monitoring again.
> > -	 */
> > -	monitor_thermal_zone(tz);
> > -}
> > -
> > -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> > -				unsigned long *temp)
> > -{
> > -	int ret = 0;
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -	int count;
> > -	unsigned long crit_temp = -1UL;
> > -	enum thermal_trip_type type;
> > -#endif
> > -
> > -	mutex_lock(&tz->lock);
> > -
> > -	ret = tz->ops->get_temp(tz, temp);
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -	if (!tz->emul_temperature)
> > -		goto skip_emul;
> > -
> > -	for (count = 0; count < tz->trips; count++) {
> > -		ret = tz->ops->get_trip_type(tz, count, &type);
> > -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> > -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> > -			break;
> > -		}
> > -	}
> > -
> > -	if (ret)
> > -		goto skip_emul;
> > -
> > -	if (*temp < crit_temp)
> > -		*temp = tz->emul_temperature;
> > -skip_emul:
> > -#endif
> > -	mutex_unlock(&tz->lock);
> > -	return ret;
> > -}
> > -
> > -static void update_temperature(struct thermal_zone_device *tz)
> > -{
> > -	long temp;
> > -	int ret;
> > -
> > -	ret = thermal_zone_get_temp(tz, &temp);
> > -	if (ret) {
> > -		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
> > -			 tz->id);
> > -		return;
> > -	}
> > -
> > -	mutex_lock(&tz->lock);
> > -	tz->last_temperature = tz->temperature;
> > -	tz->temperature = temp;
> > -	mutex_unlock(&tz->lock);
> > -}
> > -
> > -void thermal_zone_device_update(struct thermal_zone_device *tz)
> > -{
> > -	int count;
> > -
> > -	update_temperature(tz);
> > -
> > -	for (count = 0; count < tz->trips; count++)
> > -		handle_thermal_trip(tz, count);
> > -}
> > -EXPORT_SYMBOL(thermal_zone_device_update);
> > -
> > -static void thermal_zone_device_check(struct work_struct *work)
> > -{
> > -	struct thermal_zone_device *tz = container_of(work, struct
> > -						      thermal_zone_device,
> > -						      poll_queue.work);
> > -	thermal_zone_device_update(tz);
> > -}
> > -
> > -/* sys I/F for thermal zone */
> > -
> > -#define to_thermal_zone(_dev) \
> > -	container_of(_dev, struct thermal_zone_device, device)
> > -
> > -static ssize_t
> > -type_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -
> > -	return sprintf(buf, "%s\n", tz->type);
> > -}
> > -
> > -static ssize_t
> > -temp_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	long temperature;
> > -	int ret;
> > -
> > -	ret = thermal_zone_get_temp(tz, &temperature);
> > -
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	enum thermal_device_mode mode;
> > -	int result;
> > -
> > -	if (!tz->ops->get_mode)
> > -		return -EPERM;
> > -
> > -	result = tz->ops->get_mode(tz, &mode);
> > -	if (result)
> > -		return result;
> > -
> > -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
> > -		       : "disabled");
> > -}
> > -
> > -static ssize_t
> > -mode_store(struct device *dev, struct device_attribute *attr,
> > -	   const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int result;
> > -
> > -	if (!tz->ops->set_mode)
> > -		return -EPERM;
> > -
> > -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> > -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
> > -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> > -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
> > -	else
> > -		result = -EINVAL;
> > -
> > -	if (result)
> > -		return result;
> > -
> > -	return count;
> > -}
> > -
> > -static ssize_t
> > -trip_point_type_show(struct device *dev, struct device_attribute *attr,
> > -		     char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	enum thermal_trip_type type;
> > -	int trip, result;
> > -
> > -	if (!tz->ops->get_trip_type)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> > -		return -EINVAL;
> > -
> > -	result = tz->ops->get_trip_type(tz, trip, &type);
> > -	if (result)
> > -		return result;
> > -
> > -	switch (type) {
> > -	case THERMAL_TRIP_CRITICAL:
> > -		return sprintf(buf, "critical\n");
> > -	case THERMAL_TRIP_HOT:
> > -		return sprintf(buf, "hot\n");
> > -	case THERMAL_TRIP_PASSIVE:
> > -		return sprintf(buf, "passive\n");
> > -	case THERMAL_TRIP_ACTIVE:
> > -		return sprintf(buf, "active\n");
> > -	default:
> > -		return sprintf(buf, "unknown\n");
> > -	}
> > -}
> > -
> > -static ssize_t
> > -trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> > -		     const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	unsigned long temperature;
> > -
> > -	if (!tz->ops->set_trip_temp)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > -		return -EINVAL;
> > -
> > -	if (kstrtoul(buf, 10, &temperature))
> > -		return -EINVAL;
> > -
> > -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> > -
> > -	return ret ? ret : count;
> > -}
> > -
> > -static ssize_t
> > -trip_point_temp_show(struct device *dev, struct device_attribute *attr,
> > -		     char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	long temperature;
> > -
> > -	if (!tz->ops->get_trip_temp)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> > -		return -EINVAL;
> > -
> > -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> > -
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> > -			const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	unsigned long temperature;
> > -
> > -	if (!tz->ops->set_trip_hyst)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > -		return -EINVAL;
> > -
> > -	if (kstrtoul(buf, 10, &temperature))
> > -		return -EINVAL;
> > -
> > -	/*
> > -	 * We are not doing any check on the 'temperature' value
> > -	 * here. The driver implementing 'set_trip_hyst' has to
> > -	 * take care of this.
> > -	 */
> > -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> > -
> > -	return ret ? ret : count;
> > -}
> > -
> > -static ssize_t
> > -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> > -			char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int trip, ret;
> > -	unsigned long temperature;
> > -
> > -	if (!tz->ops->get_trip_hyst)
> > -		return -EPERM;
> > -
> > -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> > -		return -EINVAL;
> > -
> > -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> > -
> > -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -passive_store(struct device *dev, struct device_attribute *attr,
> > -		    const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	struct thermal_cooling_device *cdev = NULL;
> > -	int state;
> > -
> > -	if (!sscanf(buf, "%d\n", &state))
> > -		return -EINVAL;
> > -
> > -	/* sanity check: values below 1000 millicelcius don't make sense
> > -	 * and can cause the system to go into a thermal heart attack
> > -	 */
> > -	if (state && state < 1000)
> > -		return -EINVAL;
> > -
> > -	if (state && !tz->forced_passive) {
> > -		mutex_lock(&thermal_list_lock);
> > -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > -			if (!strncmp("Processor", cdev->type,
> > -				     sizeof("Processor")))
> > -				thermal_zone_bind_cooling_device(tz,
> > -						THERMAL_TRIPS_NONE, cdev,
> > -						THERMAL_NO_LIMIT,
> > -						THERMAL_NO_LIMIT);
> > -		}
> > -		mutex_unlock(&thermal_list_lock);
> > -		if (!tz->passive_delay)
> > -			tz->passive_delay = 1000;
> > -	} else if (!state && tz->forced_passive) {
> > -		mutex_lock(&thermal_list_lock);
> > -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > -			if (!strncmp("Processor", cdev->type,
> > -				     sizeof("Processor")))
> > -				thermal_zone_unbind_cooling_device(tz,
> > -								   THERMAL_TRIPS_NONE,
> > -								   cdev);
> > -		}
> > -		mutex_unlock(&thermal_list_lock);
> > -		tz->passive_delay = 0;
> > -	}
> > -
> > -	tz->forced_passive = state;
> > -
> > -	thermal_zone_device_update(tz);
> > -
> > -	return count;
> > -}
> > -
> > -static ssize_t
> > -passive_show(struct device *dev, struct device_attribute *attr,
> > -		   char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -
> > -	return sprintf(buf, "%d\n", tz->forced_passive);
> > -}
> > -
> > -static ssize_t
> > -policy_store(struct device *dev, struct device_attribute *attr,
> > -		    const char *buf, size_t count)
> > -{
> > -	int ret = -EINVAL;
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	struct thermal_governor *gov;
> > -
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	gov = __find_governor(buf);
> > -	if (!gov)
> > -		goto exit;
> > -
> > -	tz->governor = gov;
> > -	ret = count;
> > -
> > -exit:
> > -	mutex_unlock(&thermal_governor_lock);
> > -	return ret;
> > -}
> > -
> > -static ssize_t
> > -policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -
> > -	return sprintf(buf, "%s\n", tz->governor->name);
> > -}
> > -
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -static ssize_t
> > -emul_temp_store(struct device *dev, struct device_attribute *attr,
> > -		     const char *buf, size_t count)
> > -{
> > -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> > -	int ret = 0;
> > -	unsigned long temperature;
> > -
> > -	if (kstrtoul(buf, 10, &temperature))
> > -		return -EINVAL;
> > -
> > -	if (!tz->ops->set_emul_temp) {
> > -		mutex_lock(&tz->lock);
> > -		tz->emul_temperature = temperature;
> > -		mutex_unlock(&tz->lock);
> > -	} else {
> > -		ret = tz->ops->set_emul_temp(tz, temperature);
> > -	}
> > -
> > -	return ret ? ret : count;
> > -}
> > -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> > -#endif/*CONFIG_THERMAL_EMULATION*/
> > -
> > -static DEVICE_ATTR(type, 0444, type_show, NULL);
> > -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> > -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> > -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
> > -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
> > -
> > -/* sys I/F for cooling device */
> > -#define to_cooling_device(_dev)	\
> > -	container_of(_dev, struct thermal_cooling_device, device)
> > -
> > -static ssize_t
> > -thermal_cooling_device_type_show(struct device *dev,
> > -				 struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -
> > -	return sprintf(buf, "%s\n", cdev->type);
> > -}
> > -
> > -static ssize_t
> > -thermal_cooling_device_max_state_show(struct device *dev,
> > -				      struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -	unsigned long state;
> > -	int ret;
> > -
> > -	ret = cdev->ops->get_max_state(cdev, &state);
> > -	if (ret)
> > -		return ret;
> > -	return sprintf(buf, "%ld\n", state);
> > -}
> > -
> > -static ssize_t
> > -thermal_cooling_device_cur_state_show(struct device *dev,
> > -				      struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -	unsigned long state;
> > -	int ret;
> > -
> > -	ret = cdev->ops->get_cur_state(cdev, &state);
> > -	if (ret)
> > -		return ret;
> > -	return sprintf(buf, "%ld\n", state);
> > -}
> > -
> > -static ssize_t
> > -thermal_cooling_device_cur_state_store(struct device *dev,
> > -				       struct device_attribute *attr,
> > -				       const char *buf, size_t count)
> > -{
> > -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> > -	unsigned long state;
> > -	int result;
> > -
> > -	if (!sscanf(buf, "%ld\n", &state))
> > -		return -EINVAL;
> > -
> > -	if ((long)state < 0)
> > -		return -EINVAL;
> > -
> > -	result = cdev->ops->set_cur_state(cdev, state);
> > -	if (result)
> > -		return result;
> > -	return count;
> > -}
> > -
> > -static struct device_attribute dev_attr_cdev_type =
> > -__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> > -static DEVICE_ATTR(max_state, 0444,
> > -		   thermal_cooling_device_max_state_show, NULL);
> > -static DEVICE_ATTR(cur_state, 0644,
> > -		   thermal_cooling_device_cur_state_show,
> > -		   thermal_cooling_device_cur_state_store);
> > -
> > -static ssize_t
> > -thermal_cooling_device_trip_point_show(struct device *dev,
> > -				       struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_instance *instance;
> > -
> > -	instance =
> > -	    container_of(attr, struct thermal_instance, attr);
> > -
> > -	if (instance->trip == THERMAL_TRIPS_NONE)
> > -		return sprintf(buf, "-1\n");
> > -	else
> > -		return sprintf(buf, "%d\n", instance->trip);
> > -}
> > -
> > -/* Device management */
> > -
> > -#if defined(CONFIG_THERMAL_HWMON)
> > -
> > -/* hwmon sys I/F */
> > -#include <linux/hwmon.h>
> > -
> > -/* thermal zone devices with the same type share one hwmon device */
> > -struct thermal_hwmon_device {
> > -	char type[THERMAL_NAME_LENGTH];
> > -	struct device *device;
> > -	int count;
> > -	struct list_head tz_list;
> > -	struct list_head node;
> > -};
> > -
> > -struct thermal_hwmon_attr {
> > -	struct device_attribute attr;
> > -	char name[16];
> > -};
> > -
> > -/* one temperature input for each thermal zone */
> > -struct thermal_hwmon_temp {
> > -	struct list_head hwmon_node;
> > -	struct thermal_zone_device *tz;
> > -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> > -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> > -};
> > -
> > -static LIST_HEAD(thermal_hwmon_list);
> > -
> > -static ssize_t
> > -name_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> > -	return sprintf(buf, "%s\n", hwmon->type);
> > -}
> > -static DEVICE_ATTR(name, 0444, name_show, NULL);
> > -
> > -static ssize_t
> > -temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
> > -{
> > -	long temperature;
> > -	int ret;
> > -	struct thermal_hwmon_attr *hwmon_attr
> > -			= container_of(attr, struct thermal_hwmon_attr, attr);
> > -	struct thermal_hwmon_temp *temp
> > -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> > -				       temp_input);
> > -	struct thermal_zone_device *tz = temp->tz;
> > -
> > -	ret = thermal_zone_get_temp(tz, &temperature);
> > -
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -static ssize_t
> > -temp_crit_show(struct device *dev, struct device_attribute *attr,
> > -		char *buf)
> > -{
> > -	struct thermal_hwmon_attr *hwmon_attr
> > -			= container_of(attr, struct thermal_hwmon_attr, attr);
> > -	struct thermal_hwmon_temp *temp
> > -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
> > -				       temp_crit);
> > -	struct thermal_zone_device *tz = temp->tz;
> > -	long temperature;
> > -	int ret;
> > -
> > -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> > -	if (ret)
> > -		return ret;
> > -
> > -	return sprintf(buf, "%ld\n", temperature);
> > -}
> > -
> > -
> > -static struct thermal_hwmon_device *
> > -thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_device *hwmon;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> > -		if (!strcmp(hwmon->type, tz->type)) {
> > -			mutex_unlock(&thermal_list_lock);
> > -			return hwmon;
> > -		}
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	return NULL;
> > -}
> > -
> > -/* Find the temperature input matching a given thermal zone */
> > -static struct thermal_hwmon_temp *
> > -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
> > -			  const struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_temp *temp;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> > -		if (temp->tz == tz) {
> > -			mutex_unlock(&thermal_list_lock);
> > -			return temp;
> > -		}
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	return NULL;
> > -}
> > -
> > -static int
> > -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_device *hwmon;
> > -	struct thermal_hwmon_temp *temp;
> > -	int new_hwmon_device = 1;
> > -	int result;
> > -
> > -	hwmon = thermal_hwmon_lookup_by_type(tz);
> > -	if (hwmon) {
> > -		new_hwmon_device = 0;
> > -		goto register_sys_interface;
> > -	}
> > -
> > -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
> > -	if (!hwmon)
> > -		return -ENOMEM;
> > -
> > -	INIT_LIST_HEAD(&hwmon->tz_list);
> > -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> > -	hwmon->device = hwmon_device_register(NULL);
> > -	if (IS_ERR(hwmon->device)) {
> > -		result = PTR_ERR(hwmon->device);
> > -		goto free_mem;
> > -	}
> > -	dev_set_drvdata(hwmon->device, hwmon);
> > -	result = device_create_file(hwmon->device, &dev_attr_name);
> > -	if (result)
> > -		goto free_mem;
> > -
> > - register_sys_interface:
> > -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> > -	if (!temp) {
> > -		result = -ENOMEM;
> > -		goto unregister_name;
> > -	}
> > -
> > -	temp->tz = tz;
> > -	hwmon->count++;
> > -
> > -	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
> > -		 "temp%d_input", hwmon->count);
> > -	temp->temp_input.attr.attr.name = temp->temp_input.name;
> > -	temp->temp_input.attr.attr.mode = 0444;
> > -	temp->temp_input.attr.show = temp_input_show;
> > -	sysfs_attr_init(&temp->temp_input.attr.attr);
> > -	result = device_create_file(hwmon->device, &temp->temp_input.attr);
> > -	if (result)
> > -		goto free_temp_mem;
> > -
> > -	if (tz->ops->get_crit_temp) {
> > -		unsigned long temperature;
> > -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> > -			snprintf(temp->temp_crit.name,
> > -				 sizeof(temp->temp_crit.name),
> > -				"temp%d_crit", hwmon->count);
> > -			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
> > -			temp->temp_crit.attr.attr.mode = 0444;
> > -			temp->temp_crit.attr.show = temp_crit_show;
> > -			sysfs_attr_init(&temp->temp_crit.attr.attr);
> > -			result = device_create_file(hwmon->device,
> > -						    &temp->temp_crit.attr);
> > -			if (result)
> > -				goto unregister_input;
> > -		}
> > -	}
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	if (new_hwmon_device)
> > -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> > -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	return 0;
> > -
> > - unregister_input:
> > -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > - free_temp_mem:
> > -	kfree(temp);
> > - unregister_name:
> > -	if (new_hwmon_device) {
> > -		device_remove_file(hwmon->device, &dev_attr_name);
> > -		hwmon_device_unregister(hwmon->device);
> > -	}
> > - free_mem:
> > -	if (new_hwmon_device)
> > -		kfree(hwmon);
> > -
> > -	return result;
> > -}
> > -
> > -static void
> > -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -	struct thermal_hwmon_device *hwmon;
> > -	struct thermal_hwmon_temp *temp;
> > -
> > -	hwmon = thermal_hwmon_lookup_by_type(tz);
> > -	if (unlikely(!hwmon)) {
> > -		/* Should never happen... */
> > -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> > -		return;
> > -	}
> > -
> > -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> > -	if (unlikely(!temp)) {
> > -		/* Should never happen... */
> > -		dev_dbg(&tz->device, "temperature input lookup failed!\n");
> > -		return;
> > -	}
> > -
> > -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> > -	if (tz->ops->get_crit_temp)
> > -		device_remove_file(hwmon->device, &temp->temp_crit.attr);
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_del(&temp->hwmon_node);
> > -	kfree(temp);
> > -	if (!list_empty(&hwmon->tz_list)) {
> > -		mutex_unlock(&thermal_list_lock);
> > -		return;
> > -	}
> > -	list_del(&hwmon->node);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	device_remove_file(hwmon->device, &dev_attr_name);
> > -	hwmon_device_unregister(hwmon->device);
> > -	kfree(hwmon);
> > -}
> > -#else
> > -static int
> > -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -	return 0;
> > -}
> > -
> > -static void
> > -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> > -{
> > -}
> > -#endif
> > -
> > -/**
> > - * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
> > - * @tz:		thermal zone device
> > - * @trip:	indicates which trip point the cooling devices is
> > - *		associated with in this thermal zone.
> > - * @cdev:	thermal cooling device
> > - *
> > - * This function is usually called in the thermal zone device .bind callback.
> > - */
> > -int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
> > -				     int trip,
> > -				     struct thermal_cooling_device *cdev,
> > -				     unsigned long upper, unsigned long lower)
> > -{
> > -	struct thermal_instance *dev;
> > -	struct thermal_instance *pos;
> > -	struct thermal_zone_device *pos1;
> > -	struct thermal_cooling_device *pos2;
> > -	unsigned long max_state;
> > -	int result;
> > -
> > -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> > -		return -EINVAL;
> > -
> > -	list_for_each_entry(pos1, &thermal_tz_list, node) {
> > -		if (pos1 == tz)
> > -			break;
> > -	}
> > -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> > -		if (pos2 == cdev)
> > -			break;
> > -	}
> > -
> > -	if (tz != pos1 || cdev != pos2)
> > -		return -EINVAL;
> > -
> > -	cdev->ops->get_max_state(cdev, &max_state);
> > -
> > -	/* lower default 0, upper default max_state */
> > -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> > -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> > -
> > -	if (lower > upper || upper > max_state)
> > -		return -EINVAL;
> > -
> > -	dev =
> > -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> > -	if (!dev)
> > -		return -ENOMEM;
> > -	dev->tz = tz;
> > -	dev->cdev = cdev;
> > -	dev->trip = trip;
> > -	dev->upper = upper;
> > -	dev->lower = lower;
> > -	dev->target = THERMAL_NO_TARGET;
> > -
> > -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> > -	if (result)
> > -		goto free_mem;
> > -
> > -	sprintf(dev->name, "cdev%d", dev->id);
> > -	result =
> > -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
> > -	if (result)
> > -		goto release_idr;
> > -
> > -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> > -	sysfs_attr_init(&dev->attr.attr);
> > -	dev->attr.attr.name = dev->attr_name;
> > -	dev->attr.attr.mode = 0444;
> > -	dev->attr.show = thermal_cooling_device_trip_point_show;
> > -	result = device_create_file(&tz->device, &dev->attr);
> > -	if (result)
> > -		goto remove_symbol_link;
> > -
> > -	mutex_lock(&tz->lock);
> > -	mutex_lock(&cdev->lock);
> > -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> > -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > -		result = -EEXIST;
> > -		break;
> > -	}
> > -	if (!result) {
> > -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> > -		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
> > -	}
> > -	mutex_unlock(&cdev->lock);
> > -	mutex_unlock(&tz->lock);
> > -
> > -	if (!result)
> > -		return 0;
> > -
> > -	device_remove_file(&tz->device, &dev->attr);
> > -remove_symbol_link:
> > -	sysfs_remove_link(&tz->device.kobj, dev->name);
> > -release_idr:
> > -	release_idr(&tz->idr, &tz->lock, dev->id);
> > -free_mem:
> > -	kfree(dev);
> > -	return result;
> > -}
> > -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> > -
> > -/**
> > - * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
> > - * @tz:		thermal zone device
> > - * @trip:	indicates which trip point the cooling devices is
> > - *		associated with in this thermal zone.
> > - * @cdev:	thermal cooling device
> > - *
> > - * This function is usually called in the thermal zone device .unbind callback.
> > - */
> > -int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
> > -				       int trip,
> > -				       struct thermal_cooling_device *cdev)
> > -{
> > -	struct thermal_instance *pos, *next;
> > -
> > -	mutex_lock(&tz->lock);
> > -	mutex_lock(&cdev->lock);
> > -	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
> > -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> > -			list_del(&pos->tz_node);
> > -			list_del(&pos->cdev_node);
> > -			mutex_unlock(&cdev->lock);
> > -			mutex_unlock(&tz->lock);
> > -			goto unbind;
> > -		}
> > -	}
> > -	mutex_unlock(&cdev->lock);
> > -	mutex_unlock(&tz->lock);
> > -
> > -	return -ENODEV;
> > -
> > -unbind:
> > -	device_remove_file(&tz->device, &pos->attr);
> > -	sysfs_remove_link(&tz->device.kobj, pos->name);
> > -	release_idr(&tz->idr, &tz->lock, pos->id);
> > -	kfree(pos);
> > -	return 0;
> > -}
> > -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> > -
> > -static void thermal_release(struct device *dev)
> > -{
> > -	struct thermal_zone_device *tz;
> > -	struct thermal_cooling_device *cdev;
> > -
> > -	if (!strncmp(dev_name(dev), "thermal_zone",
> > -		     sizeof("thermal_zone") - 1)) {
> > -		tz = to_thermal_zone(dev);
> > -		kfree(tz);
> > -	} else {
> > -		cdev = to_cooling_device(dev);
> > -		kfree(cdev);
> > -	}
> > -}
> > -
> > -static struct class thermal_class = {
> > -	.name = "thermal",
> > -	.dev_release = thermal_release,
> > -};
> > -
> > -/**
> > - * thermal_cooling_device_register - register a new thermal cooling device
> > - * @type:	the thermal cooling device type.
> > - * @devdata:	device private data.
> > - * @ops:		standard thermal cooling devices callbacks.
> > - */
> > -struct thermal_cooling_device *
> > -thermal_cooling_device_register(char *type, void *devdata,
> > -				const struct thermal_cooling_device_ops *ops)
> > -{
> > -	struct thermal_cooling_device *cdev;
> > -	int result;
> > -
> > -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> > -	    !ops->set_cur_state)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> > -	if (!cdev)
> > -		return ERR_PTR(-ENOMEM);
> > -
> > -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> > -	if (result) {
> > -		kfree(cdev);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	strcpy(cdev->type, type ? : "");
> > -	mutex_init(&cdev->lock);
> > -	INIT_LIST_HEAD(&cdev->thermal_instances);
> > -	cdev->ops = ops;
> > -	cdev->updated = true;
> > -	cdev->device.class = &thermal_class;
> > -	cdev->devdata = devdata;
> > -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> > -	result = device_register(&cdev->device);
> > -	if (result) {
> > -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > -		kfree(cdev);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	/* sys I/F */
> > -	if (type) {
> > -		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -	result = device_create_file(&cdev->device, &dev_attr_max_state);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	/* Add 'this' new cdev to the global cdev list */
> > -	mutex_lock(&thermal_list_lock);
> > -	list_add(&cdev->node, &thermal_cdev_list);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	/* Update binding information for 'this' new cdev */
> > -	bind_cdev(cdev);
> > -
> > -	return cdev;
> > -
> > -unregister:
> > -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > -	device_unregister(&cdev->device);
> > -	return ERR_PTR(result);
> > -}
> > -EXPORT_SYMBOL(thermal_cooling_device_register);
> > -
> > -/**
> > - * thermal_cooling_device_unregister - removes the registered thermal cooling device
> > - * @cdev:	the thermal cooling device to remove.
> > - *
> > - * thermal_cooling_device_unregister() must be called when the device is no
> > - * longer needed.
> > - */
> > -void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
> > -{
> > -	int i;
> > -	const struct thermal_zone_params *tzp;
> > -	struct thermal_zone_device *tz;
> > -	struct thermal_cooling_device *pos = NULL;
> > -
> > -	if (!cdev)
> > -		return;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(pos, &thermal_cdev_list, node)
> > -	    if (pos == cdev)
> > -		break;
> > -	if (pos != cdev) {
> > -		/* thermal cooling device not found */
> > -		mutex_unlock(&thermal_list_lock);
> > -		return;
> > -	}
> > -	list_del(&cdev->node);
> > -
> > -	/* Unbind all thermal zones associated with 'this' cdev */
> > -	list_for_each_entry(tz, &thermal_tz_list, node) {
> > -		if (tz->ops->unbind) {
> > -			tz->ops->unbind(tz, cdev);
> > -			continue;
> > -		}
> > -
> > -		if (!tz->tzp || !tz->tzp->tbp)
> > -			continue;
> > -
> > -		tzp = tz->tzp;
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev == cdev) {
> > -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > -				tzp->tbp[i].cdev = NULL;
> > -			}
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	if (cdev->type[0])
> > -		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> > -	device_remove_file(&cdev->device, &dev_attr_max_state);
> > -	device_remove_file(&cdev->device, &dev_attr_cur_state);
> > -
> > -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> > -	device_unregister(&cdev->device);
> > -	return;
> > -}
> > -EXPORT_SYMBOL(thermal_cooling_device_unregister);
> > -
> > -void thermal_cdev_update(struct thermal_cooling_device *cdev)
> > -{
> > -	struct thermal_instance *instance;
> > -	unsigned long target = 0;
> > -
> > -	/* cooling device is updated*/
> > -	if (cdev->updated)
> > -		return;
> > -
> > -	mutex_lock(&cdev->lock);
> > -	/* Make sure cdev enters the deepest cooling state */
> > -	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
> > -		if (instance->target == THERMAL_NO_TARGET)
> > -			continue;
> > -		if (instance->target > target)
> > -			target = instance->target;
> > -	}
> > -	mutex_unlock(&cdev->lock);
> > -	cdev->ops->set_cur_state(cdev, target);
> > -	cdev->updated = true;
> > -}
> > -EXPORT_SYMBOL(thermal_cdev_update);
> > -
> > -/**
> > - * notify_thermal_framework - Sensor drivers use this API to notify framework
> > - * @tz:		thermal zone device
> > - * @trip:	indicates which trip point has been crossed
> > - *
> > - * This function handles the trip events from sensor drivers. It starts
> > - * throttling the cooling devices according to the policy configured.
> > - * For CRITICAL and HOT trip points, this notifies the respective drivers,
> > - * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
> > - * The throttling policy is based on the configured platform data; if no
> > - * platform data is provided, this uses the step_wise throttling policy.
> > - */
> > -void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
> > -{
> > -	handle_thermal_trip(tz, trip);
> > -}
> > -EXPORT_SYMBOL(notify_thermal_framework);
> > -
> > -/**
> > - * create_trip_attrs - create attributes for trip points
> > - * @tz:		the thermal zone device
> > - * @mask:	Writeable trip point bitmap.
> > - */
> > -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> > -{
> > -	int indx;
> > -	int size = sizeof(struct thermal_attr) * tz->trips;
> > -
> > -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> > -	if (!tz->trip_type_attrs)
> > -		return -ENOMEM;
> > -
> > -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> > -	if (!tz->trip_temp_attrs) {
> > -		kfree(tz->trip_type_attrs);
> > -		return -ENOMEM;
> > -	}
> > -
> > -	if (tz->ops->get_trip_hyst) {
> > -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> > -		if (!tz->trip_hyst_attrs) {
> > -			kfree(tz->trip_type_attrs);
> > -			kfree(tz->trip_temp_attrs);
> > -			return -ENOMEM;
> > -		}
> > -	}
> > -
> > -
> > -	for (indx = 0; indx < tz->trips; indx++) {
> > -		/* create trip type attribute */
> > -		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
> > -			 "trip_point_%d_type", indx);
> > -
> > -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> > -		tz->trip_type_attrs[indx].attr.attr.name =
> > -						tz->trip_type_attrs[indx].name;
> > -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> > -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> > -
> > -		device_create_file(&tz->device,
> > -				   &tz->trip_type_attrs[indx].attr);
> > -
> > -		/* create trip temp attribute */
> > -		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
> > -			 "trip_point_%d_temp", indx);
> > -
> > -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> > -		tz->trip_temp_attrs[indx].attr.attr.name =
> > -						tz->trip_temp_attrs[indx].name;
> > -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> > -		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
> > -		if (mask & (1 << indx)) {
> > -			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
> > -			tz->trip_temp_attrs[indx].attr.store =
> > -							trip_point_temp_store;
> > -		}
> > -
> > -		device_create_file(&tz->device,
> > -				   &tz->trip_temp_attrs[indx].attr);
> > -
> > -		/* create Optional trip hyst attribute */
> > -		if (!tz->ops->get_trip_hyst)
> > -			continue;
> > -		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
> > -			 "trip_point_%d_hyst", indx);
> > -
> > -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> > -		tz->trip_hyst_attrs[indx].attr.attr.name =
> > -					tz->trip_hyst_attrs[indx].name;
> > -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> > -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> > -		if (tz->ops->set_trip_hyst) {
> > -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> > -			tz->trip_hyst_attrs[indx].attr.store =
> > -					trip_point_hyst_store;
> > -		}
> > -
> > -		device_create_file(&tz->device,
> > -				   &tz->trip_hyst_attrs[indx].attr);
> > -	}
> > -	return 0;
> > -}
> > -
> > -static void remove_trip_attrs(struct thermal_zone_device *tz)
> > -{
> > -	int indx;
> > -
> > -	for (indx = 0; indx < tz->trips; indx++) {
> > -		device_remove_file(&tz->device,
> > -				   &tz->trip_type_attrs[indx].attr);
> > -		device_remove_file(&tz->device,
> > -				   &tz->trip_temp_attrs[indx].attr);
> > -		if (tz->ops->get_trip_hyst)
> > -			device_remove_file(&tz->device,
> > -				  &tz->trip_hyst_attrs[indx].attr);
> > -	}
> > -	kfree(tz->trip_type_attrs);
> > -	kfree(tz->trip_temp_attrs);
> > -	kfree(tz->trip_hyst_attrs);
> > -}
> > -
> > -/**
> > - * thermal_zone_device_register - register a new thermal zone device
> > - * @type:	the thermal zone device type
> > - * @trips:	the number of trip points the thermal zone support
> > - * @mask:	a bit string indicating the writeablility of trip points
> > - * @devdata:	private device data
> > - * @ops:	standard thermal zone device callbacks
> > - * @tzp:	thermal zone platform parameters
> > - * @passive_delay: number of milliseconds to wait between polls when
> > - *		   performing passive cooling
> > - * @polling_delay: number of milliseconds to wait between polls when checking
> > - *		   whether trip points have been crossed (0 for interrupt
> > - *		   driven systems)
> > - *
> > - * thermal_zone_device_unregister() must be called when the device is no
> > - * longer needed. The passive cooling depends on the .get_trend() return value.
> > - */
> > -struct thermal_zone_device *thermal_zone_device_register(const char *type,
> > -	int trips, int mask, void *devdata,
> > -	const struct thermal_zone_device_ops *ops,
> > -	const struct thermal_zone_params *tzp,
> > -	int passive_delay, int polling_delay)
> > -{
> > -	struct thermal_zone_device *tz;
> > -	enum thermal_trip_type trip_type;
> > -	int result;
> > -	int count;
> > -	int passive = 0;
> > -
> > -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (!ops || !ops->get_temp)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	if (trips > 0 && !ops->get_trip_type)
> > -		return ERR_PTR(-EINVAL);
> > -
> > -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> > -	if (!tz)
> > -		return ERR_PTR(-ENOMEM);
> > -
> > -	INIT_LIST_HEAD(&tz->thermal_instances);
> > -	idr_init(&tz->idr);
> > -	mutex_init(&tz->lock);
> > -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> > -	if (result) {
> > -		kfree(tz);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	strcpy(tz->type, type ? : "");
> > -	tz->ops = ops;
> > -	tz->tzp = tzp;
> > -	tz->device.class = &thermal_class;
> > -	tz->devdata = devdata;
> > -	tz->trips = trips;
> > -	tz->passive_delay = passive_delay;
> > -	tz->polling_delay = polling_delay;
> > -
> > -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> > -	result = device_register(&tz->device);
> > -	if (result) {
> > -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > -		kfree(tz);
> > -		return ERR_PTR(result);
> > -	}
> > -
> > -	/* sys I/F */
> > -	if (type) {
> > -		result = device_create_file(&tz->device, &dev_attr_type);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -	result = device_create_file(&tz->device, &dev_attr_temp);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	if (ops->get_mode) {
> > -		result = device_create_file(&tz->device, &dev_attr_mode);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -	result = create_trip_attrs(tz, mask);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	for (count = 0; count < trips; count++) {
> > -		tz->ops->get_trip_type(tz, count, &trip_type);
> > -		if (trip_type == THERMAL_TRIP_PASSIVE)
> > -			passive = 1;
> > -	}
> > -
> > -	if (!passive) {
> > -		result = device_create_file(&tz->device, &dev_attr_passive);
> > -		if (result)
> > -			goto unregister;
> > -	}
> > -
> > -#ifdef CONFIG_THERMAL_EMULATION
> > -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> > -	if (result)
> > -		goto unregister;
> > -#endif
> > -	/* Create policy attribute */
> > -	result = device_create_file(&tz->device, &dev_attr_policy);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	/* Update 'this' zone's governor information */
> > -	mutex_lock(&thermal_governor_lock);
> > -
> > -	if (tz->tzp)
> > -		tz->governor = __find_governor(tz->tzp->governor_name);
> > -	else
> > -		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
> > -
> > -	mutex_unlock(&thermal_governor_lock);
> > -
> > -	result = thermal_add_hwmon_sysfs(tz);
> > -	if (result)
> > -		goto unregister;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_add_tail(&tz->node, &thermal_tz_list);
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	/* Bind cooling devices for this zone */
> > -	bind_tz(tz);
> > -
> > -	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
> > -
> > -	thermal_zone_device_update(tz);
> > -
> > -	if (!result)
> > -		return tz;
> > -
> > -unregister:
> > -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > -	device_unregister(&tz->device);
> > -	return ERR_PTR(result);
> > -}
> > -EXPORT_SYMBOL(thermal_zone_device_register);
> > -
> > -/**
> > - * thermal_device_unregister - removes the registered thermal zone device
> > - * @tz: the thermal zone device to remove
> > - */
> > -void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> > -{
> > -	int i;
> > -	const struct thermal_zone_params *tzp;
> > -	struct thermal_cooling_device *cdev;
> > -	struct thermal_zone_device *pos = NULL;
> > -
> > -	if (!tz)
> > -		return;
> > -
> > -	tzp = tz->tzp;
> > -
> > -	mutex_lock(&thermal_list_lock);
> > -	list_for_each_entry(pos, &thermal_tz_list, node)
> > -	    if (pos == tz)
> > -		break;
> > -	if (pos != tz) {
> > -		/* thermal zone device not found */
> > -		mutex_unlock(&thermal_list_lock);
> > -		return;
> > -	}
> > -	list_del(&tz->node);
> > -
> > -	/* Unbind all cdevs associated with 'this' thermal zone */
> > -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> > -		if (tz->ops->unbind) {
> > -			tz->ops->unbind(tz, cdev);
> > -			continue;
> > -		}
> > -
> > -		if (!tzp || !tzp->tbp)
> > -			break;
> > -
> > -		for (i = 0; i < tzp->num_tbps; i++) {
> > -			if (tzp->tbp[i].cdev == cdev) {
> > -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> > -				tzp->tbp[i].cdev = NULL;
> > -			}
> > -		}
> > -	}
> > -
> > -	mutex_unlock(&thermal_list_lock);
> > -
> > -	thermal_zone_device_set_polling(tz, 0);
> > -
> > -	if (tz->type[0])
> > -		device_remove_file(&tz->device, &dev_attr_type);
> > -	device_remove_file(&tz->device, &dev_attr_temp);
> > -	if (tz->ops->get_mode)
> > -		device_remove_file(&tz->device, &dev_attr_mode);
> > -	device_remove_file(&tz->device, &dev_attr_policy);
> > -	remove_trip_attrs(tz);
> > -	tz->governor = NULL;
> > -
> > -	thermal_remove_hwmon_sysfs(tz);
> > -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> > -	idr_destroy(&tz->idr);
> > -	mutex_destroy(&tz->lock);
> > -	device_unregister(&tz->device);
> > -	return;
> > -}
> > -EXPORT_SYMBOL(thermal_zone_device_unregister);
> > -
> > -#ifdef CONFIG_NET
> > -static struct genl_family thermal_event_genl_family = {
> > -	.id = GENL_ID_GENERATE,
> > -	.name = THERMAL_GENL_FAMILY_NAME,
> > -	.version = THERMAL_GENL_VERSION,
> > -	.maxattr = THERMAL_GENL_ATTR_MAX,
> > -};
> > -
> > -static struct genl_multicast_group thermal_event_mcgrp = {
> > -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> > -};
> > -
> > -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> > -					enum events event)
> > -{
> > -	struct sk_buff *skb;
> > -	struct nlattr *attr;
> > -	struct thermal_genl_event *thermal_event;
> > -	void *msg_header;
> > -	int size;
> > -	int result;
> > -	static unsigned int thermal_event_seqnum;
> > -
> > -	if (!tz)
> > -		return -EINVAL;
> > -
> > -	/* allocate memory */
> > -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> > -	       nla_total_size(0);
> > -
> > -	skb = genlmsg_new(size, GFP_ATOMIC);
> > -	if (!skb)
> > -		return -ENOMEM;
> > -
> > -	/* add the genetlink message header */
> > -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> > -				 &thermal_event_genl_family, 0,
> > -				 THERMAL_GENL_CMD_EVENT);
> > -	if (!msg_header) {
> > -		nlmsg_free(skb);
> > -		return -ENOMEM;
> > -	}
> > -
> > -	/* fill the data */
> > -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> > -			   sizeof(struct thermal_genl_event));
> > -
> > -	if (!attr) {
> > -		nlmsg_free(skb);
> > -		return -EINVAL;
> > -	}
> > -
> > -	thermal_event = nla_data(attr);
> > -	if (!thermal_event) {
> > -		nlmsg_free(skb);
> > -		return -EINVAL;
> > -	}
> > -
> > -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> > -
> > -	thermal_event->orig = tz->id;
> > -	thermal_event->event = event;
> > -
> > -	/* send multicast genetlink message */
> > -	result = genlmsg_end(skb, msg_header);
> > -	if (result < 0) {
> > -		nlmsg_free(skb);
> > -		return result;
> > -	}
> > -
> > -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
> > -	if (result)
> > -		dev_err(&tz->device, "Failed to send netlink event:%d", result);
> > -
> > -	return result;
> > -}
> > -EXPORT_SYMBOL(thermal_generate_netlink_event);
> > -
> > -static int genetlink_init(void)
> > -{
> > -	int result;
> > -
> > -	result = genl_register_family(&thermal_event_genl_family);
> > -	if (result)
> > -		return result;
> > -
> > -	result = genl_register_mc_group(&thermal_event_genl_family,
> > -					&thermal_event_mcgrp);
> > -	if (result)
> > -		genl_unregister_family(&thermal_event_genl_family);
> > -	return result;
> > -}
> > -
> > -static void genetlink_exit(void)
> > -{
> > -	genl_unregister_family(&thermal_event_genl_family);
> > -}
> > -#else /* !CONFIG_NET */
> > -static inline int genetlink_init(void) { return 0; }
> > -static inline void genetlink_exit(void) {}
> > -#endif /* !CONFIG_NET */
> > -
> > -static int __init thermal_init(void)
> > -{
> > -	int result = 0;
> > -
> > -	result = class_register(&thermal_class);
> > -	if (result) {
> > -		idr_destroy(&thermal_tz_idr);
> > -		idr_destroy(&thermal_cdev_idr);
> > -		mutex_destroy(&thermal_idr_lock);
> > -		mutex_destroy(&thermal_list_lock);
> > -		return result;
> > -	}
> > -	result = genetlink_init();
> > -	return result;
> > -}
> > -
> > -static void __exit thermal_exit(void)
> > -{
> > -	class_unregister(&thermal_class);
> > -	idr_destroy(&thermal_tz_idr);
> > -	idr_destroy(&thermal_cdev_idr);
> > -	mutex_destroy(&thermal_idr_lock);
> > -	mutex_destroy(&thermal_list_lock);
> > -	genetlink_exit();
> > -}
> > -
> > -fs_initcall(thermal_init);
> > -module_exit(thermal_exit);
> >
> 

