[PATCH v4 15/17] thermal: samsung: core: Exynos TMU rework to use device tree for configuration

Lukasz Majewski
2015-01-16T11:33:46Z

This patch brings support for providing configuration via device tree.
Previously this data has been hardcoded in the exynos_tmu_data.c file.
Such approach was not scalable and very often required copying the whole
data.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
---
Changes for v2:
- Adjust exynos_tmu.c code to the newest ti-soc-thermal repository
- Usage of of-thermal.c exported trip points table
Changes for v3:
- Adding exynos_of_get_soc_type() method to set SOC type from device's
compatible string
- "samsung,tmu_" prefix for TMU specific properties has been added
Changes for v4:
- None

---
drivers/thermal/samsung/Makefile | 2 -
drivers/thermal/samsung/exynos_tmu.c | 345 +++++++++++++++++++++++------------
drivers/thermal/samsung/exynos_tmu.h | 53 +-----
3 files changed, 226 insertions(+), 174 deletions(-)

diff --git a/drivers/thermal/samsung/Makefile b/drivers/thermal/samsung/Makefile
index c09d830..1e47d0d 100644
--- a/drivers/thermal/samsung/Makefile
+++ b/drivers/thermal/samsung/Makefile
@@ -3,5 +3,3 @@
#
obj-$(CONFIG_EXYNOS_THERMAL) += exynos_thermal.o
exynos_thermal-y := exynos_tmu.o
-exynos_thermal-y += exynos_tmu_data.o
-exynos_thermal-$(CONFIG_EXYNOS_THERMAL_CORE) += exynos_thermal_common.o
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index ae30f6a..633a9e2 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -1,6 +1,10 @@
/*
* exynos_tmu.c - Samsung EXYNOS TMU (Thermal Management Unit)
*
+ * Copyright (C) 2014 Samsung Electronics
+ * Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
+ * Lukasz Majewski <l.majewski@samsung.com>
+ *
* Copyright (C) 2011 Samsung Electronics
* Donggeun Kim <dg77.kim@samsung.com>
* Amit Daniel Kachhap <amit.kachhap@linaro.org>
@@ -31,8 +35,8 @@
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>

-#include "exynos_thermal_common.h"
#include "exynos_tmu.h"
+#include "../thermal_core.h"

/* Exynos generic registers */
#define EXYNOS_TMU_REG_TRIMINFO 0x0
@@ -115,6 +119,7 @@
#define EXYNOS5440_TMU_TH_RISE4_SHIFT 24
#define EXYNOS5440_EFUSE_SWAP_OFFSET 8

+#define MCELSIUS 1000
/**
* struct exynos_tmu_data : A structure to hold the private data of the TMU
driver
@@ -150,7 +155,8 @@ struct exynos_tmu_data {
struct clk *clk, *clk_sec;
u8 temp_error1, temp_error2;
struct regulator *regulator;
- struct thermal_sensor_conf *reg_conf;
+ struct thermal_zone_device *tzd;
+
int (*tmu_initialize)(struct platform_device *pdev);
void (*tmu_control)(struct platform_device *pdev, bool on);
int (*tmu_read)(struct exynos_tmu_data *data);
@@ -159,6 +165,33 @@ struct exynos_tmu_data {
void (*tmu_clear_irqs)(struct exynos_tmu_data *data);
};

+static void exynos_report_trigger(struct exynos_tmu_data *p)
+{
+ char data[10], *envp[] = { data, NULL };
+ struct thermal_zone_device *tz = p->tzd;
+ unsigned long temp;
+ unsigned int i;
+
+ if (!p) {
+ pr_err("Wrong temperature configuration data\n");
+ return;
+ }
+
+ thermal_zone_device_update(tz);
+
+ mutex_lock(&tz->lock);
+ /* Find the level for which trip happened */
+ for (i = 0; i < of_thermal_get_ntrips(tz); i++) {
+ tz->ops->get_trip_temp(tz, i, &temp);
+ if (tz->last_temperature < temp)
+ break;
+ }
+
+ snprintf(data, sizeof(data), "%u", i);
+ kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, envp);
+ mutex_unlock(&tz->lock);
+}
+
/*
* TMU treats temperature as a mapped temperature code.
* The temperature is converted differently depending on the calibration type.
@@ -234,14 +267,25 @@ static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info)

static u32 get_th_reg(struct exynos_tmu_data *data, u32 threshold, bool falling)
{
- struct exynos_tmu_platform_data *pdata = data->pdata;
+ struct thermal_zone_device *tz = data->tzd;
+ const struct thermal_trip * const trips =
+ of_thermal_get_trip_points(tz);
+ unsigned long temp;
int i;

