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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2024-01-02 13:45:36 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2024-01-02 13:45:36 +0100
commitd654362d53a83ef3b921f3d06812e12290646a90 (patch)
treeafc2e5caa53ea6f5b74526acc86ccb59572e9625 /drivers/thermal
parenta3cd6db4cc2ed70fc3468cdb5eb20745e7fefba9 (diff)
parent5314b1543787e6cd5d248186fcfd5c5fc4ca2146 (diff)
Merge tag 'thermal-v6.8-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux into thermal
Merge thermal control material for 6.8-rc1 from Daniel Lezcano: "- Converted Mediatek Thermal to the json-schema (Rafał Miłecki) - Fixed DT bindings issue on Loongson (Binbin Zhou) - Fixed returning NULL instead of -ENODEV on Loogsoo (Binbin Zhou) - Added the DT binding for the tsens on SM8650 platform (Neil Armstrong) - Added a reboot on critical option feature (Fabio Estevam) - Made usage of DEFINE_SIMPLE_DEV_PM_OPS on AmLogic (Uwe Kleine-König) - Added the D1/T113s THS controller support on Sun8i (Maxim Kiselev) - Fixed example in the DT binding for QCom SPMI (Johan Hovold) - Fixed compilation warning for the tmon utility (Florian Eckert) - Added interrupt based configuration on Exynos along with a set of related cleanups (Mateusz Majewski)" * tag 'thermal-v6.8-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (24 commits) thermal/drivers/exynos: Use set_trips ops thermal/drivers/exynos: Use BIT wherever possible thermal/drivers/exynos: Split initialization of TMU and the thermal zone thermal/drivers/exynos: Stop using the threshold mechanism on Exynos 4210 thermal/drivers/exynos: Simplify regulator (de)initialization thermal/drivers/exynos: Handle devm_regulator_get_optional return value correctly thermal/drivers/exynos: Wwitch from workqueue-driven interrupt handling to threaded interrupts thermal/drivers/exynos: Drop id field thermal/drivers/exynos: Remove an unnecessary field description tools/thermal/tmon: Fix compilation warning for wrong format dt-bindings: thermal: qcom-spmi-adc-tm5/hc: Clean up examples dt-bindings: thermal: qcom-spmi-adc-tm5/hc: Fix example node names thermal/drivers/sun8i: Add D1/T113s THS controller support dt-bindings: thermal: sun8i: Add binding for D1/T113s THS controller thermal: amlogic: Use DEFINE_SIMPLE_DEV_PM_OPS for PM functions thermal: amlogic: Make amlogic_thermal_disable() return void thermal/thermal_of: Allow rebooting after critical temp reboot: Introduce thermal_zone_device_critical_reboot() thermal/core: Prepare for introduction of thermal reboot dt-bindings: thermal-zones: Document critical-action ...
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/amlogic_thermal.c19
-rw-r--r--drivers/thermal/loongson2_thermal.c2
-rw-r--r--drivers/thermal/samsung/exynos_tmu.c529
-rw-r--r--drivers/thermal/sun8i_thermal.c13
-rw-r--r--drivers/thermal/thermal_core.c21
-rw-r--r--drivers/thermal/thermal_core.h1
-rw-r--r--drivers/thermal/thermal_of.c6
7 files changed, 313 insertions, 278 deletions
diff --git a/drivers/thermal/amlogic_thermal.c b/drivers/thermal/amlogic_thermal.c
index 5877cde25b79..df7a5ed55385 100644
--- a/drivers/thermal/amlogic_thermal.c
+++ b/drivers/thermal/amlogic_thermal.c
@@ -167,13 +167,11 @@ static int amlogic_thermal_enable(struct amlogic_thermal *data)
return 0;
}
-static int amlogic_thermal_disable(struct amlogic_thermal *data)
+static void amlogic_thermal_disable(struct amlogic_thermal *data)
{
regmap_update_bits(data->regmap, TSENSOR_CFG_REG1,
TSENSOR_CFG_REG1_ENABLE, 0);
clk_disable_unprepare(data->clk);
-
- return 0;
}
static int amlogic_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
@@ -298,27 +296,30 @@ static void amlogic_thermal_remove(struct platform_device *pdev)
amlogic_thermal_disable(data);
}
-static int __maybe_unused amlogic_thermal_suspend(struct device *dev)
+static int amlogic_thermal_suspend(struct device *dev)
{
struct amlogic_thermal *data = dev_get_drvdata(dev);
- return amlogic_thermal_disable(data);
+ amlogic_thermal_disable(data);
+
+ return 0;
}
-static int __maybe_unused amlogic_thermal_resume(struct device *dev)
+static int amlogic_thermal_resume(struct device *dev)
{
struct amlogic_thermal *data = dev_get_drvdata(dev);
return amlogic_thermal_enable(data);
}
-static SIMPLE_DEV_PM_OPS(amlogic_thermal_pm_ops,
- amlogic_thermal_suspend, amlogic_thermal_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(amlogic_thermal_pm_ops,
+ amlogic_thermal_suspend,
+ amlogic_thermal_resume);
static struct platform_driver amlogic_thermal_driver = {
.driver = {
.name = "amlogic_thermal",
- .pm = &amlogic_thermal_pm_ops,
+ .pm = pm_ptr(&amlogic_thermal_pm_ops),
.of_match_table = of_amlogic_thermal_match,
},
.probe = amlogic_thermal_probe,
diff --git a/drivers/thermal/loongson2_thermal.c b/drivers/thermal/loongson2_thermal.c
index 133098dc0854..99ca0c7bc41c 100644
--- a/drivers/thermal/loongson2_thermal.c
+++ b/drivers/thermal/loongson2_thermal.c
@@ -127,7 +127,7 @@ static int loongson2_thermal_probe(struct platform_device *pdev)
if (!IS_ERR(tzd))
break;
- if (PTR_ERR(tzd) != ENODEV)
+ if (PTR_ERR(tzd) != -ENODEV)
continue;
return dev_err_probe(dev, PTR_ERR(tzd), "failed to register");
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 123ec81e1943..6482513bfe66 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -138,12 +138,10 @@ enum soc_type {
/**
* struct exynos_tmu_data : A structure to hold the private data of the TMU
* driver
- * @id: identifier of the one instance of the TMU controller.
