Merge back thermal cotntrol material for v6.10.

Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml

@@ -13,11 +13,13 @@ description: Binding for Amlogic Thermal
 
 properties:
   compatible:
-    items:
-      - enum:
-          - amlogic,g12a-cpu-thermal
-          - amlogic,g12a-ddr-thermal
-      - const: amlogic,g12a-thermal
+    oneOf:
+      - items:
+          - enum:
+              - amlogic,g12a-cpu-thermal
+              - amlogic,g12a-ddr-thermal
+          - const: amlogic,g12a-thermal
+      - const: amlogic,a1-cpu-thermal
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml

@@ -18,13 +18,15 @@ properties:
     oneOf:
       - enum:
           - loongson,ls2k1000-thermal
+          - loongson,ls2k2000-thermal
       - items:
           - enum:
-              - loongson,ls2k2000-thermal
+              - loongson,ls2k0500-thermal
           - const: loongson,ls2k1000-thermal
 
   reg:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   interrupts:
     maxItems: 1
@@ -38,6 +40,24 @@ required:
   - interrupts
   - '#thermal-sensor-cells'
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - loongson,ls2k2000-thermal
+
+then:
+  properties:
+    reg:
+      minItems: 2
+      maxItems: 2
+
+else:
+  properties:
+    reg:
+      maxItems: 1
+
 unevaluatedProperties: false
 
 examples:

Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml

@@ -19,6 +19,9 @@ properties:
   compatible:
     enum:
       - mediatek,mt7988-lvts-ap
+      - mediatek,mt8186-lvts
+      - mediatek,mt8188-lvts-ap
+      - mediatek,mt8188-lvts-mcu
       - mediatek,mt8192-lvts-ap
       - mediatek,mt8192-lvts-mcu
       - mediatek,mt8195-lvts-ap
@@ -60,6 +63,8 @@ allOf:
         compatible:
           contains:
             enum:
+              - mediatek,mt8188-lvts-ap
+              - mediatek,mt8188-lvts-mcu
               - mediatek,mt8192-lvts-ap
               - mediatek,mt8192-lvts-mcu
     then:
@@ -75,6 +80,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - mediatek,mt8186-lvts
               - mediatek,mt8195-lvts-ap
               - mediatek,mt8195-lvts-mcu
     then:

Documentation/devicetree/bindings/thermal/qcom-lmh.yaml

@@ -17,10 +17,14 @@ description:
 
 properties:
   compatible:
-    enum:
-      - qcom,sc8180x-lmh
-      - qcom,sdm845-lmh
-      - qcom,sm8150-lmh
+    oneOf:
+      - enum:
+          - qcom,sc8180x-lmh
+          - qcom,sdm845-lmh
+          - qcom,sm8150-lmh
+      - items:
+          - const: qcom,qcm2290-lmh
+          - const: qcom,sm8150-lmh
 
   reg:
     items:

Documentation/devicetree/bindings/thermal/st,stih407-thermal.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/st,stih407-thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STi digital thermal sensor (DTS)
+
+maintainers:
+  - Patrice Chotard <patrice.chotard@foss.st.com>
+  - Lee Jones <lee@kernel.org>
+
+allOf:
+  - $ref: thermal-sensor.yaml
+
+properties:
+  compatible:
+    const: st,stih407-thermal
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: thermal
+
+  interrupts:
+    description:
+      For thermal sensors for which no interrupt has been defined, a polling
+      delay of 1000ms will be used to read the temperature from device.
+    maxItems: 1
+
+  '#thermal-sensor-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    temperature-sensor@91a0000 {
+        compatible = "st,stih407-thermal";
+        reg = <0x91a0000 0x28>;
+        clock-names = "thermal";
+        clocks = <&CLK_SYSIN>;
+        interrupts = <GIC_SPI 205 IRQ_TYPE_EDGE_RISING>;
+        #thermal-sensor-cells = <0>;
+    };
+...

Documentation/devicetree/bindings/thermal/st-thermal.txt

-Binding for Thermal Sensor driver for STMicroelectronics STi series of SoCs.
-
-Required parameters:
--------------------
-
-compatible : 	Should be "st,stih407-thermal"
-
-clock-names : 	Should be "thermal".
-		  See: Documentation/devicetree/bindings/resource-names.txt
-clocks : 	Phandle of the clock used by the thermal sensor.
-		  See: Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Optional parameters:
--------------------
-
-reg : 		For non-sysconf based sensors, this should be the physical base
-		address and length of the sensor's registers.
-interrupts :	Standard way to define interrupt number.
-		  NB: For thermal sensor's for which no interrupt has been
-		  defined, a polling delay of 1000ms will be used to read the
-		  temperature from device.
-
-Example:
-
-	temp0@91a0000 {
-		compatible = "st,stih407-thermal";
-		reg = <0x91a0000 0x28>;
-		clock-names = "thermal";
-		clocks = <&CLK_SYSIN>;
-		interrupts = <GIC_SPI 205 IRQ_TYPE_EDGE_RISING>;
-		st,passive_cooling_temp = <110>;
-	};

drivers/thermal/amlogic_thermal.c

@@ -220,6 +220,12 @@ static const struct amlogic_thermal_data amlogic_thermal_g12a_ddr_param = {
 	.regmap_config = &amlogic_thermal_regmap_config_g12a,
 };
 
+static const struct amlogic_thermal_data amlogic_thermal_a1_cpu_param = {
+	.u_efuse_off = 0x114,
+	.calibration_parameters = &amlogic_thermal_g12a,
+	.regmap_config = &amlogic_thermal_regmap_config_g12a,
+};
+
 static const struct of_device_id of_amlogic_thermal_match[] = {
 	{
 		.compatible = "amlogic,g12a-ddr-thermal",
@@ -229,6 +235,10 @@ static const struct of_device_id of_amlogic_thermal_match[] = {
 		.compatible = "amlogic,g12a-cpu-thermal",
 		.data = &amlogic_thermal_g12a_cpu_param,
 	},
+	{
+		.compatible = "amlogic,a1-cpu-thermal",
+		.data = &amlogic_thermal_a1_cpu_param,
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, of_amlogic_thermal_match);

drivers/thermal/armada_thermal.c

@@ -763,7 +763,6 @@ static void armada_set_sane_name(struct platform_device *pdev,
 				 struct armada_thermal_priv *priv)
 {
 	const char *name = dev_name(&pdev->dev);
-	char *insane_char;
 
 	if (strlen(name) > THERMAL_NAME_LENGTH) {
 		/*
@@ -781,12 +780,8 @@ static void armada_set_sane_name(struct platform_device *pdev,
 	/* Save the name locally */
 	strscpy(priv->zone_name, name, THERMAL_NAME_LENGTH);
 
-	/* Then check there are no '-' or hwmon core will complain */
-	do {
-		insane_char = strpbrk(priv->zone_name, "-");
-		if (insane_char)
-			*insane_char = '_';
-	} while (insane_char);
+	/* Then ensure there are no '-' or hwmon core will complain */
+	strreplace(priv->zone_name, '-', '_');
 }
 
 /*

drivers/thermal/gov_fair_share.c

@@ -17,10 +17,13 @@
 
 static int get_trip_level(struct thermal_zone_device *tz)
 {
-	const struct thermal_trip *trip, *level_trip = NULL;
+	const struct thermal_trip *level_trip = NULL;
+	const struct thermal_trip_desc *td;
 	int trip_level = -1;
 
-	for_each_trip(tz, trip) {
+	for_each_trip_desc(tz, td) {
+		const struct thermal_trip *trip = &td->trip;
+
 		if (trip->temperature >= tz->temperature)
 			continue;
 

drivers/thermal/gov_power_allocator.c

@@ -496,9 +496,11 @@ static void get_governor_trips(struct thermal_zone_device *tz,
 	const struct thermal_trip *first_passive = NULL;
 	const struct thermal_trip *last_passive = NULL;
 	const struct thermal_trip *last_active = NULL;
-	const struct thermal_trip *trip;
+	const struct thermal_trip_desc *td;
+
+	for_each_trip_desc(tz, td) {
+		const struct thermal_trip *trip = &td->trip;
 