Re: [RFC,1/5] Thermal: rename thermal_sys.c to thermal_core.c

[Eduardo Valentin]

Hey Rui,

On 27-03-2013 22:40, Zhang Rui wrote:
> On Tue, 2013-03-26 at 18:04 -0400, Eduardo Valentin wrote:
>> Hi Rui,
>>
>> A side note:
>> I'd really appreciate if you could copy on your patches on
>> drivers/thermal/. I had some issues with TI server and got un subscribed
>> from linux-pm. Now I will try to catch up any way,
>>
> sure.
>
>> Some comments.
>>
>> On 26-03-2013 12:26, Zhang Rui wrote:
>>> No functional change in this patch.
>>>
>>
>> Just a better description would also help on code version control.
>>
> will add it in V2.
>
>>> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
>>
>> Apart from minor comments, I agreed with this change. So feel free to
>> add my:
>>
>> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
>>
> thanks!
>
>>>
>>> ---
>>> drivers/thermal/Makefile       |    1 +
>>>    drivers/thermal/thermal_core.c | 1888 ++++++++++++++++++++++++++++++++++++++++
>>>    drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
>>
>> When sending renames, use git format-patch --find-renames, it makes a
>> better summary of what you have done, specially if you have changed
>> something in the file while renaming.
>>
> a useful tip. thanks!
>>>    3 files changed, 1889 insertions(+), 1888 deletions(-)
>>>    create mode 100644 drivers/thermal/thermal_core.c
>>>    delete mode 100644 drivers/thermal/thermal_sys.c
>>>
>>> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
>>> index d3a2b38..b2009bd 100644
>>> --- a/drivers/thermal/Makefile
>>> +++ b/drivers/thermal/Makefile
>>> @@ -3,6 +3,7 @@
>>>    #
>>>
>>>    obj-$(CONFIG_THERMAL)		+= thermal_sys.o
>>
>> I know this is for fixing the annoying bug with fan max speed. But while
>> still here, do you think 'thermal_sys' is a good name for thermal
>> framework driver? Maybe just 'thermal' would suffice?
>>
> as I said, there is already a thermal driver, aka,
> driver/acpi/thermal.c.
>

In fact there is. On the other hand, it does not imply that this naming 
convention is correct, right?

Unless you have a strong requirement to name these drivers the way it 
is, I'd suggest to take the opportunity to rename them. 
drivers/acpi/thermal.c could be named 'thermal-acpi.ko', if this does 
not violate any ACPI requirements. While this driver, 
drivers/thermal/thermal_sys.c, would be named only 'thermal.ko'.