* @base: base address of the single instance of the TMU controller.
* @base_second: base address of the common registers of the TMU controller.
* @irq: irq number of the TMU controller.
* @soc: id of the SOC type.
- * @irq_work: pointer to the irq work structure.
* @lock: lock to implement synchronization.
* @clk: pointer to the clock structure.
* @clk_sec: pointer to the clock structure for accessing the base_second.
@@ -159,13 +157,13 @@ enum soc_type {
* @reference_voltage: reference voltage of amplifier
* in the positive-TC generator block
* 0 < reference_voltage <= 31
- * @regulator: pointer to the TMU regulator structure.
- * @reg_conf: pointer to structure to register with core thermal.
* @tzd: pointer to thermal_zone_device structure
- * @ntrip: number of supported trip points.
* @enabled: current status of TMU device
- * @tmu_set_trip_temp: SoC specific method to set trip (rising threshold)
- * @tmu_set_trip_hyst: SoC specific to set hysteresis (falling threshold)
+ * @tmu_set_low_temp: SoC specific method to set trip (falling threshold)
+ * @tmu_set_high_temp: SoC specific method to set trip (rising threshold)
+ * @tmu_set_crit_temp: SoC specific method to set critical temperature
+ * @tmu_disable_low: SoC specific method to disable an interrupt (falling threshold)
+ * @tmu_disable_high: SoC specific method to disable an interrupt (rising threshold)
* @tmu_initialize: SoC specific TMU initialization method
* @tmu_control: SoC specific TMU control method
* @tmu_read: SoC specific TMU temperature read method
@@ -173,12 +171,10 @@ enum soc_type {
* @tmu_clear_irqs: SoC specific TMU interrupts clearing method
*/
struct exynos_tmu_data {
- int id;
void __iomem *base;
void __iomem *base_second;
int irq;
enum soc_type soc;
- struct work_struct irq_work;
struct mutex lock;
struct clk *clk, *clk_sec, *sclk;
u32 cal_type;
@@ -188,15 +184,14 @@ struct exynos_tmu_data {
u16 temp_error1, temp_error2;
u8 gain;
u8 reference_voltage;
- struct regulator *regulator;
struct thermal_zone_device *tzd;
- unsigned int ntrip;
bool enabled;
- void (*tmu_set_trip_temp)(struct exynos_tmu_data *data, int trip,
- u8 temp);
- void (*tmu_set_trip_hyst)(struct exynos_tmu_data *data, int trip,
- u8 temp, u8 hyst);
+ void (*tmu_set_low_temp)(struct exynos_tmu_data *data, u8 temp);
+ void (*tmu_set_high_temp)(struct exynos_tmu_data *data, u8 temp);
+ void (*tmu_set_crit_temp)(struct exynos_tmu_data *data, u8 temp);
+ void (*tmu_disable_low)(struct exynos_tmu_data *data);
+ void (*tmu_disable_high)(struct exynos_tmu_data *data);
void (*tmu_initialize)(struct platform_device *pdev);
void (*tmu_control)(struct platform_device *pdev, bool on);
int (*tmu_read)(struct exynos_tmu_data *data);
@@ -258,25 +253,8 @@ static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info)
static int exynos_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct thermal_zone_device *tzd = data->tzd;
- int num_trips = thermal_zone_get_num_trips(tzd);
unsigned int status;
- int ret = 0, temp;
-
- ret = thermal_zone_get_crit_temp(tzd, &temp);
- if (ret && data->soc != SOC_ARCH_EXYNOS5433) { /* FIXME */
- dev_err(&pdev->dev,
- "No CRITICAL trip point defined in device tree!\n");
- goto out;
- }
-
- if (num_trips > data->ntrip) {
- dev_info(&pdev->dev,
- "More trip points than supported by this TMU.\n");
- dev_info(&pdev->dev,
- "%d trip points should be configured in polling mode.\n",
- num_trips - data->ntrip);
- }
+ int ret = 0;
mutex_lock(&data->lock);
clk_enable(data->clk);
@@ -287,34 +265,44 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
if (!status) {
ret = -EBUSY;
} else {
- int i, ntrips =
- min_t(int, num_trips, data->ntrip);
-
data->tmu_initialize(pdev);
+ data->tmu_clear_irqs(data);
+ }