-	for_each_trip(tz, trip) {
 		switch (trip->type) {
 		case THERMAL_TRIP_PASSIVE:
 			if (!first_passive) {

drivers/thermal/gov_step_wise.c

@@ -32,7 +32,6 @@ static unsigned long get_target_state(struct thermal_instance *instance,
 {
 	struct thermal_cooling_device *cdev = instance->cdev;
 	unsigned long cur_state;
-	unsigned long next_target;
 
 	/*
 	 * We keep this instance the way it is by default.
@@ -40,32 +39,26 @@ static unsigned long get_target_state(struct thermal_instance *instance,
 	 * cdev in use to determine the next_target.
 	 */
 	cdev->ops->get_cur_state(cdev, &cur_state);
-	next_target = instance->target;
 	dev_dbg(&cdev->device, "cur_state=%ld\n", cur_state);
 
 	if (!instance->initialized) {
-		if (throttle) {
-			next_target = clamp((cur_state + 1), instance->lower, instance->upper);
-		} else {
-			next_target = THERMAL_NO_TARGET;
-		}
+		if (throttle)
+			return clamp(cur_state + 1, instance->lower, instance->upper);
 
-		return next_target;
+		return THERMAL_NO_TARGET;
 	}
 
 	if (throttle) {
 		if (trend == THERMAL_TREND_RAISING)
-			next_target = clamp((cur_state + 1), instance->lower, instance->upper);
-	} else {
-		if (trend == THERMAL_TREND_DROPPING) {
-			if (cur_state <= instance->lower)
-				next_target = THERMAL_NO_TARGET;
-			else
-				next_target = clamp((cur_state - 1), instance->lower, instance->upper);
-		}
+			return clamp(cur_state + 1, instance->lower, instance->upper);
+	} else if (trend == THERMAL_TREND_DROPPING) {
+		if (cur_state <= instance->lower)
+			return THERMAL_NO_TARGET;
+
+		return clamp(cur_state - 1, instance->lower, instance->upper);
 	}
 
-	return next_target;
+	return instance->target;
 }
 
 static void thermal_zone_trip_update(struct thermal_zone_device *tz,
@@ -99,15 +92,13 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz,
 		if (instance->initialized && old_target == instance->target)
 			continue;
 
-		if (old_target == THERMAL_NO_TARGET &&
-		    instance->target != THERMAL_NO_TARGET) {
-			/* Activate a passive thermal instance */
-			if (trip->type == THERMAL_TRIP_PASSIVE)
+		if (trip->type == THERMAL_TRIP_PASSIVE) {
+			/* If needed, update the status of passive polling. */
+			if (old_target == THERMAL_NO_TARGET &&
+			    instance->target != THERMAL_NO_TARGET)
 				tz->passive++;
-		} else if (old_target != THERMAL_NO_TARGET &&
-			   instance->target == THERMAL_NO_TARGET) {
-			/* Deactivate a passive thermal instance */
-			if (trip->type == THERMAL_TRIP_PASSIVE)
+			else if (old_target != THERMAL_NO_TARGET &&
+				 instance->target == THERMAL_NO_TARGET)
 				tz->passive--;
 		}
 

drivers/thermal/intel/int340x_thermal/acpi_thermal_rel.c

@@ -309,7 +309,7 @@ static int acpi_parse_psvt(acpi_handle handle, int *psvt_count, struct psvt **ps
 
 		if (knob->type == ACPI_TYPE_STRING) {
 			memset(&psvt->limit, 0, sizeof(u64));
-			strncpy(psvt->limit.string, psvt_ptr->limit.str_ptr, knob->string.length);
+			strscpy(psvt->limit.string, psvt_ptr->limit.str_ptr, ACPI_LIMIT_STR_MAX_LEN);
 		} else {
 			psvt->limit.integer = psvt_ptr->limit.integer;
 		}
@@ -468,7 +468,7 @@ static int fill_psvt(char __user *ubuf)
 		psvt_user[i].unlimit_coeff = psvts[i].unlimit_coeff;
 		psvt_user[i].control_knob_type = psvts[i].control_knob_type;
 		if (psvt_user[i].control_knob_type == ACPI_TYPE_STRING)
-			strncpy(psvt_user[i].limit.string, psvts[i].limit.string,
+			strscpy(psvt_user[i].limit.string, psvts[i].limit.string,
 				ACPI_LIMIT_STR_MAX_LEN);
 		else
 			psvt_user[i].limit.integer = psvts[i].limit.integer;

drivers/thermal/intel/intel_hfi.c

@@ -159,6 +159,7 @@ struct hfi_cpu_info {
 static DEFINE_PER_CPU(struct hfi_cpu_info, hfi_cpu_info) = { .index = -1 };
 
 static int max_hfi_instances;
+static int hfi_clients_nr;
 static struct hfi_instance *hfi_instances;
 
 static struct hfi_features hfi_features;
@@ -477,8 +478,11 @@ void intel_hfi_online(unsigned int cpu)
 enable:
 	cpumask_set_cpu(cpu, hfi_instance->cpus);
 
-	/* Enable this HFI instance if this is its first online CPU. */
-	if (cpumask_weight(hfi_instance->cpus) == 1) {
+	/*
+	 * Enable this HFI instance if this is its first online CPU and
+	 * there are user-space clients of thermal events.
+	 */
+	if (cpumask_weight(hfi_instance->cpus) == 1 && hfi_clients_nr > 0) {
 		hfi_set_hw_table(hfi_instance);
 		hfi_enable();
 	}
@@ -573,18 +577,33 @@ static __init int hfi_parse_features(void)
 	return 0;
 }
 
-static void hfi_do_enable(void)
+/*
+ * If concurrency is not prevented by other means, the HFI enable/disable
+ * routines must be called under hfi_instance_lock."
+ */
+static void hfi_enable_instance(void *ptr)
+{
+	hfi_set_hw_table(ptr);
+	hfi_enable();
+}
+
+static void hfi_disable_instance(void *ptr)
+{
+	hfi_disable();
+}
+
+static void hfi_syscore_resume(void)
 {
 	/* This code runs only on the boot CPU. */
 	struct hfi_cpu_info *info = &per_cpu(hfi_cpu_info, 0);
 	struct hfi_instance *hfi_instance = info->hfi_instance;
 
 	/* No locking needed. There is no concurrency with CPU online. */
-	hfi_set_hw_table(hfi_instance);
-	hfi_enable();
+	if (hfi_clients_nr > 0)
+		hfi_enable_instance(hfi_instance);
 }
 
-static int hfi_do_disable(void)
+static int hfi_syscore_suspend(void)
 {
 	/* No locking needed. There is no concurrency with CPU offline. */
 	hfi_disable();
@@ -593,8 +612,58 @@ static int hfi_do_disable(void)
 }
 
 static struct syscore_ops hfi_pm_ops = {
-	.resume = hfi_do_enable,
-	.suspend = hfi_do_disable,
+	.resume = hfi_syscore_resume,
+	.suspend = hfi_syscore_suspend,
+};
+
+static int hfi_thermal_notify(struct notifier_block *nb, unsigned long state,
+			      void *_notify)
+{
+	struct thermal_genl_notify *notify = _notify;
+	struct hfi_instance *hfi_instance;
+	smp_call_func_t func = NULL;
+	unsigned int cpu;
+	int i;
+
+	if (notify->mcgrp != THERMAL_GENL_EVENT_GROUP)
+		return NOTIFY_DONE;
+
+	if (state != THERMAL_NOTIFY_BIND && state != THERMAL_NOTIFY_UNBIND)
+		return NOTIFY_DONE;
+
+	mutex_lock(&hfi_instance_lock);
+
+	switch (state) {
+	case THERMAL_NOTIFY_BIND:
+		if (++hfi_clients_nr == 1)
+			func = hfi_enable_instance;
+		break;
+	case THERMAL_NOTIFY_UNBIND:
+		if (--hfi_clients_nr == 0)
+			func = hfi_disable_instance;
+		break;
+	}
+
+	if (!func)
+		goto out;
+
+	for (i = 0; i < max_hfi_instances; i++) {
+		hfi_instance = &hfi_instances[i];
+		if (cpumask_empty(hfi_instance->cpus))
+			continue;
+
+		cpu = cpumask_any(hfi_instance->cpus);
+		smp_call_function_single(cpu, func, hfi_instance, true);
+	}
+
+out:
+	mutex_unlock(&hfi_instance_lock);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block hfi_thermal_nb = {
+	.notifier_call = hfi_thermal_notify,
 };
 
 void __init intel_hfi_init(void)
@@ -628,10 +697,22 @@ void __init intel_hfi_init(void)
 	if (!hfi_updates_wq)
 		goto err_nomem;
 