> thanks,

Regards,

Ed

> rui
>>> +thermal_sys-y			+= thermal_core.o
>>>
>>>    # governors
>>>    obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
>>> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
>>> new file mode 100644
>>> index 0000000..5b7863a
>>> --- /dev/null
>>> +++ b/drivers/thermal/thermal_core.c
>>> @@ -0,0 +1,1888 @@
>>> +/*
>>> + *  thermal.c - Generic Thermal Management Sysfs support.
>>> + *
>>> + *  Copyright (C) 2008 Intel Corp
>>> + *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
>>> + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
>>> + *
>>> + *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> + *
>>> + *  This program is free software; you can redistribute it and/or modify
>>> + *  it under the terms of the GNU General Public License as published by
>>> + *  the Free Software Foundation; version 2 of the License.
>>> + *
>>> + *  This program is distributed in the hope that it will be useful, but
>>> + *  WITHOUT ANY WARRANTY; without even the implied warranty of
>>> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
>>> + *  General Public License for more details.
>>> + *
>>> + *  You should have received a copy of the GNU General Public License along
>>> + *  with this program; if not, write to the Free Software Foundation, Inc.,
>>> + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
>>> + *
>>> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> + */
>>> +
>>> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>>> +
>>> +#include <linux/module.h>
>>> +#include <linux/device.h>
>>> +#include <linux/err.h>
>>> +#include <linux/slab.h>
>>> +#include <linux/kdev_t.h>
>>> +#include <linux/idr.h>
>>> +#include <linux/thermal.h>
>>> +#include <linux/reboot.h>
>>> +#include <net/netlink.h>
>>> +#include <net/genetlink.h>
>>> +
>>> +#include "thermal_core.h"
>>> +
>>> +MODULE_AUTHOR("Zhang Rui");
>>> +MODULE_DESCRIPTION("Generic thermal management sysfs support");
>>> +MODULE_LICENSE("GPL");
>>> +
>>> +static DEFINE_IDR(thermal_tz_idr);
>>> +static DEFINE_IDR(thermal_cdev_idr);
>>> +static DEFINE_MUTEX(thermal_idr_lock);
>>> +
>>> +static LIST_HEAD(thermal_tz_list);
>>> +static LIST_HEAD(thermal_cdev_list);
>>> +static LIST_HEAD(thermal_governor_list);
>>> +
>>> +static DEFINE_MUTEX(thermal_list_lock);
>>> +static DEFINE_MUTEX(thermal_governor_lock);
>>> +
>>> +static struct thermal_governor *__find_governor(const char *name)
>>> +{
>>> +	struct thermal_governor *pos;
>>> +
>>> +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
>>> +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
>>> +			return pos;
>>> +
>>> +	return NULL;
>>> +}
>>> +
>>> +int thermal_register_governor(struct thermal_governor *governor)
>>> +{
>>> +	int err;
>>> +	const char *name;
>>> +	struct thermal_zone_device *pos;
>>> +
>>> +	if (!governor)
>>> +		return -EINVAL;
>>> +
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	err = -EBUSY;
>>> +	if (__find_governor(governor->name) == NULL) {
>>> +		err = 0;
>>> +		list_add(&governor->governor_list, &thermal_governor_list);
>>> +	}
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> +		if (pos->governor)
>>> +			continue;
>>> +		if (pos->tzp)
>>> +			name = pos->tzp->governor_name;
>>> +		else
>>> +			name = DEFAULT_THERMAL_GOVERNOR;
>>> +		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
>>> +			pos->governor = governor;
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +
>>> +	return err;
>>> +}
>>> +EXPORT_SYMBOL_GPL(thermal_register_governor);
>>> +
>>> +void thermal_unregister_governor(struct thermal_governor *governor)
>>> +{
>>> +	struct thermal_zone_device *pos;
>>> +
>>> +	if (!governor)
>>> +		return;
>>> +
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	if (__find_governor(governor->name) == NULL)
>>> +		goto exit;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> +		if (!strnicmp(pos->governor->name, governor->name,
>>> +						THERMAL_NAME_LENGTH))
>>> +			pos->governor = NULL;
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +	list_del(&governor->governor_list);
>>> +exit:
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +	return;
>>> +}
>>> +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
>>> +
>>> +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
>>> +{
>>> +	int ret;
>>> +
>>> +	if (lock)
>>> +		mutex_lock(lock);
>>> +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
>>> +	if (lock)
>>> +		mutex_unlock(lock);
>>> +	if (unlikely(ret < 0))
>>> +		return ret;
>>> +	*id = ret;
>>> +	return 0;
>>> +}
>>> +
>>> +static void release_idr(struct idr *idr, struct mutex *lock, int id)
>>> +{
>>> +	if (lock)
>>> +		mutex_lock(lock);
>>> +	idr_remove(idr, id);
>>> +	if (lock)
>>> +		mutex_unlock(lock);
>>> +}
>>> +
>>> +int get_tz_trend(struct thermal_zone_device *tz, int trip)
>>> +{
>>> +	enum thermal_trend trend;
>>> +
>>> +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
>>> +		if (tz->temperature > tz->last_temperature)
>>> +			trend = THERMAL_TREND_RAISING;
>>> +		else if (tz->temperature < tz->last_temperature)
>>> +			trend = THERMAL_TREND_DROPPING;
>>> +		else
>>> +			trend = THERMAL_TREND_STABLE;
>>> +	}
>>> +
>>> +	return trend;
>>> +}
>>> +EXPORT_SYMBOL(get_tz_trend);
>>> +
>>> +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
>>> +			struct thermal_cooling_device *cdev, int trip)
>>> +{
>>> +	struct thermal_instance *pos = NULL;
>>> +	struct thermal_instance *target_instance = NULL;
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	mutex_lock(&cdev->lock);
>>> +
>>> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
>>> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> +			target_instance = pos;
>>> +			break;
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&cdev->lock);
>>> +	mutex_unlock(&tz->lock);
>>> +
>>> +	return target_instance;
>>> +}
>>> +EXPORT_SYMBOL(get_thermal_instance);
>>> +
>>> +static void print_bind_err_msg(struct thermal_zone_device *tz,
>>> +			struct thermal_cooling_device *cdev, int ret)
>>> +{
>>> +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
>>> +				tz->type, cdev->type, ret);
>>> +}
>>> +
>>> +static void __bind(struct thermal_zone_device *tz, int mask,
>>> +			struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i, ret;
>>> +
>>> +	for (i = 0; i < tz->trips; i++) {
>>> +		if (mask & (1 << i)) {
>>> +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
>>> +					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
>>> +			if (ret)
>>> +				print_bind_err_msg(tz, cdev, ret);
>>> +		}
>>> +	}
>>> +}
>>> +
>>> +static void __unbind(struct thermal_zone_device *tz, int mask,
>>> +			struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i;
>>> +
>>> +	for (i = 0; i < tz->trips; i++)
>>> +		if (mask & (1 << i))
>>> +			thermal_zone_unbind_cooling_device(tz, i, cdev);
>>> +}
>>> +
>>> +static void bind_cdev(struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i, ret;
>>> +	const struct thermal_zone_params *tzp;
>>> +	struct thermal_zone_device *pos = NULL;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> +		if (!pos->tzp && !pos->ops->bind)
>>> +			continue;
>>> +
>>> +		if (!pos->tzp && pos->ops->bind) {
>>> +			ret = pos->ops->bind(pos, cdev);
>>> +			if (ret)
>>> +				print_bind_err_msg(pos, cdev, ret);
>>> +		}
>>> +
>>> +		tzp = pos->tzp;
>>> +		if (!tzp || !tzp->tbp)
>>> +			continue;
>>> +
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> +				continue;
>>> +			if (tzp->tbp[i].match(pos, cdev))
>>> +				continue;
>>> +			tzp->tbp[i].cdev = cdev;
>>> +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +}
>>> +
>>> +static void bind_tz(struct thermal_zone_device *tz)
>>> +{
>>> +	int i, ret;
>>> +	struct thermal_cooling_device *pos = NULL;
>>> +	const struct thermal_zone_params *tzp = tz->tzp;
>>> +
>>> +	if (!tzp && !tz->ops->bind)
>>> +		return;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	/* If there is no platform data, try to use ops->bind */
>>> +	if (!tzp && tz->ops->bind) {
>>> +		list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> +			ret = tz->ops->bind(tz, pos);
>>> +			if (ret)
>>> +				print_bind_err_msg(tz, pos, ret);
>>> +		}
>>> +		goto exit;
>>> +	}
>>> +
>>> +	if (!tzp || !tzp->tbp)
>>> +		goto exit;
>>> +
>>> +	list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> +				continue;
>>> +			if (tzp->tbp[i].match(tz, pos))
>>> +				continue;
>>> +			tzp->tbp[i].cdev = pos;
>>> +			__bind(tz, tzp->tbp[i].trip_mask, pos);
>>> +		}
>>> +	}
>>> +exit:
>>> +	mutex_unlock(&thermal_list_lock);
>>> +}
>>> +
>>> +static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
>>> +					    int delay)
>>> +{
>>> +	if (delay > 1000)
>>> +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> +				 round_jiffies(msecs_to_jiffies(delay)));
>>> +	else if (delay)
>>> +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> +				 msecs_to_jiffies(delay));
>>> +	else
>>> +		cancel_delayed_work(&tz->poll_queue);
>>> +}
>>> +
>>> +static void monitor_thermal_zone(struct thermal_zone_device *tz)
>>> +{
>>> +	mutex_lock(&tz->lock);
>>> +
>>> +	if (tz->passive)
>>> +		thermal_zone_device_set_polling(tz, tz->passive_delay);
>>> +	else if (tz->polling_delay)
>>> +		thermal_zone_device_set_polling(tz, tz->polling_delay);
>>> +	else
>>> +		thermal_zone_device_set_polling(tz, 0);
>>> +
>>> +	mutex_unlock(&tz->lock);
>>> +}
>>> +
>>> +static void handle_non_critical_trips(struct thermal_zone_device *tz,
>>> +			int trip, enum thermal_trip_type trip_type)
>>> +{
>>> +	if (tz->governor)
>>> +		tz->governor->throttle(tz, trip);
>>> +}
>>> +
>>> +static void handle_critical_trips(struct thermal_zone_device *tz,
>>> +				int trip, enum thermal_trip_type trip_type)
>>> +{
>>> +	long trip_temp;
>>> +
>>> +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
>>> +
>>> +	/* If we have not crossed the trip_temp, we do not care. */
>>> +	if (tz->temperature < trip_temp)
>>> +		return;
>>> +
>>> +	if (tz->ops->notify)
>>> +		tz->ops->notify(tz, trip, trip_type);
>>> +
>>> +	if (trip_type == THERMAL_TRIP_CRITICAL) {
>>> +		dev_emerg(&tz->device,
>>> +			  "critical temperature reached(%d C),shutting down\n",
>>> +			  tz->temperature / 1000);
>>> +		orderly_poweroff(true);
>>> +	}
>>> +}
>>> +
>>> +static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
>>> +{
>>> +	enum thermal_trip_type type;
>>> +
>>> +	tz->ops->get_trip_type(tz, trip, &type);
>>> +
>>> +	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
>>> +		handle_critical_trips(tz, trip, type);
>>> +	else
>>> +		handle_non_critical_trips(tz, trip, type);
>>> +	/*
>>> +	 * Alright, we handled this trip successfully.
>>> +	 * So, start monitoring again.
>>> +	 */
>>> +	monitor_thermal_zone(tz);
>>> +}
>>> +
>>> +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
>>> +				unsigned long *temp)
>>> +{
>>> +	int ret = 0;
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +	int count;
>>> +	unsigned long crit_temp = -1UL;
>>> +	enum thermal_trip_type type;
>>> +#endif
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +
>>> +	ret = tz->ops->get_temp(tz, temp);
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +	if (!tz->emul_temperature)
>>> +		goto skip_emul;
>>> +
>>> +	for (count = 0; count < tz->trips; count++) {
>>> +		ret = tz->ops->get_trip_type(tz, count, &type);
>>> +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
>>> +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
>>> +			break;
>>> +		}
>>> +	}
>>> +
>>> +	if (ret)
>>> +		goto skip_emul;
>>> +
>>> +	if (*temp < crit_temp)
>>> +		*temp = tz->emul_temperature;
>>> +skip_emul:
>>> +#endif
>>> +	mutex_unlock(&tz->lock);
>>> +	return ret;
>>> +}
>>> +
>>> +static void update_temperature(struct thermal_zone_device *tz)
>>> +{
>>> +	long temp;
>>> +	int ret;
>>> +
>>> +	ret = thermal_zone_get_temp(tz, &temp);
>>> +	if (ret) {
>>> +		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
>>> +			 tz->id);
>>> +		return;
>>> +	}
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	tz->last_temperature = tz->temperature;
>>> +	tz->temperature = temp;
>>> +	mutex_unlock(&tz->lock);
>>> +}
>>> +
>>> +void thermal_zone_device_update(struct thermal_zone_device *tz)
>>> +{
>>> +	int count;
>>> +
>>> +	update_temperature(tz);
>>> +
>>> +	for (count = 0; count < tz->trips; count++)
>>> +		handle_thermal_trip(tz, count);
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_device_update);
>>> +
>>> +static void thermal_zone_device_check(struct work_struct *work)
>>> +{
>>> +	struct thermal_zone_device *tz = container_of(work, struct
>>> +						      thermal_zone_device,
>>> +						      poll_queue.work);
>>> +	thermal_zone_device_update(tz);
>>> +}
>>> +
>>> +/* sys I/F for thermal zone */
>>> +
>>> +#define to_thermal_zone(_dev) \
>>> +	container_of(_dev, struct thermal_zone_device, device)
>>> +
>>> +static ssize_t
>>> +type_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +
>>> +	return sprintf(buf, "%s\n", tz->type);
>>> +}
>>> +
>>> +static ssize_t
>>> +temp_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	long temperature;
>>> +	int ret;
>>> +
>>> +	ret = thermal_zone_get_temp(tz, &temperature);
>>> +
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +mode_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	enum thermal_device_mode mode;
>>> +	int result;
>>> +
>>> +	if (!tz->ops->get_mode)
>>> +		return -EPERM;
>>> +
>>> +	result = tz->ops->get_mode(tz, &mode);
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
>>> +		       : "disabled");
>>> +}
>>> +
>>> +static ssize_t
>>> +mode_store(struct device *dev, struct device_attribute *attr,
>>> +	   const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int result;
>>> +
>>> +	if (!tz->ops->set_mode)
>>> +		return -EPERM;
>>> +
>>> +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
>>> +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
>>> +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
>>> +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
>>> +	else
>>> +		result = -EINVAL;
>>> +
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	return count;
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_type_show(struct device *dev, struct device_attribute *attr,
>>> +		     char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	enum thermal_trip_type type;
>>> +	int trip, result;
>>> +
>>> +	if (!tz->ops->get_trip_type)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	result = tz->ops->get_trip_type(tz, trip, &type);
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	switch (type) {
>>> +	case THERMAL_TRIP_CRITICAL:
>>> +		return sprintf(buf, "critical\n");
>>> +	case THERMAL_TRIP_HOT:
>>> +		return sprintf(buf, "hot\n");
>>> +	case THERMAL_TRIP_PASSIVE:
>>> +		return sprintf(buf, "passive\n");
>>> +	case THERMAL_TRIP_ACTIVE:
>>> +		return sprintf(buf, "active\n");
>>> +	default:
>>> +		return sprintf(buf, "unknown\n");
>>> +	}
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_temp_store(struct device *dev, struct device_attribute *attr,
>>> +		     const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	unsigned long temperature;
>>> +
>>> +	if (!tz->ops->set_trip_temp)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	if (kstrtoul(buf, 10, &temperature))
>>> +		return -EINVAL;
>>> +
>>> +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
>>> +
>>> +	return ret ? ret : count;
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_temp_show(struct device *dev, struct device_attribute *attr,
>>> +		     char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	long temperature;
>>> +
>>> +	if (!tz->ops->get_trip_temp)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
>>> +
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
>>> +			const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	unsigned long temperature;
>>> +
>>> +	if (!tz->ops->set_trip_hyst)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	if (kstrtoul(buf, 10, &temperature))
>>> +		return -EINVAL;
>>> +
>>> +	/*
>>> +	 * We are not doing any check on the 'temperature' value
>>> +	 * here. The driver implementing 'set_trip_hyst' has to
>>> +	 * take care of this.
>>> +	 */
>>> +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
>>> +
>>> +	return ret ? ret : count;
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
>>> +			char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	unsigned long temperature;
>>> +
>>> +	if (!tz->ops->get_trip_hyst)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
>>> +
>>> +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +passive_store(struct device *dev, struct device_attribute *attr,
>>> +		    const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	struct thermal_cooling_device *cdev = NULL;
>>> +	int state;
>>> +
>>> +	if (!sscanf(buf, "%d\n", &state))
>>> +		return -EINVAL;
>>> +
>>> +	/* sanity check: values below 1000 millicelcius don't make sense
>>> +	 * and can cause the system to go into a thermal heart attack
>>> +	 */
>>> +	if (state && state < 1000)
>>> +		return -EINVAL;
>>> +
>>> +	if (state && !tz->forced_passive) {
>>> +		mutex_lock(&thermal_list_lock);
>>> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> +			if (!strncmp("Processor", cdev->type,
>>> +				     sizeof("Processor")))
>>> +				thermal_zone_bind_cooling_device(tz,
>>> +						THERMAL_TRIPS_NONE, cdev,
>>> +						THERMAL_NO_LIMIT,
>>> +						THERMAL_NO_LIMIT);
>>> +		}
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		if (!tz->passive_delay)
>>> +			tz->passive_delay = 1000;
>>> +	} else if (!state && tz->forced_passive) {
>>> +		mutex_lock(&thermal_list_lock);
>>> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> +			if (!strncmp("Processor", cdev->type,
>>> +				     sizeof("Processor")))
>>> +				thermal_zone_unbind_cooling_device(tz,
>>> +								   THERMAL_TRIPS_NONE,
>>> +								   cdev);
>>> +		}
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		tz->passive_delay = 0;
>>> +	}
>>> +
>>> +	tz->forced_passive = state;
>>> +
>>> +	thermal_zone_device_update(tz);
>>> +
>>> +	return count;
>>> +}
>>> +
>>> +static ssize_t
>>> +passive_show(struct device *dev, struct device_attribute *attr,
>>> +		   char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +
>>> +	return sprintf(buf, "%d\n", tz->forced_passive);
>>> +}
>>> +
>>> +static ssize_t
>>> +policy_store(struct device *dev, struct device_attribute *attr,
>>> +		    const char *buf, size_t count)
>>> +{
>>> +	int ret = -EINVAL;
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	struct thermal_governor *gov;
>>> +
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	gov = __find_governor(buf);
>>> +	if (!gov)
>>> +		goto exit;
>>> +
>>> +	tz->governor = gov;
>>> +	ret = count;
>>> +
>>> +exit:
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +	return ret;
>>> +}
>>> +
>>> +static ssize_t
>>> +policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +
>>> +	return sprintf(buf, "%s\n", tz->governor->name);
>>> +}
>>> +
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +static ssize_t
>>> +emul_temp_store(struct device *dev, struct device_attribute *attr,
>>> +		     const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int ret = 0;
>>> +	unsigned long temperature;
>>> +
>>> +	if (kstrtoul(buf, 10, &temperature))
>>> +		return -EINVAL;
>>> +
>>> +	if (!tz->ops->set_emul_temp) {
>>> +		mutex_lock(&tz->lock);
>>> +		tz->emul_temperature = temperature;
>>> +		mutex_unlock(&tz->lock);
>>> +	} else {
>>> +		ret = tz->ops->set_emul_temp(tz, temperature);
>>> +	}
>>> +
>>> +	return ret ? ret : count;
>>> +}
>>> +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
>>> +#endif/*CONFIG_THERMAL_EMULATION*/
>>> +
>>> +static DEVICE_ATTR(type, 0444, type_show, NULL);
>>> +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
>>> +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
>>> +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
>>> +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
>>> +
>>> +/* sys I/F for cooling device */
>>> +#define to_cooling_device(_dev)	\
>>> +	container_of(_dev, struct thermal_cooling_device, device)
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_type_show(struct device *dev,
>>> +				 struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +
>>> +	return sprintf(buf, "%s\n", cdev->type);
>>> +}
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_max_state_show(struct device *dev,
>>> +				      struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +	unsigned long state;
>>> +	int ret;
>>> +
>>> +	ret = cdev->ops->get_max_state(cdev, &state);
>>> +	if (ret)
>>> +		return ret;
>>> +	return sprintf(buf, "%ld\n", state);
>>> +}
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_cur_state_show(struct device *dev,
>>> +				      struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +	unsigned long state;
>>> +	int ret;
>>> +
>>> +	ret = cdev->ops->get_cur_state(cdev, &state);
>>> +	if (ret)
>>> +		return ret;
>>> +	return sprintf(buf, "%ld\n", state);
>>> +}
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_cur_state_store(struct device *dev,
>>> +				       struct device_attribute *attr,
>>> +				       const char *buf, size_t count)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +	unsigned long state;
>>> +	int result;
>>> +
>>> +	if (!sscanf(buf, "%ld\n", &state))
>>> +		return -EINVAL;
>>> +
>>> +	if ((long)state < 0)
>>> +		return -EINVAL;
>>> +
>>> +	result = cdev->ops->set_cur_state(cdev, state);
>>> +	if (result)
>>> +		return result;
>>> +	return count;
>>> +}
>>> +
>>> +static struct device_attribute dev_attr_cdev_type =
>>> +__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
>>> +static DEVICE_ATTR(max_state, 0444,
>>> +		   thermal_cooling_device_max_state_show, NULL);
>>> +static DEVICE_ATTR(cur_state, 0644,
>>> +		   thermal_cooling_device_cur_state_show,
>>> +		   thermal_cooling_device_cur_state_store);
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_trip_point_show(struct device *dev,
>>> +				       struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_instance *instance;
>>> +
>>> +	instance =
>>> +	    container_of(attr, struct thermal_instance, attr);
>>> +
>>> +	if (instance->trip == THERMAL_TRIPS_NONE)
>>> +		return sprintf(buf, "-1\n");
>>> +	else
>>> +		return sprintf(buf, "%d\n", instance->trip);
>>> +}
>>> +
>>> +/* Device management */
>>> +
>>> +#if defined(CONFIG_THERMAL_HWMON)
>>> +
>>> +/* hwmon sys I/F */
>>> +#include <linux/hwmon.h>
>>> +
>>> +/* thermal zone devices with the same type share one hwmon device */
>>> +struct thermal_hwmon_device {
>>> +	char type[THERMAL_NAME_LENGTH];
>>> +	struct device *device;
>>> +	int count;
>>> +	struct list_head tz_list;
>>> +	struct list_head node;
>>> +};
>>> +
>>> +struct thermal_hwmon_attr {
>>> +	struct device_attribute attr;
>>> +	char name[16];
>>> +};
>>> +
>>> +/* one temperature input for each thermal zone */
>>> +struct thermal_hwmon_temp {
>>> +	struct list_head hwmon_node;
>>> +	struct thermal_zone_device *tz;
>>> +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
>>> +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
>>> +};
>>> +
>>> +static LIST_HEAD(thermal_hwmon_list);
>>> +
>>> +static ssize_t
>>> +name_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
>>> +	return sprintf(buf, "%s\n", hwmon->type);
>>> +}
>>> +static DEVICE_ATTR(name, 0444, name_show, NULL);
>>> +
>>> +static ssize_t
>>> +temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	long temperature;
>>> +	int ret;
>>> +	struct thermal_hwmon_attr *hwmon_attr
>>> +			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> +	struct thermal_hwmon_temp *temp
>>> +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> +				       temp_input);
>>> +	struct thermal_zone_device *tz = temp->tz;
>>> +
>>> +	ret = thermal_zone_get_temp(tz, &temperature);
>>> +
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +temp_crit_show(struct device *dev, struct device_attribute *attr,
>>> +		char *buf)
>>> +{
>>> +	struct thermal_hwmon_attr *hwmon_attr
>>> +			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> +	struct thermal_hwmon_temp *temp
>>> +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> +				       temp_crit);
>>> +	struct thermal_zone_device *tz = temp->tz;
>>> +	long temperature;
>>> +	int ret;
>>> +
>>> +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +
>>> +static struct thermal_hwmon_device *
>>> +thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
>>> +		if (!strcmp(hwmon->type, tz->type)) {
>>> +			mutex_unlock(&thermal_list_lock);
>>> +			return hwmon;
>>> +		}
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	return NULL;
>>> +}
>>> +
>>> +/* Find the temperature input matching a given thermal zone */
>>> +static struct thermal_hwmon_temp *
>>> +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
>>> +			  const struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_temp *temp;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
>>> +		if (temp->tz == tz) {
>>> +			mutex_unlock(&thermal_list_lock);
>>> +			return temp;
>>> +		}
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	return NULL;
>>> +}
>>> +
>>> +static int
>>> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon;
>>> +	struct thermal_hwmon_temp *temp;
>>> +	int new_hwmon_device = 1;
>>> +	int result;
>>> +
>>> +	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> +	if (hwmon) {
>>> +		new_hwmon_device = 0;
>>> +		goto register_sys_interface;
>>> +	}
>>> +
>>> +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
>>> +	if (!hwmon)
>>> +		return -ENOMEM;
>>> +
>>> +	INIT_LIST_HEAD(&hwmon->tz_list);
>>> +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
>>> +	hwmon->device = hwmon_device_register(NULL);
>>> +	if (IS_ERR(hwmon->device)) {
>>> +		result = PTR_ERR(hwmon->device);
>>> +		goto free_mem;
>>> +	}
>>> +	dev_set_drvdata(hwmon->device, hwmon);
>>> +	result = device_create_file(hwmon->device, &dev_attr_name);
>>> +	if (result)
>>> +		goto free_mem;
>>> +
>>> + register_sys_interface:
>>> +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
>>> +	if (!temp) {
>>> +		result = -ENOMEM;
>>> +		goto unregister_name;
>>> +	}
>>> +
>>> +	temp->tz = tz;
>>> +	hwmon->count++;
>>> +
>>> +	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
>>> +		 "temp%d_input", hwmon->count);
>>> +	temp->temp_input.attr.attr.name = temp->temp_input.name;
>>> +	temp->temp_input.attr.attr.mode = 0444;
>>> +	temp->temp_input.attr.show = temp_input_show;
>>> +	sysfs_attr_init(&temp->temp_input.attr.attr);
>>> +	result = device_create_file(hwmon->device, &temp->temp_input.attr);
>>> +	if (result)
>>> +		goto free_temp_mem;
>>> +
>>> +	if (tz->ops->get_crit_temp) {
>>> +		unsigned long temperature;
>>> +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
>>> +			snprintf(temp->temp_crit.name,
>>> +				 sizeof(temp->temp_crit.name),
>>> +				"temp%d_crit", hwmon->count);
>>> +			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
>>> +			temp->temp_crit.attr.attr.mode = 0444;
>>> +			temp->temp_crit.attr.show = temp_crit_show;
>>> +			sysfs_attr_init(&temp->temp_crit.attr.attr);
>>> +			result = device_create_file(hwmon->device,
>>> +						    &temp->temp_crit.attr);
>>> +			if (result)
>>> +				goto unregister_input;
>>> +		}
>>> +	}
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	if (new_hwmon_device)
>>> +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
>>> +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	return 0;
>>> +
>>> + unregister_input:
>>> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> + free_temp_mem:
>>> +	kfree(temp);
>>> + unregister_name:
>>> +	if (new_hwmon_device) {
>>> +		device_remove_file(hwmon->device, &dev_attr_name);
>>> +		hwmon_device_unregister(hwmon->device);
>>> +	}
>>> + free_mem:
>>> +	if (new_hwmon_device)
>>> +		kfree(hwmon);
>>> +
>>> +	return result;
>>> +}
>>> +
>>> +static void
>>> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon;
>>> +	struct thermal_hwmon_temp *temp;
>>> +
>>> +	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> +	if (unlikely(!hwmon)) {
>>> +		/* Should never happen... */
>>> +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
>>> +		return;
>>> +	}
>>> +
>>> +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
>>> +	if (unlikely(!temp)) {
>>> +		/* Should never happen... */
>>> +		dev_dbg(&tz->device, "temperature input lookup failed!\n");
>>> +		return;
>>> +	}
>>> +
>>> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> +	if (tz->ops->get_crit_temp)
>>> +		device_remove_file(hwmon->device, &temp->temp_crit.attr);
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_del(&temp->hwmon_node);
>>> +	kfree(temp);
>>> +	if (!list_empty(&hwmon->tz_list)) {
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		return;
>>> +	}
>>> +	list_del(&hwmon->node);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	device_remove_file(hwmon->device, &dev_attr_name);
>>> +	hwmon_device_unregister(hwmon->device);
>>> +	kfree(hwmon);
>>> +}
>>> +#else
>>> +static int
>>> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +	return 0;
>>> +}
>>> +
>>> +static void
>>> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +}
>>> +#endif
>>> +
>>> +/**
>>> + * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
>>> + * @tz:		thermal zone device
>>> + * @trip:	indicates which trip point the cooling devices is
>>> + *		associated with in this thermal zone.
>>> + * @cdev:	thermal cooling device
>>> + *
>>> + * This function is usually called in the thermal zone device .bind callback.
>>> + */
>>> +int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
>>> +				     int trip,
>>> +				     struct thermal_cooling_device *cdev,
>>> +				     unsigned long upper, unsigned long lower)
>>> +{
>>> +	struct thermal_instance *dev;
>>> +	struct thermal_instance *pos;
>>> +	struct thermal_zone_device *pos1;
>>> +	struct thermal_cooling_device *pos2;
>>> +	unsigned long max_state;
>>> +	int result;
>>> +
>>> +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
>>> +		return -EINVAL;
>>> +
>>> +	list_for_each_entry(pos1, &thermal_tz_list, node) {
>>> +		if (pos1 == tz)
>>> +			break;
>>> +	}
>>> +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
>>> +		if (pos2 == cdev)
>>> +			break;
>>> +	}
>>> +
>>> +	if (tz != pos1 || cdev != pos2)
>>> +		return -EINVAL;
>>> +
>>> +	cdev->ops->get_max_state(cdev, &max_state);
>>> +
>>> +	/* lower default 0, upper default max_state */
>>> +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
>>> +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
>>> +
>>> +	if (lower > upper || upper > max_state)
>>> +		return -EINVAL;
>>> +
>>> +	dev =
>>> +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
>>> +	if (!dev)
>>> +		return -ENOMEM;
>>> +	dev->tz = tz;
>>> +	dev->cdev = cdev;
>>> +	dev->trip = trip;
>>> +	dev->upper = upper;
>>> +	dev->lower = lower;
>>> +	dev->target = THERMAL_NO_TARGET;
>>> +
>>> +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
>>> +	if (result)
>>> +		goto free_mem;
>>> +
>>> +	sprintf(dev->name, "cdev%d", dev->id);
>>> +	result =
>>> +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
>>> +	if (result)
>>> +		goto release_idr;
>>> +
>>> +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
>>> +	sysfs_attr_init(&dev->attr.attr);
>>> +	dev->attr.attr.name = dev->attr_name;
>>> +	dev->attr.attr.mode = 0444;
>>> +	dev->attr.show = thermal_cooling_device_trip_point_show;
>>> +	result = device_create_file(&tz->device, &dev->attr);
>>> +	if (result)
>>> +		goto remove_symbol_link;
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	mutex_lock(&cdev->lock);
>>> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
>>> +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> +		result = -EEXIST;
>>> +		break;
>>> +	}
>>> +	if (!result) {
>>> +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
>>> +		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
>>> +	}
>>> +	mutex_unlock(&cdev->lock);
>>> +	mutex_unlock(&tz->lock);
>>> +
>>> +	if (!result)
>>> +		return 0;
>>> +
>>> +	device_remove_file(&tz->device, &dev->attr);
>>> +remove_symbol_link:
>>> +	sysfs_remove_link(&tz->device.kobj, dev->name);
>>> +release_idr:
>>> +	release_idr(&tz->idr, &tz->lock, dev->id);
>>> +free_mem:
>>> +	kfree(dev);
>>> +	return result;
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
>>> +
>>> +/**
>>> + * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
>>> + * @tz:		thermal zone device
>>> + * @trip:	indicates which trip point the cooling devices is
>>> + *		associated with in this thermal zone.
>>> + * @cdev:	thermal cooling device
>>> + *
>>> + * This function is usually called in the thermal zone device .unbind callback.
>>> + */
>>> +int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
>>> +				       int trip,
>>> +				       struct thermal_cooling_device *cdev)
>>> +{
>>> +	struct thermal_instance *pos, *next;
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	mutex_lock(&cdev->lock);
>>> +	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
>>> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> +			list_del(&pos->tz_node);
>>> +			list_del(&pos->cdev_node);
>>> +			mutex_unlock(&cdev->lock);
>>> +			mutex_unlock(&tz->lock);
>>> +			goto unbind;
>>> +		}
>>> +	}
>>> +	mutex_unlock(&cdev->lock);
>>> +	mutex_unlock(&tz->lock);
>>> +
>>> +	return -ENODEV;
>>> +
>>> +unbind:
>>> +	device_remove_file(&tz->device, &pos->attr);
>>> +	sysfs_remove_link(&tz->device.kobj, pos->name);
>>> +	release_idr(&tz->idr, &tz->lock, pos->id);
>>> +	kfree(pos);
>>> +	return 0;
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
>>> +
>>> +static void thermal_release(struct device *dev)
>>> +{
>>> +	struct thermal_zone_device *tz;
>>> +	struct thermal_cooling_device *cdev;
>>> +
>>> +	if (!strncmp(dev_name(dev), "thermal_zone",
>>> +		     sizeof("thermal_zone") - 1)) {
>>> +		tz = to_thermal_zone(dev);
>>> +		kfree(tz);
>>> +	} else {
>>> +		cdev = to_cooling_device(dev);
>>> +		kfree(cdev);
>>> +	}
>>> +}
>>> +
>>> +static struct class thermal_class = {
>>> +	.name = "thermal",
>>> +	.dev_release = thermal_release,
>>> +};
>>> +
>>> +/**
>>> + * thermal_cooling_device_register - register a new thermal cooling device
>>> + * @type:	the thermal cooling device type.
>>> + * @devdata:	device private data.
>>> + * @ops:		standard thermal cooling devices callbacks.
>>> + */
>>> +struct thermal_cooling_device *
>>> +thermal_cooling_device_register(char *type, void *devdata,
>>> +				const struct thermal_cooling_device_ops *ops)
>>> +{
>>> +	struct thermal_cooling_device *cdev;
>>> +	int result;
>>> +
>>> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
>>> +	    !ops->set_cur_state)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
>>> +	if (!cdev)
>>> +		return ERR_PTR(-ENOMEM);
>>> +
>>> +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
>>> +	if (result) {
>>> +		kfree(cdev);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	strcpy(cdev->type, type ? : "");
>>> +	mutex_init(&cdev->lock);
>>> +	INIT_LIST_HEAD(&cdev->thermal_instances);
>>> +	cdev->ops = ops;
>>> +	cdev->updated = true;
>>> +	cdev->device.class = &thermal_class;
>>> +	cdev->devdata = devdata;
>>> +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
>>> +	result = device_register(&cdev->device);
>>> +	if (result) {
>>> +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> +		kfree(cdev);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	/* sys I/F */
>>> +	if (type) {
>>> +		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +	result = device_create_file(&cdev->device, &dev_attr_max_state);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	/* Add 'this' new cdev to the global cdev list */
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_add(&cdev->node, &thermal_cdev_list);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	/* Update binding information for 'this' new cdev */
>>> +	bind_cdev(cdev);
>>> +
>>> +	return cdev;
>>> +
>>> +unregister:
>>> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> +	device_unregister(&cdev->device);
>>> +	return ERR_PTR(result);
>>> +}
>>> +EXPORT_SYMBOL(thermal_cooling_device_register);
>>> +
>>> +/**
>>> + * thermal_cooling_device_unregister - removes the registered thermal cooling device
>>> + * @cdev:	the thermal cooling device to remove.
>>> + *
>>> + * thermal_cooling_device_unregister() must be called when the device is no
>>> + * longer needed.
>>> + */
>>> +void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i;
>>> +	const struct thermal_zone_params *tzp;
>>> +	struct thermal_zone_device *tz;
>>> +	struct thermal_cooling_device *pos = NULL;
>>> +
>>> +	if (!cdev)
>>> +		return;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(pos, &thermal_cdev_list, node)
>>> +	    if (pos == cdev)
>>> +		break;
>>> +	if (pos != cdev) {
>>> +		/* thermal cooling device not found */
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		return;
>>> +	}
>>> +	list_del(&cdev->node);
>>> +
>>> +	/* Unbind all thermal zones associated with 'this' cdev */
>>> +	list_for_each_entry(tz, &thermal_tz_list, node) {
>>> +		if (tz->ops->unbind) {
>>> +			tz->ops->unbind(tz, cdev);
>>> +			continue;
>>> +		}
>>> +
>>> +		if (!tz->tzp || !tz->tzp->tbp)
>>> +			continue;
>>> +
>>> +		tzp = tz->tzp;
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev == cdev) {
>>> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> +				tzp->tbp[i].cdev = NULL;
>>> +			}
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	if (cdev->type[0])
>>> +		device_remove_file(&cdev->device, &dev_attr_cdev_type);
>>> +	device_remove_file(&cdev->device, &dev_attr_max_state);
>>> +	device_remove_file(&cdev->device, &dev_attr_cur_state);
>>> +
>>> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> +	device_unregister(&cdev->device);
>>> +	return;
>>> +}
>>> +EXPORT_SYMBOL(thermal_cooling_device_unregister);
>>> +
>>> +void thermal_cdev_update(struct thermal_cooling_device *cdev)
>>> +{
>>> +	struct thermal_instance *instance;
>>> +	unsigned long target = 0;
>>> +
>>> +	/* cooling device is updated*/
>>> +	if (cdev->updated)
>>> +		return;
>>> +
>>> +	mutex_lock(&cdev->lock);
>>> +	/* Make sure cdev enters the deepest cooling state */
>>> +	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
>>> +		if (instance->target == THERMAL_NO_TARGET)
>>> +			continue;
>>> +		if (instance->target > target)
>>> +			target = instance->target;
>>> +	}
>>> +	mutex_unlock(&cdev->lock);
>>> +	cdev->ops->set_cur_state(cdev, target);
>>> +	cdev->updated = true;
>>> +}
>>> +EXPORT_SYMBOL(thermal_cdev_update);
>>> +
>>> +/**
>>> + * notify_thermal_framework - Sensor drivers use this API to notify framework
>>> + * @tz:		thermal zone device
>>> + * @trip:	indicates which trip point has been crossed
>>> + *
>>> + * This function handles the trip events from sensor drivers. It starts
>>> + * throttling the cooling devices according to the policy configured.
>>> + * For CRITICAL and HOT trip points, this notifies the respective drivers,
>>> + * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
>>> + * The throttling policy is based on the configured platform data; if no
>>> + * platform data is provided, this uses the step_wise throttling policy.
>>> + */
>>> +void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
>>> +{
>>> +	handle_thermal_trip(tz, trip);
>>> +}
>>> +EXPORT_SYMBOL(notify_thermal_framework);
>>> +
>>> +/**
>>> + * create_trip_attrs - create attributes for trip points
>>> + * @tz:		the thermal zone device
>>> + * @mask:	Writeable trip point bitmap.
>>> + */
>>> +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
>>> +{
>>> +	int indx;
>>> +	int size = sizeof(struct thermal_attr) * tz->trips;
>>> +
>>> +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
>>> +	if (!tz->trip_type_attrs)
>>> +		return -ENOMEM;
>>> +
>>> +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
>>> +	if (!tz->trip_temp_attrs) {
>>> +		kfree(tz->trip_type_attrs);
>>> +		return -ENOMEM;
>>> +	}
>>> +
>>> +	if (tz->ops->get_trip_hyst) {
>>> +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
>>> +		if (!tz->trip_hyst_attrs) {
>>> +			kfree(tz->trip_type_attrs);
>>> +			kfree(tz->trip_temp_attrs);
>>> +			return -ENOMEM;
>>> +		}
>>> +	}
>>> +
>>> +
>>> +	for (indx = 0; indx < tz->trips; indx++) {
>>> +		/* create trip type attribute */
>>> +		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> +			 "trip_point_%d_type", indx);
>>> +
>>> +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
>>> +		tz->trip_type_attrs[indx].attr.attr.name =
>>> +						tz->trip_type_attrs[indx].name;
>>> +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
>>> +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
>>> +
>>> +		device_create_file(&tz->device,
>>> +				   &tz->trip_type_attrs[indx].attr);
>>> +
>>> +		/* create trip temp attribute */
>>> +		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> +			 "trip_point_%d_temp", indx);
>>> +
>>> +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
>>> +		tz->trip_temp_attrs[indx].attr.attr.name =
>>> +						tz->trip_temp_attrs[indx].name;
>>> +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
>>> +		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
>>> +		if (mask & (1 << indx)) {
>>> +			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> +			tz->trip_temp_attrs[indx].attr.store =
>>> +							trip_point_temp_store;
>>> +		}
>>> +
>>> +		device_create_file(&tz->device,
>>> +				   &tz->trip_temp_attrs[indx].attr);
>>> +
>>> +		/* create Optional trip hyst attribute */
>>> +		if (!tz->ops->get_trip_hyst)
>>> +			continue;
>>> +		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> +			 "trip_point_%d_hyst", indx);
>>> +
>>> +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
>>> +		tz->trip_hyst_attrs[indx].attr.attr.name =
>>> +					tz->trip_hyst_attrs[indx].name;
>>> +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
>>> +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
>>> +		if (tz->ops->set_trip_hyst) {
>>> +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> +			tz->trip_hyst_attrs[indx].attr.store =
>>> +					trip_point_hyst_store;
>>> +		}
>>> +
>>> +		device_create_file(&tz->device,
>>> +				   &tz->trip_hyst_attrs[indx].attr);
>>> +	}
>>> +	return 0;
>>> +}
>>> +
>>> +static void remove_trip_attrs(struct thermal_zone_device *tz)
>>> +{
>>> +	int indx;
>>> +
>>> +	for (indx = 0; indx < tz->trips; indx++) {
>>> +		device_remove_file(&tz->device,
>>> +				   &tz->trip_type_attrs[indx].attr);
>>> +		device_remove_file(&tz->device,
>>> +				   &tz->trip_temp_attrs[indx].attr);
>>> +		if (tz->ops->get_trip_hyst)
>>> +			device_remove_file(&tz->device,
>>> +				  &tz->trip_hyst_attrs[indx].attr);
>>> +	}
>>> +	kfree(tz->trip_type_attrs);
>>> +	kfree(tz->trip_temp_attrs);
>>> +	kfree(tz->trip_hyst_attrs);
>>> +}
>>> +
>>> +/**
>>> + * thermal_zone_device_register - register a new thermal zone device
>>> + * @type:	the thermal zone device type
>>> + * @trips:	the number of trip points the thermal zone support
>>> + * @mask:	a bit string indicating the writeablility of trip points
>>> + * @devdata:	private device data
>>> + * @ops:	standard thermal zone device callbacks
>>> + * @tzp:	thermal zone platform parameters
>>> + * @passive_delay: number of milliseconds to wait between polls when
>>> + *		   performing passive cooling
>>> + * @polling_delay: number of milliseconds to wait between polls when checking
>>> + *		   whether trip points have been crossed (0 for interrupt
>>> + *		   driven systems)
>>> + *
>>> + * thermal_zone_device_unregister() must be called when the device is no
>>> + * longer needed. The passive cooling depends on the .get_trend() return value.
>>> + */
>>> +struct thermal_zone_device *thermal_zone_device_register(const char *type,
>>> +	int trips, int mask, void *devdata,
>>> +	const struct thermal_zone_device_ops *ops,
>>> +	const struct thermal_zone_params *tzp,
>>> +	int passive_delay, int polling_delay)
>>> +{
>>> +	struct thermal_zone_device *tz;
>>> +	enum thermal_trip_type trip_type;
>>> +	int result;
>>> +	int count;
>>> +	int passive = 0;
>>> +
>>> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (!ops || !ops->get_temp)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (trips > 0 && !ops->get_trip_type)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
>>> +	if (!tz)
>>> +		return ERR_PTR(-ENOMEM);
>>> +
>>> +	INIT_LIST_HEAD(&tz->thermal_instances);
>>> +	idr_init(&tz->idr);
>>> +	mutex_init(&tz->lock);
>>> +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
>>> +	if (result) {
>>> +		kfree(tz);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	strcpy(tz->type, type ? : "");
>>> +	tz->ops = ops;
>>> +	tz->tzp = tzp;
>>> +	tz->device.class = &thermal_class;
>>> +	tz->devdata = devdata;
>>> +	tz->trips = trips;
>>> +	tz->passive_delay = passive_delay;
>>> +	tz->polling_delay = polling_delay;
>>> +
>>> +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
>>> +	result = device_register(&tz->device);
>>> +	if (result) {
>>> +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> +		kfree(tz);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	/* sys I/F */
>>> +	if (type) {
>>> +		result = device_create_file(&tz->device, &dev_attr_type);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +	result = device_create_file(&tz->device, &dev_attr_temp);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	if (ops->get_mode) {
>>> +		result = device_create_file(&tz->device, &dev_attr_mode);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +	result = create_trip_attrs(tz, mask);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	for (count = 0; count < trips; count++) {
>>> +		tz->ops->get_trip_type(tz, count, &trip_type);
>>> +		if (trip_type == THERMAL_TRIP_PASSIVE)
>>> +			passive = 1;
>>> +	}
>>> +
>>> +	if (!passive) {
>>> +		result = device_create_file(&tz->device, &dev_attr_passive);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
>>> +	if (result)
>>> +		goto unregister;
>>> +#endif
>>> +	/* Create policy attribute */
>>> +	result = device_create_file(&tz->device, &dev_attr_policy);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	/* Update 'this' zone's governor information */
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	if (tz->tzp)
>>> +		tz->governor = __find_governor(tz->tzp->governor_name);
>>> +	else
>>> +		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
>>> +
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +
>>> +	result = thermal_add_hwmon_sysfs(tz);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_add_tail(&tz->node, &thermal_tz_list);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	/* Bind cooling devices for this zone */
>>> +	bind_tz(tz);
>>> +
>>> +	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
>>> +
>>> +	thermal_zone_device_update(tz);
>>> +
>>> +	if (!result)
>>> +		return tz;
>>> +
>>> +unregister:
>>> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> +	device_unregister(&tz->device);
>>> +	return ERR_PTR(result);
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_device_register);
>>> +
>>> +/**
>>> + * thermal_device_unregister - removes the registered thermal zone device
>>> + * @tz: the thermal zone device to remove
>>> + */
>>> +void thermal_zone_device_unregister(struct thermal_zone_device *tz)
>>> +{
>>> +	int i;
>>> +	const struct thermal_zone_params *tzp;
>>> +	struct thermal_cooling_device *cdev;
>>> +	struct thermal_zone_device *pos = NULL;
>>> +
>>> +	if (!tz)
>>> +		return;
>>> +
>>> +	tzp = tz->tzp;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(pos, &thermal_tz_list, node)
>>> +	    if (pos == tz)
>>> +		break;
>>> +	if (pos != tz) {
>>> +		/* thermal zone device not found */
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		return;
>>> +	}
>>> +	list_del(&tz->node);
>>> +
>>> +	/* Unbind all cdevs associated with 'this' thermal zone */
>>> +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> +		if (tz->ops->unbind) {
>>> +			tz->ops->unbind(tz, cdev);
>>> +			continue;
>>> +		}
>>> +
>>> +		if (!tzp || !tzp->tbp)
>>> +			break;
>>> +
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev == cdev) {
>>> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> +				tzp->tbp[i].cdev = NULL;
>>> +			}
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	thermal_zone_device_set_polling(tz, 0);
>>> +
>>> +	if (tz->type[0])
>>> +		device_remove_file(&tz->device, &dev_attr_type);
>>> +	device_remove_file(&tz->device, &dev_attr_temp);
>>> +	if (tz->ops->get_mode)
>>> +		device_remove_file(&tz->device, &dev_attr_mode);
>>> +	device_remove_file(&tz->device, &dev_attr_policy);
>>> +	remove_trip_attrs(tz);
>>> +	tz->governor = NULL;
>>> +
>>> +	thermal_remove_hwmon_sysfs(tz);
>>> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> +	idr_destroy(&tz->idr);
>>> +	mutex_destroy(&tz->lock);
>>> +	device_unregister(&tz->device);
>>> +	return;
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_device_unregister);
>>> +
>>> +#ifdef CONFIG_NET
>>> +static struct genl_family thermal_event_genl_family = {
>>> +	.id = GENL_ID_GENERATE,
>>> +	.name = THERMAL_GENL_FAMILY_NAME,
>>> +	.version = THERMAL_GENL_VERSION,
>>> +	.maxattr = THERMAL_GENL_ATTR_MAX,
>>> +};
>>> +
>>> +static struct genl_multicast_group thermal_event_mcgrp = {
>>> +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
>>> +};
>>> +
>>> +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
>>> +					enum events event)
>>> +{
>>> +	struct sk_buff *skb;
>>> +	struct nlattr *attr;
>>> +	struct thermal_genl_event *thermal_event;
>>> +	void *msg_header;
>>> +	int size;
>>> +	int result;
>>> +	static unsigned int thermal_event_seqnum;
>>> +
>>> +	if (!tz)
>>> +		return -EINVAL;
>>> +
>>> +	/* allocate memory */
>>> +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
>>> +	       nla_total_size(0);
>>> +
>>> +	skb = genlmsg_new(size, GFP_ATOMIC);
>>> +	if (!skb)
>>> +		return -ENOMEM;
>>> +
>>> +	/* add the genetlink message header */
>>> +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
>>> +				 &thermal_event_genl_family, 0,
>>> +				 THERMAL_GENL_CMD_EVENT);
>>> +	if (!msg_header) {
>>> +		nlmsg_free(skb);
>>> +		return -ENOMEM;
>>> +	}
>>> +
>>> +	/* fill the data */
>>> +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
>>> +			   sizeof(struct thermal_genl_event));
>>> +
>>> +	if (!attr) {
>>> +		nlmsg_free(skb);
>>> +		return -EINVAL;
>>> +	}
>>> +
>>> +	thermal_event = nla_data(attr);
>>> +	if (!thermal_event) {
>>> +		nlmsg_free(skb);
>>> +		return -EINVAL;
>>> +	}
>>> +
>>> +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
>>> +
>>> +	thermal_event->orig = tz->id;
>>> +	thermal_event->event = event;
>>> +
>>> +	/* send multicast genetlink message */
>>> +	result = genlmsg_end(skb, msg_header);
>>> +	if (result < 0) {
>>> +		nlmsg_free(skb);
>>> +		return result;
>>> +	}
>>> +
>>> +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
>>> +	if (result)
>>> +		dev_err(&tz->device, "Failed to send netlink event:%d", result);
>>> +
>>> +	return result;
>>> +}
>>> +EXPORT_SYMBOL(thermal_generate_netlink_event);
>>> +
>>> +static int genetlink_init(void)
>>> +{
>>> +	int result;
>>> +
>>> +	result = genl_register_family(&thermal_event_genl_family);
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	result = genl_register_mc_group(&thermal_event_genl_family,
>>> +					&thermal_event_mcgrp);
>>> +	if (result)
>>> +		genl_unregister_family(&thermal_event_genl_family);
>>> +	return result;
>>> +}
>>> +
>>> +static void genetlink_exit(void)
>>> +{
>>> +	genl_unregister_family(&thermal_event_genl_family);
>>> +}
>>> +#else /* !CONFIG_NET */
>>> +static inline int genetlink_init(void) { return 0; }
>>> +static inline void genetlink_exit(void) {}
>>> +#endif /* !CONFIG_NET */
>>> +
>>> +static int __init thermal_init(void)
>>> +{
>>> +	int result = 0;
>>> +
>>> +	result = class_register(&thermal_class);
>>> +	if (result) {
>>> +		idr_destroy(&thermal_tz_idr);
>>> +		idr_destroy(&thermal_cdev_idr);
>>> +		mutex_destroy(&thermal_idr_lock);
>>> +		mutex_destroy(&thermal_list_lock);
>>> +		return result;
>>> +	}
>>> +	result = genetlink_init();
>>> +	return result;
>>> +}
>>> +
>>> +static void __exit thermal_exit(void)
>>> +{
>>> +	class_unregister(&thermal_class);
>>> +	idr_destroy(&thermal_tz_idr);
>>> +	idr_destroy(&thermal_cdev_idr);
>>> +	mutex_destroy(&thermal_idr_lock);
>>> +	mutex_destroy(&thermal_list_lock);
>>> +	genetlink_exit();
>>> +}
>>> +