- /* Write temperature code for rising and falling threshold */
- for (i = 0; i < ntrips; i++) {
+ if (!IS_ERR(data->clk_sec))
+ clk_disable(data->clk_sec);
+ clk_disable(data->clk);
+ mutex_unlock(&data->lock);
- struct thermal_trip trip;
+ return ret;
+}
- ret = thermal_zone_get_trip(tzd, i, &trip);
- if (ret)
- goto err;
+static int exynos_thermal_zone_configure(struct platform_device *pdev)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ struct thermal_zone_device *tzd = data->tzd;
+ int ret, temp;
- data->tmu_set_trip_temp(data, i, trip.temperature / MCELSIUS);
- data->tmu_set_trip_hyst(data, i, trip.temperature / MCELSIUS,
- trip.hysteresis / MCELSIUS);
- }
+ ret = thermal_zone_get_crit_temp(tzd, &temp);
+ if (ret) {
+ /* FIXME: Remove this special case */
+ if (data->soc == SOC_ARCH_EXYNOS5433)
+ return 0;
- data->tmu_clear_irqs(data);
+ dev_err(&pdev->dev,
+ "No CRITICAL trip point defined in device tree!\n");
+ return ret;
}
-err:
+
+ mutex_lock(&data->lock);
+ clk_enable(data->clk);
+
+ data->tmu_set_crit_temp(data, temp / MCELSIUS);
+
clk_disable(data->clk);
mutex_unlock(&data->lock);
- if (!IS_ERR(data->clk_sec))
- clk_disable(data->clk_sec);
-out:
- return ret;
+
+ return 0;
}
static u32 get_con_reg(struct exynos_tmu_data *data, u32 con)
@@ -347,30 +335,74 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on)
mutex_unlock(&data->lock);
}
-static void exynos4210_tmu_set_trip_temp(struct exynos_tmu_data *data,
- int trip_id, u8 temp)
+static void exynos_tmu_update_bit(struct exynos_tmu_data *data, int reg_off,
+ int bit_off, bool enable)
+{
+ u32 interrupt_en;
+
+ interrupt_en = readl(data->base + reg_off);
+ if (enable)
+ interrupt_en |= BIT(bit_off);
+ else
+ interrupt_en &= ~BIT(bit_off);
+ writel(interrupt_en, data->base + reg_off);
+}
+
+static void exynos_tmu_update_temp(struct exynos_tmu_data *data, int reg_off,
+ int bit_off, u8 temp)
{
- struct thermal_trip trip;
- u8 ref, th_code;
+ u16 tmu_temp_mask;
+ u32 th;
- if (thermal_zone_get_trip(data->tzd, 0, &trip))
- return;
+ tmu_temp_mask =
+ (data->soc == SOC_ARCH_EXYNOS7) ? EXYNOS7_TMU_TEMP_MASK
+ : EXYNOS_TMU_TEMP_MASK;
- ref = trip.temperature / MCELSIUS;
+ th = readl(data->base + reg_off);
+ th &= ~(tmu_temp_mask << bit_off);
+ th |= temp_to_code(data, temp) << bit_off;
+ writel(th, data->base + reg_off);
+}
- if (trip_id == 0) {
- th_code = temp_to_code(data, ref);
- writeb(th_code, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
- }
+static void exynos4210_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ /*
+ * Failing thresholds are not supported on Exynos 4210.
+ * We use polling instead.
+ */
+}
+
+static void exynos4210_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ temp = temp_to_code(data, temp);
+ writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + 4);
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_RISE0_SHIFT + 4, true);
+}
- temp -= ref;
- writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + trip_id * 4);
+static void exynos4210_tmu_disable_low(struct exynos_tmu_data *data)
+{
+ /* Again, this is handled by polling. */
}
-/* failing thresholds are not supported on Exynos4210 */
-static void exynos4210_tmu_set_trip_hyst(struct exynos_tmu_data *data,
- int trip, u8 temp, u8 hyst)
+static void exynos4210_tmu_disable_high(struct exynos_tmu_data *data)
{
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_RISE0_SHIFT + 4, false);
+}
+
+static void exynos4210_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ /*
+ * Hardware critical temperature handling is not supported on Exynos 4210.
+ * We still set the critical temperature threshold, but this is only to
+ * make sure it is handled as soon as possible. It is just a normal interrupt.
