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thermal: samsung: core: Exynos TMU rework to use device tree for configuration 

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>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Lukasz Majewski 2015-01-23 13:10:08 +01:00 committed by Eduardo Valentin
parent d29f0a1095
commit 3b6a1a805f
3 changed files with 220 additions and 182 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/thermal/samsung/Makefile
View File

@ -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

339
drivers/thermal/samsung/exynos_tmu.c
View File

@ -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)
static 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;
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);
return -EINVAL;
}
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 +1030,25 @@ static int exynos_tmu_probe(struct platform_device *pdev)
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);

61
drivers/thermal/samsung/exynos_tmu.h
View File

@ -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;
@ -110,24 +71,4 @@ 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;
extern struct exynos_tmu_init_data const exynos5250_default_tmu_data;
extern struct exynos_tmu_init_data const exynos5260_default_tmu_data;
extern struct exynos_tmu_init_data const exynos5420_default_tmu_data;
extern struct exynos_tmu_init_data const exynos5440_default_tmu_data;
#endif /* _EXYNOS_TMU_H */