>>> +fs_initcall(thermal_init);
>>> +module_exit(thermal_exit);
>>> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
>>> deleted file mode 100644
>>> index 5b7863a..0000000
>>> --- a/drivers/thermal/thermal_sys.c
>>> +++ /dev/null
>>> @@ -1,1888 +0,0 @@
>>> -/*
>>> - *  thermal.c - Generic Thermal Management Sysfs support.
>>> - *
>>> - *  Copyright (C) 2008 Intel Corp
>>> - *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
>>> - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
>>> - *
>>> - *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> - *
>>> - *  This program is free software; you can redistribute it and/or modify
>>> - *  it under the terms of the GNU General Public License as published by
>>> - *  the Free Software Foundation; version 2 of the License.
>>> - *
>>> - *  This program is distributed in the hope that it will be useful, but
>>> - *  WITHOUT ANY WARRANTY; without even the implied warranty of
>>> - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
>>> - *  General Public License for more details.
>>> - *
>>> - *  You should have received a copy of the GNU General Public License along
>>> - *  with this program; if not, write to the Free Software Foundation, Inc.,
>>> - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
>>> - *
>>> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> - */
>>> -
>>> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>>> -
>>> -#include <linux/module.h>
>>> -#include <linux/device.h>
>>> -#include <linux/err.h>
>>> -#include <linux/slab.h>
>>> -#include <linux/kdev_t.h>
>>> -#include <linux/idr.h>
>>> -#include <linux/thermal.h>
>>> -#include <linux/reboot.h>
>>> -#include <net/netlink.h>
>>> -#include <net/genetlink.h>
>>> -
>>> -#include "thermal_core.h"
>>> -
>>> -MODULE_AUTHOR("Zhang Rui");
>>> -MODULE_DESCRIPTION("Generic thermal management sysfs support");
>>> -MODULE_LICENSE("GPL");
>>> -
>>> -static DEFINE_IDR(thermal_tz_idr);
>>> -static DEFINE_IDR(thermal_cdev_idr);
>>> -static DEFINE_MUTEX(thermal_idr_lock);
>>> -
>>> -static LIST_HEAD(thermal_tz_list);
>>> -static LIST_HEAD(thermal_cdev_list);
>>> -static LIST_HEAD(thermal_governor_list);
>>> -
>>> -static DEFINE_MUTEX(thermal_list_lock);
>>> -static DEFINE_MUTEX(thermal_governor_lock);
>>> -
>>> -static struct thermal_governor *__find_governor(const char *name)
>>> -{
>>> -	struct thermal_governor *pos;
>>> -
>>> -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
>>> -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
>>> -			return pos;
>>> -
>>> -	return NULL;
>>> -}
>>> -
>>> -int thermal_register_governor(struct thermal_governor *governor)
>>> -{
>>> -	int err;
>>> -	const char *name;
>>> -	struct thermal_zone_device *pos;
>>> -
>>> -	if (!governor)
>>> -		return -EINVAL;
>>> -
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	err = -EBUSY;
>>> -	if (__find_governor(governor->name) == NULL) {
>>> -		err = 0;
>>> -		list_add(&governor->governor_list, &thermal_governor_list);
>>> -	}
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> -		if (pos->governor)
>>> -			continue;
>>> -		if (pos->tzp)
>>> -			name = pos->tzp->governor_name;
>>> -		else
>>> -			name = DEFAULT_THERMAL_GOVERNOR;
>>> -		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
>>> -			pos->governor = governor;
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -
>>> -	return err;
>>> -}
>>> -EXPORT_SYMBOL_GPL(thermal_register_governor);
>>> -
>>> -void thermal_unregister_governor(struct thermal_governor *governor)
>>> -{
>>> -	struct thermal_zone_device *pos;
>>> -
>>> -	if (!governor)
>>> -		return;
>>> -
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	if (__find_governor(governor->name) == NULL)
>>> -		goto exit;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> -		if (!strnicmp(pos->governor->name, governor->name,
>>> -						THERMAL_NAME_LENGTH))
>>> -			pos->governor = NULL;
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -	list_del(&governor->governor_list);
>>> -exit:
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -	return;
>>> -}
>>> -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
>>> -
>>> -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
>>> -{
>>> -	int ret;
>>> -
>>> -	if (lock)
>>> -		mutex_lock(lock);
>>> -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
>>> -	if (lock)
>>> -		mutex_unlock(lock);
>>> -	if (unlikely(ret < 0))
>>> -		return ret;
>>> -	*id = ret;
>>> -	return 0;
>>> -}
>>> -
>>> -static void release_idr(struct idr *idr, struct mutex *lock, int id)
>>> -{
>>> -	if (lock)
>>> -		mutex_lock(lock);
>>> -	idr_remove(idr, id);
>>> -	if (lock)
>>> -		mutex_unlock(lock);
>>> -}
>>> -
>>> -int get_tz_trend(struct thermal_zone_device *tz, int trip)
>>> -{
>>> -	enum thermal_trend trend;
>>> -
>>> -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
>>> -		if (tz->temperature > tz->last_temperature)
>>> -			trend = THERMAL_TREND_RAISING;
>>> -		else if (tz->temperature < tz->last_temperature)
>>> -			trend = THERMAL_TREND_DROPPING;
>>> -		else
>>> -			trend = THERMAL_TREND_STABLE;
>>> -	}
>>> -
>>> -	return trend;
>>> -}
>>> -EXPORT_SYMBOL(get_tz_trend);
>>> -
>>> -struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
>>> -			struct thermal_cooling_device *cdev, int trip)
>>> -{
>>> -	struct thermal_instance *pos = NULL;
>>> -	struct thermal_instance *target_instance = NULL;
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	mutex_lock(&cdev->lock);
>>> -
>>> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
>>> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> -			target_instance = pos;
>>> -			break;
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&cdev->lock);
>>> -	mutex_unlock(&tz->lock);
>>> -
>>> -	return target_instance;
>>> -}
>>> -EXPORT_SYMBOL(get_thermal_instance);
>>> -
>>> -static void print_bind_err_msg(struct thermal_zone_device *tz,
>>> -			struct thermal_cooling_device *cdev, int ret)
>>> -{
>>> -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
>>> -				tz->type, cdev->type, ret);
>>> -}
>>> -
>>> -static void __bind(struct thermal_zone_device *tz, int mask,
>>> -			struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i, ret;
>>> -
>>> -	for (i = 0; i < tz->trips; i++) {
>>> -		if (mask & (1 << i)) {
>>> -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
>>> -					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
>>> -			if (ret)
>>> -				print_bind_err_msg(tz, cdev, ret);
>>> -		}
>>> -	}
>>> -}
>>> -
>>> -static void __unbind(struct thermal_zone_device *tz, int mask,
>>> -			struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i;
>>> -
>>> -	for (i = 0; i < tz->trips; i++)
>>> -		if (mask & (1 << i))
>>> -			thermal_zone_unbind_cooling_device(tz, i, cdev);
>>> -}
>>> -
>>> -static void bind_cdev(struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i, ret;
>>> -	const struct thermal_zone_params *tzp;
>>> -	struct thermal_zone_device *pos = NULL;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> -		if (!pos->tzp && !pos->ops->bind)
>>> -			continue;
>>> -
>>> -		if (!pos->tzp && pos->ops->bind) {
>>> -			ret = pos->ops->bind(pos, cdev);
>>> -			if (ret)
>>> -				print_bind_err_msg(pos, cdev, ret);
>>> -		}
>>> -
>>> -		tzp = pos->tzp;
>>> -		if (!tzp || !tzp->tbp)
>>> -			continue;
>>> -
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> -				continue;
>>> -			if (tzp->tbp[i].match(pos, cdev))
>>> -				continue;
>>> -			tzp->tbp[i].cdev = cdev;
>>> -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -}
>>> -
>>> -static void bind_tz(struct thermal_zone_device *tz)
>>> -{
>>> -	int i, ret;
>>> -	struct thermal_cooling_device *pos = NULL;
>>> -	const struct thermal_zone_params *tzp = tz->tzp;
>>> -
>>> -	if (!tzp && !tz->ops->bind)
>>> -		return;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	/* If there is no platform data, try to use ops->bind */
>>> -	if (!tzp && tz->ops->bind) {
>>> -		list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> -			ret = tz->ops->bind(tz, pos);
>>> -			if (ret)
>>> -				print_bind_err_msg(tz, pos, ret);
>>> -		}
>>> -		goto exit;
>>> -	}
>>> -
>>> -	if (!tzp || !tzp->tbp)
>>> -		goto exit;
>>> -
>>> -	list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> -				continue;
>>> -			if (tzp->tbp[i].match(tz, pos))
>>> -				continue;
>>> -			tzp->tbp[i].cdev = pos;
>>> -			__bind(tz, tzp->tbp[i].trip_mask, pos);
>>> -		}
>>> -	}
>>> -exit:
>>> -	mutex_unlock(&thermal_list_lock);
>>> -}
>>> -
>>> -static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
>>> -					    int delay)
>>> -{
>>> -	if (delay > 1000)
>>> -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> -				 round_jiffies(msecs_to_jiffies(delay)));
>>> -	else if (delay)
>>> -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> -				 msecs_to_jiffies(delay));
>>> -	else
>>> -		cancel_delayed_work(&tz->poll_queue);
>>> -}
>>> -
>>> -static void monitor_thermal_zone(struct thermal_zone_device *tz)
>>> -{
>>> -	mutex_lock(&tz->lock);
>>> -
>>> -	if (tz->passive)
>>> -		thermal_zone_device_set_polling(tz, tz->passive_delay);
>>> -	else if (tz->polling_delay)
>>> -		thermal_zone_device_set_polling(tz, tz->polling_delay);
>>> -	else
>>> -		thermal_zone_device_set_polling(tz, 0);
>>> -
>>> -	mutex_unlock(&tz->lock);
>>> -}
>>> -
>>> -static void handle_non_critical_trips(struct thermal_zone_device *tz,
>>> -			int trip, enum thermal_trip_type trip_type)
>>> -{
>>> -	if (tz->governor)
>>> -		tz->governor->throttle(tz, trip);
>>> -}
>>> -
>>> -static void handle_critical_trips(struct thermal_zone_device *tz,
>>> -				int trip, enum thermal_trip_type trip_type)
>>> -{
>>> -	long trip_temp;
>>> -
>>> -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
>>> -
>>> -	/* If we have not crossed the trip_temp, we do not care. */
>>> -	if (tz->temperature < trip_temp)
>>> -		return;
>>> -
>>> -	if (tz->ops->notify)
>>> -		tz->ops->notify(tz, trip, trip_type);
>>> -
>>> -	if (trip_type == THERMAL_TRIP_CRITICAL) {
>>> -		dev_emerg(&tz->device,
>>> -			  "critical temperature reached(%d C),shutting down\n",
>>> -			  tz->temperature / 1000);
>>> -		orderly_poweroff(true);
>>> -	}
>>> -}
>>> -
>>> -static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
>>> -{
>>> -	enum thermal_trip_type type;
>>> -
>>> -	tz->ops->get_trip_type(tz, trip, &type);
>>> -
>>> -	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
>>> -		handle_critical_trips(tz, trip, type);
>>> -	else
>>> -		handle_non_critical_trips(tz, trip, type);
>>> -	/*
>>> -	 * Alright, we handled this trip successfully.
>>> -	 * So, start monitoring again.
>>> -	 */
>>> -	monitor_thermal_zone(tz);
>>> -}
>>> -
>>> -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
>>> -				unsigned long *temp)
>>> -{
>>> -	int ret = 0;
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -	int count;
>>> -	unsigned long crit_temp = -1UL;
>>> -	enum thermal_trip_type type;
>>> -#endif
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -
>>> -	ret = tz->ops->get_temp(tz, temp);
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -	if (!tz->emul_temperature)
>>> -		goto skip_emul;
>>> -
>>> -	for (count = 0; count < tz->trips; count++) {
>>> -		ret = tz->ops->get_trip_type(tz, count, &type);
>>> -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
>>> -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
>>> -			break;
>>> -		}
>>> -	}
>>> -
>>> -	if (ret)
>>> -		goto skip_emul;
>>> -
>>> -	if (*temp < crit_temp)
>>> -		*temp = tz->emul_temperature;
>>> -skip_emul:
>>> -#endif
>>> -	mutex_unlock(&tz->lock);
>>> -	return ret;
>>> -}
>>> -
>>> -static void update_temperature(struct thermal_zone_device *tz)
>>> -{
>>> -	long temp;
>>> -	int ret;
>>> -
>>> -	ret = thermal_zone_get_temp(tz, &temp);
>>> -	if (ret) {
>>> -		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
>>> -			 tz->id);
>>> -		return;
>>> -	}
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	tz->last_temperature = tz->temperature;
>>> -	tz->temperature = temp;
>>> -	mutex_unlock(&tz->lock);
>>> -}
>>> -
>>> -void thermal_zone_device_update(struct thermal_zone_device *tz)
>>> -{
>>> -	int count;
>>> -
>>> -	update_temperature(tz);
>>> -
>>> -	for (count = 0; count < tz->trips; count++)
>>> -		handle_thermal_trip(tz, count);
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_device_update);
>>> -
>>> -static void thermal_zone_device_check(struct work_struct *work)
>>> -{
>>> -	struct thermal_zone_device *tz = container_of(work, struct
>>> -						      thermal_zone_device,
>>> -						      poll_queue.work);
>>> -	thermal_zone_device_update(tz);
>>> -}
>>> -
>>> -/* sys I/F for thermal zone */
>>> -
>>> -#define to_thermal_zone(_dev) \
>>> -	container_of(_dev, struct thermal_zone_device, device)
>>> -
>>> -static ssize_t
>>> -type_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -
>>> -	return sprintf(buf, "%s\n", tz->type);
>>> -}
>>> -
>>> -static ssize_t
>>> -temp_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	long temperature;
>>> -	int ret;
>>> -
>>> -	ret = thermal_zone_get_temp(tz, &temperature);
>>> -
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -mode_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	enum thermal_device_mode mode;
>>> -	int result;
>>> -
>>> -	if (!tz->ops->get_mode)
>>> -		return -EPERM;
>>> -
>>> -	result = tz->ops->get_mode(tz, &mode);
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
>>> -		       : "disabled");
>>> -}
>>> -
>>> -static ssize_t
>>> -mode_store(struct device *dev, struct device_attribute *attr,
>>> -	   const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int result;
>>> -
>>> -	if (!tz->ops->set_mode)
>>> -		return -EPERM;
>>> -
>>> -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
>>> -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
>>> -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
>>> -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
>>> -	else
>>> -		result = -EINVAL;
>>> -
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	return count;
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_type_show(struct device *dev, struct device_attribute *attr,
>>> -		     char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	enum thermal_trip_type type;
>>> -	int trip, result;
>>> -
>>> -	if (!tz->ops->get_trip_type)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	result = tz->ops->get_trip_type(tz, trip, &type);
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	switch (type) {
>>> -	case THERMAL_TRIP_CRITICAL:
>>> -		return sprintf(buf, "critical\n");
>>> -	case THERMAL_TRIP_HOT:
>>> -		return sprintf(buf, "hot\n");
>>> -	case THERMAL_TRIP_PASSIVE:
>>> -		return sprintf(buf, "passive\n");
>>> -	case THERMAL_TRIP_ACTIVE:
>>> -		return sprintf(buf, "active\n");
>>> -	default:
>>> -		return sprintf(buf, "unknown\n");
>>> -	}
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_temp_store(struct device *dev, struct device_attribute *attr,
>>> -		     const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	unsigned long temperature;
>>> -
>>> -	if (!tz->ops->set_trip_temp)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	if (kstrtoul(buf, 10, &temperature))
>>> -		return -EINVAL;
>>> -
>>> -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
>>> -
>>> -	return ret ? ret : count;
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_temp_show(struct device *dev, struct device_attribute *attr,
>>> -		     char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	long temperature;
>>> -
>>> -	if (!tz->ops->get_trip_temp)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
>>> -
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
>>> -			const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	unsigned long temperature;
>>> -
>>> -	if (!tz->ops->set_trip_hyst)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	if (kstrtoul(buf, 10, &temperature))
>>> -		return -EINVAL;
>>> -
>>> -	/*
>>> -	 * We are not doing any check on the 'temperature' value
>>> -	 * here. The driver implementing 'set_trip_hyst' has to
>>> -	 * take care of this.
>>> -	 */
>>> -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
>>> -
>>> -	return ret ? ret : count;
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
>>> -			char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	unsigned long temperature;
>>> -
>>> -	if (!tz->ops->get_trip_hyst)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
>>> -
>>> -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -passive_store(struct device *dev, struct device_attribute *attr,
>>> -		    const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	struct thermal_cooling_device *cdev = NULL;
>>> -	int state;
>>> -
>>> -	if (!sscanf(buf, "%d\n", &state))
>>> -		return -EINVAL;
>>> -
>>> -	/* sanity check: values below 1000 millicelcius don't make sense
>>> -	 * and can cause the system to go into a thermal heart attack
>>> -	 */
>>> -	if (state && state < 1000)
>>> -		return -EINVAL;
>>> -
>>> -	if (state && !tz->forced_passive) {
>>> -		mutex_lock(&thermal_list_lock);
>>> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> -			if (!strncmp("Processor", cdev->type,
>>> -				     sizeof("Processor")))
>>> -				thermal_zone_bind_cooling_device(tz,
>>> -						THERMAL_TRIPS_NONE, cdev,
>>> -						THERMAL_NO_LIMIT,
>>> -						THERMAL_NO_LIMIT);
>>> -		}
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		if (!tz->passive_delay)
>>> -			tz->passive_delay = 1000;
>>> -	} else if (!state && tz->forced_passive) {
>>> -		mutex_lock(&thermal_list_lock);
>>> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> -			if (!strncmp("Processor", cdev->type,
>>> -				     sizeof("Processor")))
>>> -				thermal_zone_unbind_cooling_device(tz,
>>> -								   THERMAL_TRIPS_NONE,
>>> -								   cdev);
>>> -		}
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		tz->passive_delay = 0;
>>> -	}
>>> -
>>> -	tz->forced_passive = state;
>>> -
>>> -	thermal_zone_device_update(tz);
>>> -
>>> -	return count;
>>> -}
>>> -
>>> -static ssize_t
>>> -passive_show(struct device *dev, struct device_attribute *attr,
>>> -		   char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -
>>> -	return sprintf(buf, "%d\n", tz->forced_passive);
>>> -}
>>> -
>>> -static ssize_t
>>> -policy_store(struct device *dev, struct device_attribute *attr,
>>> -		    const char *buf, size_t count)
>>> -{
>>> -	int ret = -EINVAL;
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	struct thermal_governor *gov;
>>> -
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	gov = __find_governor(buf);
>>> -	if (!gov)
>>> -		goto exit;
>>> -
>>> -	tz->governor = gov;
>>> -	ret = count;
>>> -
>>> -exit:
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -	return ret;
>>> -}
>>> -
>>> -static ssize_t
>>> -policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -
>>> -	return sprintf(buf, "%s\n", tz->governor->name);
>>> -}
>>> -
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -static ssize_t
>>> -emul_temp_store(struct device *dev, struct device_attribute *attr,
>>> -		     const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int ret = 0;
>>> -	unsigned long temperature;
>>> -
>>> -	if (kstrtoul(buf, 10, &temperature))
>>> -		return -EINVAL;
>>> -
>>> -	if (!tz->ops->set_emul_temp) {
>>> -		mutex_lock(&tz->lock);
>>> -		tz->emul_temperature = temperature;
>>> -		mutex_unlock(&tz->lock);
>>> -	} else {
>>> -		ret = tz->ops->set_emul_temp(tz, temperature);
>>> -	}
>>> -
>>> -	return ret ? ret : count;
>>> -}
>>> -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
>>> -#endif/*CONFIG_THERMAL_EMULATION*/
>>> -
>>> -static DEVICE_ATTR(type, 0444, type_show, NULL);
>>> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
>>> -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
>>> -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
>>> -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
>>> -
>>> -/* sys I/F for cooling device */
>>> -#define to_cooling_device(_dev)	\
>>> -	container_of(_dev, struct thermal_cooling_device, device)
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_type_show(struct device *dev,
>>> -				 struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -
>>> -	return sprintf(buf, "%s\n", cdev->type);
>>> -}
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_max_state_show(struct device *dev,
>>> -				      struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -	unsigned long state;
>>> -	int ret;
>>> -
>>> -	ret = cdev->ops->get_max_state(cdev, &state);
>>> -	if (ret)
>>> -		return ret;
>>> -	return sprintf(buf, "%ld\n", state);
>>> -}
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_cur_state_show(struct device *dev,
>>> -				      struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -	unsigned long state;
>>> -	int ret;
>>> -
>>> -	ret = cdev->ops->get_cur_state(cdev, &state);
>>> -	if (ret)
>>> -		return ret;
>>> -	return sprintf(buf, "%ld\n", state);
>>> -}
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_cur_state_store(struct device *dev,
>>> -				       struct device_attribute *attr,
>>> -				       const char *buf, size_t count)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -	unsigned long state;
>>> -	int result;
>>> -
>>> -	if (!sscanf(buf, "%ld\n", &state))
>>> -		return -EINVAL;
>>> -
>>> -	if ((long)state < 0)
>>> -		return -EINVAL;
>>> -
>>> -	result = cdev->ops->set_cur_state(cdev, state);
>>> -	if (result)
>>> -		return result;
>>> -	return count;
>>> -}
>>> -
>>> -static struct device_attribute dev_attr_cdev_type =
>>> -__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
>>> -static DEVICE_ATTR(max_state, 0444,
>>> -		   thermal_cooling_device_max_state_show, NULL);
>>> -static DEVICE_ATTR(cur_state, 0644,
>>> -		   thermal_cooling_device_cur_state_show,
>>> -		   thermal_cooling_device_cur_state_store);
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_trip_point_show(struct device *dev,
>>> -				       struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_instance *instance;
>>> -
>>> -	instance =
>>> -	    container_of(attr, struct thermal_instance, attr);
>>> -
>>> -	if (instance->trip == THERMAL_TRIPS_NONE)
>>> -		return sprintf(buf, "-1\n");
>>> -	else
>>> -		return sprintf(buf, "%d\n", instance->trip);
>>> -}
>>> -
>>> -/* Device management */
>>> -
>>> -#if defined(CONFIG_THERMAL_HWMON)
>>> -
>>> -/* hwmon sys I/F */
>>> -#include <linux/hwmon.h>
>>> -
>>> -/* thermal zone devices with the same type share one hwmon device */
>>> -struct thermal_hwmon_device {
>>> -	char type[THERMAL_NAME_LENGTH];
>>> -	struct device *device;
>>> -	int count;
>>> -	struct list_head tz_list;
>>> -	struct list_head node;
>>> -};
>>> -
>>> -struct thermal_hwmon_attr {
>>> -	struct device_attribute attr;
>>> -	char name[16];
>>> -};
>>> -
>>> -/* one temperature input for each thermal zone */
>>> -struct thermal_hwmon_temp {
>>> -	struct list_head hwmon_node;
>>> -	struct thermal_zone_device *tz;
>>> -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
>>> -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
>>> -};
>>> -
>>> -static LIST_HEAD(thermal_hwmon_list);
>>> -
>>> -static ssize_t
>>> -name_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
>>> -	return sprintf(buf, "%s\n", hwmon->type);
>>> -}
>>> -static DEVICE_ATTR(name, 0444, name_show, NULL);
>>> -
>>> -static ssize_t
>>> -temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	long temperature;
>>> -	int ret;
>>> -	struct thermal_hwmon_attr *hwmon_attr
>>> -			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> -	struct thermal_hwmon_temp *temp
>>> -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> -				       temp_input);
>>> -	struct thermal_zone_device *tz = temp->tz;
>>> -
>>> -	ret = thermal_zone_get_temp(tz, &temperature);
>>> -
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -temp_crit_show(struct device *dev, struct device_attribute *attr,
>>> -		char *buf)
>>> -{
>>> -	struct thermal_hwmon_attr *hwmon_attr
>>> -			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> -	struct thermal_hwmon_temp *temp
>>> -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> -				       temp_crit);
>>> -	struct thermal_zone_device *tz = temp->tz;
>>> -	long temperature;
>>> -	int ret;
>>> -
>>> -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -
>>> -static struct thermal_hwmon_device *
>>> -thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
>>> -		if (!strcmp(hwmon->type, tz->type)) {
>>> -			mutex_unlock(&thermal_list_lock);
>>> -			return hwmon;
>>> -		}
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	return NULL;
>>> -}
>>> -
>>> -/* Find the temperature input matching a given thermal zone */
>>> -static struct thermal_hwmon_temp *
>>> -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
>>> -			  const struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_temp *temp;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
>>> -		if (temp->tz == tz) {
>>> -			mutex_unlock(&thermal_list_lock);
>>> -			return temp;
>>> -		}
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	return NULL;
>>> -}
>>> -
>>> -static int
>>> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon;
>>> -	struct thermal_hwmon_temp *temp;
>>> -	int new_hwmon_device = 1;
>>> -	int result;
>>> -
>>> -	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> -	if (hwmon) {
>>> -		new_hwmon_device = 0;
>>> -		goto register_sys_interface;
>>> -	}
>>> -
>>> -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
>>> -	if (!hwmon)
>>> -		return -ENOMEM;
>>> -
>>> -	INIT_LIST_HEAD(&hwmon->tz_list);
>>> -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
>>> -	hwmon->device = hwmon_device_register(NULL);
>>> -	if (IS_ERR(hwmon->device)) {
>>> -		result = PTR_ERR(hwmon->device);
>>> -		goto free_mem;
>>> -	}
>>> -	dev_set_drvdata(hwmon->device, hwmon);
>>> -	result = device_create_file(hwmon->device, &dev_attr_name);
>>> -	if (result)
>>> -		goto free_mem;
>>> -
>>> - register_sys_interface:
>>> -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
>>> -	if (!temp) {
>>> -		result = -ENOMEM;
>>> -		goto unregister_name;
>>> -	}
>>> -
>>> -	temp->tz = tz;
>>> -	hwmon->count++;
>>> -
>>> -	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
>>> -		 "temp%d_input", hwmon->count);
>>> -	temp->temp_input.attr.attr.name = temp->temp_input.name;
>>> -	temp->temp_input.attr.attr.mode = 0444;
>>> -	temp->temp_input.attr.show = temp_input_show;
>>> -	sysfs_attr_init(&temp->temp_input.attr.attr);
>>> -	result = device_create_file(hwmon->device, &temp->temp_input.attr);
>>> -	if (result)
>>> -		goto free_temp_mem;
>>> -
>>> -	if (tz->ops->get_crit_temp) {
>>> -		unsigned long temperature;
>>> -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
>>> -			snprintf(temp->temp_crit.name,
>>> -				 sizeof(temp->temp_crit.name),
>>> -				"temp%d_crit", hwmon->count);
>>> -			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
>>> -			temp->temp_crit.attr.attr.mode = 0444;
>>> -			temp->temp_crit.attr.show = temp_crit_show;
>>> -			sysfs_attr_init(&temp->temp_crit.attr.attr);
>>> -			result = device_create_file(hwmon->device,
>>> -						    &temp->temp_crit.attr);
>>> -			if (result)
>>> -				goto unregister_input;
>>> -		}
>>> -	}
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	if (new_hwmon_device)
>>> -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
>>> -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	return 0;
>>> -
>>> - unregister_input:
>>> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> - free_temp_mem:
>>> -	kfree(temp);
>>> - unregister_name:
>>> -	if (new_hwmon_device) {
>>> -		device_remove_file(hwmon->device, &dev_attr_name);
>>> -		hwmon_device_unregister(hwmon->device);
>>> -	}
>>> - free_mem:
>>> -	if (new_hwmon_device)
>>> -		kfree(hwmon);
>>> -
>>> -	return result;
>>> -}
>>> -
>>> -static void
>>> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon;
>>> -	struct thermal_hwmon_temp *temp;
>>> -
>>> -	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> -	if (unlikely(!hwmon)) {
>>> -		/* Should never happen... */
>>> -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
>>> -		return;
>>> -	}
>>> -
>>> -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
>>> -	if (unlikely(!temp)) {
>>> -		/* Should never happen... */
>>> -		dev_dbg(&tz->device, "temperature input lookup failed!\n");
>>> -		return;
>>> -	}
>>> -
>>> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> -	if (tz->ops->get_crit_temp)
>>> -		device_remove_file(hwmon->device, &temp->temp_crit.attr);
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_del(&temp->hwmon_node);
>>> -	kfree(temp);
>>> -	if (!list_empty(&hwmon->tz_list)) {
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		return;
>>> -	}
>>> -	list_del(&hwmon->node);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	device_remove_file(hwmon->device, &dev_attr_name);
>>> -	hwmon_device_unregister(hwmon->device);
>>> -	kfree(hwmon);
>>> -}
>>> -#else
>>> -static int
>>> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -	return 0;
>>> -}
>>> -
>>> -static void
>>> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -}
>>> -#endif
>>> -
>>> -/**
>>> - * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
>>> - * @tz:		thermal zone device
>>> - * @trip:	indicates which trip point the cooling devices is
>>> - *		associated with in this thermal zone.
>>> - * @cdev:	thermal cooling device
>>> - *
>>> - * This function is usually called in the thermal zone device .bind callback.
>>> - */
>>> -int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
>>> -				     int trip,
>>> -				     struct thermal_cooling_device *cdev,
>>> -				     unsigned long upper, unsigned long lower)
>>> -{
>>> -	struct thermal_instance *dev;
>>> -	struct thermal_instance *pos;
>>> -	struct thermal_zone_device *pos1;
>>> -	struct thermal_cooling_device *pos2;
>>> -	unsigned long max_state;
>>> -	int result;
>>> -
>>> -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
>>> -		return -EINVAL;
>>> -
>>> -	list_for_each_entry(pos1, &thermal_tz_list, node) {
>>> -		if (pos1 == tz)
>>> -			break;
>>> -	}
>>> -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
>>> -		if (pos2 == cdev)
>>> -			break;
>>> -	}
>>> -
>>> -	if (tz != pos1 || cdev != pos2)
>>> -		return -EINVAL;
>>> -
>>> -	cdev->ops->get_max_state(cdev, &max_state);
>>> -
>>> -	/* lower default 0, upper default max_state */
>>> -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
>>> -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
>>> -
>>> -	if (lower > upper || upper > max_state)
>>> -		return -EINVAL;
>>> -
>>> -	dev =
>>> -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
>>> -	if (!dev)
>>> -		return -ENOMEM;
>>> -	dev->tz = tz;
>>> -	dev->cdev = cdev;
>>> -	dev->trip = trip;
>>> -	dev->upper = upper;
>>> -	dev->lower = lower;
>>> -	dev->target = THERMAL_NO_TARGET;
>>> -
>>> -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
>>> -	if (result)
>>> -		goto free_mem;
>>> -
>>> -	sprintf(dev->name, "cdev%d", dev->id);
>>> -	result =
>>> -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
>>> -	if (result)
>>> -		goto release_idr;
>>> -
>>> -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
>>> -	sysfs_attr_init(&dev->attr.attr);
>>> -	dev->attr.attr.name = dev->attr_name;
>>> -	dev->attr.attr.mode = 0444;
>>> -	dev->attr.show = thermal_cooling_device_trip_point_show;
>>> -	result = device_create_file(&tz->device, &dev->attr);
>>> -	if (result)
>>> -		goto remove_symbol_link;
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	mutex_lock(&cdev->lock);
>>> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
>>> -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> -		result = -EEXIST;
>>> -		break;
>>> -	}
>>> -	if (!result) {
>>> -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
>>> -		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
>>> -	}
>>> -	mutex_unlock(&cdev->lock);
>>> -	mutex_unlock(&tz->lock);
>>> -
>>> -	if (!result)
>>> -		return 0;
>>> -
>>> -	device_remove_file(&tz->device, &dev->attr);
>>> -remove_symbol_link:
>>> -	sysfs_remove_link(&tz->device.kobj, dev->name);
>>> -release_idr:
>>> -	release_idr(&tz->idr, &tz->lock, dev->id);
>>> -free_mem:
>>> -	kfree(dev);
>>> -	return result;
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
>>> -
>>> -/**
>>> - * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
>>> - * @tz:		thermal zone device
>>> - * @trip:	indicates which trip point the cooling devices is
>>> - *		associated with in this thermal zone.
>>> - * @cdev:	thermal cooling device
>>> - *
>>> - * This function is usually called in the thermal zone device .unbind callback.
>>> - */
>>> -int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
>>> -				       int trip,
>>> -				       struct thermal_cooling_device *cdev)
>>> -{
>>> -	struct thermal_instance *pos, *next;
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	mutex_lock(&cdev->lock);
>>> -	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
>>> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> -			list_del(&pos->tz_node);
>>> -			list_del(&pos->cdev_node);
>>> -			mutex_unlock(&cdev->lock);
>>> -			mutex_unlock(&tz->lock);
>>> -			goto unbind;
>>> -		}
>>> -	}
>>> -	mutex_unlock(&cdev->lock);
>>> -	mutex_unlock(&tz->lock);
>>> -
>>> -	return -ENODEV;
>>> -
>>> -unbind:
>>> -	device_remove_file(&tz->device, &pos->attr);
>>> -	sysfs_remove_link(&tz->device.kobj, pos->name);
>>> -	release_idr(&tz->idr, &tz->lock, pos->id);
>>> -	kfree(pos);
>>> -	return 0;
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
>>> -
>>> -static void thermal_release(struct device *dev)
>>> -{
>>> -	struct thermal_zone_device *tz;
>>> -	struct thermal_cooling_device *cdev;
>>> -
>>> -	if (!strncmp(dev_name(dev), "thermal_zone",
>>> -		     sizeof("thermal_zone") - 1)) {
>>> -		tz = to_thermal_zone(dev);
>>> -		kfree(tz);
>>> -	} else {
>>> -		cdev = to_cooling_device(dev);
>>> -		kfree(cdev);
>>> -	}
>>> -}
>>> -
>>> -static struct class thermal_class = {
>>> -	.name = "thermal",
>>> -	.dev_release = thermal_release,
>>> -};
>>> -
>>> -/**
>>> - * thermal_cooling_device_register - register a new thermal cooling device
>>> - * @type:	the thermal cooling device type.
>>> - * @devdata:	device private data.
>>> - * @ops:		standard thermal cooling devices callbacks.
>>> - */
>>> -struct thermal_cooling_device *
>>> -thermal_cooling_device_register(char *type, void *devdata,
>>> -				const struct thermal_cooling_device_ops *ops)
>>> -{
>>> -	struct thermal_cooling_device *cdev;
>>> -	int result;
>>> -
>>> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
>>> -	    !ops->set_cur_state)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
>>> -	if (!cdev)
>>> -		return ERR_PTR(-ENOMEM);
>>> -
>>> -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
>>> -	if (result) {
>>> -		kfree(cdev);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	strcpy(cdev->type, type ? : "");
>>> -	mutex_init(&cdev->lock);
>>> -	INIT_LIST_HEAD(&cdev->thermal_instances);
>>> -	cdev->ops = ops;
>>> -	cdev->updated = true;
>>> -	cdev->device.class = &thermal_class;
>>> -	cdev->devdata = devdata;
>>> -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
>>> -	result = device_register(&cdev->device);
>>> -	if (result) {
>>> -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> -		kfree(cdev);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	/* sys I/F */
>>> -	if (type) {
>>> -		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -	result = device_create_file(&cdev->device, &dev_attr_max_state);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	/* Add 'this' new cdev to the global cdev list */
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_add(&cdev->node, &thermal_cdev_list);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	/* Update binding information for 'this' new cdev */
>>> -	bind_cdev(cdev);
>>> -
>>> -	return cdev;
>>> -
>>> -unregister:
>>> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> -	device_unregister(&cdev->device);
>>> -	return ERR_PTR(result);
>>> -}
>>> -EXPORT_SYMBOL(thermal_cooling_device_register);
>>> -
>>> -/**
>>> - * thermal_cooling_device_unregister - removes the registered thermal cooling device
>>> - * @cdev:	the thermal cooling device to remove.
>>> - *
>>> - * thermal_cooling_device_unregister() must be called when the device is no
>>> - * longer needed.
>>> - */
>>> -void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i;
>>> -	const struct thermal_zone_params *tzp;
>>> -	struct thermal_zone_device *tz;
>>> -	struct thermal_cooling_device *pos = NULL;
>>> -
>>> -	if (!cdev)
>>> -		return;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(pos, &thermal_cdev_list, node)
>>> -	    if (pos == cdev)
>>> -		break;
>>> -	if (pos != cdev) {
>>> -		/* thermal cooling device not found */
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		return;
>>> -	}
>>> -	list_del(&cdev->node);
>>> -
>>> -	/* Unbind all thermal zones associated with 'this' cdev */
>>> -	list_for_each_entry(tz, &thermal_tz_list, node) {
>>> -		if (tz->ops->unbind) {
>>> -			tz->ops->unbind(tz, cdev);
>>> -			continue;
>>> -		}
>>> -
>>> -		if (!tz->tzp || !tz->tzp->tbp)
>>> -			continue;
>>> -
>>> -		tzp = tz->tzp;
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev == cdev) {
>>> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> -				tzp->tbp[i].cdev = NULL;
>>> -			}
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	if (cdev->type[0])
>>> -		device_remove_file(&cdev->device, &dev_attr_cdev_type);
>>> -	device_remove_file(&cdev->device, &dev_attr_max_state);
>>> -	device_remove_file(&cdev->device, &dev_attr_cur_state);
>>> -
>>> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> -	device_unregister(&cdev->device);
>>> -	return;
>>> -}
>>> -EXPORT_SYMBOL(thermal_cooling_device_unregister);
>>> -
>>> -void thermal_cdev_update(struct thermal_cooling_device *cdev)
>>> -{
>>> -	struct thermal_instance *instance;
>>> -	unsigned long target = 0;
>>> -
>>> -	/* cooling device is updated*/
>>> -	if (cdev->updated)
>>> -		return;
>>> -
>>> -	mutex_lock(&cdev->lock);
>>> -	/* Make sure cdev enters the deepest cooling state */
>>> -	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
>>> -		if (instance->target == THERMAL_NO_TARGET)
>>> -			continue;
>>> -		if (instance->target > target)
>>> -			target = instance->target;
>>> -	}
>>> -	mutex_unlock(&cdev->lock);
>>> -	cdev->ops->set_cur_state(cdev, target);
>>> -	cdev->updated = true;
>>> -}
>>> -EXPORT_SYMBOL(thermal_cdev_update);
>>> -
>>> -/**
>>> - * notify_thermal_framework - Sensor drivers use this API to notify framework
>>> - * @tz:		thermal zone device
>>> - * @trip:	indicates which trip point has been crossed
>>> - *
>>> - * This function handles the trip events from sensor drivers. It starts
>>> - * throttling the cooling devices according to the policy configured.
>>> - * For CRITICAL and HOT trip points, this notifies the respective drivers,
>>> - * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
>>> - * The throttling policy is based on the configured platform data; if no
>>> - * platform data is provided, this uses the step_wise throttling policy.
>>> - */
>>> -void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
>>> -{
>>> -	handle_thermal_trip(tz, trip);
>>> -}
>>> -EXPORT_SYMBOL(notify_thermal_framework);
>>> -
>>> -/**
>>> - * create_trip_attrs - create attributes for trip points
>>> - * @tz:		the thermal zone device
>>> - * @mask:	Writeable trip point bitmap.
>>> - */
>>> -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
>>> -{
>>> -	int indx;
>>> -	int size = sizeof(struct thermal_attr) * tz->trips;
>>> -
>>> -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
>>> -	if (!tz->trip_type_attrs)
>>> -		return -ENOMEM;
>>> -
>>> -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
>>> -	if (!tz->trip_temp_attrs) {
>>> -		kfree(tz->trip_type_attrs);
>>> -		return -ENOMEM;
>>> -	}
>>> -
>>> -	if (tz->ops->get_trip_hyst) {
>>> -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
>>> -		if (!tz->trip_hyst_attrs) {
>>> -			kfree(tz->trip_type_attrs);
>>> -			kfree(tz->trip_temp_attrs);
>>> -			return -ENOMEM;
>>> -		}
>>> -	}
>>> -
>>> -
>>> -	for (indx = 0; indx < tz->trips; indx++) {
>>> -		/* create trip type attribute */
>>> -		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> -			 "trip_point_%d_type", indx);
>>> -
>>> -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
>>> -		tz->trip_type_attrs[indx].attr.attr.name =
>>> -						tz->trip_type_attrs[indx].name;
>>> -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
>>> -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
>>> -
>>> -		device_create_file(&tz->device,
>>> -				   &tz->trip_type_attrs[indx].attr);
>>> -
>>> -		/* create trip temp attribute */
>>> -		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> -			 "trip_point_%d_temp", indx);
>>> -
>>> -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
>>> -		tz->trip_temp_attrs[indx].attr.attr.name =
>>> -						tz->trip_temp_attrs[indx].name;
>>> -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
>>> -		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
>>> -		if (mask & (1 << indx)) {
>>> -			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> -			tz->trip_temp_attrs[indx].attr.store =
>>> -							trip_point_temp_store;
>>> -		}
>>> -
>>> -		device_create_file(&tz->device,
>>> -				   &tz->trip_temp_attrs[indx].attr);
>>> -
>>> -		/* create Optional trip hyst attribute */
>>> -		if (!tz->ops->get_trip_hyst)
>>> -			continue;
>>> -		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> -			 "trip_point_%d_hyst", indx);
>>> -
>>> -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
>>> -		tz->trip_hyst_attrs[indx].attr.attr.name =
>>> -					tz->trip_hyst_attrs[indx].name;
>>> -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
>>> -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
>>> -		if (tz->ops->set_trip_hyst) {
>>> -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> -			tz->trip_hyst_attrs[indx].attr.store =
>>> -					trip_point_hyst_store;
>>> -		}
>>> -
>>> -		device_create_file(&tz->device,
>>> -				   &tz->trip_hyst_attrs[indx].attr);
>>> -	}
>>> -	return 0;
>>> -}
>>> -
>>> -static void remove_trip_attrs(struct thermal_zone_device *tz)
>>> -{
>>> -	int indx;
>>> -
>>> -	for (indx = 0; indx < tz->trips; indx++) {
>>> -		device_remove_file(&tz->device,
>>> -				   &tz->trip_type_attrs[indx].attr);
>>> -		device_remove_file(&tz->device,
>>> -				   &tz->trip_temp_attrs[indx].attr);
>>> -		if (tz->ops->get_trip_hyst)
>>> -			device_remove_file(&tz->device,
>>> -				  &tz->trip_hyst_attrs[indx].attr);
>>> -	}
>>> -	kfree(tz->trip_type_attrs);
>>> -	kfree(tz->trip_temp_attrs);
>>> -	kfree(tz->trip_hyst_attrs);
>>> -}
>>> -
>>> -/**
>>> - * thermal_zone_device_register - register a new thermal zone device
>>> - * @type:	the thermal zone device type
>>> - * @trips:	the number of trip points the thermal zone support
>>> - * @mask:	a bit string indicating the writeablility of trip points
>>> - * @devdata:	private device data
>>> - * @ops:	standard thermal zone device callbacks
>>> - * @tzp:	thermal zone platform parameters
>>> - * @passive_delay: number of milliseconds to wait between polls when
>>> - *		   performing passive cooling
>>> - * @polling_delay: number of milliseconds to wait between polls when checking
>>> - *		   whether trip points have been crossed (0 for interrupt
>>> - *		   driven systems)
>>> - *
>>> - * thermal_zone_device_unregister() must be called when the device is no
>>> - * longer needed. The passive cooling depends on the .get_trend() return value.
>>> - */
>>> -struct thermal_zone_device *thermal_zone_device_register(const char *type,
>>> -	int trips, int mask, void *devdata,
>>> -	const struct thermal_zone_device_ops *ops,
>>> -	const struct thermal_zone_params *tzp,
>>> -	int passive_delay, int polling_delay)
>>> -{
>>> -	struct thermal_zone_device *tz;
>>> -	enum thermal_trip_type trip_type;
>>> -	int result;
>>> -	int count;
>>> -	int passive = 0;
>>> -
>>> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (!ops || !ops->get_temp)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (trips > 0 && !ops->get_trip_type)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
>>> -	if (!tz)
>>> -		return ERR_PTR(-ENOMEM);
>>> -
>>> -	INIT_LIST_HEAD(&tz->thermal_instances);
>>> -	idr_init(&tz->idr);
>>> -	mutex_init(&tz->lock);
>>> -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
>>> -	if (result) {
>>> -		kfree(tz);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	strcpy(tz->type, type ? : "");
>>> -	tz->ops = ops;
>>> -	tz->tzp = tzp;
>>> -	tz->device.class = &thermal_class;
>>> -	tz->devdata = devdata;
>>> -	tz->trips = trips;
>>> -	tz->passive_delay = passive_delay;
>>> -	tz->polling_delay = polling_delay;
>>> -
>>> -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
>>> -	result = device_register(&tz->device);
>>> -	if (result) {
>>> -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> -		kfree(tz);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	/* sys I/F */
>>> -	if (type) {
>>> -		result = device_create_file(&tz->device, &dev_attr_type);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -	result = device_create_file(&tz->device, &dev_attr_temp);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	if (ops->get_mode) {
>>> -		result = device_create_file(&tz->device, &dev_attr_mode);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -	result = create_trip_attrs(tz, mask);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	for (count = 0; count < trips; count++) {
>>> -		tz->ops->get_trip_type(tz, count, &trip_type);
>>> -		if (trip_type == THERMAL_TRIP_PASSIVE)
>>> -			passive = 1;
>>> -	}
>>> -
>>> -	if (!passive) {
>>> -		result = device_create_file(&tz->device, &dev_attr_passive);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
>>> -	if (result)
>>> -		goto unregister;
>>> -#endif
>>> -	/* Create policy attribute */
>>> -	result = device_create_file(&tz->device, &dev_attr_policy);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	/* Update 'this' zone's governor information */
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	if (tz->tzp)
>>> -		tz->governor = __find_governor(tz->tzp->governor_name);
>>> -	else
>>> -		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
>>> -
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -
>>> -	result = thermal_add_hwmon_sysfs(tz);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_add_tail(&tz->node, &thermal_tz_list);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	/* Bind cooling devices for this zone */
>>> -	bind_tz(tz);
>>> -
>>> -	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
>>> -
>>> -	thermal_zone_device_update(tz);
>>> -
>>> -	if (!result)
>>> -		return tz;
>>> -
>>> -unregister:
>>> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> -	device_unregister(&tz->device);
>>> -	return ERR_PTR(result);
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_device_register);
>>> -
>>> -/**
>>> - * thermal_device_unregister - removes the registered thermal zone device
>>> - * @tz: the thermal zone device to remove
>>> - */
>>> -void thermal_zone_device_unregister(struct thermal_zone_device *tz)
>>> -{
>>> -	int i;
>>> -	const struct thermal_zone_params *tzp;
>>> -	struct thermal_cooling_device *cdev;
>>> -	struct thermal_zone_device *pos = NULL;
>>> -
>>> -	if (!tz)
>>> -		return;
>>> -
>>> -	tzp = tz->tzp;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(pos, &thermal_tz_list, node)
>>> -	    if (pos == tz)
>>> -		break;
>>> -	if (pos != tz) {
>>> -		/* thermal zone device not found */
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		return;
>>> -	}
>>> -	list_del(&tz->node);
>>> -
>>> -	/* Unbind all cdevs associated with 'this' thermal zone */
>>> -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> -		if (tz->ops->unbind) {
>>> -			tz->ops->unbind(tz, cdev);
>>> -			continue;
>>> -		}
>>> -
>>> -		if (!tzp || !tzp->tbp)
>>> -			break;
>>> -
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev == cdev) {
>>> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> -				tzp->tbp[i].cdev = NULL;
>>> -			}
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	thermal_zone_device_set_polling(tz, 0);
>>> -
>>> -	if (tz->type[0])
>>> -		device_remove_file(&tz->device, &dev_attr_type);
>>> -	device_remove_file(&tz->device, &dev_attr_temp);
>>> -	if (tz->ops->get_mode)
>>> -		device_remove_file(&tz->device, &dev_attr_mode);
>>> -	device_remove_file(&tz->device, &dev_attr_policy);
>>> -	remove_trip_attrs(tz);
>>> -	tz->governor = NULL;
>>> -
>>> -	thermal_remove_hwmon_sysfs(tz);
>>> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> -	idr_destroy(&tz->idr);
>>> -	mutex_destroy(&tz->lock);
>>> -	device_unregister(&tz->device);
>>> -	return;
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_device_unregister);
>>> -
>>> -#ifdef CONFIG_NET
>>> -static struct genl_family thermal_event_genl_family = {
>>> -	.id = GENL_ID_GENERATE,
>>> -	.name = THERMAL_GENL_FAMILY_NAME,
>>> -	.version = THERMAL_GENL_VERSION,
>>> -	.maxattr = THERMAL_GENL_ATTR_MAX,
>>> -};
>>> -
>>> -static struct genl_multicast_group thermal_event_mcgrp = {
>>> -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
>>> -};
>>> -
>>> -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
>>> -					enum events event)
>>> -{
>>> -	struct sk_buff *skb;
>>> -	struct nlattr *attr;
>>> -	struct thermal_genl_event *thermal_event;
>>> -	void *msg_header;
>>> -	int size;
>>> -	int result;
>>> -	static unsigned int thermal_event_seqnum;
>>> -
>>> -	if (!tz)
>>> -		return -EINVAL;
>>> -
>>> -	/* allocate memory */
>>> -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
>>> -	       nla_total_size(0);
>>> -
>>> -	skb = genlmsg_new(size, GFP_ATOMIC);
>>> -	if (!skb)
>>> -		return -ENOMEM;
>>> -
>>> -	/* add the genetlink message header */
>>> -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
>>> -				 &thermal_event_genl_family, 0,
>>> -				 THERMAL_GENL_CMD_EVENT);
>>> -	if (!msg_header) {
>>> -		nlmsg_free(skb);
>>> -		return -ENOMEM;
>>> -	}
>>> -
>>> -	/* fill the data */
>>> -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
>>> -			   sizeof(struct thermal_genl_event));
>>> -
>>> -	if (!attr) {
>>> -		nlmsg_free(skb);
>>> -		return -EINVAL;
>>> -	}
>>> -
>>> -	thermal_event = nla_data(attr);
>>> -	if (!thermal_event) {
>>> -		nlmsg_free(skb);
>>> -		return -EINVAL;
>>> -	}
>>> -
>>> -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
>>> -
>>> -	thermal_event->orig = tz->id;
>>> -	thermal_event->event = event;
>>> -
>>> -	/* send multicast genetlink message */
>>> -	result = genlmsg_end(skb, msg_header);
>>> -	if (result < 0) {
>>> -		nlmsg_free(skb);
>>> -		return result;
>>> -	}
>>> -
>>> -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
>>> -	if (result)
>>> -		dev_err(&tz->device, "Failed to send netlink event:%d", result);
>>> -
>>> -	return result;
>>> -}
>>> -EXPORT_SYMBOL(thermal_generate_netlink_event);
>>> -
>>> -static int genetlink_init(void)
>>> -{
>>> -	int result;
>>> -
>>> -	result = genl_register_family(&thermal_event_genl_family);
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	result = genl_register_mc_group(&thermal_event_genl_family,
>>> -					&thermal_event_mcgrp);
>>> -	if (result)
>>> -		genl_unregister_family(&thermal_event_genl_family);
>>> -	return result;
>>> -}
>>> -
>>> -static void genetlink_exit(void)
>>> -{
>>> -	genl_unregister_family(&thermal_event_genl_family);
>>> -}
>>> -#else /* !CONFIG_NET */
>>> -static inline int genetlink_init(void) { return 0; }
>>> -static inline void genetlink_exit(void) {}
>>> -#endif /* !CONFIG_NET */
>>> -
>>> -static int __init thermal_init(void)
>>> -{
>>> -	int result = 0;
>>> -
>>> -	result = class_register(&thermal_class);
>>> -	if (result) {
>>> -		idr_destroy(&thermal_tz_idr);
>>> -		idr_destroy(&thermal_cdev_idr);
>>> -		mutex_destroy(&thermal_idr_lock);
>>> -		mutex_destroy(&thermal_list_lock);
>>> -		return result;
>>> -	}
>>> -	result = genetlink_init();
>>> -	return result;
>>> -}
>>> -
>>> -static void __exit thermal_exit(void)
>>> -{
>>> -	class_unregister(&thermal_class);
>>> -	idr_destroy(&thermal_tz_idr);
>>> -	idr_destroy(&thermal_cdev_idr);
>>> -	mutex_destroy(&thermal_idr_lock);
>>> -	mutex_destroy(&thermal_list_lock);
>>> -	genetlink_exit();
>>> -}
>>> -
>>> -fs_initcall(thermal_init);
>>> -module_exit(thermal_exit);
>>>
>>
>
>
>
>