+ */
+
+ temp = temp_to_code(data, temp);
+ writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + 12);
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_RISE0_SHIFT + 12, true);
}
static void exynos4210_tmu_initialize(struct platform_device *pdev)
@@ -378,35 +410,35 @@ static void exynos4210_tmu_initialize(struct platform_device *pdev)
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
sanitize_temp_error(data, readl(data->base + EXYNOS_TMU_REG_TRIMINFO));
+
+ writeb(0, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
}
-static void exynos4412_tmu_set_trip_temp(struct exynos_tmu_data *data,
- int trip, u8 temp)
+static void exynos4412_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
{
- u32 th, con;
-
- th = readl(data->base + EXYNOS_THD_TEMP_RISE);
- th &= ~(0xff << 8 * trip);
- th |= temp_to_code(data, temp) << 8 * trip;
- writel(th, data->base + EXYNOS_THD_TEMP_RISE);
+ exynos_tmu_update_temp(data, EXYNOS_THD_TEMP_FALL, 0, temp);
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_FALL0_SHIFT, true);
+}
- if (trip == 3) {
- con = readl(data->base + EXYNOS_TMU_REG_CONTROL);
- con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT);
- writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
- }
+static void exynos4412_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ exynos_tmu_update_temp(data, EXYNOS_THD_TEMP_RISE, 8, temp);
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_RISE0_SHIFT + 4, true);
}
-static void exynos4412_tmu_set_trip_hyst(struct exynos_tmu_data *data,
- int trip, u8 temp, u8 hyst)
+static void exynos4412_tmu_disable_low(struct exynos_tmu_data *data)
{
- u32 th;
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_FALL0_SHIFT, false);
+}
- th = readl(data->base + EXYNOS_THD_TEMP_FALL);
- th &= ~(0xff << 8 * trip);
- if (hyst)
- th |= temp_to_code(data, temp - hyst) << 8 * trip;
- writel(th, data->base + EXYNOS_THD_TEMP_FALL);
+static void exynos4412_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ exynos_tmu_update_temp(data, EXYNOS_THD_TEMP_RISE, 24, temp);
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_CONTROL,
+ EXYNOS_TMU_THERM_TRIP_EN_SHIFT, true);
}
static void exynos4412_tmu_initialize(struct platform_device *pdev)
@@ -436,44 +468,39 @@ static void exynos4412_tmu_initialize(struct platform_device *pdev)
sanitize_temp_error(data, trim_info);
}
-static void exynos5433_tmu_set_trip_temp(struct exynos_tmu_data *data,
- int trip, u8 temp)
+static void exynos5433_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
{
- unsigned int reg_off, j;
- u32 th;
-
- if (trip > 3) {
- reg_off = EXYNOS5433_THD_TEMP_RISE7_4;
- j = trip - 4;
- } else {
- reg_off = EXYNOS5433_THD_TEMP_RISE3_0;
- j = trip;
- }
+ exynos_tmu_update_temp(data, EXYNOS5433_THD_TEMP_FALL3_0, 0, temp);
+ exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_FALL0_SHIFT, true);
+}
- th = readl(data->base + reg_off);
- th &= ~(0xff << j * 8);
- th |= (temp_to_code(data, temp) << j * 8);
- writel(th, data->base + reg_off);
+static void exynos5433_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ exynos_tmu_update_temp(data, EXYNOS5433_THD_TEMP_RISE3_0, 8, temp);
+ exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+ EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, true);
}
-static void exynos5433_tmu_set_trip_hyst(struct exynos_tmu_data *data,
- int trip, u8 temp, u8 hyst)
+static void exynos5433_tmu_disable_low(struct exynos_tmu_data *data)
{
- unsigned int reg_off, j;
- u32 th;
+ exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_FALL0_SHIFT, false);
+}
- if (trip > 3) {
- reg_off = EXYNOS5433_THD_TEMP_FALL7_4;
- j = trip - 4;
- } else {
- reg_off = EXYNOS5433_THD_TEMP_FALL3_0;
- j = trip;
- }
+static void exynos5433_tmu_disable_high(struct exynos_tmu_data *data)
+{
+ exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+ EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, false);
+}
- th = readl(data->base + reg_off);
- th &= ~(0xff << j * 8);
- th |= (temp_to_code(data, temp - hyst) << j * 8);
- writel(th, data->base + reg_off);
+static void exynos5433_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ exynos_tmu_update_temp(data, EXYNOS5433_THD_TEMP_RISE7_4, 24, temp);
+ exynos_tmu_update_bit(data, EXYNOS_TMU_REG_CONTROL,