- for (i = 0; i < pdata->non_hw_trigger_levels; i++) {
- u8 temp = pdata->trigger_levels[i];
+ if (!trips) {
+ pr_err("%s: Cannot get trip points from of-thermal.c!\n",
+ __func__);
+ return 0;
+ }
+
+ for (i = 0; i < of_thermal_get_ntrips(tz); i++) {
+ if (trips[i].type == THERMAL_TRIP_CRITICAL)
+ continue;

+ temp = trips[i].temperature / MCELSIUS;
if (falling)
- temp -= pdata->threshold_falling;
+ temp -= (trips[i].hysteresis / MCELSIUS);
else
threshold &= ~(0xff << 8 * i);

@@ -305,9 +349,19 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on)
static int exynos4210_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct exynos_tmu_platform_data *pdata = data->pdata;
- unsigned int status;
+ struct thermal_zone_device *tz = data->tzd;
+ const struct thermal_trip * const trips =
+ of_thermal_get_trip_points(tz);
int ret = 0, threshold_code, i;
+ unsigned long reference, temp;
+ unsigned int status;
+
+ if (!trips) {
+ pr_err("%s: Cannot get trip points from of-thermal.c!\n",
+ __func__);
+ ret = -ENODEV;
+ goto out;
+ }

status = readb(data->base + EXYNOS_TMU_REG_STATUS);
if (!status) {
@@ -318,12 +372,19 @@ static int exynos4210_tmu_initialize(struct platform_device *pdev)
sanitize_temp_error(data, readl(data->base + EXYNOS_TMU_REG_TRIMINFO));

/* Write temperature code for threshold */
- threshold_code = temp_to_code(data, pdata->threshold);
+ reference = trips[0].temperature / MCELSIUS;
+ threshold_code = temp_to_code(data, reference);
+ if (threshold_code < 0) {
+ ret = threshold_code;
+ goto out;
+ }
writeb(threshold_code, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);

- for (i = 0; i < pdata->non_hw_trigger_levels; i++)
- writeb(pdata->trigger_levels[i], data->base +
+ for (i = 0; i < of_thermal_get_ntrips(tz); i++) {
+ temp = trips[i].temperature / MCELSIUS;
+ writeb(temp - reference, data->base +
EXYNOS4210_TMU_REG_TRIG_LEVEL0 + i * 4);
+ }

data->tmu_clear_irqs(data);
out:
@@ -333,9 +394,11 @@ out:
static int exynos4412_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct exynos_tmu_platform_data *pdata = data->pdata;
+ const struct thermal_trip * const trips =
+ of_thermal_get_trip_points(data->tzd);
unsigned int status, trim_info, con, ctrl, rising_threshold;
int ret = 0, threshold_code, i;
+ unsigned long crit_temp = 0;

status = readb(data->base + EXYNOS_TMU_REG_STATUS);
if (!status) {
@@ -373,17 +436,29 @@ static int exynos4412_tmu_initialize(struct platform_device *pdev)
data->tmu_clear_irqs(data);