RE: [RFC,1/5] Thermal: rename thermal_sys.c to thermal_core.c

[R, Durgadoss]

> -----Original Message-----
> From: Eduardo Valentin [mailto:eduardo.valentin@ti.com]
> Sent: Monday, April 01, 2013 6:14 PM
> To: Zhang, Rui
> Cc: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org;
> amit.daniel@samsung.com; R, Durgadoss; andi@lisas.de
> Subject: Re: [RFC,1/5] Thermal: rename thermal_sys.c to thermal_core.c
> 
> Hey Rui,
> 
> On 27-03-2013 22:40, Zhang Rui wrote:
> > On Tue, 2013-03-26 at 18:04 -0400, Eduardo Valentin wrote:
> >> Hi Rui,
> >>
> >> A side note:
> >> I'd really appreciate if you could copy on your patches on
> >> drivers/thermal/. I had some issues with TI server and got un subscribed
> >> from linux-pm. Now I will try to catch up any way,
> >>
> > sure.
> >
> >> Some comments.
> >>
> >> On 26-03-2013 12:26, Zhang Rui wrote:
> >>> No functional change in this patch.
> >>>
> >>
> >> Just a better description would also help on code version control.
> >>
> > will add it in V2.
> >
> >>> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> >>
> >> Apart from minor comments, I agreed with this change. So feel free to
> >> add my:
> >>
> >> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
> >>
> > thanks!
> >
> >>>
> >>> ---
> >>> drivers/thermal/Makefile       |    1 +
> >>>    drivers/thermal/thermal_core.c | 1888
> ++++++++++++++++++++++++++++++++++++++++
> >>>    drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
> >>
> >> When sending renames, use git format-patch --find-renames, it makes a
> >> better summary of what you have done, specially if you have changed
> >> something in the file while renaming.
> >>
> > a useful tip. thanks!
> >>>    3 files changed, 1889 insertions(+), 1888 deletions(-)
> >>>    create mode 100644 drivers/thermal/thermal_core.c
> >>>    delete mode 100644 drivers/thermal/thermal_sys.c
> >>>
> >>> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
> >>> index d3a2b38..b2009bd 100644
> >>> --- a/drivers/thermal/Makefile
> >>> +++ b/drivers/thermal/Makefile
> >>> @@ -3,6 +3,7 @@
> >>>    #
> >>>
> >>>    obj-$(CONFIG_THERMAL)		+= thermal_sys.o
> >>
> >> I know this is for fixing the annoying bug with fan max speed. But while
> >> still here, do you think 'thermal_sys' is a good name for thermal
> >> framework driver? Maybe just 'thermal' would suffice?
> >>
> > as I said, there is already a thermal driver, aka,
> > driver/acpi/thermal.c.
> >
> 
> In fact there is. On the other hand, it does not imply that this naming
> convention is correct, right?
> 
> Unless you have a strong requirement to name these drivers the way it
> is, I'd suggest to take the opportunity to rename them.
> drivers/acpi/thermal.c could be named 'thermal-acpi.ko', if this does
> not violate any ACPI requirements. While this driver,
> drivers/thermal/thermal_sys.c, would be named only 'thermal.ko'.

Yes, I was also thinking of the same thing.
Can we do this Rui ?

