From: Zhang Rui <rui.zhang@intel.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>,
Matthew Garrett <mjg@redhat.com>, Len Brown <lenb@kernel.org>,
R Durgadoss <durgadoss.r@intel.com>,
Eduardo Valentin <eduardo.valentin@ti.com>,
Amit Kachhap <amit.kachhap@linaro.org>, Wei Ni <wni@nvidia.com>,
Zhang Rui <rui.zhang@intel.com>
Cc: linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH V4 03/13] Thermal: set upper and lower limits
Date: Thu, 26 Jul 2012 16:41:13 +0800 [thread overview]
Message-ID: <1343292083-2047-4-git-send-email-rui.zhang@intel.com> (raw)
In-Reply-To: <1343292083-2047-1-git-send-email-rui.zhang@intel.com>
set upper and lower limits when binding
a thermal cooling device to a thermal zone device.
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
Documentation/thermal/sysfs-api.txt | 9 +++++-
drivers/acpi/thermal.c | 53 +++++++++++++++++++++++------------
drivers/platform/x86/acerhdf.c | 3 +-
drivers/thermal/thermal_sys.c | 23 ++++++++++-----
include/linux/thermal.h | 5 +++-
5 files changed, 65 insertions(+), 28 deletions(-)
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index c087dbc..ca1a1a3 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -84,7 +84,8 @@ temperature) and throttle appropriate devices.
1.3 interface for binding a thermal zone device with a thermal cooling device
1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
- int trip, struct thermal_cooling_device *cdev);
+ int trip, struct thermal_cooling_device *cdev,
+ unsigned long upper, unsigned long lower);
This interface function bind a thermal cooling device to the certain trip
point of a thermal zone device.
@@ -93,6 +94,12 @@ temperature) and throttle appropriate devices.
cdev: thermal cooling device
trip: indicates which trip point the cooling devices is associated with
in this thermal zone.
+ upper:the Maximum cooling state for this trip point.
+ THERMAL_NO_LIMIT means no upper limit,
+ and the cooling device can be in max_state.
+ lower:the Minimum cooling state can be used for this trip point.
+ THERMAL_NO_LIMIT means no lower limit,
+ and the cooling device can be in cooling state 0.
1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 8275e7b..b48ec3e 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -727,11 +727,9 @@ static int thermal_notify(struct thermal_zone_device *thermal, int trip,
return 0;
}
-typedef int (*cb)(struct thermal_zone_device *, int,
- struct thermal_cooling_device *);
static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev,
- cb action)
+ bool bind)
{
struct acpi_device *device = cdev->devdata;
struct acpi_thermal *tz = thermal->devdata;
@@ -755,11 +753,19 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
i++) {
handle = tz->trips.passive.devices.handles[i];
status = acpi_bus_get_device(handle, &dev);
- if (ACPI_SUCCESS(status) && (dev == device)) {
- result = action(thermal, trip, cdev);
- if (result)
- goto failed;
- }
+ if (ACPI_FAILURE(status) || dev != device)
+ continue;
+ if (bind)
+ result =
+ thermal_zone_bind_cooling_device
+ (thermal, trip, cdev,
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
+ else
+ result =
+ thermal_zone_unbind_cooling_device
+ (thermal, trip, cdev);
+ if (result)
+ goto failed;
}
}
@@ -772,11 +778,17 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
j++) {
handle = tz->trips.active[i].devices.handles[j];
status = acpi_bus_get_device(handle, &dev);
- if (ACPI_SUCCESS(status) && (dev == device)) {
- result = action(thermal, trip, cdev);
- if (result)
- goto failed;
- }
+ if (ACPI_FAILURE(status) || dev != device)
+ continue;
+ if (bind)
+ result = thermal_zone_bind_cooling_device
+ (thermal, trip, cdev,
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
+ else
+ result = thermal_zone_unbind_cooling_device
+ (thermal, trip, cdev);
+ if (result)
+ goto failed;
}
}
@@ -784,7 +796,14 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
handle = tz->devices.handles[i];
status = acpi_bus_get_device(handle, &dev);
if (ACPI_SUCCESS(status) && (dev == device)) {
- result = action(thermal, -1, cdev);
+ if (bind)
+ result = thermal_zone_bind_cooling_device
+ (thermal, -1, cdev,
+ THERMAL_NO_LIMIT,
+ THERMAL_NO_LIMIT);
+ else
+ result = thermal_zone_unbind_cooling_device
+ (thermal, -1, cdev);
if (result)
goto failed;
}
@@ -798,16 +817,14 @@ static int
acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev)
{
- return acpi_thermal_cooling_device_cb(thermal, cdev,
- thermal_zone_bind_cooling_device);
+ return acpi_thermal_cooling_device_cb(thermal, cdev, true);
}
static int
acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev)
{
- return acpi_thermal_cooling_device_cb(thermal, cdev,
- thermal_zone_unbind_cooling_device);
+ return acpi_thermal_cooling_device_cb(thermal, cdev, false);
}
static const struct thermal_zone_device_ops acpi_thermal_zone_ops = {
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 39abb15..a207466 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -329,7 +329,8 @@ static int acerhdf_bind(struct thermal_zone_device *thermal,
if (cdev != cl_dev)
return 0;
- if (thermal_zone_bind_cooling_device(thermal, 0, cdev)) {