+ EXYNOS_TMU_THERM_TRIP_EN_SHIFT, true);
+ exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+ EXYNOS7_TMU_INTEN_RISE0_SHIFT + 7, true);
}
static void exynos5433_tmu_initialize(struct platform_device *pdev)
@@ -509,34 +536,41 @@ static void exynos5433_tmu_initialize(struct platform_device *pdev)
cal_type ? 2 : 1);
}
-static void exynos7_tmu_set_trip_temp(struct exynos_tmu_data *data,
- int trip, u8 temp)
+static void exynos7_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
{
- unsigned int reg_off, bit_off;
- u32 th;
-
- reg_off = ((7 - trip) / 2) * 4;
- bit_off = ((8 - trip) % 2);
+ exynos_tmu_update_temp(data, EXYNOS7_THD_TEMP_FALL7_6 + 12, 0, temp);
+ exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_FALL0_SHIFT + 0, true);
+}
- th = readl(data->base + EXYNOS7_THD_TEMP_RISE7_6 + reg_off);
- th &= ~(EXYNOS7_TMU_TEMP_MASK << (16 * bit_off));
- th |= temp_to_code(data, temp) << (16 * bit_off);
- writel(th, data->base + EXYNOS7_THD_TEMP_RISE7_6 + reg_off);
+static void exynos7_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ exynos_tmu_update_temp(data, EXYNOS7_THD_TEMP_RISE7_6 + 12, 16, temp);
+ exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+ EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, true);
}
-static void exynos7_tmu_set_trip_hyst(struct exynos_tmu_data *data,
- int trip, u8 temp, u8 hyst)
+static void exynos7_tmu_disable_low(struct exynos_tmu_data *data)
{
- unsigned int reg_off, bit_off;
- u32 th;
+ exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+ EXYNOS_TMU_INTEN_FALL0_SHIFT + 0, false);
+}
- reg_off = ((7 - trip) / 2) * 4;
- bit_off = ((8 - trip) % 2);
+static void exynos7_tmu_disable_high(struct exynos_tmu_data *data)
+{
+ exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+ EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, false);
+}
- th = readl(data->base + EXYNOS7_THD_TEMP_FALL7_6 + reg_off);
- th &= ~(EXYNOS7_TMU_TEMP_MASK << (16 * bit_off));
- th |= temp_to_code(data, temp - hyst) << (16 * bit_off);
- writel(th, data->base + EXYNOS7_THD_TEMP_FALL7_6 + reg_off);
+static void exynos7_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+ /*
+ * Like Exynos 4210, Exynos 7 does not seem to support critical temperature
+ * handling in hardware. Again, we still set a separate interrupt for it.
+ */
+ exynos_tmu_update_temp(data, EXYNOS7_THD_TEMP_RISE7_6 + 0, 16, temp);
+ exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+ EXYNOS7_TMU_INTEN_RISE0_SHIFT + 7, true);
}
static void exynos7_tmu_initialize(struct platform_device *pdev)
@@ -551,95 +585,51 @@ static void exynos7_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 thermal_zone_device *tz = data->tzd;
- struct thermal_trip trip;
- unsigned int con, interrupt_en = 0, i;
+ unsigned int con;
con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
- if (on) {
- for (i = 0; i < data->ntrip; i++) {
- if (thermal_zone_get_trip(tz, i, &trip))
- continue;
-
- interrupt_en |=
- (1 << (EXYNOS_TMU_INTEN_RISE0_SHIFT + i * 4));
- }
-
- if (data->soc != SOC_ARCH_EXYNOS4210)
- interrupt_en |=
- interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
-
- con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
- } else {
- con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
- }
+ if (on)
+ con |= BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+ else
+ con &= ~BIT(EXYNOS_TMU_CORE_EN_SHIFT);
- writel(interrupt_en, data->base + EXYNOS_TMU_REG_INTEN);
writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
}
static void exynos5433_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct thermal_zone_device *tz = data->tzd;
- struct thermal_trip trip;
- unsigned int con, interrupt_en = 0, pd_det_en, i;
+ unsigned int con, pd_det_en;
con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
- if (on) {
- for (i = 0; i < data->ntrip; i++) {
- if (thermal_zone_get_trip(tz, i, &trip))
- continue;
-
- interrupt_en |=
- (1 << (EXYNOS7_TMU_INTEN_RISE0_SHIFT + i));
- }
-
- interrupt_en |=
- interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
-
- con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
- } else
- con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
+ if (on)
+ con |= BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+ else
+ con &= ~BIT(EXYNOS_TMU_CORE_EN_SHIFT);