Thanks,
Durga

> 
> 
> > thanks,
> 
> Regards,
> 
> Ed
> 
> > rui
> >>> +thermal_sys-y			+= thermal_core.o
> >>>
> >>>    # governors
> >>>    obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
> >>> diff --git a/drivers/thermal/thermal_core.c
> b/drivers/thermal/thermal_core.c
> >>> new file mode 100644
> >>> index 0000000..5b7863a
> >>> --- /dev/null
> >>> +++ b/drivers/thermal/thermal_core.c
> >>> @@ -0,0 +1,1888 @@
> >>> +/*
> >>> + *  thermal.c - Generic Thermal Management Sysfs support.
> >>> + *
> >>> + *  Copyright (C) 2008 Intel Corp
> >>> + *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> >>> + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> >>> + *
> >>> + *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> >>> + *
> >>> + *  This program is free software; you can redistribute it and/or modify
> >>> + *  it under the terms of the GNU General Public License as published
> by
> >>> + *  the Free Software Foundation; version 2 of the License.
> >>> + *
> >>> + *  This program is distributed in the hope that it will be useful, but
> >>> + *  WITHOUT ANY WARRANTY; without even the implied warranty of
> >>> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
> the GNU
> >>> + *  General Public License for more details.
> >>> + *
> >>> + *  You should have received a copy of the GNU General Public License
> along
> >>> + *  with this program; if not, write to the Free Software Foundation,
> Inc.,
> >>> + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> >>> + *
> >>> + *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> >>> + */
> >>> +
> >>> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> >>> +
> >>> +#include <linux/module.h>
> >>> +#include <linux/device.h>
> >>> +#include <linux/err.h>
> >>> +#include <linux/slab.h>
> >>> +#include <linux/kdev_t.h>
> >>> +#include <linux/idr.h>
> >>> +#include <linux/thermal.h>
> >>> +#include <linux/reboot.h>
> >>> +#include <net/netlink.h>
> >>> +#include <net/genetlink.h>
> >>> +
> >>> +#include "thermal_core.h"
> >>> +
> >>> +MODULE_AUTHOR("Zhang Rui");
> >>> +MODULE_DESCRIPTION("Generic thermal management sysfs
> support");
> >>> +MODULE_LICENSE("GPL");
> >>> +
> >>> +static DEFINE_IDR(thermal_tz_idr);
> >>> +static DEFINE_IDR(thermal_cdev_idr);
> >>> +static DEFINE_MUTEX(thermal_idr_lock);
> >>> +
> >>> +static LIST_HEAD(thermal_tz_list);
> >>> +static LIST_HEAD(thermal_cdev_list);
> >>> +static LIST_HEAD(thermal_governor_list);
> >>> +
> >>> +static DEFINE_MUTEX(thermal_list_lock);
> >>> +static DEFINE_MUTEX(thermal_governor_lock);
> >>> +
> >>> +static struct thermal_governor *__find_governor(const char *name)
> >>> +{
> >>> +	struct thermal_governor *pos;
> >>> +
> >>> +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> >>> +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> >>> +			return pos;
> >>> +
> >>> +	return NULL;
> >>> +}
> >>> +
> >>> +int thermal_register_governor(struct thermal_governor *governor)
> >>> +{
> >>> +	int err;
> >>> +	const char *name;
> >>> +	struct thermal_zone_device *pos;
> >>> +
> >>> +	if (!governor)
> >>> +		return -EINVAL;
> >>> +
> >>> +	mutex_lock(&thermal_governor_lock);
> >>> +
> >>> +	err = -EBUSY;
> >>> +	if (__find_governor(governor->name) == NULL) {
> >>> +		err = 0;
> >>> +		list_add(&governor->governor_list,
> &thermal_governor_list);
> >>> +	}
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +
> >>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> >>> +		if (pos->governor)
> >>> +			continue;
> >>> +		if (pos->tzp)
> >>> +			name = pos->tzp->governor_name;
> >>> +		else
> >>> +			name = DEFAULT_THERMAL_GOVERNOR;
> >>> +		if (!strnicmp(name, governor->name,
> THERMAL_NAME_LENGTH))
> >>> +			pos->governor = governor;
> >>> +	}
> >>> +
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +	mutex_unlock(&thermal_governor_lock);
> >>> +
> >>> +	return err;
> >>> +}
> >>> +EXPORT_SYMBOL_GPL(thermal_register_governor);
> >>> +
> >>> +void thermal_unregister_governor(struct thermal_governor
> *governor)
> >>> +{
> >>> +	struct thermal_zone_device *pos;
> >>> +
> >>> +	if (!governor)
> >>> +		return;
> >>> +
> >>> +	mutex_lock(&thermal_governor_lock);
> >>> +
> >>> +	if (__find_governor(governor->name) == NULL)
> >>> +		goto exit;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +
> >>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> >>> +		if (!strnicmp(pos->governor->name, governor->name,
> >>> +						THERMAL_NAME_LENGTH))
> >>> +			pos->governor = NULL;
> >>> +	}
> >>> +
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +	list_del(&governor->governor_list);
> >>> +exit:
> >>> +	mutex_unlock(&thermal_governor_lock);
> >>> +	return;
> >>> +}
> >>> +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> >>> +
> >>> +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> >>> +{
> >>> +	int ret;
> >>> +
> >>> +	if (lock)
> >>> +		mutex_lock(lock);
> >>> +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> >>> +	if (lock)
> >>> +		mutex_unlock(lock);
> >>> +	if (unlikely(ret < 0))
> >>> +		return ret;
> >>> +	*id = ret;
> >>> +	return 0;
> >>> +}
> >>> +
> >>> +static void release_idr(struct idr *idr, struct mutex *lock, int id)
> >>> +{
> >>> +	if (lock)
> >>> +		mutex_lock(lock);
> >>> +	idr_remove(idr, id);
> >>> +	if (lock)
> >>> +		mutex_unlock(lock);
> >>> +}
> >>> +
> >>> +int get_tz_trend(struct thermal_zone_device *tz, int trip)
> >>> +{
> >>> +	enum thermal_trend trend;
> >>> +
> >>> +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> >>> +		if (tz->temperature > tz->last_temperature)
> >>> +			trend = THERMAL_TREND_RAISING;
> >>> +		else if (tz->temperature < tz->last_temperature)
> >>> +			trend = THERMAL_TREND_DROPPING;
> >>> +		else
> >>> +			trend = THERMAL_TREND_STABLE;
> >>> +	}
> >>> +
> >>> +	return trend;
> >>> +}
> >>> +EXPORT_SYMBOL(get_tz_trend);
> >>> +
> >>> +struct thermal_instance *get_thermal_instance(struct
> thermal_zone_device *tz,
> >>> +			struct thermal_cooling_device *cdev, int trip)
> >>> +{
> >>> +	struct thermal_instance *pos = NULL;
> >>> +	struct thermal_instance *target_instance = NULL;
> >>> +
> >>> +	mutex_lock(&tz->lock);
> >>> +	mutex_lock(&cdev->lock);
> >>> +
> >>> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> >>> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> >>> +			target_instance = pos;
> >>> +			break;
> >>> +		}
> >>> +	}
> >>> +
> >>> +	mutex_unlock(&cdev->lock);
> >>> +	mutex_unlock(&tz->lock);
> >>> +
> >>> +	return target_instance;
> >>> +}
> >>> +EXPORT_SYMBOL(get_thermal_instance);
> >>> +
> >>> +static void print_bind_err_msg(struct thermal_zone_device *tz,
> >>> +			struct thermal_cooling_device *cdev, int ret)
> >>> +{
> >>> +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> >>> +				tz->type, cdev->type, ret);
> >>> +}
> >>> +
> >>> +static void __bind(struct thermal_zone_device *tz, int mask,
> >>> +			struct thermal_cooling_device *cdev)
> >>> +{
> >>> +	int i, ret;
> >>> +
> >>> +	for (i = 0; i < tz->trips; i++) {
> >>> +		if (mask & (1 << i)) {
> >>> +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> >>> +					THERMAL_NO_LIMIT,
> THERMAL_NO_LIMIT);
> >>> +			if (ret)
> >>> +				print_bind_err_msg(tz, cdev, ret);
> >>> +		}
> >>> +	}
> >>> +}
> >>> +
> >>> +static void __unbind(struct thermal_zone_device *tz, int mask,
> >>> +			struct thermal_cooling_device *cdev)
> >>> +{
> >>> +	int i;
> >>> +
> >>> +	for (i = 0; i < tz->trips; i++)
> >>> +		if (mask & (1 << i))
> >>> +			thermal_zone_unbind_cooling_device(tz, i, cdev);
> >>> +}
> >>> +
> >>> +static void bind_cdev(struct thermal_cooling_device *cdev)
> >>> +{
> >>> +	int i, ret;
> >>> +	const struct thermal_zone_params *tzp;
> >>> +	struct thermal_zone_device *pos = NULL;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +
> >>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
> >>> +		if (!pos->tzp && !pos->ops->bind)
> >>> +			continue;
> >>> +
> >>> +		if (!pos->tzp && pos->ops->bind) {
> >>> +			ret = pos->ops->bind(pos, cdev);
> >>> +			if (ret)
> >>> +				print_bind_err_msg(pos, cdev, ret);
> >>> +		}
> >>> +
> >>> +		tzp = pos->tzp;
> >>> +		if (!tzp || !tzp->tbp)
> >>> +			continue;
> >>> +
> >>> +		for (i = 0; i < tzp->num_tbps; i++) {
> >>> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> >>> +				continue;
> >>> +			if (tzp->tbp[i].match(pos, cdev))
> >>> +				continue;
> >>> +			tzp->tbp[i].cdev = cdev;
> >>> +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> >>> +		}
> >>> +	}
> >>> +
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +}
> >>> +
> >>> +static void bind_tz(struct thermal_zone_device *tz)
> >>> +{
> >>> +	int i, ret;
> >>> +	struct thermal_cooling_device *pos = NULL;
> >>> +	const struct thermal_zone_params *tzp = tz->tzp;
> >>> +
> >>> +	if (!tzp && !tz->ops->bind)
> >>> +		return;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +
> >>> +	/* If there is no platform data, try to use ops->bind */
> >>> +	if (!tzp && tz->ops->bind) {
> >>> +		list_for_each_entry(pos, &thermal_cdev_list, node) {
> >>> +			ret = tz->ops->bind(tz, pos);
> >>> +			if (ret)
> >>> +				print_bind_err_msg(tz, pos, ret);
> >>> +		}
> >>> +		goto exit;
> >>> +	}
> >>> +
> >>> +	if (!tzp || !tzp->tbp)
> >>> +		goto exit;
> >>> +
> >>> +	list_for_each_entry(pos, &thermal_cdev_list, node) {
> >>> +		for (i = 0; i < tzp->num_tbps; i++) {
> >>> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> >>> +				continue;
> >>> +			if (tzp->tbp[i].match(tz, pos))
> >>> +				continue;
> >>> +			tzp->tbp[i].cdev = pos;
> >>> +			__bind(tz, tzp->tbp[i].trip_mask, pos);
> >>> +		}
> >>> +	}
> >>> +exit:
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +}
> >>> +
> >>> +static void thermal_zone_device_set_polling(struct
> thermal_zone_device *tz,
> >>> +					    int delay)
> >>> +{
> >>> +	if (delay > 1000)
> >>> +		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> >>> +				 round_jiffies(msecs_to_jiffies(delay)));
> >>> +	else if (delay)
> >>> +		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> >>> +				 msecs_to_jiffies(delay));
> >>> +	else
> >>> +		cancel_delayed_work(&tz->poll_queue);
> >>> +}
> >>> +
> >>> +static void monitor_thermal_zone(struct thermal_zone_device *tz)
> >>> +{
> >>> +	mutex_lock(&tz->lock);
> >>> +
> >>> +	if (tz->passive)
> >>> +		thermal_zone_device_set_polling(tz, tz->passive_delay);
> >>> +	else if (tz->polling_delay)
> >>> +		thermal_zone_device_set_polling(tz, tz->polling_delay);
> >>> +	else
> >>> +		thermal_zone_device_set_polling(tz, 0);
> >>> +
> >>> +	mutex_unlock(&tz->lock);
> >>> +}
> >>> +
> >>> +static void handle_non_critical_trips(struct thermal_zone_device *tz,
> >>> +			int trip, enum thermal_trip_type trip_type)
> >>> +{
> >>> +	if (tz->governor)
> >>> +		tz->governor->throttle(tz, trip);
> >>> +}
> >>> +
> >>> +static void handle_critical_trips(struct thermal_zone_device *tz,
> >>> +				int trip, enum thermal_trip_type trip_type)
> >>> +{
> >>> +	long trip_temp;
> >>> +
> >>> +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> >>> +
> >>> +	/* If we have not crossed the trip_temp, we do not care. */
> >>> +	if (tz->temperature < trip_temp)
> >>> +		return;
> >>> +
> >>> +	if (tz->ops->notify)
> >>> +		tz->ops->notify(tz, trip, trip_type);
> >>> +
> >>> +	if (trip_type == THERMAL_TRIP_CRITICAL) {
> >>> +		dev_emerg(&tz->device,
> >>> +			  "critical temperature reached(%d C),shutting
> down\n",
> >>> +			  tz->temperature / 1000);
> >>> +		orderly_poweroff(true);
> >>> +	}
> >>> +}
> >>> +
> >>> +static void handle_thermal_trip(struct thermal_zone_device *tz, int
> trip)
> >>> +{
> >>> +	enum thermal_trip_type type;
> >>> +
> >>> +	tz->ops->get_trip_type(tz, trip, &type);
> >>> +
> >>> +	if (type == THERMAL_TRIP_CRITICAL || type ==
> THERMAL_TRIP_HOT)
> >>> +		handle_critical_trips(tz, trip, type);
> >>> +	else
> >>> +		handle_non_critical_trips(tz, trip, type);
> >>> +	/*
> >>> +	 * Alright, we handled this trip successfully.
> >>> +	 * So, start monitoring again.
> >>> +	 */
> >>> +	monitor_thermal_zone(tz);
> >>> +}
> >>> +
> >>> +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> >>> +				unsigned long *temp)
> >>> +{
> >>> +	int ret = 0;
> >>> +#ifdef CONFIG_THERMAL_EMULATION
> >>> +	int count;
> >>> +	unsigned long crit_temp = -1UL;
> >>> +	enum thermal_trip_type type;
> >>> +#endif
> >>> +
> >>> +	mutex_lock(&tz->lock);
> >>> +
> >>> +	ret = tz->ops->get_temp(tz, temp);
> >>> +#ifdef CONFIG_THERMAL_EMULATION
> >>> +	if (!tz->emul_temperature)
> >>> +		goto skip_emul;
> >>> +
> >>> +	for (count = 0; count < tz->trips; count++) {
> >>> +		ret = tz->ops->get_trip_type(tz, count, &type);
> >>> +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> >>> +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> >>> +			break;
> >>> +		}
> >>> +	}
> >>> +
> >>> +	if (ret)
> >>> +		goto skip_emul;
> >>> +
> >>> +	if (*temp < crit_temp)
> >>> +		*temp = tz->emul_temperature;
> >>> +skip_emul:
> >>> +#endif
> >>> +	mutex_unlock(&tz->lock);
> >>> +	return ret;
> >>> +}
> >>> +
> >>> +static void update_temperature(struct thermal_zone_device *tz)
> >>> +{
> >>> +	long temp;
> >>> +	int ret;
> >>> +
> >>> +	ret = thermal_zone_get_temp(tz, &temp);
> >>> +	if (ret) {
> >>> +		dev_warn(&tz->device, "failed to read out thermal zone
> %d\n",
> >>> +			 tz->id);
> >>> +		return;
> >>> +	}
> >>> +
> >>> +	mutex_lock(&tz->lock);
> >>> +	tz->last_temperature = tz->temperature;
> >>> +	tz->temperature = temp;
> >>> +	mutex_unlock(&tz->lock);
> >>> +}
> >>> +
> >>> +void thermal_zone_device_update(struct thermal_zone_device *tz)
> >>> +{
> >>> +	int count;
> >>> +
> >>> +	update_temperature(tz);
> >>> +
> >>> +	for (count = 0; count < tz->trips; count++)
> >>> +		handle_thermal_trip(tz, count);
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_zone_device_update);
> >>> +
> >>> +static void thermal_zone_device_check(struct work_struct *work)
> >>> +{
> >>> +	struct thermal_zone_device *tz = container_of(work, struct
> >>> +						      thermal_zone_device,
> >>> +						      poll_queue.work);
> >>> +	thermal_zone_device_update(tz);
> >>> +}
> >>> +
> >>> +/* sys I/F for thermal zone */
> >>> +
> >>> +#define to_thermal_zone(_dev) \
> >>> +	container_of(_dev, struct thermal_zone_device, device)
> >>> +
> >>> +static ssize_t
> >>> +type_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +
> >>> +	return sprintf(buf, "%s\n", tz->type);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +temp_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	long temperature;
> >>> +	int ret;
> >>> +
> >>> +	ret = thermal_zone_get_temp(tz, &temperature);
> >>> +
> >>> +	if (ret)
> >>> +		return ret;
> >>> +
> >>> +	return sprintf(buf, "%ld\n", temperature);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +mode_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	enum thermal_device_mode mode;
> >>> +	int result;
> >>> +
> >>> +	if (!tz->ops->get_mode)
> >>> +		return -EPERM;
> >>> +
> >>> +	result = tz->ops->get_mode(tz, &mode);
> >>> +	if (result)
> >>> +		return result;
> >>> +
> >>> +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ?
> "enabled"
> >>> +		       : "disabled");
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +mode_store(struct device *dev, struct device_attribute *attr,
> >>> +	   const char *buf, size_t count)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	int result;
> >>> +
> >>> +	if (!tz->ops->set_mode)
> >>> +		return -EPERM;
> >>> +
> >>> +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> >>> +		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_ENABLED);
> >>> +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> >>> +		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_DISABLED);
> >>> +	else
> >>> +		result = -EINVAL;
> >>> +
> >>> +	if (result)
> >>> +		return result;
> >>> +
> >>> +	return count;
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +trip_point_type_show(struct device *dev, struct device_attribute
> *attr,
> >>> +		     char *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	enum thermal_trip_type type;
> >>> +	int trip, result;
> >>> +
> >>> +	if (!tz->ops->get_trip_type)
> >>> +		return -EPERM;
> >>> +
> >>> +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> >>> +		return -EINVAL;
> >>> +
> >>> +	result = tz->ops->get_trip_type(tz, trip, &type);
> >>> +	if (result)
> >>> +		return result;
> >>> +
> >>> +	switch (type) {
> >>> +	case THERMAL_TRIP_CRITICAL:
> >>> +		return sprintf(buf, "critical\n");
> >>> +	case THERMAL_TRIP_HOT:
> >>> +		return sprintf(buf, "hot\n");
> >>> +	case THERMAL_TRIP_PASSIVE:
> >>> +		return sprintf(buf, "passive\n");
> >>> +	case THERMAL_TRIP_ACTIVE:
> >>> +		return sprintf(buf, "active\n");
> >>> +	default:
> >>> +		return sprintf(buf, "unknown\n");
> >>> +	}
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +trip_point_temp_store(struct device *dev, struct device_attribute
> *attr,
> >>> +		     const char *buf, size_t count)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	int trip, ret;
> >>> +	unsigned long temperature;
> >>> +
> >>> +	if (!tz->ops->set_trip_temp)
> >>> +		return -EPERM;
> >>> +
> >>> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> >>> +		return -EINVAL;
> >>> +
> >>> +	if (kstrtoul(buf, 10, &temperature))
> >>> +		return -EINVAL;
> >>> +
> >>> +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> >>> +
> >>> +	return ret ? ret : count;
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +trip_point_temp_show(struct device *dev, struct device_attribute
> *attr,
> >>> +		     char *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	int trip, ret;
> >>> +	long temperature;
> >>> +
> >>> +	if (!tz->ops->get_trip_temp)
> >>> +		return -EPERM;
> >>> +
> >>> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> >>> +		return -EINVAL;
> >>> +
> >>> +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> >>> +
> >>> +	if (ret)
> >>> +		return ret;
> >>> +
> >>> +	return sprintf(buf, "%ld\n", temperature);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +trip_point_hyst_store(struct device *dev, struct device_attribute
> *attr,
> >>> +			const char *buf, size_t count)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	int trip, ret;
> >>> +	unsigned long temperature;
> >>> +
> >>> +	if (!tz->ops->set_trip_hyst)
> >>> +		return -EPERM;
> >>> +
> >>> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> >>> +		return -EINVAL;
> >>> +
> >>> +	if (kstrtoul(buf, 10, &temperature))
> >>> +		return -EINVAL;
> >>> +
> >>> +	/*
> >>> +	 * We are not doing any check on the 'temperature' value
> >>> +	 * here. The driver implementing 'set_trip_hyst' has to
> >>> +	 * take care of this.
> >>> +	 */
> >>> +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> >>> +
> >>> +	return ret ? ret : count;
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +trip_point_hyst_show(struct device *dev, struct device_attribute
> *attr,
> >>> +			char *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	int trip, ret;
> >>> +	unsigned long temperature;
> >>> +
> >>> +	if (!tz->ops->get_trip_hyst)
> >>> +		return -EPERM;
> >>> +
> >>> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> >>> +		return -EINVAL;
> >>> +
> >>> +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> >>> +
> >>> +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +passive_store(struct device *dev, struct device_attribute *attr,
> >>> +		    const char *buf, size_t count)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	struct thermal_cooling_device *cdev = NULL;
> >>> +	int state;
> >>> +
> >>> +	if (!sscanf(buf, "%d\n", &state))
> >>> +		return -EINVAL;
> >>> +
> >>> +	/* sanity check: values below 1000 millicelcius don't make sense
> >>> +	 * and can cause the system to go into a thermal heart attack
> >>> +	 */
> >>> +	if (state && state < 1000)
> >>> +		return -EINVAL;
> >>> +
> >>> +	if (state && !tz->forced_passive) {
> >>> +		mutex_lock(&thermal_list_lock);
> >>> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> >>> +			if (!strncmp("Processor", cdev->type,
> >>> +				     sizeof("Processor")))
> >>> +				thermal_zone_bind_cooling_device(tz,
> >>> +						THERMAL_TRIPS_NONE,
> cdev,
> >>> +						THERMAL_NO_LIMIT,
> >>> +						THERMAL_NO_LIMIT);
> >>> +		}
> >>> +		mutex_unlock(&thermal_list_lock);
> >>> +		if (!tz->passive_delay)
> >>> +			tz->passive_delay = 1000;
> >>> +	} else if (!state && tz->forced_passive) {
> >>> +		mutex_lock(&thermal_list_lock);
> >>> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> >>> +			if (!strncmp("Processor", cdev->type,
> >>> +				     sizeof("Processor")))
> >>> +				thermal_zone_unbind_cooling_device(tz,
> >>> +
> THERMAL_TRIPS_NONE,
> >>> +								   cdev);
> >>> +		}
> >>> +		mutex_unlock(&thermal_list_lock);
> >>> +		tz->passive_delay = 0;
> >>> +	}
> >>> +
> >>> +	tz->forced_passive = state;
> >>> +
> >>> +	thermal_zone_device_update(tz);
> >>> +
> >>> +	return count;
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +passive_show(struct device *dev, struct device_attribute *attr,
> >>> +		   char *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +
> >>> +	return sprintf(buf, "%d\n", tz->forced_passive);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +policy_store(struct device *dev, struct device_attribute *attr,
> >>> +		    const char *buf, size_t count)
> >>> +{
> >>> +	int ret = -EINVAL;
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	struct thermal_governor *gov;
> >>> +
> >>> +	mutex_lock(&thermal_governor_lock);
> >>> +
> >>> +	gov = __find_governor(buf);
> >>> +	if (!gov)
> >>> +		goto exit;
> >>> +
> >>> +	tz->governor = gov;
> >>> +	ret = count;
> >>> +
> >>> +exit:
> >>> +	mutex_unlock(&thermal_governor_lock);
> >>> +	return ret;
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +policy_show(struct device *dev, struct device_attribute *devattr, char
> *buf)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +
> >>> +	return sprintf(buf, "%s\n", tz->governor->name);
> >>> +}
> >>> +
> >>> +#ifdef CONFIG_THERMAL_EMULATION
> >>> +static ssize_t
> >>> +emul_temp_store(struct device *dev, struct device_attribute *attr,
> >>> +		     const char *buf, size_t count)
> >>> +{
> >>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> +	int ret = 0;
> >>> +	unsigned long temperature;
> >>> +
> >>> +	if (kstrtoul(buf, 10, &temperature))
> >>> +		return -EINVAL;
> >>> +
> >>> +	if (!tz->ops->set_emul_temp) {
> >>> +		mutex_lock(&tz->lock);
> >>> +		tz->emul_temperature = temperature;
> >>> +		mutex_unlock(&tz->lock);
> >>> +	} else {
> >>> +		ret = tz->ops->set_emul_temp(tz, temperature);
> >>> +	}
> >>> +
> >>> +	return ret ? ret : count;
> >>> +}
> >>> +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> >>> +#endif/*CONFIG_THERMAL_EMULATION*/
> >>> +
> >>> +static DEVICE_ATTR(type, 0444, type_show, NULL);
> >>> +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> >>> +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> >>> +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> passive_store);
> >>> +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> policy_store);
> >>> +
> >>> +/* sys I/F for cooling device */
> >>> +#define to_cooling_device(_dev)	\
> >>> +	container_of(_dev, struct thermal_cooling_device, device)
> >>> +
> >>> +static ssize_t
> >>> +thermal_cooling_device_type_show(struct device *dev,
> >>> +				 struct device_attribute *attr, char *buf)
> >>> +{
> >>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> +
> >>> +	return sprintf(buf, "%s\n", cdev->type);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +thermal_cooling_device_max_state_show(struct device *dev,
> >>> +				      struct device_attribute *attr, char *buf)
> >>> +{
> >>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> +	unsigned long state;
> >>> +	int ret;
> >>> +
> >>> +	ret = cdev->ops->get_max_state(cdev, &state);
> >>> +	if (ret)
> >>> +		return ret;
> >>> +	return sprintf(buf, "%ld\n", state);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +thermal_cooling_device_cur_state_show(struct device *dev,
> >>> +				      struct device_attribute *attr, char *buf)
> >>> +{
> >>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> +	unsigned long state;
> >>> +	int ret;
> >>> +
> >>> +	ret = cdev->ops->get_cur_state(cdev, &state);
> >>> +	if (ret)
> >>> +		return ret;
> >>> +	return sprintf(buf, "%ld\n", state);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +thermal_cooling_device_cur_state_store(struct device *dev,
> >>> +				       struct device_attribute *attr,
> >>> +				       const char *buf, size_t count)
> >>> +{
> >>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> +	unsigned long state;
> >>> +	int result;
> >>> +
> >>> +	if (!sscanf(buf, "%ld\n", &state))
> >>> +		return -EINVAL;
> >>> +
> >>> +	if ((long)state < 0)
> >>> +		return -EINVAL;
> >>> +
> >>> +	result = cdev->ops->set_cur_state(cdev, state);
> >>> +	if (result)
> >>> +		return result;
> >>> +	return count;
> >>> +}
> >>> +
> >>> +static struct device_attribute dev_attr_cdev_type =
> >>> +__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> >>> +static DEVICE_ATTR(max_state, 0444,
> >>> +		   thermal_cooling_device_max_state_show, NULL);
> >>> +static DEVICE_ATTR(cur_state, 0644,
> >>> +		   thermal_cooling_device_cur_state_show,
> >>> +		   thermal_cooling_device_cur_state_store);
> >>> +
> >>> +static ssize_t
> >>> +thermal_cooling_device_trip_point_show(struct device *dev,
> >>> +				       struct device_attribute *attr, char *buf)
> >>> +{
> >>> +	struct thermal_instance *instance;
> >>> +
> >>> +	instance =
> >>> +	    container_of(attr, struct thermal_instance, attr);
> >>> +
> >>> +	if (instance->trip == THERMAL_TRIPS_NONE)
> >>> +		return sprintf(buf, "-1\n");
> >>> +	else
> >>> +		return sprintf(buf, "%d\n", instance->trip);
> >>> +}
> >>> +
> >>> +/* Device management */
> >>> +
> >>> +#if defined(CONFIG_THERMAL_HWMON)
> >>> +
> >>> +/* hwmon sys I/F */
> >>> +#include <linux/hwmon.h>
> >>> +
> >>> +/* thermal zone devices with the same type share one hwmon device
> */
> >>> +struct thermal_hwmon_device {
> >>> +	char type[THERMAL_NAME_LENGTH];
> >>> +	struct device *device;
> >>> +	int count;
> >>> +	struct list_head tz_list;
> >>> +	struct list_head node;
> >>> +};
> >>> +
> >>> +struct thermal_hwmon_attr {
> >>> +	struct device_attribute attr;
> >>> +	char name[16];
> >>> +};
> >>> +
> >>> +/* one temperature input for each thermal zone */
> >>> +struct thermal_hwmon_temp {
> >>> +	struct list_head hwmon_node;
> >>> +	struct thermal_zone_device *tz;
> >>> +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> >>> +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> >>> +};
> >>> +
> >>> +static LIST_HEAD(thermal_hwmon_list);
> >>> +
> >>> +static ssize_t
> >>> +name_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> +{
> >>> +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> >>> +	return sprintf(buf, "%s\n", hwmon->type);
> >>> +}
> >>> +static DEVICE_ATTR(name, 0444, name_show, NULL);
> >>> +
> >>> +static ssize_t
> >>> +temp_input_show(struct device *dev, struct device_attribute *attr,
> char *buf)
> >>> +{
> >>> +	long temperature;
> >>> +	int ret;
> >>> +	struct thermal_hwmon_attr *hwmon_attr
> >>> +			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> >>> +	struct thermal_hwmon_temp *temp
> >>> +			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> >>> +				       temp_input);
> >>> +	struct thermal_zone_device *tz = temp->tz;
> >>> +
> >>> +	ret = thermal_zone_get_temp(tz, &temperature);
> >>> +
> >>> +	if (ret)
> >>> +		return ret;
> >>> +
> >>> +	return sprintf(buf, "%ld\n", temperature);
> >>> +}
> >>> +
> >>> +static ssize_t
> >>> +temp_crit_show(struct device *dev, struct device_attribute *attr,
> >>> +		char *buf)
> >>> +{
> >>> +	struct thermal_hwmon_attr *hwmon_attr
> >>> +			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> >>> +	struct thermal_hwmon_temp *temp
> >>> +			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> >>> +				       temp_crit);
> >>> +	struct thermal_zone_device *tz = temp->tz;
> >>> +	long temperature;
> >>> +	int ret;
> >>> +
> >>> +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> >>> +	if (ret)
> >>> +		return ret;
> >>> +
> >>> +	return sprintf(buf, "%ld\n", temperature);
> >>> +}
> >>> +
> >>> +
> >>> +static struct thermal_hwmon_device *
> >>> +thermal_hwmon_lookup_by_type(const struct thermal_zone_device
> *tz)
> >>> +{
> >>> +	struct thermal_hwmon_device *hwmon;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> >>> +		if (!strcmp(hwmon->type, tz->type)) {
> >>> +			mutex_unlock(&thermal_list_lock);
> >>> +			return hwmon;
> >>> +		}
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	return NULL;
> >>> +}
> >>> +
> >>> +/* Find the temperature input matching a given thermal zone */
> >>> +static struct thermal_hwmon_temp *
> >>> +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device
> *hwmon,
> >>> +			  const struct thermal_zone_device *tz)
> >>> +{
> >>> +	struct thermal_hwmon_temp *temp;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> >>> +		if (temp->tz == tz) {
> >>> +			mutex_unlock(&thermal_list_lock);
> >>> +			return temp;
> >>> +		}
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	return NULL;
> >>> +}
> >>> +
> >>> +static int
> >>> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> +{
> >>> +	struct thermal_hwmon_device *hwmon;
> >>> +	struct thermal_hwmon_temp *temp;
> >>> +	int new_hwmon_device = 1;
> >>> +	int result;
> >>> +
> >>> +	hwmon = thermal_hwmon_lookup_by_type(tz);
> >>> +	if (hwmon) {
> >>> +		new_hwmon_device = 0;
> >>> +		goto register_sys_interface;
> >>> +	}
> >>> +
> >>> +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device),
> GFP_KERNEL);
> >>> +	if (!hwmon)
> >>> +		return -ENOMEM;
> >>> +
> >>> +	INIT_LIST_HEAD(&hwmon->tz_list);
> >>> +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> >>> +	hwmon->device = hwmon_device_register(NULL);
> >>> +	if (IS_ERR(hwmon->device)) {
> >>> +		result = PTR_ERR(hwmon->device);
> >>> +		goto free_mem;
> >>> +	}
> >>> +	dev_set_drvdata(hwmon->device, hwmon);
> >>> +	result = device_create_file(hwmon->device, &dev_attr_name);
> >>> +	if (result)
> >>> +		goto free_mem;
> >>> +
> >>> + register_sys_interface:
> >>> +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> >>> +	if (!temp) {
> >>> +		result = -ENOMEM;
> >>> +		goto unregister_name;
> >>> +	}
> >>> +
> >>> +	temp->tz = tz;
> >>> +	hwmon->count++;
> >>> +
> >>> +	snprintf(temp->temp_input.name, sizeof(temp-
> >temp_input.name),
> >>> +		 "temp%d_input", hwmon->count);
> >>> +	temp->temp_input.attr.attr.name = temp->temp_input.name;
> >>> +	temp->temp_input.attr.attr.mode = 0444;
> >>> +	temp->temp_input.attr.show = temp_input_show;
> >>> +	sysfs_attr_init(&temp->temp_input.attr.attr);
> >>> +	result = device_create_file(hwmon->device, &temp-
> >temp_input.attr);
> >>> +	if (result)
> >>> +		goto free_temp_mem;
> >>> +
> >>> +	if (tz->ops->get_crit_temp) {
> >>> +		unsigned long temperature;
> >>> +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> >>> +			snprintf(temp->temp_crit.name,
> >>> +				 sizeof(temp->temp_crit.name),
> >>> +				"temp%d_crit", hwmon->count);
> >>> +			temp->temp_crit.attr.attr.name = temp-
> >temp_crit.name;
> >>> +			temp->temp_crit.attr.attr.mode = 0444;
> >>> +			temp->temp_crit.attr.show = temp_crit_show;
> >>> +			sysfs_attr_init(&temp->temp_crit.attr.attr);
> >>> +			result = device_create_file(hwmon->device,
> >>> +						    &temp->temp_crit.attr);
> >>> +			if (result)
> >>> +				goto unregister_input;
> >>> +		}
> >>> +	}
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	if (new_hwmon_device)
> >>> +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> >>> +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	return 0;
> >>> +
> >>> + unregister_input:
> >>> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> >>> + free_temp_mem:
> >>> +	kfree(temp);
> >>> + unregister_name:
> >>> +	if (new_hwmon_device) {
> >>> +		device_remove_file(hwmon->device, &dev_attr_name);
> >>> +		hwmon_device_unregister(hwmon->device);
> >>> +	}
> >>> + free_mem:
> >>> +	if (new_hwmon_device)
> >>> +		kfree(hwmon);
> >>> +
> >>> +	return result;
> >>> +}
> >>> +
> >>> +static void
> >>> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> +{
> >>> +	struct thermal_hwmon_device *hwmon;
> >>> +	struct thermal_hwmon_temp *temp;
> >>> +
> >>> +	hwmon = thermal_hwmon_lookup_by_type(tz);
> >>> +	if (unlikely(!hwmon)) {
> >>> +		/* Should never happen... */
> >>> +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> >>> +		return;
> >>> +	}
> >>> +
> >>> +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> >>> +	if (unlikely(!temp)) {
> >>> +		/* Should never happen... */
> >>> +		dev_dbg(&tz->device, "temperature input lookup
> failed!\n");
> >>> +		return;
> >>> +	}
> >>> +
> >>> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
> >>> +	if (tz->ops->get_crit_temp)
> >>> +		device_remove_file(hwmon->device, &temp-
> >temp_crit.attr);
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_del(&temp->hwmon_node);
> >>> +	kfree(temp);
> >>> +	if (!list_empty(&hwmon->tz_list)) {
> >>> +		mutex_unlock(&thermal_list_lock);
> >>> +		return;
> >>> +	}
> >>> +	list_del(&hwmon->node);
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	device_remove_file(hwmon->device, &dev_attr_name);
> >>> +	hwmon_device_unregister(hwmon->device);
> >>> +	kfree(hwmon);
> >>> +}
> >>> +#else
> >>> +static int
> >>> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> +{
> >>> +	return 0;
> >>> +}
> >>> +
> >>> +static void
> >>> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> +{
> >>> +}
> >>> +#endif
> >>> +
> >>> +/**
> >>> + * thermal_zone_bind_cooling_device - bind a cooling device to a
> thermal zone
> >>> + * @tz:		thermal zone device
> >>> + * @trip:	indicates which trip point the cooling devices is
> >>> + *		associated with in this thermal zone.
> >>> + * @cdev:	thermal cooling device
> >>> + *
> >>> + * This function is usually called in the thermal zone device .bind
> callback.
> >>> + */
> >>> +int thermal_zone_bind_cooling_device(struct thermal_zone_device
> *tz,
> >>> +				     int trip,
> >>> +				     struct thermal_cooling_device *cdev,
> >>> +				     unsigned long upper, unsigned long lower)
> >>> +{
> >>> +	struct thermal_instance *dev;
> >>> +	struct thermal_instance *pos;
> >>> +	struct thermal_zone_device *pos1;
> >>> +	struct thermal_cooling_device *pos2;
> >>> +	unsigned long max_state;
> >>> +	int result;
> >>> +
> >>> +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> >>> +		return -EINVAL;
> >>> +
> >>> +	list_for_each_entry(pos1, &thermal_tz_list, node) {
> >>> +		if (pos1 == tz)
> >>> +			break;
> >>> +	}
> >>> +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> >>> +		if (pos2 == cdev)
> >>> +			break;
> >>> +	}
> >>> +
> >>> +	if (tz != pos1 || cdev != pos2)
> >>> +		return -EINVAL;
> >>> +
> >>> +	cdev->ops->get_max_state(cdev, &max_state);
> >>> +
> >>> +	/* lower default 0, upper default max_state */
> >>> +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> >>> +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> >>> +
> >>> +	if (lower > upper || upper > max_state)
> >>> +		return -EINVAL;
> >>> +
> >>> +	dev =
> >>> +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> >>> +	if (!dev)
> >>> +		return -ENOMEM;
> >>> +	dev->tz = tz;
> >>> +	dev->cdev = cdev;
> >>> +	dev->trip = trip;
> >>> +	dev->upper = upper;
> >>> +	dev->lower = lower;
> >>> +	dev->target = THERMAL_NO_TARGET;
> >>> +
> >>> +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> >>> +	if (result)
> >>> +		goto free_mem;
> >>> +
> >>> +	sprintf(dev->name, "cdev%d", dev->id);
> >>> +	result =
> >>> +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev-
> >name);
> >>> +	if (result)
> >>> +		goto release_idr;
> >>> +
> >>> +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> >>> +	sysfs_attr_init(&dev->attr.attr);
> >>> +	dev->attr.attr.name = dev->attr_name;
> >>> +	dev->attr.attr.mode = 0444;
> >>> +	dev->attr.show = thermal_cooling_device_trip_point_show;
> >>> +	result = device_create_file(&tz->device, &dev->attr);
> >>> +	if (result)
> >>> +		goto remove_symbol_link;
> >>> +
> >>> +	mutex_lock(&tz->lock);
> >>> +	mutex_lock(&cdev->lock);
> >>> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> >>> +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> >>> +		result = -EEXIST;
> >>> +		break;
> >>> +	}
> >>> +	if (!result) {
> >>> +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> >>> +		list_add_tail(&dev->cdev_node, &cdev-
> >thermal_instances);
> >>> +	}
> >>> +	mutex_unlock(&cdev->lock);
> >>> +	mutex_unlock(&tz->lock);
> >>> +
> >>> +	if (!result)
> >>> +		return 0;
> >>> +
> >>> +	device_remove_file(&tz->device, &dev->attr);
> >>> +remove_symbol_link:
> >>> +	sysfs_remove_link(&tz->device.kobj, dev->name);
> >>> +release_idr:
> >>> +	release_idr(&tz->idr, &tz->lock, dev->id);
> >>> +free_mem:
> >>> +	kfree(dev);
> >>> +	return result;
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> >>> +
> >>> +/**
> >>> + * thermal_zone_unbind_cooling_device - unbind a cooling device
> from a thermal zone
> >>> + * @tz:		thermal zone device
> >>> + * @trip:	indicates which trip point the cooling devices is
> >>> + *		associated with in this thermal zone.
> >>> + * @cdev:	thermal cooling device
> >>> + *
> >>> + * This function is usually called in the thermal zone device .unbind
> callback.
> >>> + */
> >>> +int thermal_zone_unbind_cooling_device(struct thermal_zone_device
> *tz,
> >>> +				       int trip,
> >>> +				       struct thermal_cooling_device *cdev)
> >>> +{
> >>> +	struct thermal_instance *pos, *next;
> >>> +
> >>> +	mutex_lock(&tz->lock);
> >>> +	mutex_lock(&cdev->lock);
> >>> +	list_for_each_entry_safe(pos, next, &tz->thermal_instances,
> tz_node) {
> >>> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> >>> +			list_del(&pos->tz_node);
> >>> +			list_del(&pos->cdev_node);
> >>> +			mutex_unlock(&cdev->lock);
> >>> +			mutex_unlock(&tz->lock);
> >>> +			goto unbind;
> >>> +		}
> >>> +	}
> >>> +	mutex_unlock(&cdev->lock);
> >>> +	mutex_unlock(&tz->lock);
> >>> +
> >>> +	return -ENODEV;
> >>> +
> >>> +unbind:
> >>> +	device_remove_file(&tz->device, &pos->attr);
> >>> +	sysfs_remove_link(&tz->device.kobj, pos->name);
> >>> +	release_idr(&tz->idr, &tz->lock, pos->id);
> >>> +	kfree(pos);
> >>> +	return 0;
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> >>> +
> >>> +static void thermal_release(struct device *dev)
> >>> +{
> >>> +	struct thermal_zone_device *tz;
> >>> +	struct thermal_cooling_device *cdev;
> >>> +
> >>> +	if (!strncmp(dev_name(dev), "thermal_zone",
> >>> +		     sizeof("thermal_zone") - 1)) {
> >>> +		tz = to_thermal_zone(dev);
> >>> +		kfree(tz);
> >>> +	} else {
> >>> +		cdev = to_cooling_device(dev);
> >>> +		kfree(cdev);
> >>> +	}
> >>> +}
> >>> +
> >>> +static struct class thermal_class = {
> >>> +	.name = "thermal",
> >>> +	.dev_release = thermal_release,
> >>> +};
> >>> +
> >>> +/**
> >>> + * thermal_cooling_device_register - register a new thermal cooling
> device
> >>> + * @type:	the thermal cooling device type.
> >>> + * @devdata:	device private data.
> >>> + * @ops:		standard thermal cooling devices callbacks.
> >>> + */
> >>> +struct thermal_cooling_device *
> >>> +thermal_cooling_device_register(char *type, void *devdata,
> >>> +				const struct thermal_cooling_device_ops
> *ops)
> >>> +{
> >>> +	struct thermal_cooling_device *cdev;
> >>> +	int result;
> >>> +
> >>> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> >>> +		return ERR_PTR(-EINVAL);
> >>> +
> >>> +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> >>> +	    !ops->set_cur_state)