+	/*
+	 * Both thermal core and Intel HFI can not be build as modules.
+	 * As kernel build-in drivers they are initialized before user-space
+	 * starts, hence we can not miss BIND/UNBIND events when applications
+	 * add/remove thermal multicast group to/from a netlink socket.
+	 */
+	if (thermal_genl_register_notifier(&hfi_thermal_nb))
+		goto err_nl_notif;
+
 	register_syscore_ops(&hfi_pm_ops);
 
 	return;
 
+err_nl_notif:
+	destroy_workqueue(hfi_updates_wq);
+
 err_nomem:
 	for (j = 0; j < i; ++j) {
 		hfi_instance = &hfi_instances[j];

drivers/thermal/k3_bandgap.c

@@ -78,7 +78,6 @@ static const int k3_adc_to_temp[] = {
 
 struct k3_bandgap {
 	void __iomem *base;
-	const struct k3_bandgap_data *conf;
 };
 
 /* common data structures */

drivers/thermal/loongson2_thermal.c

@@ -14,58 +14,81 @@
 #include <linux/property.h>
 #include <linux/thermal.h>
 #include <linux/units.h>
+
 #include "thermal_hwmon.h"
 
-#define LOONGSON2_MAX_SENSOR_SEL_NUM			3
+#define LOONGSON2_MAX_SENSOR_SEL_NUM	3
+
+#define LOONGSON2_THSENS_CTRL_HI_REG	0x0
+#define LOONGSON2_THSENS_CTRL_LOW_REG	0x8
+#define LOONGSON2_THSENS_STATUS_REG	0x10
+#define LOONGSON2_THSENS_OUT_REG	0x14
 
-#define LOONGSON2_THSENS_CTRL_HI_REG			0x0
-#define LOONGSON2_THSENS_CTRL_LOW_REG			0x8
-#define LOONGSON2_THSENS_STATUS_REG			0x10
-#define LOONGSON2_THSENS_OUT_REG			0x14
+#define LOONGSON2_THSENS_INT_LO		BIT(0)
+#define LOONGSON2_THSENS_INT_HIGH	BIT(1)
+#define LOONGSON2_THSENS_INT_EN		(LOONGSON2_THSENS_INT_LO | \
+					 LOONGSON2_THSENS_INT_HIGH)
+#define LOONGSON2_THSENS_OUT_MASK	0xFF
 
-#define LOONGSON2_THSENS_INT_LO				BIT(0)
-#define LOONGSON2_THSENS_INT_HIGH			BIT(1)
-#define LOONGSON2_THSENS_OUT_MASK			0xFF
+/*
+ * This flag is used to indicate the temperature reading
+ * method of the Loongson-2K2000
+ */
+#define LS2K2000_THSENS_OUT_FLAG	BIT(0)
 
 struct loongson2_thermal_chip_data {
-	unsigned int	thermal_sensor_sel;
+	unsigned int thermal_sensor_sel;
+	unsigned int flags;
 };
 
 struct loongson2_thermal_data {
-	void __iomem	*regs;
+	void __iomem *ctrl_reg;
+	void __iomem *temp_reg;
 	const struct loongson2_thermal_chip_data *chip_data;
 };
 
+static void loongson2_set_ctrl_regs(struct loongson2_thermal_data *data,
+				    int ctrl_data, bool low, bool enable)
+{
+	int reg_ctrl = 0;
+	int reg_off  = data->chip_data->thermal_sensor_sel * 2;
+	int ctrl_reg = low ? LOONGSON2_THSENS_CTRL_LOW_REG : LOONGSON2_THSENS_CTRL_HI_REG;
+
+	reg_ctrl = ctrl_data + HECTO;
+	reg_ctrl |= enable ? 0x100 : 0;
+	writew(reg_ctrl, data->ctrl_reg + ctrl_reg + reg_off);
+}
+
 static int loongson2_thermal_set(struct loongson2_thermal_data *data,
-					int low, int high, bool enable)
+				 int low, int high, bool enable)
 {
-	u64 reg_ctrl = 0;
-	int reg_off = data->chip_data->thermal_sensor_sel * 2;
+	/* Set low temperature threshold */
+	loongson2_set_ctrl_regs(data, clamp(-40, low, high), true, enable);
 
-	low = clamp(-40, low, high);
-	high = clamp(125, low, high);
+	/* Set high temperature threshold */
+	loongson2_set_ctrl_regs(data, clamp(125, low, high), false, enable);
 
-	low += HECTO;
-	high += HECTO;
+	return 0;
+}
 
-	reg_ctrl = low;
-	reg_ctrl |= enable ? 0x100 : 0;
-	writew(reg_ctrl, data->regs + LOONGSON2_THSENS_CTRL_LOW_REG + reg_off);
+static int loongson2_2k1000_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	int val;
+	struct loongson2_thermal_data *data = thermal_zone_device_priv(tz);
 
-	reg_ctrl = high;
-	reg_ctrl |= enable ? 0x100 : 0;
-	writew(reg_ctrl, data->regs + LOONGSON2_THSENS_CTRL_HI_REG + reg_off);
+	val = readl(data->ctrl_reg + LOONGSON2_THSENS_OUT_REG);
+	*temp = ((val & LOONGSON2_THSENS_OUT_MASK) - HECTO) * KILO;
 
 	return 0;
 }
 
-static int loongson2_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
+static int loongson2_2k2000_get_temp(struct thermal_zone_device *tz, int *temp)
 {
-	u32 reg_val;
+	int val;
 	struct loongson2_thermal_data *data = thermal_zone_device_priv(tz);
 
-	reg_val = readl(data->regs + LOONGSON2_THSENS_OUT_REG);
-	*temp = ((reg_val & LOONGSON2_THSENS_OUT_MASK) - HECTO) * KILO;
+	val = readl(data->temp_reg);
+	*temp = ((val & 0xffff) * 820 / 0x4000 - 311) * KILO;
 
 	return 0;
 }
@@ -75,8 +98,7 @@ static irqreturn_t loongson2_thermal_irq_thread(int irq, void *dev)
 	struct thermal_zone_device *tzd = dev;
 	struct loongson2_thermal_data *data = thermal_zone_device_priv(tzd);
 
-	writeb(LOONGSON2_THSENS_INT_LO | LOONGSON2_THSENS_INT_HIGH, data->regs +
-		LOONGSON2_THSENS_STATUS_REG);
+	writeb(LOONGSON2_THSENS_INT_EN, data->ctrl_reg + LOONGSON2_THSENS_STATUS_REG);
 
 	thermal_zone_device_update(tzd, THERMAL_EVENT_UNSPECIFIED);
 
@@ -90,8 +112,8 @@ static int loongson2_thermal_set_trips(struct thermal_zone_device *tz, int low,
 	return loongson2_thermal_set(data, low/MILLI, high/MILLI, true);
 }
 