pd_det_en = on ? EXYNOS5433_PD_DET_EN : 0;
writel(pd_det_en, data->base + EXYNOS5433_TMU_PD_DET_EN);
- writel(interrupt_en, data->base + EXYNOS5433_TMU_REG_INTEN);
writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
}
static void exynos7_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
- struct thermal_zone_device *tz = data->tzd;
- struct thermal_trip trip;
- unsigned int con, interrupt_en = 0, i;
+ unsigned int con;
con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
if (on) {
- for (i = 0; i < data->ntrip; i++) {
- if (thermal_zone_get_trip(tz, i, &trip))
- continue;
-
- interrupt_en |=
- (1 << (EXYNOS7_TMU_INTEN_RISE0_SHIFT + i));
- }
-
- interrupt_en |=
- interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
-
- con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
- con |= (1 << EXYNOS7_PD_DET_EN_SHIFT);
+ con |= BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+ con |= BIT(EXYNOS7_PD_DET_EN_SHIFT);
} else {
- con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
- con &= ~(1 << EXYNOS7_PD_DET_EN_SHIFT);
+ con &= ~BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+ con &= ~BIT(EXYNOS7_PD_DET_EN_SHIFT);
}
- writel(interrupt_en, data->base + EXYNOS7_TMU_REG_INTEN);
writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
}
@@ -766,10 +756,9 @@ static int exynos7_tmu_read(struct exynos_tmu_data *data)
EXYNOS7_TMU_TEMP_MASK;
}
-static void exynos_tmu_work(struct work_struct *work)
+static irqreturn_t exynos_tmu_threaded_irq(int irq, void *id)
{
- struct exynos_tmu_data *data = container_of(work,
- struct exynos_tmu_data, irq_work);
+ struct exynos_tmu_data *data = id;
thermal_zone_device_update(data->tzd, THERMAL_EVENT_UNSPECIFIED);
@@ -781,7 +770,8 @@ static void exynos_tmu_work(struct work_struct *work)
clk_disable(data->clk);
mutex_unlock(&data->lock);
- enable_irq(data->irq);
+
+ return IRQ_HANDLED;
}
static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data)
@@ -815,16 +805,6 @@ static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data)
writel(val_irq, data->base + tmu_intclear);
}
-static irqreturn_t exynos_tmu_irq(int irq, void *id)
-{
- struct exynos_tmu_data *data = id;
-
- disable_irq_nosync(irq);
- schedule_work(&data->irq_work);
-
- return IRQ_HANDLED;
-}
-
static const struct of_device_id exynos_tmu_match[] = {
{
.compatible = "samsung,exynos3250-tmu",
@@ -866,10 +846,6 @@ static int exynos_map_dt_data(struct platform_device *pdev)
if (!data || !pdev->dev.of_node)
return -ENODEV;
- data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
- if (data->id < 0)
- data->id = 0;
-
data->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
if (data->irq <= 0) {
dev_err(&pdev->dev, "failed to get IRQ\n");
@@ -891,13 +867,15 @@ static int exynos_map_dt_data(struct platform_device *pdev)
switch (data->soc) {
case SOC_ARCH_EXYNOS4210:
- data->tmu_set_trip_temp = exynos4210_tmu_set_trip_temp;
- data->tmu_set_trip_hyst = exynos4210_tmu_set_trip_hyst;
+ data->tmu_set_low_temp = exynos4210_tmu_set_low_temp;
+ data->tmu_set_high_temp = exynos4210_tmu_set_high_temp;
+ data->tmu_disable_low = exynos4210_tmu_disable_low;
+ data->tmu_disable_high = exynos4210_tmu_disable_high;
+ data->tmu_set_crit_temp = exynos4210_tmu_set_crit_temp;
data->tmu_initialize = exynos4210_tmu_initialize;
data->tmu_control = exynos4210_tmu_control;
data->tmu_read = exynos4210_tmu_read;
data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
- data->ntrip = 4;
data->gain = 15;
data->reference_voltage = 7;
data->efuse_value = 55;
@@ -910,14 +888,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
case SOC_ARCH_EXYNOS5260:
case SOC_ARCH_EXYNOS5420:
case SOC_ARCH_EXYNOS5420_TRIMINFO:
- data->tmu_set_trip_temp = exynos4412_tmu_set_trip_temp;
- data->tmu_set_trip_hyst = exynos4412_tmu_set_trip_hyst;
+ data->tmu_set_low_temp = exynos4412_tmu_set_low_temp;
+ data->tmu_set_high_temp = exynos4412_tmu_set_high_temp;
+ data->tmu_disable_low = exynos4412_tmu_disable_low;
+ data->tmu_disable_high = exynos4210_tmu_disable_high;
+ data->tmu_set_crit_temp = exynos4412_tmu_set_crit_temp;
data->tmu_initialize = exynos4412_tmu_initialize;
data->tmu_control = exynos4210_tmu_control;
data->tmu_read = exynos4412_tmu_read;
data->tmu_set_emulation = exynos4412_tmu_set_emulation;