/* if last threshold limit is also present */
- i = pdata->max_trigger_level - 1;
- if (pdata->trigger_levels[i] && pdata->trigger_type[i] == HW_TRIP) {
- threshold_code = temp_to_code(data, pdata->trigger_levels[i]);
- /* 1-4 level to be assigned in th0 reg */
- rising_threshold &= ~(0xff << 8 * i);
- rising_threshold |= threshold_code << 8 * i;
- writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE);
- con = readl(data->base + EXYNOS_TMU_REG_CONTROL);
- con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT);
- writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
+ for (i = 0; i < of_thermal_get_ntrips(data->tzd); i++) {
+ if (trips[i].type == THERMAL_TRIP_CRITICAL) {
+ crit_temp = trips[i].temperature;
+ break;
+ }
}
+
+ if (i == of_thermal_get_ntrips(data->tzd)) {
+ pr_err("%s: No CRITICAL trip point defined at of-thermal.c!\n",
+ __func__);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ threshold_code = temp_to_code(data, crit_temp / MCELSIUS);
+ /* 1-4 level to be assigned in th0 reg */
+ rising_threshold &= ~(0xff << 8 * i);
+ rising_threshold |= threshold_code << 8 * i;
+ writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE);
+ con = readl(data->base + EXYNOS_TMU_REG_CONTROL);
+ con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT);
+ writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
+
out:
return ret;
}
@@ -391,9 +466,9 @@ out:
static int exynos5440_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct exynos_tmu_platform_data *pdata = data->pdata;
unsigned int trim_info = 0, con, rising_threshold;
- int ret = 0, threshold_code, i;
+ int ret = 0, threshold_code;
+ unsigned long crit_temp = 0;

/*
* For exynos5440 soc triminfo value is swapped between TMU0 and
@@ -422,9 +497,8 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
data->tmu_clear_irqs(data);

/* if last threshold limit is also present */
- i = pdata->max_trigger_level - 1;
- if (pdata->trigger_levels[i] && pdata->trigger_type[i] == HW_TRIP) {
- threshold_code = temp_to_code(data, pdata->trigger_levels[i]);
+ if (!data->tzd->ops->get_crit_temp(data->tzd, &crit_temp)) {
+ threshold_code = temp_to_code(data, crit_temp / MCELSIUS);
/* 5th level to be assigned in th2 reg */
rising_threshold =
threshold_code << EXYNOS5440_TMU_TH_RISE4_SHIFT;
@@ -442,7 +516,7 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
static void exynos4210_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct exynos_tmu_platform_data *pdata = data->pdata;
+ struct thermal_zone_device *tz = data->tzd;
unsigned int con, interrupt_en;

con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
@@ -450,10 +524,15 @@ static void exynos4210_tmu_control(struct platform_device *pdev, bool on)
if (on) {
con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
interrupt_en =
- pdata->trigger_enable[3] << EXYNOS_TMU_INTEN_RISE3_SHIFT |
- pdata->trigger_enable[2] << EXYNOS_TMU_INTEN_RISE2_SHIFT |
- pdata->trigger_enable[1] << EXYNOS_TMU_INTEN_RISE1_SHIFT |
- pdata->trigger_enable[0] << EXYNOS_TMU_INTEN_RISE0_SHIFT;
+ (of_thermal_is_trip_valid(tz, 3)
+ << EXYNOS_TMU_INTEN_RISE3_SHIFT) |
+ (of_thermal_is_trip_valid(tz, 2)
+ << EXYNOS_TMU_INTEN_RISE2_SHIFT) |
+ (of_thermal_is_trip_valid(tz, 1)
+ << EXYNOS_TMU_INTEN_RISE1_SHIFT) |
+ (of_thermal_is_trip_valid(tz, 0)
+ << EXYNOS_TMU_INTEN_RISE0_SHIFT);
+
if (data->soc != SOC_ARCH_EXYNOS4210)
interrupt_en |=
interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
@@ -468,7 +547,7 @@ static void exynos4210_tmu_control(struct platform_device *pdev, bool on)
static void exynos5440_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct exynos_tmu_platform_data *pdata = data->pdata;
+ struct thermal_zone_device *tz = data->tzd;
unsigned int con, interrupt_en;