-static const struct thermal_zone_device_ops loongson2_of_thermal_ops = {
-	.get_temp = loongson2_thermal_get_temp,
+static struct thermal_zone_device_ops loongson2_of_thermal_ops = {
+	.get_temp = loongson2_2k1000_get_temp,
 	.set_trips = loongson2_thermal_set_trips,
 };
 
@@ -108,22 +130,30 @@ static int loongson2_thermal_probe(struct platform_device *pdev)
 
 	data->chip_data = device_get_match_data(dev);
 
-	data->regs = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(data->regs))
-		return PTR_ERR(data->regs);
+	data->ctrl_reg = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(data->ctrl_reg))
+		return PTR_ERR(data->ctrl_reg);
+
+	/* The temperature output register is separate for Loongson-2K2000 */
+	if (data->chip_data->flags & LS2K2000_THSENS_OUT_FLAG) {
+		data->temp_reg = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(data->temp_reg))
+			return PTR_ERR(data->temp_reg);
+
+		loongson2_of_thermal_ops.get_temp = loongson2_2k2000_get_temp;
+	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
 		return irq;
 
-	writeb(LOONGSON2_THSENS_INT_LO | LOONGSON2_THSENS_INT_HIGH, data->regs +
-		LOONGSON2_THSENS_STATUS_REG);
+	writeb(LOONGSON2_THSENS_INT_EN, data->ctrl_reg + LOONGSON2_THSENS_STATUS_REG);
 
 	loongson2_thermal_set(data, 0, 0, false);
 
 	for (i = 0; i <= LOONGSON2_MAX_SENSOR_SEL_NUM; i++) {
 		tzd = devm_thermal_of_zone_register(dev, i, data,
-			&loongson2_of_thermal_ops);
+						    &loongson2_of_thermal_ops);
 
 		if (!IS_ERR(tzd))
 			break;
@@ -135,7 +165,7 @@ static int loongson2_thermal_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(dev, irq, NULL, loongson2_thermal_irq_thread,
-			IRQF_ONESHOT, "loongson2_thermal", tzd);
+					IRQF_ONESHOT, "loongson2_thermal", tzd);
 	if (ret < 0)
 		return dev_err_probe(dev, ret, "failed to request alarm irq\n");
 
@@ -146,6 +176,12 @@ static int loongson2_thermal_probe(struct platform_device *pdev)
 
 static const struct loongson2_thermal_chip_data loongson2_thermal_ls2k1000_data = {
 	.thermal_sensor_sel = 0,
+	.flags = 0,
+};
+
+static const struct loongson2_thermal_chip_data loongson2_thermal_ls2k2000_data = {
+	.thermal_sensor_sel = 0,
+	.flags = LS2K2000_THSENS_OUT_FLAG,
 };
 
 static const struct of_device_id of_loongson2_thermal_match[] = {
@@ -153,6 +189,10 @@ static const struct of_device_id of_loongson2_thermal_match[] = {
 		.compatible = "loongson,ls2k1000-thermal",
 		.data = &loongson2_thermal_ls2k1000_data,
 	},
+	{
+		.compatible = "loongson,ls2k2000-thermal",
+		.data = &loongson2_thermal_ls2k2000_data,
+	},
 	{ /* end */ }
 };
 MODULE_DEVICE_TABLE(of, of_loongson2_thermal_match);
@@ -167,4 +207,5 @@ static struct platform_driver loongson2_thermal_driver = {
 module_platform_driver(loongson2_thermal_driver);
 
 MODULE_DESCRIPTION("Loongson2 thermal driver");
+MODULE_AUTHOR("Loongson Technology Corporation Limited");
 MODULE_LICENSE("GPL");

drivers/thermal/qcom/lmh.c

@@ -95,6 +95,9 @@ static int lmh_probe(struct platform_device *pdev)
 	unsigned int enable_alg;
 	u32 node_id;
 
+	if (!qcom_scm_is_available())
+		return -EPROBE_DEFER;
+
 	lmh_data = devm_kzalloc(dev, sizeof(*lmh_data), GFP_KERNEL);
 	if (!lmh_data)
 		return -ENOMEM;

drivers/thermal/qcom/qcom-spmi-temp-alarm.c

@@ -74,7 +74,6 @@ struct qpnp_tm_chip {
 	long				temp;
 	unsigned int			thresh;
 	unsigned int			stage;
-	unsigned int			prev_stage;
 	unsigned int			base;
 	/* protects .thresh, .stage and chip registers */
 	struct mutex			lock;

drivers/thermal/qcom/tsens-v2.c

@@ -107,6 +107,7 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
 static const struct tsens_ops ops_generic_v2 = {
 	.init		= init_common,
 	.get_temp	= get_temp_tsens_valid,
+	.resume		= tsens_resume_common,
 };
 
 struct tsens_plat_data data_tsens_v2 = {

drivers/thermal/qcom/tsens.c

@@ -17,6 +17,7 @@
 #include <linux/pm.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
+#include <linux/suspend.h>
 #include <linux/thermal.h>
 #include "../thermal_hwmon.h"
 #include "tsens.h"
@@ -264,7 +265,7 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *p1,
 	for (i = 0; i < priv->num_sensors; i++) {
 		dev_dbg(priv->dev,
 			"%s: sensor%d - data_point1:%#x data_point2:%#x\n",
-			__func__, i, p1[i], p2[i]);
+			__func__, i, p1[i], p2 ? p2[i] : 0);
 
 		if (!priv->sensor[i].slope)
 			priv->sensor[i].slope = SLOPE_DEFAULT;
@@ -1193,6 +1194,36 @@ static int tsens_register_irq(struct tsens_priv *priv, char *irqname,
 	return ret;
 }
 
+#ifdef CONFIG_SUSPEND
+static int tsens_reinit(struct tsens_priv *priv)
+{
+	if (tsens_version(priv) >= VER_2_X) {
+		/*
+		 * Re-enable the watchdog, unmask the bark.
+		 * Disable cycle completion monitoring
+		 */
+		if (priv->feat->has_watchdog) {
+			regmap_field_write(priv->rf[WDOG_BARK_MASK], 0);
+			regmap_field_write(priv->rf[CC_MON_MASK], 1);
+		}
+
+		/* Re-enable interrupts */
+		tsens_enable_irq(priv);
+	}
+
+	return 0;
+}
+
+int tsens_resume_common(struct tsens_priv *priv)
+{
+	if (pm_suspend_target_state == PM_SUSPEND_MEM)
+		tsens_reinit(priv);
+
+	return 0;
+}
+
+#endif /* !CONFIG_SUSPEND */
+
 static int tsens_register(struct tsens_priv *priv)
 {
 	int i, ret;

drivers/thermal/qcom/tsens.h

@@ -634,6 +634,11 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mo
 int init_common(struct tsens_priv *priv);
 int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);
 int get_temp_common(const struct tsens_sensor *s, int *temp);
+#ifdef CONFIG_SUSPEND
+int tsens_resume_common(struct tsens_priv *priv);
+#else
+#define tsens_resume_common            NULL
+#endif
 
 /* TSENS target */
 extern struct tsens_plat_data data_8960;

drivers/thermal/rcar_gen3_thermal.c

@@ -65,26 +65,29 @@
 
 #define TSC_MAX_NUM	5
 
-/* Structure for thermal temperature calculation */
-struct equation_coefs {
-	int a1;
-	int b1;
-	int a2;
-	int b2;
-};
-
 struct rcar_gen3_thermal_priv;
 
 struct rcar_thermal_info {
-	int ths_tj_1;
+	int scale;
+	int adj_below;
+	int adj_above;
 	void (*read_fuses)(struct rcar_gen3_thermal_priv *priv);
 };
 