data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
- data->ntrip = 4;
data->gain = 8;
data->reference_voltage = 16;
data->efuse_value = 55;
@@ -929,14 +909,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
data->max_efuse_value = 100;
break;
case SOC_ARCH_EXYNOS5433:
- data->tmu_set_trip_temp = exynos5433_tmu_set_trip_temp;
- data->tmu_set_trip_hyst = exynos5433_tmu_set_trip_hyst;
+ data->tmu_set_low_temp = exynos5433_tmu_set_low_temp;
+ data->tmu_set_high_temp = exynos5433_tmu_set_high_temp;
+ data->tmu_disable_low = exynos5433_tmu_disable_low;
+ data->tmu_disable_high = exynos5433_tmu_disable_high;
+ data->tmu_set_crit_temp = exynos5433_tmu_set_crit_temp;
data->tmu_initialize = exynos5433_tmu_initialize;
data->tmu_control = exynos5433_tmu_control;
data->tmu_read = exynos4412_tmu_read;
data->tmu_set_emulation = exynos4412_tmu_set_emulation;
data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
- data->ntrip = 8;
data->gain = 8;
if (res.start == EXYNOS5433_G3D_BASE)
data->reference_voltage = 23;
@@ -947,14 +929,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
data->max_efuse_value = 150;
break;
case SOC_ARCH_EXYNOS7:
- data->tmu_set_trip_temp = exynos7_tmu_set_trip_temp;
- data->tmu_set_trip_hyst = exynos7_tmu_set_trip_hyst;
+ data->tmu_set_low_temp = exynos7_tmu_set_low_temp;
+ data->tmu_set_high_temp = exynos7_tmu_set_high_temp;
+ data->tmu_disable_low = exynos7_tmu_disable_low;
+ data->tmu_disable_high = exynos7_tmu_disable_high;
+ data->tmu_set_crit_temp = exynos7_tmu_set_crit_temp;
data->tmu_initialize = exynos7_tmu_initialize;
data->tmu_control = exynos7_tmu_control;
data->tmu_read = exynos7_tmu_read;
data->tmu_set_emulation = exynos4412_tmu_set_emulation;
data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
- data->ntrip = 8;
data->gain = 9;
data->reference_voltage = 17;
data->efuse_value = 75;
@@ -990,9 +974,32 @@ static int exynos_map_dt_data(struct platform_device *pdev)
return 0;
}
+static int exynos_set_trips(struct thermal_zone_device *tz, int low, int high)
+{
+ struct exynos_tmu_data *data = thermal_zone_device_priv(tz);
+
+ mutex_lock(&data->lock);
+ clk_enable(data->clk);
+
+ if (low > INT_MIN)
+ data->tmu_set_low_temp(data, low / MCELSIUS);
+ else
+ data->tmu_disable_low(data);
+ if (high < INT_MAX)
+ data->tmu_set_high_temp(data, high / MCELSIUS);
+ else
+ data->tmu_disable_high(data);
+
+ clk_disable(data->clk);
+ mutex_unlock(&data->lock);
+
+ return 0;
+}
+
static const struct thermal_zone_device_ops exynos_sensor_ops = {
.get_temp = exynos_get_temp,
.set_emul_temp = exynos_tmu_set_emulation,
+ .set_trips = exynos_set_trips,
};
static int exynos_tmu_probe(struct platform_device *pdev)
@@ -1013,44 +1020,40 @@ static int exynos_tmu_probe(struct platform_device *pdev)
* TODO: Add regulator as an SOC feature, so that regulator enable
* is a compulsory call.
*/
- data->regulator = devm_regulator_get_optional(&pdev->dev, "vtmu");
- if (!IS_ERR(data->regulator)) {
- ret = regulator_enable(data->regulator);
- if (ret) {
- dev_err(&pdev->dev, "failed to enable vtmu\n");
- return ret;
- }
- } else {
- if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
- dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
+ ret = devm_regulator_get_enable_optional(&pdev->dev, "vtmu");
+ switch (ret) {
+ case 0:
+ case -ENODEV:
+ break;
+ case -EPROBE_DEFER:
+ return -EPROBE_DEFER;
+ default:
+ dev_err(&pdev->dev, "Failed to get enabled regulator: %d\n",
+ ret);
+ return ret;
}
ret = exynos_map_dt_data(pdev);
if (ret)
- goto err_sensor;
-
- INIT_WORK(&data->irq_work, exynos_tmu_work);
+ return ret;
data->clk = devm_clk_get(&pdev->dev, "tmu_apbif");
if (IS_ERR(data->clk)) {
dev_err(&pdev->dev, "Failed to get clock\n");
- ret = PTR_ERR(data->clk);
- goto err_sensor;
+ return PTR_ERR(data->clk);
}
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");
- ret = PTR_ERR(data->clk_sec);
- goto err_sensor;
+ return PTR_ERR(data->clk_sec);
}
} else {
ret = clk_prepare(data->clk_sec);
if (ret) {
dev_err(&pdev->dev, "Failed to get clock\n");
- goto err_sensor;
+ return ret;
}
}
@@ -1080,10 +1083,12 @@ static int exynos_tmu_probe(struct platform_device *pdev)
break;
}
- /*
- * data->tzd must be registered before calling exynos_tmu_initialize(),
- * requesting irq and calling exynos_tmu_control().