con = get_con_reg(data, readl(data->base + EXYNOS5440_TMU_S0_7_CTRL));
@@ -476,11 +555,16 @@ static void exynos5440_tmu_control(struct platform_device *pdev, bool on)
if (on) {
con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
interrupt_en =
- pdata->trigger_enable[3] << EXYNOS5440_TMU_INTEN_RISE3_SHIFT |
- pdata->trigger_enable[2] << EXYNOS5440_TMU_INTEN_RISE2_SHIFT |
- pdata->trigger_enable[1] << EXYNOS5440_TMU_INTEN_RISE1_SHIFT |
- pdata->trigger_enable[0] << EXYNOS5440_TMU_INTEN_RISE0_SHIFT;
- interrupt_en |= interrupt_en << EXYNOS5440_TMU_INTEN_FALL0_SHIFT;
+ (of_thermal_is_trip_valid(tz, 3)
+ << EXYNOS5440_TMU_INTEN_RISE3_SHIFT) |
+ (of_thermal_is_trip_valid(tz, 2)
+ << EXYNOS5440_TMU_INTEN_RISE2_SHIFT) |
+ (of_thermal_is_trip_valid(tz, 1)
+ << EXYNOS5440_TMU_INTEN_RISE1_SHIFT) |
+ (of_thermal_is_trip_valid(tz, 0)
+ << EXYNOS5440_TMU_INTEN_RISE0_SHIFT);
+ interrupt_en |=
+ interrupt_en << EXYNOS5440_TMU_INTEN_FALL0_SHIFT;
} else {
con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
interrupt_en = 0; /* Disable all interrupts */
@@ -489,19 +573,22 @@ static void exynos5440_tmu_control(struct platform_device *pdev, bool on)
writel(con, data->base + EXYNOS5440_TMU_S0_7_CTRL);
}

-static int exynos_tmu_read(struct exynos_tmu_data *data)
+int exynos_get_temp(void *p, long *temp)
{
- int ret;
+ struct exynos_tmu_data *data = p;
+
+ if (!data)
+ return -EINVAL;

mutex_lock(&data->lock);
clk_enable(data->clk);
- ret = data->tmu_read(data);
- if (ret >= 0)
- ret = code_to_temp(data, ret);
+
+ *temp = code_to_temp(data, data->tmu_read(data)) * MCELSIUS;
+
clk_disable(data->clk);
mutex_unlock(&data->lock);

- return ret;
+ return 0;
}

#ifdef CONFIG_THERMAL_EMULATION
@@ -613,7 +700,7 @@ static void exynos_tmu_work(struct work_struct *work)
if (!IS_ERR(data->clk_sec))
clk_disable(data->clk_sec);

- exynos_report_trigger(data->reg_conf);
+ exynos_report_trigger(data);
mutex_lock(&data->lock);
clk_enable(data->clk);

@@ -673,55 +760,89 @@ static irqreturn_t exynos_tmu_irq(int irq, void *id)
static const struct of_device_id exynos_tmu_match[] = {
{
.compatible = "samsung,exynos3250-tmu",
- .data = &exynos3250_default_tmu_data,
},
{
.compatible = "samsung,exynos4210-tmu",
- .data = &exynos4210_default_tmu_data,
},
{
.compatible = "samsung,exynos4412-tmu",
- .data = &exynos4412_default_tmu_data,
},
{
.compatible = "samsung,exynos5250-tmu",
- .data = &exynos5250_default_tmu_data,
},
{
.compatible = "samsung,exynos5260-tmu",
- .data = &exynos5260_default_tmu_data,
},
{
.compatible = "samsung,exynos5420-tmu",
- .data = &exynos5420_default_tmu_data,
},
{
.compatible = "samsung,exynos5420-tmu-ext-triminfo",
- .data = &exynos5420_default_tmu_data,
},
{
.compatible = "samsung,exynos5440-tmu",
- .data = &exynos5440_default_tmu_data,
},
{},
};
MODULE_DEVICE_TABLE(of, exynos_tmu_match);