+struct equation_set_coef {
+	int a;
+	int b;
+};
+
 struct rcar_gen3_thermal_tsc {
+	struct rcar_gen3_thermal_priv *priv;
 	void __iomem *base;
 	struct thermal_zone_device *zone;
-	struct equation_coefs coef;
-	int tj_t;
+	/* Different coefficients are used depending on a threshold. */
+	struct {
+		struct equation_set_coef below;
+		struct equation_set_coef above;
+	} coef;
 	int thcode[3];
 };
 
@@ -93,6 +96,7 @@ struct rcar_gen3_thermal_priv {
 	struct thermal_zone_device_ops ops;
 	unsigned int num_tscs;
 	int ptat[3];
+	int tj_t;
 	const struct rcar_thermal_info *info;
 };
 
@@ -111,84 +115,75 @@ static inline void rcar_gen3_thermal_write(struct rcar_gen3_thermal_tsc *tsc,
 /*
  * Linear approximation for temperature
  *
- * [reg] = [temp] * a + b => [temp] = ([reg] - b) / a
+ * [temp] = ((thadj - [reg]) * a) / b + adj
+ * [reg] = thadj - ([temp] - adj) * b / a
  *
  * The constants a and b are calculated using two triplets of int values PTAT
  * and THCODE. PTAT and THCODE can either be read from hardware or use hard
- * coded values from driver. The formula to calculate a and b are taken from
- * BSP and sparsely documented and understood.
+ * coded values from the driver. The formula to calculate a and b are taken from
+ * the datasheet. Different calculations are needed for a and b depending on
+ * if the input variables ([temp] or [reg]) are above or below a threshold. The
+ * threshold is also calculated from PTAT and THCODE using formulas from the
+ * datasheet.
+ *
+ * The constant thadj is one of the THCODE values, which one to use depends on
+ * the threshold and input value.
  *
- * Examining the linear formula and the formula used to calculate constants a
- * and b while knowing that the span for PTAT and THCODE values are between
- * 0x000 and 0xfff the largest integer possible is 0xfff * 0xfff == 0xffe001.
- * Integer also needs to be signed so that leaves 7 bits for binary
- * fixed point scaling.
+ * The constants adj is taken verbatim from the datasheet. Two values exists,
+ * which one to use depends on the input value and the calculated threshold.
+ * Furthermore different SoC models supported by the driver have different sets
+ * of values. The values for each model are stored in the device match data.
  */
 
-#define FIXPT_SHIFT 7
-#define FIXPT_INT(_x) ((_x) << FIXPT_SHIFT)
-#define INT_FIXPT(_x) ((_x) >> FIXPT_SHIFT)
-#define FIXPT_DIV(_a, _b) DIV_ROUND_CLOSEST(((_a) << FIXPT_SHIFT), (_b))
-#define FIXPT_TO_MCELSIUS(_x) ((_x) * 1000 >> FIXPT_SHIFT)
-
-#define RCAR3_THERMAL_GRAN 500 /* mili Celsius */
-
-/* no idea where these constants come from */
-#define TJ_3 -41
-
-static void rcar_gen3_thermal_calc_coefs(struct rcar_gen3_thermal_priv *priv,
-					 struct rcar_gen3_thermal_tsc *tsc,
-					 int ths_tj_1)
+static void rcar_gen3_thermal_shared_coefs(struct rcar_gen3_thermal_priv *priv)
 {
-	/* TODO: Find documentation and document constant calculation formula */
-
-	/*
-	 * Division is not scaled in BSP and if scaled it might overflow
-	 * the dividend (4095 * 4095 << 14 > INT_MAX) so keep it unscaled
-	 */
-	tsc->tj_t = (FIXPT_INT((priv->ptat[1] - priv->ptat[2]) * (ths_tj_1 - TJ_3))
-		     / (priv->ptat[0] - priv->ptat[2])) + FIXPT_INT(TJ_3);
-
-	tsc->coef.a1 = FIXPT_DIV(FIXPT_INT(tsc->thcode[1] - tsc->thcode[2]),
-				 tsc->tj_t - FIXPT_INT(TJ_3));
-	tsc->coef.b1 = FIXPT_INT(tsc->thcode[2]) - tsc->coef.a1 * TJ_3;
-
-	tsc->coef.a2 = FIXPT_DIV(FIXPT_INT(tsc->thcode[1] - tsc->thcode[0]),
-				 tsc->tj_t - FIXPT_INT(ths_tj_1));
-	tsc->coef.b2 = FIXPT_INT(tsc->thcode[0]) - tsc->coef.a2 * ths_tj_1;
+	priv->tj_t =
+		DIV_ROUND_CLOSEST((priv->ptat[1] - priv->ptat[2]) * priv->info->scale,
+				  priv->ptat[0] - priv->ptat[2])
+		+ priv->info->adj_below;
 }
-
-static int rcar_gen3_thermal_round(int temp)
+static void rcar_gen3_thermal_tsc_coefs(struct rcar_gen3_thermal_priv *priv,
+					struct rcar_gen3_thermal_tsc *tsc)
 {
-	int result, round_offs;
+	tsc->coef.below.a = priv->info->scale * (priv->ptat[2] - priv->ptat[1]);
+	tsc->coef.above.a = priv->info->scale * (priv->ptat[0] - priv->ptat[1]);
 
-	round_offs = temp >= 0 ? RCAR3_THERMAL_GRAN / 2 :
-		-RCAR3_THERMAL_GRAN / 2;
-	result = (temp + round_offs) / RCAR3_THERMAL_GRAN;
-	return result * RCAR3_THERMAL_GRAN;
+	tsc->coef.below.b = (priv->ptat[2] - priv->ptat[0]) * (tsc->thcode[2] - tsc->thcode[1]);
+	tsc->coef.above.b = (priv->ptat[0] - priv->ptat[2]) * (tsc->thcode[1] - tsc->thcode[0]);
 }
 
 static int rcar_gen3_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
 {
 	struct rcar_gen3_thermal_tsc *tsc = thermal_zone_device_priv(tz);
-	int mcelsius, val;
-	int reg;
+	struct rcar_gen3_thermal_priv *priv = tsc->priv;
+	const struct equation_set_coef *coef;
+	int adj, decicelsius, reg, thcode;
 
 	/* Read register and convert to mili Celsius */
 	reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK;
 
-	if (reg <= tsc->thcode[1])
-		val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1,
-				tsc->coef.a1);
-	else
-		val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2,
-				tsc->coef.a2);
-	mcelsius = FIXPT_TO_MCELSIUS(val);
+	if (reg < tsc->thcode[1]) {
+		adj = priv->info->adj_below;
+		coef = &tsc->coef.below;
+		thcode = tsc->thcode[2];
+	} else {
+		adj = priv->info->adj_above;
+		coef = &tsc->coef.above;
+		thcode = tsc->thcode[0];
+	}
+
+	/*
+	 * The dividend can't be grown as it might overflow, instead shorten the
+	 * divisor to convert to decidegree Celsius. If we convert after the
+	 * division precision is lost as we will scale up from whole degrees
+	 * Celsius.
+	 */
+	decicelsius = DIV_ROUND_CLOSEST(coef->a * (thcode - reg), coef->b / 10);
 
 	/* Guaranteed operating range is -40C to 125C. */
 
-	/* Round value to device granularity setting */
-	*temp = rcar_gen3_thermal_round(mcelsius);
+	/* Reporting is done in millidegree Celsius */
+	*temp = decicelsius * 100 + adj * 1000;
 
 	return 0;
 }
@@ -196,15 +191,22 @@ static int rcar_gen3_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
 static int rcar_gen3_thermal_mcelsius_to_temp(struct rcar_gen3_thermal_tsc *tsc,
 					      int mcelsius)
 {
-	int celsius, val;
+	struct rcar_gen3_thermal_priv *priv = tsc->priv;
+	const struct equation_set_coef *coef;
+	int adj, celsius, thcode;
 
 	celsius = DIV_ROUND_CLOSEST(mcelsius, 1000);
-	if (celsius <= INT_FIXPT(tsc->tj_t))
-		val = celsius * tsc->coef.a1 + tsc->coef.b1;
-	else
-		val = celsius * tsc->coef.a2 + tsc->coef.b2;
+	if (celsius < priv->tj_t) {
+		coef = &tsc->coef.below;
+		adj = priv->info->adj_below;
+		thcode = tsc->thcode[2];
+	} else {
+		coef = &tsc->coef.above;
+		adj = priv->info->adj_above;
+		thcode = tsc->thcode[0];
+	}
 