- */
+ ret = exynos_tmu_initialize(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to initialize TMU\n");
+ goto err_sclk;
+ }
+
data->tzd = devm_thermal_of_zone_register(&pdev->dev, 0, data,
&exynos_sensor_ops);
if (IS_ERR(data->tzd)) {
@@ -1094,14 +1099,17 @@ static int exynos_tmu_probe(struct platform_device *pdev)
goto err_sclk;
}
- ret = exynos_tmu_initialize(pdev);
+ ret = exynos_thermal_zone_configure(pdev);
if (ret) {
- dev_err(&pdev->dev, "Failed to initialize TMU\n");
+ dev_err(&pdev->dev, "Failed to configure the thermal zone\n");
goto err_sclk;
}
- ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
- IRQF_TRIGGER_RISING | IRQF_SHARED, dev_name(&pdev->dev), data);
+ ret = devm_request_threaded_irq(&pdev->dev, data->irq, NULL,
+ exynos_tmu_threaded_irq,
+ IRQF_TRIGGER_RISING
+ | IRQF_SHARED | IRQF_ONESHOT,
+ dev_name(&pdev->dev), data);
if (ret) {
dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq);
goto err_sclk;
@@ -1117,10 +1125,6 @@ err_clk:
err_clk_sec:
if (!IS_ERR(data->clk_sec))
clk_unprepare(data->clk_sec);
-err_sensor:
- if (!IS_ERR(data->regulator))
- regulator_disable(data->regulator);
-
return ret;
}
@@ -1134,9 +1138,6 @@ static void exynos_tmu_remove(struct platform_device *pdev)
clk_unprepare(data->clk);
if (!IS_ERR(data->clk_sec))
clk_unprepare(data->clk_sec);
-
- if (!IS_ERR(data->regulator))
- regulator_disable(data->regulator);
}
#ifdef CONFIG_PM_SLEEP
diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
index f989b55a8aa8..6a8e386dbc8d 100644
--- a/drivers/thermal/sun8i_thermal.c
+++ b/drivers/thermal/sun8i_thermal.c
@@ -606,6 +606,18 @@ static const struct ths_thermal_chip sun50i_h6_ths = {
.calc_temp = sun8i_ths_calc_temp,
};
+static const struct ths_thermal_chip sun20i_d1_ths = {
+ .sensor_num = 1,
+ .has_bus_clk_reset = true,
+ .offset = 188552,
+ .scale = 673,
+ .temp_data_base = SUN50I_H6_THS_TEMP_DATA,
+ .calibrate = sun50i_h6_ths_calibrate,
+ .init = sun50i_h6_thermal_init,
+ .irq_ack = sun50i_h6_irq_ack,
+ .calc_temp = sun8i_ths_calc_temp,
+};
+
static const struct of_device_id of_ths_match[] = {
{ .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths },
{ .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
@@ -614,6 +626,7 @@ static const struct of_device_id of_ths_match[] = {
{ .compatible = "allwinner,sun50i-a100-ths", .data = &sun50i_a100_ths },
{ .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
{ .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
+ { .compatible = "allwinner,sun20i-d1-ths", .data = &sun20i_d1_ths },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, of_ths_match);
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 58958288b559..fa88d8707241 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -318,21 +318,34 @@ void thermal_governor_update_tz(struct thermal_zone_device *tz,
tz->governor->update_tz(tz, reason);
}
-void thermal_zone_device_critical(struct thermal_zone_device *tz)
+static void thermal_zone_device_halt(struct thermal_zone_device *tz, bool shutdown)
{
/*
* poweroff_delay_ms must be a carefully profiled positive value.
* Its a must for forced_emergency_poweroff_work to be scheduled.
*/
int poweroff_delay_ms = CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS;
+ const char *msg = "Temperature too high";
- dev_emerg(&tz->device, "%s: critical temperature reached, "
- "shutting down\n", tz->type);
+ dev_emerg(&tz->device, "%s: critical temperature reached\n", tz->type);
- hw_protection_shutdown("Temperature too high", poweroff_delay_ms);
+ if (shutdown)
+ hw_protection_shutdown(msg, poweroff_delay_ms);
+ else
+ hw_protection_reboot(msg, poweroff_delay_ms);
+}
+
+void thermal_zone_device_critical(struct thermal_zone_device *tz)
+{
+ thermal_zone_device_halt(tz, true);
}
EXPORT_SYMBOL(thermal_zone_device_critical);
+void thermal_zone_device_critical_reboot(struct thermal_zone_device *tz)
+{
+ thermal_zone_device_halt(tz, false);
+}
+
static void handle_critical_trips(struct thermal_zone_device *tz,
const struct thermal_trip *trip)
{
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 479c3b6917e4..e6a2b6f97be8 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -114,6 +114,7 @@ int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
int thermal_build_list_of_policies(char *buf);
void __thermal_zone_device_update(struct thermal_zone_device *tz,
enum thermal_notify_event event);
+void thermal_zone_device_critical_reboot(struct thermal_zone_device *tz);
void thermal_governor_update_tz(struct thermal_zone_device *tz,
enum thermal_notify_event reason);
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 1e0655b63259..4d6c22e0ed85 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -475,6 +475,7 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node *
struct thermal_zone_params tzp = {};
struct thermal_zone_device_ops *of_ops;
struct device_node *np;
+ const char *action;
int delay, pdelay;
int ntrips, mask;
int ret;
@@ -511,6 +512,11 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node *
mask = GENMASK_ULL((ntrips) - 1, 0);
+ ret = of_property_read_string(np, "critical-action", &action);
+ if (!ret)
+ if (!of_ops->critical && !strcasecmp(action, "reboot"))
+ of_ops->critical = thermal_zone_device_critical_reboot;
+
tz = thermal_zone_device_register_with_trips(np->name, trips, ntrips,
mask, data, of_ops, &tzp,
pdelay, delay);