+ if (thermal_zone_bind_cooling_device(thermal, 0, cdev,
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT)) {
pr_err("error binding cooling dev\n");
return -EINVAL;
}
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 008e2eb..62b4279 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -315,8 +315,9 @@ passive_store(struct device *dev, struct device_attribute *attr,
if (!strncmp("Processor", cdev->type,
sizeof("Processor")))
thermal_zone_bind_cooling_device(tz,
- THERMAL_TRIPS_NONE,
- cdev);
+ THERMAL_TRIPS_NONE, cdev,
+ THERMAL_NO_LIMIT,
+ THERMAL_NO_LIMIT);
}
mutex_unlock(&thermal_list_lock);
if (!tz->passive_delay)
@@ -801,7 +802,8 @@ static void thermal_zone_device_check(struct work_struct *work)
*/
int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
int trip,
- struct thermal_cooling_device *cdev)
+ struct thermal_cooling_device *cdev,
+ unsigned long upper, unsigned long lower)
{
struct thermal_cooling_device_instance *dev;
struct thermal_cooling_device_instance *pos;
@@ -825,6 +827,15 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
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_cooling_device_instance), GFP_KERNEL);
if (!dev)
@@ -832,10 +843,8 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
dev->tz = tz;
dev->cdev = cdev;
dev->trip = trip;
-
- cdev->ops->get_max_state(cdev, &max_state);
- dev->upper = max_state;
- dev->lower = 0;
+ dev->upper = upper;
+ dev->lower = lower;
result = get_idr(&tz->idr, &tz->lock, &dev->id);
if (result)
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index cfc8d90..a43b12c 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -75,6 +75,8 @@ struct thermal_cooling_device_ops {
int (*set_cur_state) (struct thermal_cooling_device *, unsigned long);
};
+#define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */
+
#define THERMAL_TRIPS_NONE -1
#define THERMAL_MAX_TRIPS 12
#define THERMAL_NAME_LENGTH 20
@@ -157,7 +159,8 @@ struct thermal_zone_device *thermal_zone_device_register(char *, int, int,
void thermal_zone_device_unregister(struct thermal_zone_device *);
int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
- struct thermal_cooling_device *);
+ struct thermal_cooling_device *,
+ unsigned long, unsigned long);
int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
void thermal_zone_device_update(struct thermal_zone_device *);
--
1.7.9.5
next prev parent reply other threads:[~2012-07-26 8:41 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-26 8:41 [PATCH V4 00/13] Thermal: generic thermal layer enhancement Zhang Rui
2012-07-26 8:41 ` [PATCH V4 01/13] Thermal: Introduce multiple cooling states support Zhang Rui
2012-08-08 12:02 ` Valentin, Eduardo
2012-08-09 0:58 ` Zhang Rui
2012-07-26 8:41 ` [PATCH V4 02/13] Thermal: Introduce cooling states range support Zhang Rui
2012-08-20 15:51 ` Eduardo Valentin
2012-07-26 8:41 ` Zhang Rui [this message]
2012-08-20 15:50 ` [PATCH V4 03/13] Thermal: set upper and lower limits Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 04/13] Thermal: Introduce .get_trend() callback Zhang Rui
2012-07-26 20:11 ` Rafael J. Wysocki
2012-08-01 2:42 ` Zhang Rui
2012-08-08 13:46 ` Valentin, Eduardo
2012-08-08 13:44 ` Valentin, Eduardo
2012-07-26 8:41 ` [PATCH V4 05/13] Thermal: Remove tc1/tc2 in generic thermal layer Zhang Rui
2012-07-26 20:11 ` Rafael J. Wysocki
2012-08-08 14:06 ` Valentin, Eduardo
2012-08-09 0:57 ` Zhang Rui
2012-08-09 8:05 ` Valentin, Eduardo
2012-08-09 15:10 ` Valentin, Eduardo
2012-08-20 12:18 ` Eduardo Valentin
2012-08-21 0:49 ` Zhang Rui
2012-08-21 14:20 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 06/13] Thermal: Introduce thermal_zone_trip_update() Zhang Rui
2012-07-26 20:12 ` Rafael J. Wysocki
2012-08-20 15:47 ` Eduardo Valentin
2012-08-20 15:48 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 07/13] Thermal: rename structure thermal_cooling_device_instance to thermal_instance Zhang Rui
2012-08-20 15:47 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 08/13] Thermal: Rename thermal_zone_device.cooling_devices Zhang Rui
2012-08-20 15:47 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 09/13] Thermal: Rename thermal_instance.node to thermal_instance.tz_node Zhang Rui
2012-08-20 15:47 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 10/13] Thermal: List thermal_instance in thermal_cooling_device Zhang Rui
2012-08-20 15:46 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 11/13] Thermal: Introduce simple arbitrator for setting device cooling state Zhang Rui
2012-08-20 15:46 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 12/13] Thermal: Unify the code for both active and passive cooling Zhang Rui
2012-08-20 15:45 ` Eduardo Valentin
2012-07-26 8:41 ` [PATCH V4 13/13] Thermal: Introduce locking for cdev.thermal_instances list Zhang Rui
2012-07-26 20:13 ` Rafael J. Wysocki
2012-08-20 15:45 ` Eduardo Valentin
2012-08-21 0:53 ` Zhang Rui
2012-08-21 5:01 ` Eduardo Valentin
2012-08-20 15:53 ` [PATCH V4 00/13] Thermal: generic thermal layer enhancement Eduardo Valentin
2012-08-21 5:10 ` Eduardo Valentin
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