-	return INT_FIXPT(val);
+	return thcode - DIV_ROUND_CLOSEST((celsius - adj) * coef->b, coef->a);
 }
 
 static int rcar_gen3_thermal_set_trips(struct thermal_zone_device *tz, int low, int high)
@@ -369,17 +371,23 @@ static void rcar_gen3_thermal_init(struct rcar_gen3_thermal_priv *priv,
 }
 
 static const struct rcar_thermal_info rcar_m3w_thermal_info = {
-	.ths_tj_1 = 116,
+	.scale = 157,
+	.adj_below = -41,
+	.adj_above = 116,
 	.read_fuses = rcar_gen3_thermal_read_fuses_gen3,
 };
 
 static const struct rcar_thermal_info rcar_gen3_thermal_info = {
-	.ths_tj_1 = 126,
+	.scale = 167,
+	.adj_below = -41,
+	.adj_above = 126,
 	.read_fuses = rcar_gen3_thermal_read_fuses_gen3,
 };
 
 static const struct rcar_thermal_info rcar_gen4_thermal_info = {
-	.ths_tj_1 = 126,
+	.scale = 167,
+	.adj_below = -41,
+	.adj_above = 126,
 	.read_fuses = rcar_gen3_thermal_read_fuses_gen4,
 };
 
@@ -516,6 +524,7 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 			goto error_unregister;
 		}
 
+		tsc->priv = priv;
 		tsc->base = devm_ioremap_resource(dev, res);
 		if (IS_ERR(tsc->base)) {
 			ret = PTR_ERR(tsc->base);
@@ -530,11 +539,13 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 	if (!rcar_gen3_thermal_read_fuses(priv))
 		dev_info(dev, "No calibration values fused, fallback to driver values\n");
 
+	rcar_gen3_thermal_shared_coefs(priv);
+
 	for (i = 0; i < priv->num_tscs; i++) {
 		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
 
 		rcar_gen3_thermal_init(priv, tsc);
-		rcar_gen3_thermal_calc_coefs(priv, tsc, priv->info->ths_tj_1);
+		rcar_gen3_thermal_tsc_coefs(priv, tsc);
 
 		zone = devm_thermal_of_zone_register(dev, i, tsc, &priv->ops);
 		if (IS_ERR(zone)) {

drivers/thermal/thermal_core.c

@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/kdev_t.h>
 #include <linux/idr.h>
+#include <linux/list_sort.h>
 #include <linux/thermal.h>
 #include <linux/reboot.h>
 #include <linux/string.h>
@@ -361,49 +362,48 @@ static void handle_critical_trips(struct thermal_zone_device *tz,
 }
 
 static void handle_thermal_trip(struct thermal_zone_device *tz,
-				struct thermal_trip *trip)
+				struct thermal_trip_desc *td,
+				struct list_head *way_up_list,
+				struct list_head *way_down_list)
 {
+	const struct thermal_trip *trip = &td->trip;
+	int old_threshold;
+
 	if (trip->temperature == THERMAL_TEMP_INVALID)
 		return;
 
-	if (tz->last_temperature == THERMAL_TEMP_INVALID) {
-		/* Initialization. */
-		trip->threshold = trip->temperature;
-		if (tz->temperature >= trip->threshold)
-			trip->threshold -= trip->hysteresis;
-	} else if (tz->last_temperature < trip->threshold) {
+	/*
+	 * If the trip temperature or hysteresis has been updated recently,
+	 * the threshold needs to be computed again using the new values.
+	 * However, its initial value still reflects the old ones and that
+	 * is what needs to be compared with the previous zone temperature
+	 * to decide which action to take.
+	 */
+	old_threshold = td->threshold;
+	td->threshold = trip->temperature;
+
+	if (tz->last_temperature >= old_threshold &&
+	    tz->last_temperature != THERMAL_TEMP_INVALID) {
 		/*
-		 * The trip threshold is equal to the trip temperature, unless
-		 * the latter has changed in the meantime.  In either case,
-		 * the trip is crossed if the current zone temperature is at
-		 * least equal to its temperature, but otherwise ensure that
-		 * the threshold and the trip temperature will be equal.
+		 * Mitigation is under way, so it needs to stop if the zone
+		 * temperature falls below the low temperature of the trip.
+		 * In that case, the trip temperature becomes the new threshold.
 		 */
-		if (tz->temperature >= trip->temperature) {
-			thermal_notify_tz_trip_up(tz, trip);
-			thermal_debug_tz_trip_up(tz, trip);
-			trip->threshold = trip->temperature - trip->hysteresis;
+		if (tz->temperature < trip->temperature - trip->hysteresis) {
+			list_add(&td->notify_list_node, way_down_list);
+			td->notify_temp = trip->temperature - trip->hysteresis;
 		} else {
-			trip->threshold = trip->temperature;
+			td->threshold -= trip->hysteresis;
 		}
-	} else {
+	} else if (tz->temperature >= trip->temperature) {
 		/*
-		 * The previous zone temperature was above or equal to the trip
-		 * threshold, which would be equal to the "low temperature" of
-		 * the trip (its temperature minus its hysteresis), unless the
-		 * trip temperature or hysteresis had changed.  In either case,
-		 * the trip is crossed if the current zone temperature is below
-		 * the low temperature of the trip, but otherwise ensure that
-		 * the trip threshold will be equal to the low temperature of
-		 * the trip.
+		 * There is no mitigation under way, so it needs to be started
+		 * if the zone temperature exceeds the trip one.  The new
+		 * threshold is then set to the low temperature of the trip.
 		 */
-		if (tz->temperature < trip->temperature - trip->hysteresis) {
-			thermal_notify_tz_trip_down(tz, trip);
-			thermal_debug_tz_trip_down(tz, trip);
-			trip->threshold = trip->temperature;
-		} else {
-			trip->threshold = trip->temperature - trip->hysteresis;
-		}
+		list_add_tail(&td->notify_list_node, way_up_list);
+		td->notify_temp = trip->temperature;
+		td->threshold -= trip->hysteresis;
 	}
 
 	if (trip->type == THERMAL_TRIP_CRITICAL || trip->type == THERMAL_TRIP_HOT)
@@ -455,10 +455,24 @@ static void thermal_zone_device_init(struct thermal_zone_device *tz)
 		pos->initialized = false;
 }
 
+static int thermal_trip_notify_cmp(void *ascending, const struct list_head *a,
+				   const struct list_head *b)
+{
+	struct thermal_trip_desc *tda = container_of(a, struct thermal_trip_desc,
+						     notify_list_node);
+	struct thermal_trip_desc *tdb = container_of(b, struct thermal_trip_desc,
+						     notify_list_node);
+	int ret = tdb->notify_temp - tda->notify_temp;
+
+	return ascending ? ret : -ret;
+}
+
 void __thermal_zone_device_update(struct thermal_zone_device *tz,
 				  enum thermal_notify_event event)
 {
-	struct thermal_trip *trip;
+	struct thermal_trip_desc *td;
+	LIST_HEAD(way_down_list);
+	LIST_HEAD(way_up_list);
 
 	if (tz->suspended)
 		return;
@@ -472,8 +486,20 @@ void __thermal_zone_device_update(struct thermal_zone_device *tz,
 
 	tz->notify_event = event;
 