-static inline struct exynos_tmu_platform_data *exynos_get_driver_data(
- struct platform_device *pdev, int id)
+static int exynos_of_get_soc_type(struct device_node *np)
{
- struct exynos_tmu_init_data *data_table;
- struct exynos_tmu_platform_data *tmu_data;
- const struct of_device_id *match;
+ if (of_device_is_compatible(np, "samsung,exynos3250-tmu"))
+ return SOC_ARCH_EXYNOS3250;
+ else if (of_device_is_compatible(np, "samsung,exynos4210-tmu"))
+ return SOC_ARCH_EXYNOS4210;
+ else if (of_device_is_compatible(np, "samsung,exynos4412-tmu"))
+ return SOC_ARCH_EXYNOS4412;
+ else if (of_device_is_compatible(np, "samsung,exynos5250-tmu"))
+ return SOC_ARCH_EXYNOS5250;
+ else if (of_device_is_compatible(np, "samsung,exynos5260-tmu"))
+ return SOC_ARCH_EXYNOS5260;
+ else if (of_device_is_compatible(np, "samsung,exynos5420-tmu"))
+ return SOC_ARCH_EXYNOS5420;
+ else if (of_device_is_compatible(np,
+ "samsung,exynos5420-tmu-ext-triminfo"))
+ return SOC_ARCH_EXYNOS5420_TRIMINFO;
+ else if (of_device_is_compatible(np, "samsung,exynos5440-tmu"))
+ return SOC_ARCH_EXYNOS5440;
+
+ return -EINVAL;
+}

- match = of_match_node(exynos_tmu_match, pdev->dev.of_node);
- if (!match)
- return NULL;
- data_table = (struct exynos_tmu_init_data *) match->data;
- if (!data_table || id >= data_table->tmu_count)
- return NULL;
- tmu_data = data_table->tmu_data;
- return (struct exynos_tmu_platform_data *) (tmu_data + id);
+static int exynos_of_sensor_conf(struct device_node *np,
+ struct exynos_tmu_platform_data *pdata)
+{
+ u32 value;
+ int ret;
+
+ of_node_get(np);
+
+ ret = of_property_read_u32(np, "samsung,tmu_gain", &value);
+ pdata->gain = (u8) value;
+ of_property_read_u32(np, "samsung,tmu_reference_voltage", &value);
+ pdata->reference_voltage = (u8) value;
+ of_property_read_u32(np, "samsung,tmu_noise_cancel_mode", &value);
+ pdata->noise_cancel_mode = (u8) value;
+
+ of_property_read_u32(np, "samsung,tmu_efuse_value",
+ &pdata->efuse_value);
+ of_property_read_u32(np, "samsung,tmu_min_efuse_value",
+ &pdata->min_efuse_value);
+ of_property_read_u32(np, "samsung,tmu_max_efuse_value",
+ &pdata->max_efuse_value);
+
+ of_property_read_u32(np, "samsung,tmu_first_point_trim", &value);
+ pdata->first_point_trim = (u8) value;
+ of_property_read_u32(np, "samsung,tmu_second_point_trim", &value);
+ pdata->second_point_trim = (u8) value;
+ of_property_read_u32(np, "samsung,tmu_default_temp_offset", &value);
+ pdata->default_temp_offset = (u8) value;
+
+ of_property_read_u32(np, "samsung,tmu_cal_type", &pdata->cal_type);
+ of_property_read_u32(np, "samsung,tmu_cal_mode", &pdata->cal_mode);
+
+ of_node_put(np);
+ return 0;
}

static int exynos_map_dt_data(struct platform_device *pdev)
@@ -771,14 +892,15 @@ static int exynos_map_dt_data(struct platform_device *pdev)
return -EADDRNOTAVAIL;
}

- pdata = exynos_get_driver_data(pdev, data->id);
- if (!pdata) {
- dev_err(&pdev->dev, "No platform init data supplied.\n");
- return -ENODEV;
- }
+ pdata = devm_kzalloc(&pdev->dev,
+ sizeof(struct exynos_tmu_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;

+ exynos_of_sensor_conf(pdev->dev.of_node, pdata);
data->pdata = pdata;
- data->soc = pdata->type;
+ data->soc = exynos_of_get_soc_type(pdev->dev.of_node);

switch (data->soc) {
case SOC_ARCH_EXYNOS4210:
@@ -834,12 +956,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
return 0;
}

+static struct thermal_zone_of_device_ops exynos_sensor_ops = {
+ .get_temp = exynos_get_temp,
+ .set_emul_temp = exynos_tmu_set_emulation,
+};
+
static int exynos_tmu_probe(struct platform_device *pdev)
{
- struct exynos_tmu_data *data;
struct exynos_tmu_platform_data *pdata;
- struct thermal_sensor_conf *sensor_conf;
- int ret, i;
+ struct exynos_tmu_data *data;
+ int ret;

data = devm_kzalloc(&pdev->dev, sizeof(struct exynos_tmu_data),
GFP_KERNEL);
@@ -849,9 +975,15 @@ static int exynos_tmu_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
mutex_init(&data->lock);