> >>> +		return ERR_PTR(-EINVAL);
> >>> +
> >>> +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> >>> +	if (!cdev)
> >>> +		return ERR_PTR(-ENOMEM);
> >>> +
> >>> +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> >>> +	if (result) {
> >>> +		kfree(cdev);
> >>> +		return ERR_PTR(result);
> >>> +	}
> >>> +
> >>> +	strcpy(cdev->type, type ? : "");
> >>> +	mutex_init(&cdev->lock);
> >>> +	INIT_LIST_HEAD(&cdev->thermal_instances);
> >>> +	cdev->ops = ops;
> >>> +	cdev->updated = true;
> >>> +	cdev->device.class = &thermal_class;
> >>> +	cdev->devdata = devdata;
> >>> +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> >>> +	result = device_register(&cdev->device);
> >>> +	if (result) {
> >>> +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev-
> >id);
> >>> +		kfree(cdev);
> >>> +		return ERR_PTR(result);
> >>> +	}
> >>> +
> >>> +	/* sys I/F */
> >>> +	if (type) {
> >>> +		result = device_create_file(&cdev->device,
> &dev_attr_cdev_type);
> >>> +		if (result)
> >>> +			goto unregister;
> >>> +	}
> >>> +
> >>> +	result = device_create_file(&cdev->device, &dev_attr_max_state);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +
> >>> +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +
> >>> +	/* Add 'this' new cdev to the global cdev list */
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_add(&cdev->node, &thermal_cdev_list);
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	/* Update binding information for 'this' new cdev */
> >>> +	bind_cdev(cdev);
> >>> +
> >>> +	return cdev;
> >>> +
> >>> +unregister:
> >>> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> >>> +	device_unregister(&cdev->device);
> >>> +	return ERR_PTR(result);
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_cooling_device_register);
> >>> +
> >>> +/**
> >>> + * thermal_cooling_device_unregister - removes the registered
> thermal cooling device
> >>> + * @cdev:	the thermal cooling device to remove.
> >>> + *
> >>> + * thermal_cooling_device_unregister() must be called when the
> device is no
> >>> + * longer needed.
> >>> + */
> >>> +void thermal_cooling_device_unregister(struct
> thermal_cooling_device *cdev)
> >>> +{
> >>> +	int i;
> >>> +	const struct thermal_zone_params *tzp;
> >>> +	struct thermal_zone_device *tz;
> >>> +	struct thermal_cooling_device *pos = NULL;
> >>> +
> >>> +	if (!cdev)
> >>> +		return;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_for_each_entry(pos, &thermal_cdev_list, node)
> >>> +	    if (pos == cdev)
> >>> +		break;
> >>> +	if (pos != cdev) {
> >>> +		/* thermal cooling device not found */
> >>> +		mutex_unlock(&thermal_list_lock);
> >>> +		return;
> >>> +	}
> >>> +	list_del(&cdev->node);
> >>> +
> >>> +	/* Unbind all thermal zones associated with 'this' cdev */
> >>> +	list_for_each_entry(tz, &thermal_tz_list, node) {
> >>> +		if (tz->ops->unbind) {
> >>> +			tz->ops->unbind(tz, cdev);
> >>> +			continue;
> >>> +		}
> >>> +
> >>> +		if (!tz->tzp || !tz->tzp->tbp)
> >>> +			continue;
> >>> +
> >>> +		tzp = tz->tzp;
> >>> +		for (i = 0; i < tzp->num_tbps; i++) {
> >>> +			if (tzp->tbp[i].cdev == cdev) {
> >>> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> >>> +				tzp->tbp[i].cdev = NULL;
> >>> +			}
> >>> +		}
> >>> +	}
> >>> +
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	if (cdev->type[0])
> >>> +		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> >>> +	device_remove_file(&cdev->device, &dev_attr_max_state);
> >>> +	device_remove_file(&cdev->device, &dev_attr_cur_state);
> >>> +
> >>> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> >>> +	device_unregister(&cdev->device);
> >>> +	return;
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_cooling_device_unregister);
> >>> +
> >>> +void thermal_cdev_update(struct thermal_cooling_device *cdev)
> >>> +{
> >>> +	struct thermal_instance *instance;
> >>> +	unsigned long target = 0;
> >>> +
> >>> +	/* cooling device is updated*/
> >>> +	if (cdev->updated)
> >>> +		return;
> >>> +
> >>> +	mutex_lock(&cdev->lock);
> >>> +	/* Make sure cdev enters the deepest cooling state */
> >>> +	list_for_each_entry(instance, &cdev->thermal_instances,
> cdev_node) {
> >>> +		if (instance->target == THERMAL_NO_TARGET)
> >>> +			continue;
> >>> +		if (instance->target > target)
> >>> +			target = instance->target;
> >>> +	}
> >>> +	mutex_unlock(&cdev->lock);
> >>> +	cdev->ops->set_cur_state(cdev, target);
> >>> +	cdev->updated = true;
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_cdev_update);
> >>> +
> >>> +/**
> >>> + * notify_thermal_framework - Sensor drivers use this API to notify
> framework
> >>> + * @tz:		thermal zone device
> >>> + * @trip:	indicates which trip point has been crossed
> >>> + *
> >>> + * This function handles the trip events from sensor drivers. It starts
> >>> + * throttling the cooling devices according to the policy configured.
> >>> + * For CRITICAL and HOT trip points, this notifies the respective drivers,
> >>> + * and does actual throttling for other trip points i.e ACTIVE and
> PASSIVE.
> >>> + * The throttling policy is based on the configured platform data; if no
> >>> + * platform data is provided, this uses the step_wise throttling policy.
> >>> + */
> >>> +void notify_thermal_framework(struct thermal_zone_device *tz, int
> trip)
> >>> +{
> >>> +	handle_thermal_trip(tz, trip);
> >>> +}
> >>> +EXPORT_SYMBOL(notify_thermal_framework);
> >>> +
> >>> +/**
> >>> + * create_trip_attrs - create attributes for trip points
> >>> + * @tz:		the thermal zone device
> >>> + * @mask:	Writeable trip point bitmap.
> >>> + */
> >>> +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> >>> +{
> >>> +	int indx;
> >>> +	int size = sizeof(struct thermal_attr) * tz->trips;
> >>> +
> >>> +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> >>> +	if (!tz->trip_type_attrs)
> >>> +		return -ENOMEM;
> >>> +
> >>> +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> >>> +	if (!tz->trip_temp_attrs) {
> >>> +		kfree(tz->trip_type_attrs);
> >>> +		return -ENOMEM;
> >>> +	}
> >>> +
> >>> +	if (tz->ops->get_trip_hyst) {
> >>> +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> >>> +		if (!tz->trip_hyst_attrs) {
> >>> +			kfree(tz->trip_type_attrs);
> >>> +			kfree(tz->trip_temp_attrs);
> >>> +			return -ENOMEM;
> >>> +		}
> >>> +	}
> >>> +
> >>> +
> >>> +	for (indx = 0; indx < tz->trips; indx++) {
> >>> +		/* create trip type attribute */
> >>> +		snprintf(tz->trip_type_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> >>> +			 "trip_point_%d_type", indx);
> >>> +
> >>> +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> >>> +		tz->trip_type_attrs[indx].attr.attr.name =
> >>> +						tz-
> >trip_type_attrs[indx].name;
> >>> +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> >>> +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> >>> +
> >>> +		device_create_file(&tz->device,
> >>> +				   &tz->trip_type_attrs[indx].attr);
> >>> +
> >>> +		/* create trip temp attribute */
> >>> +		snprintf(tz->trip_temp_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> >>> +			 "trip_point_%d_temp", indx);
> >>> +
> >>> +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> >>> +		tz->trip_temp_attrs[indx].attr.attr.name =
> >>> +						tz-
> >trip_temp_attrs[indx].name;
> >>> +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> >>> +		tz->trip_temp_attrs[indx].attr.show =
> trip_point_temp_show;
> >>> +		if (mask & (1 << indx)) {
> >>> +			tz->trip_temp_attrs[indx].attr.attr.mode |=
> S_IWUSR;
> >>> +			tz->trip_temp_attrs[indx].attr.store =
> >>> +
> 	trip_point_temp_store;
> >>> +		}
> >>> +
> >>> +		device_create_file(&tz->device,
> >>> +				   &tz->trip_temp_attrs[indx].attr);
> >>> +
> >>> +		/* create Optional trip hyst attribute */
> >>> +		if (!tz->ops->get_trip_hyst)
> >>> +			continue;
> >>> +		snprintf(tz->trip_hyst_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> >>> +			 "trip_point_%d_hyst", indx);
> >>> +
> >>> +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> >>> +		tz->trip_hyst_attrs[indx].attr.attr.name =
> >>> +					tz->trip_hyst_attrs[indx].name;
> >>> +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> >>> +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> >>> +		if (tz->ops->set_trip_hyst) {
> >>> +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> >>> +			tz->trip_hyst_attrs[indx].attr.store =
> >>> +					trip_point_hyst_store;
> >>> +		}
> >>> +
> >>> +		device_create_file(&tz->device,
> >>> +				   &tz->trip_hyst_attrs[indx].attr);
> >>> +	}
> >>> +	return 0;
> >>> +}
> >>> +
> >>> +static void remove_trip_attrs(struct thermal_zone_device *tz)
> >>> +{
> >>> +	int indx;
> >>> +
> >>> +	for (indx = 0; indx < tz->trips; indx++) {
> >>> +		device_remove_file(&tz->device,
> >>> +				   &tz->trip_type_attrs[indx].attr);
> >>> +		device_remove_file(&tz->device,
> >>> +				   &tz->trip_temp_attrs[indx].attr);
> >>> +		if (tz->ops->get_trip_hyst)
> >>> +			device_remove_file(&tz->device,
> >>> +				  &tz->trip_hyst_attrs[indx].attr);
> >>> +	}
> >>> +	kfree(tz->trip_type_attrs);
> >>> +	kfree(tz->trip_temp_attrs);
> >>> +	kfree(tz->trip_hyst_attrs);
> >>> +}
> >>> +
> >>> +/**
> >>> + * thermal_zone_device_register - register a new thermal zone device
> >>> + * @type:	the thermal zone device type
> >>> + * @trips:	the number of trip points the thermal zone support
> >>> + * @mask:	a bit string indicating the writeablility of trip points
> >>> + * @devdata:	private device data
> >>> + * @ops:	standard thermal zone device callbacks
> >>> + * @tzp:	thermal zone platform parameters
> >>> + * @passive_delay: number of milliseconds to wait between polls when
> >>> + *		   performing passive cooling
> >>> + * @polling_delay: number of milliseconds to wait between polls when
> checking
> >>> + *		   whether trip points have been crossed (0 for interrupt
> >>> + *		   driven systems)
> >>> + *
> >>> + * thermal_zone_device_unregister() must be called when the device
> is no
> >>> + * longer needed. The passive cooling depends on the .get_trend()
> return value.
> >>> + */
> >>> +struct thermal_zone_device *thermal_zone_device_register(const
> char *type,
> >>> +	int trips, int mask, void *devdata,
> >>> +	const struct thermal_zone_device_ops *ops,
> >>> +	const struct thermal_zone_params *tzp,
> >>> +	int passive_delay, int polling_delay)
> >>> +{
> >>> +	struct thermal_zone_device *tz;
> >>> +	enum thermal_trip_type trip_type;
> >>> +	int result;
> >>> +	int count;
> >>> +	int passive = 0;
> >>> +
> >>> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> >>> +		return ERR_PTR(-EINVAL);
> >>> +
> >>> +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> >>> +		return ERR_PTR(-EINVAL);
> >>> +
> >>> +	if (!ops || !ops->get_temp)
> >>> +		return ERR_PTR(-EINVAL);
> >>> +
> >>> +	if (trips > 0 && !ops->get_trip_type)
> >>> +		return ERR_PTR(-EINVAL);
> >>> +
> >>> +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> >>> +	if (!tz)
> >>> +		return ERR_PTR(-ENOMEM);
> >>> +
> >>> +	INIT_LIST_HEAD(&tz->thermal_instances);
> >>> +	idr_init(&tz->idr);
> >>> +	mutex_init(&tz->lock);
> >>> +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> >>> +	if (result) {
> >>> +		kfree(tz);
> >>> +		return ERR_PTR(result);
> >>> +	}
> >>> +
> >>> +	strcpy(tz->type, type ? : "");
> >>> +	tz->ops = ops;
> >>> +	tz->tzp = tzp;
> >>> +	tz->device.class = &thermal_class;
> >>> +	tz->devdata = devdata;
> >>> +	tz->trips = trips;
> >>> +	tz->passive_delay = passive_delay;
> >>> +	tz->polling_delay = polling_delay;
> >>> +
> >>> +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> >>> +	result = device_register(&tz->device);
> >>> +	if (result) {
> >>> +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >>> +		kfree(tz);
> >>> +		return ERR_PTR(result);
> >>> +	}
> >>> +
> >>> +	/* sys I/F */
> >>> +	if (type) {
> >>> +		result = device_create_file(&tz->device, &dev_attr_type);
> >>> +		if (result)
> >>> +			goto unregister;
> >>> +	}
> >>> +
> >>> +	result = device_create_file(&tz->device, &dev_attr_temp);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +
> >>> +	if (ops->get_mode) {
> >>> +		result = device_create_file(&tz->device, &dev_attr_mode);
> >>> +		if (result)
> >>> +			goto unregister;
> >>> +	}
> >>> +
> >>> +	result = create_trip_attrs(tz, mask);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +
> >>> +	for (count = 0; count < trips; count++) {
> >>> +		tz->ops->get_trip_type(tz, count, &trip_type);
> >>> +		if (trip_type == THERMAL_TRIP_PASSIVE)
> >>> +			passive = 1;
> >>> +	}
> >>> +
> >>> +	if (!passive) {
> >>> +		result = device_create_file(&tz->device, &dev_attr_passive);
> >>> +		if (result)
> >>> +			goto unregister;
> >>> +	}
> >>> +
> >>> +#ifdef CONFIG_THERMAL_EMULATION
> >>> +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +#endif
> >>> +	/* Create policy attribute */
> >>> +	result = device_create_file(&tz->device, &dev_attr_policy);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +
> >>> +	/* Update 'this' zone's governor information */
> >>> +	mutex_lock(&thermal_governor_lock);
> >>> +
> >>> +	if (tz->tzp)
> >>> +		tz->governor = __find_governor(tz->tzp->governor_name);
> >>> +	else
> >>> +		tz->governor =
> __find_governor(DEFAULT_THERMAL_GOVERNOR);
> >>> +
> >>> +	mutex_unlock(&thermal_governor_lock);
> >>> +
> >>> +	result = thermal_add_hwmon_sysfs(tz);
> >>> +	if (result)
> >>> +		goto unregister;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_add_tail(&tz->node, &thermal_tz_list);
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	/* Bind cooling devices for this zone */
> >>> +	bind_tz(tz);
> >>> +
> >>> +	INIT_DELAYED_WORK(&(tz->poll_queue),
> thermal_zone_device_check);
> >>> +
> >>> +	thermal_zone_device_update(tz);
> >>> +
> >>> +	if (!result)
> >>> +		return tz;
> >>> +
> >>> +unregister:
> >>> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >>> +	device_unregister(&tz->device);
> >>> +	return ERR_PTR(result);
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_zone_device_register);
> >>> +
> >>> +/**
> >>> + * thermal_device_unregister - removes the registered thermal zone
> device
> >>> + * @tz: the thermal zone device to remove
> >>> + */
> >>> +void thermal_zone_device_unregister(struct thermal_zone_device
> *tz)
> >>> +{
> >>> +	int i;
> >>> +	const struct thermal_zone_params *tzp;
> >>> +	struct thermal_cooling_device *cdev;
> >>> +	struct thermal_zone_device *pos = NULL;
> >>> +
> >>> +	if (!tz)
> >>> +		return;
> >>> +
> >>> +	tzp = tz->tzp;
> >>> +
> >>> +	mutex_lock(&thermal_list_lock);
> >>> +	list_for_each_entry(pos, &thermal_tz_list, node)
> >>> +	    if (pos == tz)
> >>> +		break;
> >>> +	if (pos != tz) {
> >>> +		/* thermal zone device not found */
> >>> +		mutex_unlock(&thermal_list_lock);
> >>> +		return;
> >>> +	}
> >>> +	list_del(&tz->node);
> >>> +
> >>> +	/* Unbind all cdevs associated with 'this' thermal zone */
> >>> +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> >>> +		if (tz->ops->unbind) {
> >>> +			tz->ops->unbind(tz, cdev);
> >>> +			continue;
> >>> +		}
> >>> +
> >>> +		if (!tzp || !tzp->tbp)
> >>> +			break;
> >>> +
> >>> +		for (i = 0; i < tzp->num_tbps; i++) {
> >>> +			if (tzp->tbp[i].cdev == cdev) {
> >>> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> >>> +				tzp->tbp[i].cdev = NULL;
> >>> +			}
> >>> +		}
> >>> +	}
> >>> +
> >>> +	mutex_unlock(&thermal_list_lock);
> >>> +
> >>> +	thermal_zone_device_set_polling(tz, 0);
> >>> +
> >>> +	if (tz->type[0])
> >>> +		device_remove_file(&tz->device, &dev_attr_type);
> >>> +	device_remove_file(&tz->device, &dev_attr_temp);
> >>> +	if (tz->ops->get_mode)
> >>> +		device_remove_file(&tz->device, &dev_attr_mode);
> >>> +	device_remove_file(&tz->device, &dev_attr_policy);
> >>> +	remove_trip_attrs(tz);
> >>> +	tz->governor = NULL;
> >>> +
> >>> +	thermal_remove_hwmon_sysfs(tz);
> >>> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >>> +	idr_destroy(&tz->idr);
> >>> +	mutex_destroy(&tz->lock);
> >>> +	device_unregister(&tz->device);
> >>> +	return;
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_zone_device_unregister);
> >>> +
> >>> +#ifdef CONFIG_NET
> >>> +static struct genl_family thermal_event_genl_family = {
> >>> +	.id = GENL_ID_GENERATE,
> >>> +	.name = THERMAL_GENL_FAMILY_NAME,
> >>> +	.version = THERMAL_GENL_VERSION,
> >>> +	.maxattr = THERMAL_GENL_ATTR_MAX,
> >>> +};
> >>> +
> >>> +static struct genl_multicast_group thermal_event_mcgrp = {
> >>> +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> >>> +};
> >>> +
> >>> +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> >>> +					enum events event)
> >>> +{
> >>> +	struct sk_buff *skb;
> >>> +	struct nlattr *attr;
> >>> +	struct thermal_genl_event *thermal_event;
> >>> +	void *msg_header;
> >>> +	int size;
> >>> +	int result;
> >>> +	static unsigned int thermal_event_seqnum;
> >>> +
> >>> +	if (!tz)
> >>> +		return -EINVAL;
> >>> +
> >>> +	/* allocate memory */
> >>> +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> >>> +	       nla_total_size(0);
> >>> +
> >>> +	skb = genlmsg_new(size, GFP_ATOMIC);
> >>> +	if (!skb)
> >>> +		return -ENOMEM;
> >>> +
> >>> +	/* add the genetlink message header */
> >>> +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> >>> +				 &thermal_event_genl_family, 0,
> >>> +				 THERMAL_GENL_CMD_EVENT);
> >>> +	if (!msg_header) {
> >>> +		nlmsg_free(skb);
> >>> +		return -ENOMEM;
> >>> +	}
> >>> +
> >>> +	/* fill the data */
> >>> +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> >>> +			   sizeof(struct thermal_genl_event));
> >>> +
> >>> +	if (!attr) {
> >>> +		nlmsg_free(skb);
> >>> +		return -EINVAL;
> >>> +	}
> >>> +
> >>> +	thermal_event = nla_data(attr);
> >>> +	if (!thermal_event) {
> >>> +		nlmsg_free(skb);
> >>> +		return -EINVAL;
> >>> +	}
> >>> +
> >>> +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> >>> +
> >>> +	thermal_event->orig = tz->id;
> >>> +	thermal_event->event = event;
> >>> +
> >>> +	/* send multicast genetlink message */
> >>> +	result = genlmsg_end(skb, msg_header);
> >>> +	if (result < 0) {
> >>> +		nlmsg_free(skb);
> >>> +		return result;
> >>> +	}
> >>> +
> >>> +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id,
> GFP_ATOMIC);
> >>> +	if (result)
> >>> +		dev_err(&tz->device, "Failed to send netlink event:%d",
> result);
> >>> +
> >>> +	return result;
> >>> +}
> >>> +EXPORT_SYMBOL(thermal_generate_netlink_event);
> >>> +
> >>> +static int genetlink_init(void)
> >>> +{
> >>> +	int result;
> >>> +
> >>> +	result = genl_register_family(&thermal_event_genl_family);
> >>> +	if (result)
> >>> +		return result;
> >>> +
> >>> +	result = genl_register_mc_group(&thermal_event_genl_family,
> >>> +					&thermal_event_mcgrp);
> >>> +	if (result)
> >>> +		genl_unregister_family(&thermal_event_genl_family);
> >>> +	return result;
> >>> +}
> >>> +
> >>> +static void genetlink_exit(void)
> >>> +{
> >>> +	genl_unregister_family(&thermal_event_genl_family);
> >>> +}
> >>> +#else /* !CONFIG_NET */
> >>> +static inline int genetlink_init(void) { return 0; }
> >>> +static inline void genetlink_exit(void) {}
> >>> +#endif /* !CONFIG_NET */
> >>> +
> >>> +static int __init thermal_init(void)
> >>> +{
> >>> +	int result = 0;
> >>> +
> >>> +	result = class_register(&thermal_class);
> >>> +	if (result) {
> >>> +		idr_destroy(&thermal_tz_idr);
> >>> +		idr_destroy(&thermal_cdev_idr);
> >>> +		mutex_destroy(&thermal_idr_lock);
> >>> +		mutex_destroy(&thermal_list_lock);
> >>> +		return result;
> >>> +	}
> >>> +	result = genetlink_init();
> >>> +	return result;
> >>> +}
> >>> +
> >>> +static void __exit thermal_exit(void)
> >>> +{
> >>> +	class_unregister(&thermal_class);
> >>> +	idr_destroy(&thermal_tz_idr);
> >>> +	idr_destroy(&thermal_cdev_idr);
> >>> +	mutex_destroy(&thermal_idr_lock);
> >>> +	mutex_destroy(&thermal_list_lock);
> >>> +	genetlink_exit();
> >>> +}
> >>> +
> >>> +fs_initcall(thermal_init);
> >>> +module_exit(thermal_exit);
> >>> diff --git a/drivers/thermal/thermal_sys.c
> b/drivers/thermal/thermal_sys.c
> >>> deleted file mode 100644
> >>> index 5b7863a..0000000
> >>> --- a/drivers/thermal/thermal_sys.c
> >>> +++ /dev/null
> >>> @@ -1,1888 +0,0 @@
> >>> -/*
> >>> - *  thermal.c - Generic Thermal Management Sysfs support.
> >>> - *
> >>> - *  Copyright (C) 2008 Intel Corp
> >>> - *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
> >>> - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
> >>> - *
> >>> - *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> >>> - *
> >>> - *  This program is free software; you can redistribute it and/or modify
> >>> - *  it under the terms of the GNU General Public License as published by
> >>> - *  the Free Software Foundation; version 2 of the License.
> >>> - *
> >>> - *  This program is distributed in the hope that it will be useful, but
> >>> - *  WITHOUT ANY WARRANTY; without even the implied warranty of
> >>> - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
> the GNU
> >>> - *  General Public License for more details.
> >>> - *
> >>> - *  You should have received a copy of the GNU General Public License
> along
> >>> - *  with this program; if not, write to the Free Software Foundation, Inc.,
> >>> - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
> >>> - *
> >>> - *
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~
> >>> - */
> >>> -
> >>> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> >>> -
> >>> -#include <linux/module.h>
> >>> -#include <linux/device.h>
> >>> -#include <linux/err.h>
> >>> -#include <linux/slab.h>
> >>> -#include <linux/kdev_t.h>
> >>> -#include <linux/idr.h>
> >>> -#include <linux/thermal.h>
> >>> -#include <linux/reboot.h>
> >>> -#include <net/netlink.h>
> >>> -#include <net/genetlink.h>
> >>> -
> >>> -#include "thermal_core.h"
> >>> -
> >>> -MODULE_AUTHOR("Zhang Rui");
> >>> -MODULE_DESCRIPTION("Generic thermal management sysfs
> support");
> >>> -MODULE_LICENSE("GPL");
> >>> -
> >>> -static DEFINE_IDR(thermal_tz_idr);
> >>> -static DEFINE_IDR(thermal_cdev_idr);
> >>> -static DEFINE_MUTEX(thermal_idr_lock);
> >>> -
> >>> -static LIST_HEAD(thermal_tz_list);
> >>> -static LIST_HEAD(thermal_cdev_list);
> >>> -static LIST_HEAD(thermal_governor_list);
> >>> -
> >>> -static DEFINE_MUTEX(thermal_list_lock);
> >>> -static DEFINE_MUTEX(thermal_governor_lock);
> >>> -
> >>> -static struct thermal_governor *__find_governor(const char *name)
> >>> -{
> >>> -	struct thermal_governor *pos;
> >>> -
> >>> -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
> >>> -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
> >>> -			return pos;
> >>> -
> >>> -	return NULL;
> >>> -}
> >>> -
> >>> -int thermal_register_governor(struct thermal_governor *governor)
> >>> -{
> >>> -	int err;
> >>> -	const char *name;
> >>> -	struct thermal_zone_device *pos;
> >>> -
> >>> -	if (!governor)
> >>> -		return -EINVAL;
> >>> -
> >>> -	mutex_lock(&thermal_governor_lock);
> >>> -
> >>> -	err = -EBUSY;
> >>> -	if (__find_governor(governor->name) == NULL) {
> >>> -		err = 0;
> >>> -		list_add(&governor->governor_list,
> &thermal_governor_list);
> >>> -	}
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -
> >>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> >>> -		if (pos->governor)
> >>> -			continue;
> >>> -		if (pos->tzp)
> >>> -			name = pos->tzp->governor_name;
> >>> -		else
> >>> -			name = DEFAULT_THERMAL_GOVERNOR;
> >>> -		if (!strnicmp(name, governor->name,
> THERMAL_NAME_LENGTH))
> >>> -			pos->governor = governor;
> >>> -	}
> >>> -
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -	mutex_unlock(&thermal_governor_lock);
> >>> -
> >>> -	return err;
> >>> -}
> >>> -EXPORT_SYMBOL_GPL(thermal_register_governor);
> >>> -
> >>> -void thermal_unregister_governor(struct thermal_governor
> *governor)
> >>> -{
> >>> -	struct thermal_zone_device *pos;
> >>> -
> >>> -	if (!governor)
> >>> -		return;
> >>> -
> >>> -	mutex_lock(&thermal_governor_lock);
> >>> -
> >>> -	if (__find_governor(governor->name) == NULL)
> >>> -		goto exit;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -
> >>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> >>> -		if (!strnicmp(pos->governor->name, governor->name,
> >>> -						THERMAL_NAME_LENGTH))
> >>> -			pos->governor = NULL;
> >>> -	}
> >>> -
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -	list_del(&governor->governor_list);
> >>> -exit:
> >>> -	mutex_unlock(&thermal_governor_lock);
> >>> -	return;
> >>> -}
> >>> -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
> >>> -
> >>> -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
> >>> -{
> >>> -	int ret;
> >>> -
> >>> -	if (lock)
> >>> -		mutex_lock(lock);
> >>> -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
> >>> -	if (lock)
> >>> -		mutex_unlock(lock);
> >>> -	if (unlikely(ret < 0))
> >>> -		return ret;
> >>> -	*id = ret;
> >>> -	return 0;
> >>> -}
> >>> -
> >>> -static void release_idr(struct idr *idr, struct mutex *lock, int id)
> >>> -{
> >>> -	if (lock)
> >>> -		mutex_lock(lock);
> >>> -	idr_remove(idr, id);
> >>> -	if (lock)
> >>> -		mutex_unlock(lock);
> >>> -}
> >>> -
> >>> -int get_tz_trend(struct thermal_zone_device *tz, int trip)
> >>> -{
> >>> -	enum thermal_trend trend;
> >>> -
> >>> -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
> >>> -		if (tz->temperature > tz->last_temperature)
> >>> -			trend = THERMAL_TREND_RAISING;
> >>> -		else if (tz->temperature < tz->last_temperature)
> >>> -			trend = THERMAL_TREND_DROPPING;
> >>> -		else
> >>> -			trend = THERMAL_TREND_STABLE;
> >>> -	}
> >>> -
> >>> -	return trend;
> >>> -}
> >>> -EXPORT_SYMBOL(get_tz_trend);
> >>> -
> >>> -struct thermal_instance *get_thermal_instance(struct
> thermal_zone_device *tz,
> >>> -			struct thermal_cooling_device *cdev, int trip)
> >>> -{
> >>> -	struct thermal_instance *pos = NULL;
> >>> -	struct thermal_instance *target_instance = NULL;
> >>> -
> >>> -	mutex_lock(&tz->lock);
> >>> -	mutex_lock(&cdev->lock);
> >>> -
> >>> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
> >>> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> >>> -			target_instance = pos;
> >>> -			break;
> >>> -		}
> >>> -	}
> >>> -
> >>> -	mutex_unlock(&cdev->lock);
> >>> -	mutex_unlock(&tz->lock);
> >>> -
> >>> -	return target_instance;
> >>> -}
> >>> -EXPORT_SYMBOL(get_thermal_instance);
> >>> -
> >>> -static void print_bind_err_msg(struct thermal_zone_device *tz,
> >>> -			struct thermal_cooling_device *cdev, int ret)
> >>> -{
> >>> -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
> >>> -				tz->type, cdev->type, ret);
> >>> -}
> >>> -
> >>> -static void __bind(struct thermal_zone_device *tz, int mask,
> >>> -			struct thermal_cooling_device *cdev)
> >>> -{
> >>> -	int i, ret;
> >>> -
> >>> -	for (i = 0; i < tz->trips; i++) {
> >>> -		if (mask & (1 << i)) {
> >>> -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
> >>> -					THERMAL_NO_LIMIT,
> THERMAL_NO_LIMIT);
> >>> -			if (ret)
> >>> -				print_bind_err_msg(tz, cdev, ret);
> >>> -		}
> >>> -	}
> >>> -}
> >>> -
> >>> -static void __unbind(struct thermal_zone_device *tz, int mask,
> >>> -			struct thermal_cooling_device *cdev)
> >>> -{
> >>> -	int i;
> >>> -
> >>> -	for (i = 0; i < tz->trips; i++)
> >>> -		if (mask & (1 << i))
> >>> -			thermal_zone_unbind_cooling_device(tz, i, cdev);
> >>> -}
> >>> -
> >>> -static void bind_cdev(struct thermal_cooling_device *cdev)
> >>> -{
> >>> -	int i, ret;
> >>> -	const struct thermal_zone_params *tzp;
> >>> -	struct thermal_zone_device *pos = NULL;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -
> >>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
> >>> -		if (!pos->tzp && !pos->ops->bind)
> >>> -			continue;
> >>> -
> >>> -		if (!pos->tzp && pos->ops->bind) {
> >>> -			ret = pos->ops->bind(pos, cdev);
> >>> -			if (ret)
> >>> -				print_bind_err_msg(pos, cdev, ret);
> >>> -		}
> >>> -
> >>> -		tzp = pos->tzp;
> >>> -		if (!tzp || !tzp->tbp)
> >>> -			continue;
> >>> -
> >>> -		for (i = 0; i < tzp->num_tbps; i++) {
> >>> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> >>> -				continue;
> >>> -			if (tzp->tbp[i].match(pos, cdev))
> >>> -				continue;
> >>> -			tzp->tbp[i].cdev = cdev;
> >>> -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
> >>> -		}
> >>> -	}
> >>> -
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -}
> >>> -
> >>> -static void bind_tz(struct thermal_zone_device *tz)
> >>> -{
> >>> -	int i, ret;
> >>> -	struct thermal_cooling_device *pos = NULL;
> >>> -	const struct thermal_zone_params *tzp = tz->tzp;
> >>> -
> >>> -	if (!tzp && !tz->ops->bind)
> >>> -		return;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -
> >>> -	/* If there is no platform data, try to use ops->bind */
> >>> -	if (!tzp && tz->ops->bind) {
> >>> -		list_for_each_entry(pos, &thermal_cdev_list, node) {
> >>> -			ret = tz->ops->bind(tz, pos);
> >>> -			if (ret)
> >>> -				print_bind_err_msg(tz, pos, ret);
> >>> -		}
> >>> -		goto exit;
> >>> -	}
> >>> -
> >>> -	if (!tzp || !tzp->tbp)
> >>> -		goto exit;
> >>> -
> >>> -	list_for_each_entry(pos, &thermal_cdev_list, node) {
> >>> -		for (i = 0; i < tzp->num_tbps; i++) {
> >>> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
> >>> -				continue;
> >>> -			if (tzp->tbp[i].match(tz, pos))
> >>> -				continue;
> >>> -			tzp->tbp[i].cdev = pos;
> >>> -			__bind(tz, tzp->tbp[i].trip_mask, pos);
> >>> -		}
> >>> -	}
> >>> -exit:
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -}
> >>> -
> >>> -static void thermal_zone_device_set_polling(struct
> thermal_zone_device *tz,
> >>> -					    int delay)
> >>> -{
> >>> -	if (delay > 1000)
> >>> -		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> >>> -				 round_jiffies(msecs_to_jiffies(delay)));
> >>> -	else if (delay)
> >>> -		mod_delayed_work(system_freezable_wq, &tz-
> >poll_queue,
> >>> -				 msecs_to_jiffies(delay));
> >>> -	else
> >>> -		cancel_delayed_work(&tz->poll_queue);
> >>> -}
> >>> -
> >>> -static void monitor_thermal_zone(struct thermal_zone_device *tz)
> >>> -{
> >>> -	mutex_lock(&tz->lock);
> >>> -
> >>> -	if (tz->passive)
> >>> -		thermal_zone_device_set_polling(tz, tz->passive_delay);
> >>> -	else if (tz->polling_delay)
> >>> -		thermal_zone_device_set_polling(tz, tz->polling_delay);
> >>> -	else
> >>> -		thermal_zone_device_set_polling(tz, 0);
> >>> -
> >>> -	mutex_unlock(&tz->lock);
> >>> -}
> >>> -
> >>> -static void handle_non_critical_trips(struct thermal_zone_device *tz,
> >>> -			int trip, enum thermal_trip_type trip_type)
> >>> -{
> >>> -	if (tz->governor)
> >>> -		tz->governor->throttle(tz, trip);
> >>> -}
> >>> -
> >>> -static void handle_critical_trips(struct thermal_zone_device *tz,
> >>> -				int trip, enum thermal_trip_type trip_type)
> >>> -{
> >>> -	long trip_temp;
> >>> -
> >>> -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
> >>> -
> >>> -	/* If we have not crossed the trip_temp, we do not care. */
> >>> -	if (tz->temperature < trip_temp)
> >>> -		return;
> >>> -
> >>> -	if (tz->ops->notify)
> >>> -		tz->ops->notify(tz, trip, trip_type);
> >>> -
> >>> -	if (trip_type == THERMAL_TRIP_CRITICAL) {
> >>> -		dev_emerg(&tz->device,
> >>> -			  "critical temperature reached(%d C),shutting
> down\n",
> >>> -			  tz->temperature / 1000);
> >>> -		orderly_poweroff(true);
> >>> -	}
> >>> -}
> >>> -
> >>> -static void handle_thermal_trip(struct thermal_zone_device *tz, int
> trip)
> >>> -{
> >>> -	enum thermal_trip_type type;
> >>> -
> >>> -	tz->ops->get_trip_type(tz, trip, &type);
> >>> -
> >>> -	if (type == THERMAL_TRIP_CRITICAL || type ==
> THERMAL_TRIP_HOT)
> >>> -		handle_critical_trips(tz, trip, type);
> >>> -	else
> >>> -		handle_non_critical_trips(tz, trip, type);
> >>> -	/*
> >>> -	 * Alright, we handled this trip successfully.
> >>> -	 * So, start monitoring again.
> >>> -	 */
> >>> -	monitor_thermal_zone(tz);
> >>> -}
> >>> -
> >>> -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
> >>> -				unsigned long *temp)
> >>> -{
> >>> -	int ret = 0;
> >>> -#ifdef CONFIG_THERMAL_EMULATION
> >>> -	int count;
> >>> -	unsigned long crit_temp = -1UL;
> >>> -	enum thermal_trip_type type;
> >>> -#endif
> >>> -
> >>> -	mutex_lock(&tz->lock);
> >>> -
> >>> -	ret = tz->ops->get_temp(tz, temp);
> >>> -#ifdef CONFIG_THERMAL_EMULATION
> >>> -	if (!tz->emul_temperature)
> >>> -		goto skip_emul;
> >>> -
> >>> -	for (count = 0; count < tz->trips; count++) {
> >>> -		ret = tz->ops->get_trip_type(tz, count, &type);
> >>> -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
> >>> -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> >>> -			break;
> >>> -		}
> >>> -	}
> >>> -
> >>> -	if (ret)
> >>> -		goto skip_emul;
> >>> -
> >>> -	if (*temp < crit_temp)
> >>> -		*temp = tz->emul_temperature;
> >>> -skip_emul:
> >>> -#endif
> >>> -	mutex_unlock(&tz->lock);
> >>> -	return ret;
> >>> -}
> >>> -
> >>> -static void update_temperature(struct thermal_zone_device *tz)
> >>> -{
> >>> -	long temp;
> >>> -	int ret;
> >>> -
> >>> -	ret = thermal_zone_get_temp(tz, &temp);
> >>> -	if (ret) {
> >>> -		dev_warn(&tz->device, "failed to read out thermal zone
> %d\n",
> >>> -			 tz->id);
> >>> -		return;
> >>> -	}
> >>> -
> >>> -	mutex_lock(&tz->lock);
> >>> -	tz->last_temperature = tz->temperature;
> >>> -	tz->temperature = temp;
> >>> -	mutex_unlock(&tz->lock);
> >>> -}
> >>> -
> >>> -void thermal_zone_device_update(struct thermal_zone_device *tz)
> >>> -{
> >>> -	int count;
> >>> -
> >>> -	update_temperature(tz);
> >>> -
> >>> -	for (count = 0; count < tz->trips; count++)
> >>> -		handle_thermal_trip(tz, count);
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_zone_device_update);
> >>> -
> >>> -static void thermal_zone_device_check(struct work_struct *work)
> >>> -{
> >>> -	struct thermal_zone_device *tz = container_of(work, struct
> >>> -						      thermal_zone_device,
> >>> -						      poll_queue.work);
> >>> -	thermal_zone_device_update(tz);
> >>> -}
> >>> -
> >>> -/* sys I/F for thermal zone */
> >>> -
> >>> -#define to_thermal_zone(_dev) \
> >>> -	container_of(_dev, struct thermal_zone_device, device)
> >>> -
> >>> -static ssize_t
> >>> -type_show(struct device *dev, struct device_attribute *attr, char *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -
> >>> -	return sprintf(buf, "%s\n", tz->type);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -temp_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	long temperature;
> >>> -	int ret;
> >>> -
> >>> -	ret = thermal_zone_get_temp(tz, &temperature);
> >>> -
> >>> -	if (ret)
> >>> -		return ret;
> >>> -
> >>> -	return sprintf(buf, "%ld\n", temperature);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -mode_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	enum thermal_device_mode mode;
> >>> -	int result;
> >>> -
> >>> -	if (!tz->ops->get_mode)
> >>> -		return -EPERM;
> >>> -
> >>> -	result = tz->ops->get_mode(tz, &mode);
> >>> -	if (result)
> >>> -		return result;
> >>> -
> >>> -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ?
> "enabled"
> >>> -		       : "disabled");
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -mode_store(struct device *dev, struct device_attribute *attr,
> >>> -	   const char *buf, size_t count)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	int result;
> >>> -
> >>> -	if (!tz->ops->set_mode)
> >>> -		return -EPERM;
> >>> -
> >>> -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> >>> -		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_ENABLED);
> >>> -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> >>> -		result = tz->ops->set_mode(tz,
> THERMAL_DEVICE_DISABLED);
> >>> -	else
> >>> -		result = -EINVAL;
> >>> -
> >>> -	if (result)
> >>> -		return result;
> >>> -
> >>> -	return count;
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -trip_point_type_show(struct device *dev, struct device_attribute
> *attr,
> >>> -		     char *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	enum thermal_trip_type type;
> >>> -	int trip, result;
> >>> -
> >>> -	if (!tz->ops->get_trip_type)
> >>> -		return -EPERM;
> >>> -
> >>> -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
> >>> -		return -EINVAL;
> >>> -
> >>> -	result = tz->ops->get_trip_type(tz, trip, &type);
> >>> -	if (result)
> >>> -		return result;
> >>> -
> >>> -	switch (type) {
> >>> -	case THERMAL_TRIP_CRITICAL:
> >>> -		return sprintf(buf, "critical\n");
> >>> -	case THERMAL_TRIP_HOT:
> >>> -		return sprintf(buf, "hot\n");
> >>> -	case THERMAL_TRIP_PASSIVE:
> >>> -		return sprintf(buf, "passive\n");
> >>> -	case THERMAL_TRIP_ACTIVE:
> >>> -		return sprintf(buf, "active\n");
> >>> -	default:
> >>> -		return sprintf(buf, "unknown\n");
> >>> -	}
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -trip_point_temp_store(struct device *dev, struct device_attribute
> *attr,
> >>> -		     const char *buf, size_t count)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	int trip, ret;
> >>> -	unsigned long temperature;
> >>> -
> >>> -	if (!tz->ops->set_trip_temp)
> >>> -		return -EPERM;
> >>> -
> >>> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> >>> -		return -EINVAL;
> >>> -
> >>> -	if (kstrtoul(buf, 10, &temperature))
> >>> -		return -EINVAL;
> >>> -
> >>> -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
> >>> -
> >>> -	return ret ? ret : count;
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -trip_point_temp_show(struct device *dev, struct device_attribute
> *attr,
> >>> -		     char *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	int trip, ret;
> >>> -	long temperature;
> >>> -
> >>> -	if (!tz->ops->get_trip_temp)
> >>> -		return -EPERM;
> >>> -
> >>> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
> >>> -		return -EINVAL;
> >>> -
> >>> -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
> >>> -
> >>> -	if (ret)
> >>> -		return ret;
> >>> -
> >>> -	return sprintf(buf, "%ld\n", temperature);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> >>> -			const char *buf, size_t count)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	int trip, ret;
> >>> -	unsigned long temperature;
> >>> -
> >>> -	if (!tz->ops->set_trip_hyst)
> >>> -		return -EPERM;
> >>> -
> >>> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> >>> -		return -EINVAL;
> >>> -
> >>> -	if (kstrtoul(buf, 10, &temperature))
> >>> -		return -EINVAL;
> >>> -
> >>> -	/*
> >>> -	 * We are not doing any check on the 'temperature' value
> >>> -	 * here. The driver implementing 'set_trip_hyst' has to
> >>> -	 * take care of this.
> >>> -	 */
> >>> -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> >>> -
> >>> -	return ret ? ret : count;
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
> >>> -			char *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	int trip, ret;
> >>> -	unsigned long temperature;
> >>> -
> >>> -	if (!tz->ops->get_trip_hyst)
> >>> -		return -EPERM;
> >>> -
> >>> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
> >>> -		return -EINVAL;
> >>> -
> >>> -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
> >>> -
> >>> -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -passive_store(struct device *dev, struct device_attribute *attr,
> >>> -		    const char *buf, size_t count)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	struct thermal_cooling_device *cdev = NULL;
> >>> -	int state;
> >>> -
> >>> -	if (!sscanf(buf, "%d\n", &state))
> >>> -		return -EINVAL;
> >>> -
> >>> -	/* sanity check: values below 1000 millicelcius don't make sense
> >>> -	 * and can cause the system to go into a thermal heart attack
> >>> -	 */
> >>> -	if (state && state < 1000)
> >>> -		return -EINVAL;
> >>> -
> >>> -	if (state && !tz->forced_passive) {
> >>> -		mutex_lock(&thermal_list_lock);
> >>> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> >>> -			if (!strncmp("Processor", cdev->type,