-	for_each_trip(tz, trip)
-		handle_thermal_trip(tz, trip);
+	for_each_trip_desc(tz, td)
+		handle_thermal_trip(tz, td, &way_up_list, &way_down_list);
+
+	list_sort(&way_up_list, &way_up_list, thermal_trip_notify_cmp);
+	list_for_each_entry(td, &way_up_list, notify_list_node) {
+		thermal_notify_tz_trip_up(tz, &td->trip);
+		thermal_debug_tz_trip_up(tz, &td->trip);
+	}
+
+	list_sort(NULL, &way_down_list, thermal_trip_notify_cmp);
+	list_for_each_entry(td, &way_down_list, notify_list_node) {
+		thermal_notify_tz_trip_down(tz, &td->trip);
+		thermal_debug_tz_trip_down(tz, &td->trip);
+	}
 
 	monitor_thermal_zone(tz);
 }
@@ -766,7 +792,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
 	if (trip_index < 0 || trip_index >= tz->num_trips)
 		return -EINVAL;
 
-	return thermal_bind_cdev_to_trip(tz, &tz->trips[trip_index], cdev,
+	return thermal_bind_cdev_to_trip(tz, &tz->trips[trip_index].trip, cdev,
 					 upper, lower, weight);
 }
 EXPORT_SYMBOL_GPL(thermal_zone_bind_cooling_device);
@@ -825,7 +851,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
 	if (trip_index < 0 || trip_index >= tz->num_trips)
 		return -EINVAL;
 
-	return thermal_unbind_cdev_from_trip(tz, &tz->trips[trip_index], cdev);
+	return thermal_unbind_cdev_from_trip(tz, &tz->trips[trip_index].trip, cdev);
 }
 EXPORT_SYMBOL_GPL(thermal_zone_unbind_cooling_device);
 
@@ -1221,16 +1247,19 @@ static void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms
 
 int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp)
 {
-	int i, ret = -EINVAL;
+	const struct thermal_trip_desc *td;
+	int ret = -EINVAL;
 
 	if (tz->ops.get_crit_temp)
 		return tz->ops.get_crit_temp(tz, temp);
 
 	mutex_lock(&tz->lock);
 
-	for (i = 0; i < tz->num_trips; i++) {
-		if (tz->trips[i].type == THERMAL_TRIP_CRITICAL) {
-			*temp = tz->trips[i].temperature;
+	for_each_trip_desc(tz, td) {
+		const struct thermal_trip *trip = &td->trip;
+
+		if (trip->type == THERMAL_TRIP_CRITICAL) {
+			*temp = trip->temperature;
 			ret = 0;
 			break;
 		}
@@ -1274,7 +1303,9 @@ thermal_zone_device_register_with_trips(const char *type,
 					const struct thermal_zone_params *tzp,
 					int passive_delay, int polling_delay)
 {
+	const struct thermal_trip *trip = trips;
 	struct thermal_zone_device *tz;
+	struct thermal_trip_desc *td;
 	int id;
 	int result;
 	struct thermal_governor *governor;
@@ -1339,7 +1370,8 @@ thermal_zone_device_register_with_trips(const char *type,
 	tz->device.class = thermal_class;
 	tz->devdata = devdata;
 	tz->num_trips = num_trips;
-	memcpy(tz->trips, trips, num_trips * sizeof(*trips));
+	for_each_trip_desc(tz, td)
+		td->trip = *trip++;
 
 	thermal_set_delay_jiffies(&tz->passive_delay_jiffies, passive_delay);
 	thermal_set_delay_jiffies(&tz->polling_delay_jiffies, polling_delay);

drivers/thermal/thermal_core.h

@@ -15,6 +15,118 @@
 #include "thermal_netlink.h"
 #include "thermal_debugfs.h"
 
+struct thermal_trip_desc {
+	struct thermal_trip trip;
+	struct list_head notify_list_node;
+	int notify_temp;
+	int threshold;
+};
+
+/**
+ * struct thermal_governor - structure that holds thermal governor information
+ * @name:	name of the governor
+ * @bind_to_tz: callback called when binding to a thermal zone.  If it
+ *		returns 0, the governor is bound to the thermal zone,
+ *		otherwise it fails.
+ * @unbind_from_tz:	callback called when a governor is unbound from a
+ *			thermal zone.
+ * @throttle:	callback called for every trip point even if temperature is
+ *		below the trip point temperature
+ * @update_tz:	callback called when thermal zone internals have changed, e.g.
+ *		thermal cooling instance was added/removed
+ * @governor_list:	node in thermal_governor_list (in thermal_core.c)
+ */
+struct thermal_governor {
+	const char *name;
+	int (*bind_to_tz)(struct thermal_zone_device *tz);
+	void (*unbind_from_tz)(struct thermal_zone_device *tz);
+	int (*throttle)(struct thermal_zone_device *tz,
+			const struct thermal_trip *trip);
+	void (*update_tz)(struct thermal_zone_device *tz,
+			  enum thermal_notify_event reason);
+	struct list_head	governor_list;
+};
+
+/**
+ * struct thermal_zone_device - structure for a thermal zone
+ * @id:		unique id number for each thermal zone
+ * @type:	the thermal zone device type
+ * @device:	&struct device for this thermal zone
+ * @removal:	removal completion
+ * @trip_temp_attrs:	attributes for trip points for sysfs: trip temperature
+ * @trip_type_attrs:	attributes for trip points for sysfs: trip type
+ * @trip_hyst_attrs:	attributes for trip points for sysfs: trip hysteresis
+ * @mode:		current mode of this thermal zone
+ * @devdata:	private pointer for device private data
+ * @num_trips:	number of trip points the thermal zone supports
+ * @passive_delay_jiffies: number of jiffies to wait between polls when
+ *			performing passive cooling.
+ * @polling_delay_jiffies: number of jiffies to wait between polls when
+ *			checking whether trip points have been crossed (0 for
+ *			interrupt driven systems)
+ * @temperature:	current temperature.  This is only for core code,
+ *			drivers should use thermal_zone_get_temp() to get the
+ *			current temperature
+ * @last_temperature:	previous temperature read
+ * @emul_temperature:	emulated temperature when using CONFIG_THERMAL_EMULATION
+ * @passive:		1 if you've crossed a passive trip point, 0 otherwise.
+ * @prev_low_trip:	the low current temperature if you've crossed a passive
+			trip point.
+ * @prev_high_trip:	the above current temperature if you've crossed a
+			passive trip point.
+ * @need_update:	if equals 1, thermal_zone_device_update needs to be invoked.
+ * @ops:	operations this &thermal_zone_device supports
+ * @tzp:	thermal zone parameters
+ * @governor:	pointer to the governor for this thermal zone
+ * @governor_data:	private pointer for governor data
+ * @thermal_instances:	list of &struct thermal_instance of this thermal zone
+ * @ida:	&struct ida to generate unique id for this zone's cooling
+ *		devices
+ * @lock:	lock to protect thermal_instances list
+ * @node:	node in thermal_tz_list (in thermal_core.c)
+ * @poll_queue:	delayed work for polling
+ * @notify_event: Last notification event
+ * @suspended: thermal zone suspend indicator
+ * @trips:	array of struct thermal_trip objects
+ */
+struct thermal_zone_device {
+	int id;
+	char type[THERMAL_NAME_LENGTH];
+	struct device device;
+	struct completion removal;
+	struct attribute_group trips_attribute_group;
+	struct thermal_attr *trip_temp_attrs;
+	struct thermal_attr *trip_type_attrs;
+	struct thermal_attr *trip_hyst_attrs;
+	enum thermal_device_mode mode;
+	void *devdata;
+	int num_trips;
+	unsigned long passive_delay_jiffies;
+	unsigned long polling_delay_jiffies;
+	int temperature;
+	int last_temperature;
+	int emul_temperature;
+	int passive;
+	int prev_low_trip;
+	int prev_high_trip;
+	atomic_t need_update;
+	struct thermal_zone_device_ops ops;
+	struct thermal_zone_params *tzp;
+	struct thermal_governor *governor;
+	void *governor_data;
+	struct list_head thermal_instances;
+	struct ida ida;
+	struct mutex lock;
+	struct list_head node;
+	struct delayed_work poll_queue;
+	enum thermal_notify_event notify_event;
+	bool suspended;
+#ifdef CONFIG_THERMAL_DEBUGFS
+	struct thermal_debugfs *debugfs;
+#endif
+	struct thermal_trip_desc trips[] __counted_by(num_trips);
+};
+
 /* Default Thermal Governor */
 #if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE)
 #define DEFAULT_THERMAL_GOVERNOR       "step_wise"
@@ -120,8 +232,11 @@ void thermal_governor_update_tz(struct thermal_zone_device *tz,
 				enum thermal_notify_event reason);
 