+ data->tzd = thermal_zone_of_sensor_register(&pdev->dev, 0, data,
+ &exynos_sensor_ops);
+ if (IS_ERR(data->tzd)) {
+ pr_err("thermal: tz: %p ERROR\n", data->tzd);
+ return PTR_ERR(data->tzd);
+ }
ret = exynos_map_dt_data(pdev);
if (ret)
- return ret;
+ goto err_sensor;

pdata = data->pdata;

@@ -860,20 +992,22 @@ static int exynos_tmu_probe(struct platform_device *pdev)
data->clk = devm_clk_get(&pdev->dev, "tmu_apbif");
if (IS_ERR(data->clk)) {
dev_err(&pdev->dev, "Failed to get clock\n");
- return PTR_ERR(data->clk);
+ ret = PTR_ERR(data->clk);
+ goto err_sensor;
}

data->clk_sec = devm_clk_get(&pdev->dev, "tmu_triminfo_apbif");
if (IS_ERR(data->clk_sec)) {
if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO) {
dev_err(&pdev->dev, "Failed to get triminfo clock\n");
- return PTR_ERR(data->clk_sec);
+ ret = PTR_ERR(data->clk_sec);
+ goto err_sensor;
}
} else {
ret = clk_prepare(data->clk_sec);
if (ret) {
dev_err(&pdev->dev, "Failed to get clock\n");
- return ret;
+ goto err_sensor;
}
}

@@ -889,45 +1023,6 @@ static int exynos_tmu_probe(struct platform_device *pdev)
goto err_clk;
}

- exynos_tmu_control(pdev, true);
-
- /* Allocate a structure to register with the exynos core thermal */
- sensor_conf = devm_kzalloc(&pdev->dev,
- sizeof(struct thermal_sensor_conf), GFP_KERNEL);
- if (!sensor_conf) {
- ret = -ENOMEM;
- goto err_clk;
- }
- sprintf(sensor_conf->name, "therm_zone%d", data->id);
- sensor_conf->read_temperature = (int (*)(void *))exynos_tmu_read;
- sensor_conf->write_emul_temp =
- (int (*)(void *, unsigned long))exynos_tmu_set_emulation;
- sensor_conf->driver_data = data;
- sensor_conf->trip_data.trip_count = pdata->trigger_enable[0] +
- pdata->trigger_enable[1] + pdata->trigger_enable[2]+
- pdata->trigger_enable[3];
-
- for (i = 0; i < sensor_conf->trip_data.trip_count; i++) {
- sensor_conf->trip_data.trip_val[i] =
- pdata->threshold + pdata->trigger_levels[i];
- sensor_conf->trip_data.trip_type[i] =
- pdata->trigger_type[i];
- }
-
- sensor_conf->trip_data.trigger_falling = pdata->threshold_falling;
-
- sensor_conf->dev = &pdev->dev;
- /* Register the sensor with thermal management interface */
- ret = exynos_register_thermal(sensor_conf);
- if (ret) {
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev,
- "Failed to register thermal interface: %d\n",
- ret);
- goto err_clk;
- }
- data->reg_conf = sensor_conf;
-
ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
IRQF_TRIGGER_RISING | IRQF_SHARED, dev_name(&pdev->dev), data);
if (ret) {
@@ -935,21 +1030,31 @@ static int exynos_tmu_probe(struct platform_device *pdev)
goto err_clk;
}

+ ret = exynos_tmu_initialize(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to initialize TMU\n");
+ goto err_clk;
+ }
+ exynos_tmu_control(pdev, true);
return 0;
+
err_clk:
clk_unprepare(data->clk);
err_clk_sec:
if (!IS_ERR(data->clk_sec))
clk_unprepare(data->clk_sec);
+err_sensor:
+ thermal_zone_of_sensor_unregister(&pdev->dev, data->tzd);
+
return ret;
}

static int exynos_tmu_remove(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ struct thermal_zone_device *tzd = data->tzd;