> >>> -				     sizeof("Processor")))
> >>> -				thermal_zone_bind_cooling_device(tz,
> >>> -						THERMAL_TRIPS_NONE,
> cdev,
> >>> -						THERMAL_NO_LIMIT,
> >>> -						THERMAL_NO_LIMIT);
> >>> -		}
> >>> -		mutex_unlock(&thermal_list_lock);
> >>> -		if (!tz->passive_delay)
> >>> -			tz->passive_delay = 1000;
> >>> -	} else if (!state && tz->forced_passive) {
> >>> -		mutex_lock(&thermal_list_lock);
> >>> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
> >>> -			if (!strncmp("Processor", cdev->type,
> >>> -				     sizeof("Processor")))
> >>> -				thermal_zone_unbind_cooling_device(tz,
> >>> -
> THERMAL_TRIPS_NONE,
> >>> -								   cdev);
> >>> -		}
> >>> -		mutex_unlock(&thermal_list_lock);
> >>> -		tz->passive_delay = 0;
> >>> -	}
> >>> -
> >>> -	tz->forced_passive = state;
> >>> -
> >>> -	thermal_zone_device_update(tz);
> >>> -
> >>> -	return count;
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -passive_show(struct device *dev, struct device_attribute *attr,
> >>> -		   char *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -
> >>> -	return sprintf(buf, "%d\n", tz->forced_passive);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -policy_store(struct device *dev, struct device_attribute *attr,
> >>> -		    const char *buf, size_t count)
> >>> -{
> >>> -	int ret = -EINVAL;
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	struct thermal_governor *gov;
> >>> -
> >>> -	mutex_lock(&thermal_governor_lock);
> >>> -
> >>> -	gov = __find_governor(buf);
> >>> -	if (!gov)
> >>> -		goto exit;
> >>> -
> >>> -	tz->governor = gov;
> >>> -	ret = count;
> >>> -
> >>> -exit:
> >>> -	mutex_unlock(&thermal_governor_lock);
> >>> -	return ret;
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -policy_show(struct device *dev, struct device_attribute *devattr, char
> *buf)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -
> >>> -	return sprintf(buf, "%s\n", tz->governor->name);
> >>> -}
> >>> -
> >>> -#ifdef CONFIG_THERMAL_EMULATION
> >>> -static ssize_t
> >>> -emul_temp_store(struct device *dev, struct device_attribute *attr,
> >>> -		     const char *buf, size_t count)
> >>> -{
> >>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
> >>> -	int ret = 0;
> >>> -	unsigned long temperature;
> >>> -
> >>> -	if (kstrtoul(buf, 10, &temperature))
> >>> -		return -EINVAL;
> >>> -
> >>> -	if (!tz->ops->set_emul_temp) {
> >>> -		mutex_lock(&tz->lock);
> >>> -		tz->emul_temperature = temperature;
> >>> -		mutex_unlock(&tz->lock);
> >>> -	} else {
> >>> -		ret = tz->ops->set_emul_temp(tz, temperature);
> >>> -	}
> >>> -
> >>> -	return ret ? ret : count;
> >>> -}
> >>> -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
> >>> -#endif/*CONFIG_THERMAL_EMULATION*/
> >>> -
> >>> -static DEVICE_ATTR(type, 0444, type_show, NULL);
> >>> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
> >>> -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
> >>> -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show,
> passive_store);
> >>> -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show,
> policy_store);
> >>> -
> >>> -/* sys I/F for cooling device */
> >>> -#define to_cooling_device(_dev)	\
> >>> -	container_of(_dev, struct thermal_cooling_device, device)
> >>> -
> >>> -static ssize_t
> >>> -thermal_cooling_device_type_show(struct device *dev,
> >>> -				 struct device_attribute *attr, char *buf)
> >>> -{
> >>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> -
> >>> -	return sprintf(buf, "%s\n", cdev->type);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -thermal_cooling_device_max_state_show(struct device *dev,
> >>> -				      struct device_attribute *attr, char *buf)
> >>> -{
> >>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> -	unsigned long state;
> >>> -	int ret;
> >>> -
> >>> -	ret = cdev->ops->get_max_state(cdev, &state);
> >>> -	if (ret)
> >>> -		return ret;
> >>> -	return sprintf(buf, "%ld\n", state);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -thermal_cooling_device_cur_state_show(struct device *dev,
> >>> -				      struct device_attribute *attr, char *buf)
> >>> -{
> >>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> -	unsigned long state;
> >>> -	int ret;
> >>> -
> >>> -	ret = cdev->ops->get_cur_state(cdev, &state);
> >>> -	if (ret)
> >>> -		return ret;
> >>> -	return sprintf(buf, "%ld\n", state);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -thermal_cooling_device_cur_state_store(struct device *dev,
> >>> -				       struct device_attribute *attr,
> >>> -				       const char *buf, size_t count)
> >>> -{
> >>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
> >>> -	unsigned long state;
> >>> -	int result;
> >>> -
> >>> -	if (!sscanf(buf, "%ld\n", &state))
> >>> -		return -EINVAL;
> >>> -
> >>> -	if ((long)state < 0)
> >>> -		return -EINVAL;
> >>> -
> >>> -	result = cdev->ops->set_cur_state(cdev, state);
> >>> -	if (result)
> >>> -		return result;
> >>> -	return count;
> >>> -}
> >>> -
> >>> -static struct device_attribute dev_attr_cdev_type =
> >>> -__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
> >>> -static DEVICE_ATTR(max_state, 0444,
> >>> -		   thermal_cooling_device_max_state_show, NULL);
> >>> -static DEVICE_ATTR(cur_state, 0644,
> >>> -		   thermal_cooling_device_cur_state_show,
> >>> -		   thermal_cooling_device_cur_state_store);
> >>> -
> >>> -static ssize_t
> >>> -thermal_cooling_device_trip_point_show(struct device *dev,
> >>> -				       struct device_attribute *attr, char *buf)
> >>> -{
> >>> -	struct thermal_instance *instance;
> >>> -
> >>> -	instance =
> >>> -	    container_of(attr, struct thermal_instance, attr);
> >>> -
> >>> -	if (instance->trip == THERMAL_TRIPS_NONE)
> >>> -		return sprintf(buf, "-1\n");
> >>> -	else
> >>> -		return sprintf(buf, "%d\n", instance->trip);
> >>> -}
> >>> -
> >>> -/* Device management */
> >>> -
> >>> -#if defined(CONFIG_THERMAL_HWMON)
> >>> -
> >>> -/* hwmon sys I/F */
> >>> -#include <linux/hwmon.h>
> >>> -
> >>> -/* thermal zone devices with the same type share one hwmon device
> */
> >>> -struct thermal_hwmon_device {
> >>> -	char type[THERMAL_NAME_LENGTH];
> >>> -	struct device *device;
> >>> -	int count;
> >>> -	struct list_head tz_list;
> >>> -	struct list_head node;
> >>> -};
> >>> -
> >>> -struct thermal_hwmon_attr {
> >>> -	struct device_attribute attr;
> >>> -	char name[16];
> >>> -};
> >>> -
> >>> -/* one temperature input for each thermal zone */
> >>> -struct thermal_hwmon_temp {
> >>> -	struct list_head hwmon_node;
> >>> -	struct thermal_zone_device *tz;
> >>> -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
> >>> -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
> >>> -};
> >>> -
> >>> -static LIST_HEAD(thermal_hwmon_list);
> >>> -
> >>> -static ssize_t
> >>> -name_show(struct device *dev, struct device_attribute *attr, char
> *buf)
> >>> -{
> >>> -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
> >>> -	return sprintf(buf, "%s\n", hwmon->type);
> >>> -}
> >>> -static DEVICE_ATTR(name, 0444, name_show, NULL);
> >>> -
> >>> -static ssize_t
> >>> -temp_input_show(struct device *dev, struct device_attribute *attr,
> char *buf)
> >>> -{
> >>> -	long temperature;
> >>> -	int ret;
> >>> -	struct thermal_hwmon_attr *hwmon_attr
> >>> -			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> >>> -	struct thermal_hwmon_temp *temp
> >>> -			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> >>> -				       temp_input);
> >>> -	struct thermal_zone_device *tz = temp->tz;
> >>> -
> >>> -	ret = thermal_zone_get_temp(tz, &temperature);
> >>> -
> >>> -	if (ret)
> >>> -		return ret;
> >>> -
> >>> -	return sprintf(buf, "%ld\n", temperature);
> >>> -}
> >>> -
> >>> -static ssize_t
> >>> -temp_crit_show(struct device *dev, struct device_attribute *attr,
> >>> -		char *buf)
> >>> -{
> >>> -	struct thermal_hwmon_attr *hwmon_attr
> >>> -			= container_of(attr, struct thermal_hwmon_attr,
> attr);
> >>> -	struct thermal_hwmon_temp *temp
> >>> -			= container_of(hwmon_attr, struct
> thermal_hwmon_temp,
> >>> -				       temp_crit);
> >>> -	struct thermal_zone_device *tz = temp->tz;
> >>> -	long temperature;
> >>> -	int ret;
> >>> -
> >>> -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
> >>> -	if (ret)
> >>> -		return ret;
> >>> -
> >>> -	return sprintf(buf, "%ld\n", temperature);
> >>> -}
> >>> -
> >>> -
> >>> -static struct thermal_hwmon_device *
> >>> -thermal_hwmon_lookup_by_type(const struct thermal_zone_device
> *tz)
> >>> -{
> >>> -	struct thermal_hwmon_device *hwmon;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
> >>> -		if (!strcmp(hwmon->type, tz->type)) {
> >>> -			mutex_unlock(&thermal_list_lock);
> >>> -			return hwmon;
> >>> -		}
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	return NULL;
> >>> -}
> >>> -
> >>> -/* Find the temperature input matching a given thermal zone */
> >>> -static struct thermal_hwmon_temp *
> >>> -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device
> *hwmon,
> >>> -			  const struct thermal_zone_device *tz)
> >>> -{
> >>> -	struct thermal_hwmon_temp *temp;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
> >>> -		if (temp->tz == tz) {
> >>> -			mutex_unlock(&thermal_list_lock);
> >>> -			return temp;
> >>> -		}
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	return NULL;
> >>> -}
> >>> -
> >>> -static int
> >>> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> -{
> >>> -	struct thermal_hwmon_device *hwmon;
> >>> -	struct thermal_hwmon_temp *temp;
> >>> -	int new_hwmon_device = 1;
> >>> -	int result;
> >>> -
> >>> -	hwmon = thermal_hwmon_lookup_by_type(tz);
> >>> -	if (hwmon) {
> >>> -		new_hwmon_device = 0;
> >>> -		goto register_sys_interface;
> >>> -	}
> >>> -
> >>> -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device),
> GFP_KERNEL);
> >>> -	if (!hwmon)
> >>> -		return -ENOMEM;
> >>> -
> >>> -	INIT_LIST_HEAD(&hwmon->tz_list);
> >>> -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
> >>> -	hwmon->device = hwmon_device_register(NULL);
> >>> -	if (IS_ERR(hwmon->device)) {
> >>> -		result = PTR_ERR(hwmon->device);
> >>> -		goto free_mem;
> >>> -	}
> >>> -	dev_set_drvdata(hwmon->device, hwmon);
> >>> -	result = device_create_file(hwmon->device, &dev_attr_name);
> >>> -	if (result)
> >>> -		goto free_mem;
> >>> -
> >>> - register_sys_interface:
> >>> -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
> >>> -	if (!temp) {
> >>> -		result = -ENOMEM;
> >>> -		goto unregister_name;
> >>> -	}
> >>> -
> >>> -	temp->tz = tz;
> >>> -	hwmon->count++;
> >>> -
> >>> -	snprintf(temp->temp_input.name, sizeof(temp-
> >temp_input.name),
> >>> -		 "temp%d_input", hwmon->count);
> >>> -	temp->temp_input.attr.attr.name = temp->temp_input.name;
> >>> -	temp->temp_input.attr.attr.mode = 0444;
> >>> -	temp->temp_input.attr.show = temp_input_show;
> >>> -	sysfs_attr_init(&temp->temp_input.attr.attr);
> >>> -	result = device_create_file(hwmon->device, &temp-
> >temp_input.attr);
> >>> -	if (result)
> >>> -		goto free_temp_mem;
> >>> -
> >>> -	if (tz->ops->get_crit_temp) {
> >>> -		unsigned long temperature;
> >>> -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
> >>> -			snprintf(temp->temp_crit.name,
> >>> -				 sizeof(temp->temp_crit.name),
> >>> -				"temp%d_crit", hwmon->count);
> >>> -			temp->temp_crit.attr.attr.name = temp-
> >temp_crit.name;
> >>> -			temp->temp_crit.attr.attr.mode = 0444;
> >>> -			temp->temp_crit.attr.show = temp_crit_show;
> >>> -			sysfs_attr_init(&temp->temp_crit.attr.attr);
> >>> -			result = device_create_file(hwmon->device,
> >>> -						    &temp->temp_crit.attr);
> >>> -			if (result)
> >>> -				goto unregister_input;
> >>> -		}
> >>> -	}
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	if (new_hwmon_device)
> >>> -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
> >>> -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	return 0;
> >>> -
> >>> - unregister_input:
> >>> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> >>> - free_temp_mem:
> >>> -	kfree(temp);
> >>> - unregister_name:
> >>> -	if (new_hwmon_device) {
> >>> -		device_remove_file(hwmon->device, &dev_attr_name);
> >>> -		hwmon_device_unregister(hwmon->device);
> >>> -	}
> >>> - free_mem:
> >>> -	if (new_hwmon_device)
> >>> -		kfree(hwmon);
> >>> -
> >>> -	return result;
> >>> -}
> >>> -
> >>> -static void
> >>> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> -{
> >>> -	struct thermal_hwmon_device *hwmon;
> >>> -	struct thermal_hwmon_temp *temp;
> >>> -
> >>> -	hwmon = thermal_hwmon_lookup_by_type(tz);
> >>> -	if (unlikely(!hwmon)) {
> >>> -		/* Should never happen... */
> >>> -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
> >>> -		return;
> >>> -	}
> >>> -
> >>> -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
> >>> -	if (unlikely(!temp)) {
> >>> -		/* Should never happen... */
> >>> -		dev_dbg(&tz->device, "temperature input lookup
> failed!\n");
> >>> -		return;
> >>> -	}
> >>> -
> >>> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
> >>> -	if (tz->ops->get_crit_temp)
> >>> -		device_remove_file(hwmon->device, &temp-
> >temp_crit.attr);
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_del(&temp->hwmon_node);
> >>> -	kfree(temp);
> >>> -	if (!list_empty(&hwmon->tz_list)) {
> >>> -		mutex_unlock(&thermal_list_lock);
> >>> -		return;
> >>> -	}
> >>> -	list_del(&hwmon->node);
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	device_remove_file(hwmon->device, &dev_attr_name);
> >>> -	hwmon_device_unregister(hwmon->device);
> >>> -	kfree(hwmon);
> >>> -}
> >>> -#else
> >>> -static int
> >>> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> -{
> >>> -	return 0;
> >>> -}
> >>> -
> >>> -static void
> >>> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
> >>> -{
> >>> -}
> >>> -#endif
> >>> -
> >>> -/**
> >>> - * thermal_zone_bind_cooling_device - bind a cooling device to a
> thermal zone
> >>> - * @tz:		thermal zone device
> >>> - * @trip:	indicates which trip point the cooling devices is
> >>> - *		associated with in this thermal zone.
> >>> - * @cdev:	thermal cooling device
> >>> - *
> >>> - * This function is usually called in the thermal zone device .bind
> callback.
> >>> - */
> >>> -int thermal_zone_bind_cooling_device(struct thermal_zone_device
> *tz,
> >>> -				     int trip,
> >>> -				     struct thermal_cooling_device *cdev,
> >>> -				     unsigned long upper, unsigned long lower)
> >>> -{
> >>> -	struct thermal_instance *dev;
> >>> -	struct thermal_instance *pos;
> >>> -	struct thermal_zone_device *pos1;
> >>> -	struct thermal_cooling_device *pos2;
> >>> -	unsigned long max_state;
> >>> -	int result;
> >>> -
> >>> -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
> >>> -		return -EINVAL;
> >>> -
> >>> -	list_for_each_entry(pos1, &thermal_tz_list, node) {
> >>> -		if (pos1 == tz)
> >>> -			break;
> >>> -	}
> >>> -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
> >>> -		if (pos2 == cdev)
> >>> -			break;
> >>> -	}
> >>> -
> >>> -	if (tz != pos1 || cdev != pos2)
> >>> -		return -EINVAL;
> >>> -
> >>> -	cdev->ops->get_max_state(cdev, &max_state);
> >>> -
> >>> -	/* lower default 0, upper default max_state */
> >>> -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
> >>> -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
> >>> -
> >>> -	if (lower > upper || upper > max_state)
> >>> -		return -EINVAL;
> >>> -
> >>> -	dev =
> >>> -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
> >>> -	if (!dev)
> >>> -		return -ENOMEM;
> >>> -	dev->tz = tz;
> >>> -	dev->cdev = cdev;
> >>> -	dev->trip = trip;
> >>> -	dev->upper = upper;
> >>> -	dev->lower = lower;
> >>> -	dev->target = THERMAL_NO_TARGET;
> >>> -
> >>> -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
> >>> -	if (result)
> >>> -		goto free_mem;
> >>> -
> >>> -	sprintf(dev->name, "cdev%d", dev->id);
> >>> -	result =
> >>> -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev-
> >name);
> >>> -	if (result)
> >>> -		goto release_idr;
> >>> -
> >>> -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> >>> -	sysfs_attr_init(&dev->attr.attr);
> >>> -	dev->attr.attr.name = dev->attr_name;
> >>> -	dev->attr.attr.mode = 0444;
> >>> -	dev->attr.show = thermal_cooling_device_trip_point_show;
> >>> -	result = device_create_file(&tz->device, &dev->attr);
> >>> -	if (result)
> >>> -		goto remove_symbol_link;
> >>> -
> >>> -	mutex_lock(&tz->lock);
> >>> -	mutex_lock(&cdev->lock);
> >>> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
> >>> -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> >>> -		result = -EEXIST;
> >>> -		break;
> >>> -	}
> >>> -	if (!result) {
> >>> -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
> >>> -		list_add_tail(&dev->cdev_node, &cdev-
> >thermal_instances);
> >>> -	}
> >>> -	mutex_unlock(&cdev->lock);
> >>> -	mutex_unlock(&tz->lock);
> >>> -
> >>> -	if (!result)
> >>> -		return 0;
> >>> -
> >>> -	device_remove_file(&tz->device, &dev->attr);
> >>> -remove_symbol_link:
> >>> -	sysfs_remove_link(&tz->device.kobj, dev->name);
> >>> -release_idr:
> >>> -	release_idr(&tz->idr, &tz->lock, dev->id);
> >>> -free_mem:
> >>> -	kfree(dev);
> >>> -	return result;
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
> >>> -
> >>> -/**
> >>> - * thermal_zone_unbind_cooling_device - unbind a cooling device from
> a thermal zone
> >>> - * @tz:		thermal zone device
> >>> - * @trip:	indicates which trip point the cooling devices is
> >>> - *		associated with in this thermal zone.
> >>> - * @cdev:	thermal cooling device
> >>> - *
> >>> - * This function is usually called in the thermal zone device .unbind
> callback.
> >>> - */
> >>> -int thermal_zone_unbind_cooling_device(struct thermal_zone_device
> *tz,
> >>> -				       int trip,
> >>> -				       struct thermal_cooling_device *cdev)
> >>> -{
> >>> -	struct thermal_instance *pos, *next;
> >>> -
> >>> -	mutex_lock(&tz->lock);
> >>> -	mutex_lock(&cdev->lock);
> >>> -	list_for_each_entry_safe(pos, next, &tz->thermal_instances,
> tz_node) {
> >>> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
> >>> -			list_del(&pos->tz_node);
> >>> -			list_del(&pos->cdev_node);
> >>> -			mutex_unlock(&cdev->lock);
> >>> -			mutex_unlock(&tz->lock);
> >>> -			goto unbind;
> >>> -		}
> >>> -	}
> >>> -	mutex_unlock(&cdev->lock);
> >>> -	mutex_unlock(&tz->lock);
> >>> -
> >>> -	return -ENODEV;
> >>> -
> >>> -unbind:
> >>> -	device_remove_file(&tz->device, &pos->attr);
> >>> -	sysfs_remove_link(&tz->device.kobj, pos->name);
> >>> -	release_idr(&tz->idr, &tz->lock, pos->id);
> >>> -	kfree(pos);
> >>> -	return 0;
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
> >>> -
> >>> -static void thermal_release(struct device *dev)
> >>> -{
> >>> -	struct thermal_zone_device *tz;
> >>> -	struct thermal_cooling_device *cdev;
> >>> -
> >>> -	if (!strncmp(dev_name(dev), "thermal_zone",
> >>> -		     sizeof("thermal_zone") - 1)) {
> >>> -		tz = to_thermal_zone(dev);
> >>> -		kfree(tz);
> >>> -	} else {
> >>> -		cdev = to_cooling_device(dev);
> >>> -		kfree(cdev);
> >>> -	}
> >>> -}
> >>> -
> >>> -static struct class thermal_class = {
> >>> -	.name = "thermal",
> >>> -	.dev_release = thermal_release,
> >>> -};
> >>> -
> >>> -/**
> >>> - * thermal_cooling_device_register - register a new thermal cooling
> device
> >>> - * @type:	the thermal cooling device type.
> >>> - * @devdata:	device private data.
> >>> - * @ops:		standard thermal cooling devices callbacks.
> >>> - */
> >>> -struct thermal_cooling_device *
> >>> -thermal_cooling_device_register(char *type, void *devdata,
> >>> -				const struct thermal_cooling_device_ops
> *ops)
> >>> -{
> >>> -	struct thermal_cooling_device *cdev;
> >>> -	int result;
> >>> -
> >>> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> >>> -		return ERR_PTR(-EINVAL);
> >>> -
> >>> -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
> >>> -	    !ops->set_cur_state)
> >>> -		return ERR_PTR(-EINVAL);
> >>> -
> >>> -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
> >>> -	if (!cdev)
> >>> -		return ERR_PTR(-ENOMEM);
> >>> -
> >>> -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
> >>> -	if (result) {
> >>> -		kfree(cdev);
> >>> -		return ERR_PTR(result);
> >>> -	}
> >>> -
> >>> -	strcpy(cdev->type, type ? : "");
> >>> -	mutex_init(&cdev->lock);
> >>> -	INIT_LIST_HEAD(&cdev->thermal_instances);
> >>> -	cdev->ops = ops;
> >>> -	cdev->updated = true;
> >>> -	cdev->device.class = &thermal_class;
> >>> -	cdev->devdata = devdata;
> >>> -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
> >>> -	result = device_register(&cdev->device);
> >>> -	if (result) {
> >>> -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev-
> >id);
> >>> -		kfree(cdev);
> >>> -		return ERR_PTR(result);
> >>> -	}
> >>> -
> >>> -	/* sys I/F */
> >>> -	if (type) {
> >>> -		result = device_create_file(&cdev->device,
> &dev_attr_cdev_type);
> >>> -		if (result)
> >>> -			goto unregister;
> >>> -	}
> >>> -
> >>> -	result = device_create_file(&cdev->device, &dev_attr_max_state);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -
> >>> -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -
> >>> -	/* Add 'this' new cdev to the global cdev list */
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_add(&cdev->node, &thermal_cdev_list);
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	/* Update binding information for 'this' new cdev */
> >>> -	bind_cdev(cdev);
> >>> -
> >>> -	return cdev;
> >>> -
> >>> -unregister:
> >>> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> >>> -	device_unregister(&cdev->device);
> >>> -	return ERR_PTR(result);
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_cooling_device_register);
> >>> -
> >>> -/**
> >>> - * thermal_cooling_device_unregister - removes the registered thermal
> cooling device
> >>> - * @cdev:	the thermal cooling device to remove.
> >>> - *
> >>> - * thermal_cooling_device_unregister() must be called when the device
> is no
> >>> - * longer needed.
> >>> - */
> >>> -void thermal_cooling_device_unregister(struct thermal_cooling_device
> *cdev)
> >>> -{
> >>> -	int i;
> >>> -	const struct thermal_zone_params *tzp;
> >>> -	struct thermal_zone_device *tz;
> >>> -	struct thermal_cooling_device *pos = NULL;
> >>> -
> >>> -	if (!cdev)
> >>> -		return;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_for_each_entry(pos, &thermal_cdev_list, node)
> >>> -	    if (pos == cdev)
> >>> -		break;
> >>> -	if (pos != cdev) {
> >>> -		/* thermal cooling device not found */
> >>> -		mutex_unlock(&thermal_list_lock);
> >>> -		return;
> >>> -	}
> >>> -	list_del(&cdev->node);
> >>> -
> >>> -	/* Unbind all thermal zones associated with 'this' cdev */
> >>> -	list_for_each_entry(tz, &thermal_tz_list, node) {
> >>> -		if (tz->ops->unbind) {
> >>> -			tz->ops->unbind(tz, cdev);
> >>> -			continue;
> >>> -		}
> >>> -
> >>> -		if (!tz->tzp || !tz->tzp->tbp)
> >>> -			continue;
> >>> -
> >>> -		tzp = tz->tzp;
> >>> -		for (i = 0; i < tzp->num_tbps; i++) {
> >>> -			if (tzp->tbp[i].cdev == cdev) {
> >>> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> >>> -				tzp->tbp[i].cdev = NULL;
> >>> -			}
> >>> -		}
> >>> -	}
> >>> -
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	if (cdev->type[0])
> >>> -		device_remove_file(&cdev->device, &dev_attr_cdev_type);
> >>> -	device_remove_file(&cdev->device, &dev_attr_max_state);
> >>> -	device_remove_file(&cdev->device, &dev_attr_cur_state);
> >>> -
> >>> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
> >>> -	device_unregister(&cdev->device);
> >>> -	return;
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_cooling_device_unregister);
> >>> -
> >>> -void thermal_cdev_update(struct thermal_cooling_device *cdev)
> >>> -{
> >>> -	struct thermal_instance *instance;
> >>> -	unsigned long target = 0;
> >>> -
> >>> -	/* cooling device is updated*/
> >>> -	if (cdev->updated)
> >>> -		return;
> >>> -
> >>> -	mutex_lock(&cdev->lock);
> >>> -	/* Make sure cdev enters the deepest cooling state */
> >>> -	list_for_each_entry(instance, &cdev->thermal_instances,
> cdev_node) {
> >>> -		if (instance->target == THERMAL_NO_TARGET)
> >>> -			continue;
> >>> -		if (instance->target > target)
> >>> -			target = instance->target;
> >>> -	}
> >>> -	mutex_unlock(&cdev->lock);
> >>> -	cdev->ops->set_cur_state(cdev, target);
> >>> -	cdev->updated = true;
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_cdev_update);
> >>> -
> >>> -/**
> >>> - * notify_thermal_framework - Sensor drivers use this API to notify
> framework
> >>> - * @tz:		thermal zone device
> >>> - * @trip:	indicates which trip point has been crossed
> >>> - *
> >>> - * This function handles the trip events from sensor drivers. It starts
> >>> - * throttling the cooling devices according to the policy configured.
> >>> - * For CRITICAL and HOT trip points, this notifies the respective drivers,
> >>> - * and does actual throttling for other trip points i.e ACTIVE and
> PASSIVE.
> >>> - * The throttling policy is based on the configured platform data; if no
> >>> - * platform data is provided, this uses the step_wise throttling policy.
> >>> - */
> >>> -void notify_thermal_framework(struct thermal_zone_device *tz, int
> trip)
> >>> -{
> >>> -	handle_thermal_trip(tz, trip);
> >>> -}
> >>> -EXPORT_SYMBOL(notify_thermal_framework);
> >>> -
> >>> -/**
> >>> - * create_trip_attrs - create attributes for trip points
> >>> - * @tz:		the thermal zone device
> >>> - * @mask:	Writeable trip point bitmap.
> >>> - */
> >>> -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
> >>> -{
> >>> -	int indx;
> >>> -	int size = sizeof(struct thermal_attr) * tz->trips;
> >>> -
> >>> -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
> >>> -	if (!tz->trip_type_attrs)
> >>> -		return -ENOMEM;
> >>> -
> >>> -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
> >>> -	if (!tz->trip_temp_attrs) {
> >>> -		kfree(tz->trip_type_attrs);
> >>> -		return -ENOMEM;
> >>> -	}
> >>> -
> >>> -	if (tz->ops->get_trip_hyst) {
> >>> -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
> >>> -		if (!tz->trip_hyst_attrs) {
> >>> -			kfree(tz->trip_type_attrs);
> >>> -			kfree(tz->trip_temp_attrs);
> >>> -			return -ENOMEM;
> >>> -		}
> >>> -	}
> >>> -
> >>> -
> >>> -	for (indx = 0; indx < tz->trips; indx++) {
> >>> -		/* create trip type attribute */
> >>> -		snprintf(tz->trip_type_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> >>> -			 "trip_point_%d_type", indx);
> >>> -
> >>> -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
> >>> -		tz->trip_type_attrs[indx].attr.attr.name =
> >>> -						tz-
> >trip_type_attrs[indx].name;
> >>> -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
> >>> -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
> >>> -
> >>> -		device_create_file(&tz->device,
> >>> -				   &tz->trip_type_attrs[indx].attr);
> >>> -
> >>> -		/* create trip temp attribute */
> >>> -		snprintf(tz->trip_temp_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> >>> -			 "trip_point_%d_temp", indx);
> >>> -
> >>> -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
> >>> -		tz->trip_temp_attrs[indx].attr.attr.name =
> >>> -						tz-
> >trip_temp_attrs[indx].name;
> >>> -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
> >>> -		tz->trip_temp_attrs[indx].attr.show =
> trip_point_temp_show;
> >>> -		if (mask & (1 << indx)) {
> >>> -			tz->trip_temp_attrs[indx].attr.attr.mode |=
> S_IWUSR;
> >>> -			tz->trip_temp_attrs[indx].attr.store =
> >>> -
> 	trip_point_temp_store;
> >>> -		}
> >>> -
> >>> -		device_create_file(&tz->device,
> >>> -				   &tz->trip_temp_attrs[indx].attr);
> >>> -
> >>> -		/* create Optional trip hyst attribute */
> >>> -		if (!tz->ops->get_trip_hyst)
> >>> -			continue;
> >>> -		snprintf(tz->trip_hyst_attrs[indx].name,
> THERMAL_NAME_LENGTH,
> >>> -			 "trip_point_%d_hyst", indx);
> >>> -
> >>> -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
> >>> -		tz->trip_hyst_attrs[indx].attr.attr.name =
> >>> -					tz->trip_hyst_attrs[indx].name;
> >>> -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
> >>> -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
> >>> -		if (tz->ops->set_trip_hyst) {
> >>> -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
> >>> -			tz->trip_hyst_attrs[indx].attr.store =
> >>> -					trip_point_hyst_store;
> >>> -		}
> >>> -
> >>> -		device_create_file(&tz->device,
> >>> -				   &tz->trip_hyst_attrs[indx].attr);
> >>> -	}
> >>> -	return 0;
> >>> -}
> >>> -
> >>> -static void remove_trip_attrs(struct thermal_zone_device *tz)
> >>> -{
> >>> -	int indx;
> >>> -
> >>> -	for (indx = 0; indx < tz->trips; indx++) {
> >>> -		device_remove_file(&tz->device,
> >>> -				   &tz->trip_type_attrs[indx].attr);
> >>> -		device_remove_file(&tz->device,
> >>> -				   &tz->trip_temp_attrs[indx].attr);
> >>> -		if (tz->ops->get_trip_hyst)
> >>> -			device_remove_file(&tz->device,
> >>> -				  &tz->trip_hyst_attrs[indx].attr);
> >>> -	}
> >>> -	kfree(tz->trip_type_attrs);
> >>> -	kfree(tz->trip_temp_attrs);
> >>> -	kfree(tz->trip_hyst_attrs);
> >>> -}
> >>> -
> >>> -/**
> >>> - * thermal_zone_device_register - register a new thermal zone device
> >>> - * @type:	the thermal zone device type
> >>> - * @trips:	the number of trip points the thermal zone support
> >>> - * @mask:	a bit string indicating the writeablility of trip points
> >>> - * @devdata:	private device data
> >>> - * @ops:	standard thermal zone device callbacks
> >>> - * @tzp:	thermal zone platform parameters
> >>> - * @passive_delay: number of milliseconds to wait between polls when
> >>> - *		   performing passive cooling
> >>> - * @polling_delay: number of milliseconds to wait between polls when
> checking
> >>> - *		   whether trip points have been crossed (0 for interrupt
> >>> - *		   driven systems)
> >>> - *
> >>> - * thermal_zone_device_unregister() must be called when the device is
> no
> >>> - * longer needed. The passive cooling depends on the .get_trend()
> return value.
> >>> - */
> >>> -struct thermal_zone_device *thermal_zone_device_register(const
> char *type,
> >>> -	int trips, int mask, void *devdata,
> >>> -	const struct thermal_zone_device_ops *ops,
> >>> -	const struct thermal_zone_params *tzp,
> >>> -	int passive_delay, int polling_delay)
> >>> -{
> >>> -	struct thermal_zone_device *tz;
> >>> -	enum thermal_trip_type trip_type;
> >>> -	int result;
> >>> -	int count;
> >>> -	int passive = 0;
> >>> -
> >>> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
> >>> -		return ERR_PTR(-EINVAL);
> >>> -
> >>> -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
> >>> -		return ERR_PTR(-EINVAL);
> >>> -
> >>> -	if (!ops || !ops->get_temp)
> >>> -		return ERR_PTR(-EINVAL);
> >>> -
> >>> -	if (trips > 0 && !ops->get_trip_type)
> >>> -		return ERR_PTR(-EINVAL);
> >>> -
> >>> -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
> >>> -	if (!tz)
> >>> -		return ERR_PTR(-ENOMEM);
> >>> -
> >>> -	INIT_LIST_HEAD(&tz->thermal_instances);
> >>> -	idr_init(&tz->idr);
> >>> -	mutex_init(&tz->lock);
> >>> -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
> >>> -	if (result) {
> >>> -		kfree(tz);
> >>> -		return ERR_PTR(result);
> >>> -	}
> >>> -
> >>> -	strcpy(tz->type, type ? : "");
> >>> -	tz->ops = ops;
> >>> -	tz->tzp = tzp;
> >>> -	tz->device.class = &thermal_class;
> >>> -	tz->devdata = devdata;
> >>> -	tz->trips = trips;
> >>> -	tz->passive_delay = passive_delay;
> >>> -	tz->polling_delay = polling_delay;
> >>> -
> >>> -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
> >>> -	result = device_register(&tz->device);
> >>> -	if (result) {
> >>> -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >>> -		kfree(tz);
> >>> -		return ERR_PTR(result);
> >>> -	}
> >>> -
> >>> -	/* sys I/F */
> >>> -	if (type) {
> >>> -		result = device_create_file(&tz->device, &dev_attr_type);
> >>> -		if (result)
> >>> -			goto unregister;
> >>> -	}
> >>> -
> >>> -	result = device_create_file(&tz->device, &dev_attr_temp);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -
> >>> -	if (ops->get_mode) {
> >>> -		result = device_create_file(&tz->device, &dev_attr_mode);
> >>> -		if (result)
> >>> -			goto unregister;
> >>> -	}
> >>> -
> >>> -	result = create_trip_attrs(tz, mask);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -
> >>> -	for (count = 0; count < trips; count++) {
> >>> -		tz->ops->get_trip_type(tz, count, &trip_type);
> >>> -		if (trip_type == THERMAL_TRIP_PASSIVE)
> >>> -			passive = 1;
> >>> -	}
> >>> -
> >>> -	if (!passive) {
> >>> -		result = device_create_file(&tz->device, &dev_attr_passive);
> >>> -		if (result)
> >>> -			goto unregister;
> >>> -	}
> >>> -
> >>> -#ifdef CONFIG_THERMAL_EMULATION
> >>> -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -#endif
> >>> -	/* Create policy attribute */
> >>> -	result = device_create_file(&tz->device, &dev_attr_policy);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -
> >>> -	/* Update 'this' zone's governor information */
> >>> -	mutex_lock(&thermal_governor_lock);
> >>> -
> >>> -	if (tz->tzp)
> >>> -		tz->governor = __find_governor(tz->tzp->governor_name);
> >>> -	else
> >>> -		tz->governor =
> __find_governor(DEFAULT_THERMAL_GOVERNOR);
> >>> -
> >>> -	mutex_unlock(&thermal_governor_lock);
> >>> -
> >>> -	result = thermal_add_hwmon_sysfs(tz);
> >>> -	if (result)
> >>> -		goto unregister;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_add_tail(&tz->node, &thermal_tz_list);
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	/* Bind cooling devices for this zone */
> >>> -	bind_tz(tz);
> >>> -
> >>> -	INIT_DELAYED_WORK(&(tz->poll_queue),
> thermal_zone_device_check);
> >>> -
> >>> -	thermal_zone_device_update(tz);
> >>> -
> >>> -	if (!result)
> >>> -		return tz;
> >>> -
> >>> -unregister:
> >>> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >>> -	device_unregister(&tz->device);
> >>> -	return ERR_PTR(result);
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_zone_device_register);
> >>> -
> >>> -/**
> >>> - * thermal_device_unregister - removes the registered thermal zone
> device
> >>> - * @tz: the thermal zone device to remove
> >>> - */
> >>> -void thermal_zone_device_unregister(struct thermal_zone_device *tz)
> >>> -{
> >>> -	int i;
> >>> -	const struct thermal_zone_params *tzp;
> >>> -	struct thermal_cooling_device *cdev;
> >>> -	struct thermal_zone_device *pos = NULL;
> >>> -
> >>> -	if (!tz)
> >>> -		return;
> >>> -
> >>> -	tzp = tz->tzp;
> >>> -
> >>> -	mutex_lock(&thermal_list_lock);
> >>> -	list_for_each_entry(pos, &thermal_tz_list, node)
> >>> -	    if (pos == tz)
> >>> -		break;
> >>> -	if (pos != tz) {
> >>> -		/* thermal zone device not found */
> >>> -		mutex_unlock(&thermal_list_lock);
> >>> -		return;
> >>> -	}
> >>> -	list_del(&tz->node);
> >>> -
> >>> -	/* Unbind all cdevs associated with 'this' thermal zone */
> >>> -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
> >>> -		if (tz->ops->unbind) {
> >>> -			tz->ops->unbind(tz, cdev);
> >>> -			continue;
> >>> -		}
> >>> -
> >>> -		if (!tzp || !tzp->tbp)
> >>> -			break;
> >>> -
> >>> -		for (i = 0; i < tzp->num_tbps; i++) {
> >>> -			if (tzp->tbp[i].cdev == cdev) {
> >>> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
> >>> -				tzp->tbp[i].cdev = NULL;
> >>> -			}
> >>> -		}
> >>> -	}
> >>> -
> >>> -	mutex_unlock(&thermal_list_lock);
> >>> -
> >>> -	thermal_zone_device_set_polling(tz, 0);
> >>> -
> >>> -	if (tz->type[0])
> >>> -		device_remove_file(&tz->device, &dev_attr_type);
> >>> -	device_remove_file(&tz->device, &dev_attr_temp);
> >>> -	if (tz->ops->get_mode)
> >>> -		device_remove_file(&tz->device, &dev_attr_mode);
> >>> -	device_remove_file(&tz->device, &dev_attr_policy);
> >>> -	remove_trip_attrs(tz);
> >>> -	tz->governor = NULL;
> >>> -
> >>> -	thermal_remove_hwmon_sysfs(tz);
> >>> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >>> -	idr_destroy(&tz->idr);
> >>> -	mutex_destroy(&tz->lock);
> >>> -	device_unregister(&tz->device);
> >>> -	return;
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_zone_device_unregister);
> >>> -
> >>> -#ifdef CONFIG_NET
> >>> -static struct genl_family thermal_event_genl_family = {
> >>> -	.id = GENL_ID_GENERATE,
> >>> -	.name = THERMAL_GENL_FAMILY_NAME,
> >>> -	.version = THERMAL_GENL_VERSION,
> >>> -	.maxattr = THERMAL_GENL_ATTR_MAX,
> >>> -};
> >>> -
> >>> -static struct genl_multicast_group thermal_event_mcgrp = {
> >>> -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
> >>> -};
> >>> -
> >>> -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
> >>> -					enum events event)
> >>> -{
> >>> -	struct sk_buff *skb;
> >>> -	struct nlattr *attr;
> >>> -	struct thermal_genl_event *thermal_event;
> >>> -	void *msg_header;
> >>> -	int size;
> >>> -	int result;
> >>> -	static unsigned int thermal_event_seqnum;
> >>> -
> >>> -	if (!tz)
> >>> -		return -EINVAL;
> >>> -
> >>> -	/* allocate memory */
> >>> -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
> >>> -	       nla_total_size(0);
> >>> -
> >>> -	skb = genlmsg_new(size, GFP_ATOMIC);
> >>> -	if (!skb)
> >>> -		return -ENOMEM;
> >>> -
> >>> -	/* add the genetlink message header */
> >>> -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
> >>> -				 &thermal_event_genl_family, 0,
> >>> -				 THERMAL_GENL_CMD_EVENT);
> >>> -	if (!msg_header) {
> >>> -		nlmsg_free(skb);
> >>> -		return -ENOMEM;
> >>> -	}
> >>> -
> >>> -	/* fill the data */
> >>> -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
> >>> -			   sizeof(struct thermal_genl_event));
> >>> -
> >>> -	if (!attr) {
> >>> -		nlmsg_free(skb);
> >>> -		return -EINVAL;
> >>> -	}
> >>> -
> >>> -	thermal_event = nla_data(attr);
> >>> -	if (!thermal_event) {
> >>> -		nlmsg_free(skb);
> >>> -		return -EINVAL;
> >>> -	}
> >>> -
> >>> -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
> >>> -
> >>> -	thermal_event->orig = tz->id;
> >>> -	thermal_event->event = event;
> >>> -
> >>> -	/* send multicast genetlink message */
> >>> -	result = genlmsg_end(skb, msg_header);
> >>> -	if (result < 0) {
> >>> -		nlmsg_free(skb);
> >>> -		return result;
> >>> -	}
> >>> -
> >>> -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id,
> GFP_ATOMIC);
> >>> -	if (result)
> >>> -		dev_err(&tz->device, "Failed to send netlink event:%d",
> result);
> >>> -
> >>> -	return result;
> >>> -}
> >>> -EXPORT_SYMBOL(thermal_generate_netlink_event);
> >>> -
> >>> -static int genetlink_init(void)
> >>> -{
> >>> -	int result;
> >>> -
> >>> -	result = genl_register_family(&thermal_event_genl_family);
> >>> -	if (result)
> >>> -		return result;
> >>> -
> >>> -	result = genl_register_mc_group(&thermal_event_genl_family,
> >>> -					&thermal_event_mcgrp);
> >>> -	if (result)
> >>> -		genl_unregister_family(&thermal_event_genl_family);
> >>> -	return result;
> >>> -}
> >>> -
> >>> -static void genetlink_exit(void)
> >>> -{
> >>> -	genl_unregister_family(&thermal_event_genl_family);
> >>> -}
> >>> -#else /* !CONFIG_NET */
> >>> -static inline int genetlink_init(void) { return 0; }
> >>> -static inline void genetlink_exit(void) {}
> >>> -#endif /* !CONFIG_NET */
> >>> -
> >>> -static int __init thermal_init(void)
> >>> -{
> >>> -	int result = 0;
> >>> -
> >>> -	result = class_register(&thermal_class);
> >>> -	if (result) {
> >>> -		idr_destroy(&thermal_tz_idr);
> >>> -		idr_destroy(&thermal_cdev_idr);
> >>> -		mutex_destroy(&thermal_idr_lock);
> >>> -		mutex_destroy(&thermal_list_lock);
> >>> -		return result;
> >>> -	}
> >>> -	result = genetlink_init();
> >>> -	return result;
> >>> -}
> >>> -
> >>> -static void __exit thermal_exit(void)
> >>> -{
> >>> -	class_unregister(&thermal_class);
> >>> -	idr_destroy(&thermal_tz_idr);
> >>> -	idr_destroy(&thermal_cdev_idr);
> >>> -	mutex_destroy(&thermal_idr_lock);
> >>> -	mutex_destroy(&thermal_list_lock);
> >>> -	genetlink_exit();
> >>> -}
> >>> -
> >>> -fs_initcall(thermal_init);
> >>> -module_exit(thermal_exit);
> >>>
> >>
> >
> >
> >
> >