- exynos_unregister_thermal(data->reg_conf);
-
+ thermal_zone_of_sensor_unregister(&pdev->dev, tzd);
exynos_tmu_control(pdev, false);

clk_unprepare(data->clk);
diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
index 627dec9..d876d4c 100644
--- a/drivers/thermal/samsung/exynos_tmu.h
+++ b/drivers/thermal/samsung/exynos_tmu.h
@@ -23,8 +23,7 @@
#ifndef _EXYNOS_TMU_H
#define _EXYNOS_TMU_H
#include <linux/cpu_cooling.h>
-
-#include "exynos_thermal_common.h"
+#include <dt-bindings/thermal/thermal_exynos.h>

enum soc_type {
SOC_ARCH_EXYNOS3250 = 1,
@@ -36,38 +35,9 @@ enum soc_type {
SOC_ARCH_EXYNOS5420_TRIMINFO,
SOC_ARCH_EXYNOS5440,
};
-#include <dt-bindings/thermal/thermal_exynos.h>

/**
* struct exynos_tmu_platform_data
- * @threshold: basic temperature for generating interrupt
- * 25 <= threshold <= 125 [unit: degree Celsius]
- * @threshold_falling: differntial value for setting threshold
- * of temperature falling interrupt.
- * @trigger_levels: array for each interrupt levels
- * [unit: degree Celsius]
- * 0: temperature for trigger_level0 interrupt
- * condition for trigger_level0 interrupt:
- * current temperature > threshold + trigger_levels[0]
- * 1: temperature for trigger_level1 interrupt
- * condition for trigger_level1 interrupt:
- * current temperature > threshold + trigger_levels[1]
- * 2: temperature for trigger_level2 interrupt
- * condition for trigger_level2 interrupt:
- * current temperature > threshold + trigger_levels[2]
- * 3: temperature for trigger_level3 interrupt
- * condition for trigger_level3 interrupt:
- * current temperature > threshold + trigger_levels[3]
- * @trigger_type: defines the type of trigger. Possible values are,
- * THROTTLE_ACTIVE trigger type
- * THROTTLE_PASSIVE trigger type
- * SW_TRIP trigger type
- * HW_TRIP
- * @trigger_enable[]: array to denote which trigger levels are enabled.
- * 1 = enable trigger_level[] interrupt,
- * 0 = disable trigger_level[] interrupt
- * @max_trigger_level: max trigger level supported by the TMU
- * @non_hw_trigger_levels: number of defined non-hardware trigger levels
* @gain: gain of amplifier in the positive-TC generator block
* 0 < gain <= 15
* @reference_voltage: reference voltage of amplifier
@@ -79,21 +49,12 @@ enum soc_type {
* @efuse_value: platform defined fuse value
* @min_efuse_value: minimum valid trimming data
* @max_efuse_value: maximum valid trimming data
- * @first_point_trim: temp value of the first point trimming
- * @second_point_trim: temp value of the second point trimming
* @default_temp_offset: default temperature offset in case of no trimming
* @cal_type: calibration type for temperature
*
* This structure is required for configuration of exynos_tmu driver.
*/
struct exynos_tmu_platform_data {
- u8 threshold;
- u8 threshold_falling;
- u8 trigger_levels[MAX_TRIP_COUNT];
- enum trigger_type trigger_type[MAX_TRIP_COUNT];
- bool trigger_enable[MAX_TRIP_COUNT];
- u8 max_trigger_level;
- u8 non_hw_trigger_levels;
u8 gain;
u8 reference_voltage;
u8 noise_cancel_mode;
@@ -110,18 +71,6 @@ struct exynos_tmu_platform_data {
u32 cal_mode;
};

-/**
- * struct exynos_tmu_init_data
- * @tmu_count: number of TMU instances.
- * @tmu_data: platform data of all TMU instances.
- * This structure is required to store data for multi-instance exynos tmu
- * driver.
- */
-struct exynos_tmu_init_data {
- int tmu_count;
- struct exynos_tmu_platform_data tmu_data[];
-};
-
extern struct exynos_tmu_init_data const exynos3250_default_tmu_data;
extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
extern struct exynos_tmu_init_data const exynos4412_default_tmu_data;
--
2.0.0.rc2