 /* Helpers */
-#define for_each_trip(__tz, __trip)	\
-	for (__trip = __tz->trips; __trip - __tz->trips < __tz->num_trips; __trip++)
+#define for_each_trip_desc(__tz, __td)	\
+	for (__td = __tz->trips; __td - __tz->trips < __tz->num_trips; __td++)
+
+#define trip_to_trip_desc(__trip)	\
+	container_of(__trip, struct thermal_trip_desc, trip)
 
 void __thermal_zone_set_trips(struct thermal_zone_device *tz);
 int thermal_zone_trip_id(const struct thermal_zone_device *tz,

drivers/thermal/thermal_debugfs.c

@@ -753,7 +753,7 @@ static int tze_seq_show(struct seq_file *s, void *v)
 {
 	struct thermal_debugfs *thermal_dbg = s->private;
 	struct thermal_zone_device *tz = thermal_dbg->tz_dbg.tz;
-	struct thermal_trip *trip;
+	struct thermal_trip_desc *td;
 	struct tz_episode *tze;
 	const char *type;
 	int trip_id;
@@ -766,7 +766,9 @@ static int tze_seq_show(struct seq_file *s, void *v)
 
 	seq_printf(s, "| trip |     type | temp(°mC) | hyst(°mC) |  duration  |  avg(°mC) |  min(°mC) |  max(°mC) |\n");
 
-	for_each_trip(tz, trip) {
+	for_each_trip_desc(tz, td) {
+		const struct thermal_trip *trip = &td->trip;
+
 		/*
 		 * There is no possible mitigation happening at the
 		 * critical trip point, so the stats will be always

drivers/thermal/thermal_helpers.c

@@ -50,7 +50,7 @@ get_thermal_instance(struct thermal_zone_device *tz,
 	mutex_lock(&tz->lock);
 	mutex_lock(&cdev->lock);
 
-	trip = &tz->trips[trip_index];
+	trip = &tz->trips[trip_index].trip;
 
 	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
 		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
@@ -82,7 +82,7 @@ EXPORT_SYMBOL(get_thermal_instance);
  */
 int __thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
 {
-	const struct thermal_trip *trip;
+	const struct thermal_trip_desc *td;
 	int crit_temp = INT_MAX;
 	int ret = -EINVAL;
 
@@ -91,7 +91,9 @@ int __thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
 	ret = tz->ops.get_temp(tz, temp);
 
 	if (IS_ENABLED(CONFIG_THERMAL_EMULATION) && tz->emul_temperature) {
-		for_each_trip(tz, trip) {
+		for_each_trip_desc(tz, td) {
+			const struct thermal_trip *trip = &td->trip;
+
 			if (trip->type == THERMAL_TRIP_CRITICAL) {
 				crit_temp = trip->temperature;
 				break;

drivers/thermal/thermal_netlink.c

@@ -7,17 +7,13 @@
  * Generic netlink for thermal management framework
  */
 #include <linux/module.h>
+#include <linux/notifier.h>
 #include <linux/kernel.h>
 #include <net/genetlink.h>
 #include <uapi/linux/thermal.h>
 
 #include "thermal_core.h"
 
-enum thermal_genl_multicast_groups {
-	THERMAL_GENL_SAMPLING_GROUP = 0,
-	THERMAL_GENL_EVENT_GROUP = 1,
-};
-
 static const struct genl_multicast_group thermal_genl_mcgrps[] = {
 	[THERMAL_GENL_SAMPLING_GROUP] = { .name = THERMAL_GENL_SAMPLING_GROUP_NAME, },
 	[THERMAL_GENL_EVENT_GROUP]  = { .name = THERMAL_GENL_EVENT_GROUP_NAME,  },
@@ -74,11 +70,12 @@ struct param {
 
 typedef int (*cb_t)(struct param *);
 
-static struct genl_family thermal_gnl_family;
+static struct genl_family thermal_genl_family;
+static BLOCKING_NOTIFIER_HEAD(thermal_genl_chain);
 
 static int thermal_group_has_listeners(enum thermal_genl_multicast_groups group)
 {
-	return genl_has_listeners(&thermal_gnl_family, &init_net, group);
+	return genl_has_listeners(&thermal_genl_family, &init_net, group);
 }
 
 /************************** Sampling encoding *******************************/
@@ -95,7 +92,7 @@ int thermal_genl_sampling_temp(int id, int temp)
 	if (!skb)
 		return -ENOMEM;
 
-	hdr = genlmsg_put(skb, 0, 0, &thermal_gnl_family, 0,
+	hdr = genlmsg_put(skb, 0, 0, &thermal_genl_family, 0,
 			  THERMAL_GENL_SAMPLING_TEMP);
 	if (!hdr)
 		goto out_free;
@@ -108,7 +105,7 @@ int thermal_genl_sampling_temp(int id, int temp)
 
 	genlmsg_end(skb, hdr);
 
-	genlmsg_multicast(&thermal_gnl_family, skb, 0, THERMAL_GENL_SAMPLING_GROUP, GFP_KERNEL);
+	genlmsg_multicast(&thermal_genl_family, skb, 0, THERMAL_GENL_SAMPLING_GROUP, GFP_KERNEL);
 
 	return 0;
 out_cancel:
@@ -282,7 +279,7 @@ static int thermal_genl_send_event(enum thermal_genl_event event,
 		return -ENOMEM;
 	p->msg = msg;
 
-	hdr = genlmsg_put(msg, 0, 0, &thermal_gnl_family, 0, event);
+	hdr = genlmsg_put(msg, 0, 0, &thermal_genl_family, 0, event);
 	if (!hdr)
 		goto out_free_msg;
 
@@ -292,7 +289,7 @@ static int thermal_genl_send_event(enum thermal_genl_event event,
 
 	genlmsg_end(msg, hdr);
 
-	genlmsg_multicast(&thermal_gnl_family, msg, 0, THERMAL_GENL_EVENT_GROUP, GFP_KERNEL);
+	genlmsg_multicast(&thermal_genl_family, msg, 0, THERMAL_GENL_EVENT_GROUP, GFP_KERNEL);
 
 	return 0;
 
@@ -445,7 +442,7 @@ static int thermal_genl_cmd_tz_get_id(struct param *p)
 static int thermal_genl_cmd_tz_get_trip(struct param *p)
 {
 	struct sk_buff *msg = p->msg;
-	const struct thermal_trip *trip;
+	const struct thermal_trip_desc *td;
 	struct thermal_zone_device *tz;
 	struct nlattr *start_trip;
 	int id;
@@ -465,7 +462,9 @@ static int thermal_genl_cmd_tz_get_trip(struct param *p)
 
 	mutex_lock(&tz->lock);
 
-	for_each_trip(tz, trip) {
+	for_each_trip_desc(tz, td) {
+		const struct thermal_trip *trip = &td->trip;
+
 		if (nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TRIP_ID,
 				thermal_zone_trip_id(tz, trip)) ||
 		    nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TRIP_TYPE, trip->type) ||
@@ -593,7 +592,7 @@ static int thermal_genl_cmd_dumpit(struct sk_buff *skb,
 	int ret;
 	void *hdr;
 
-	hdr = genlmsg_put(skb, 0, 0, &thermal_gnl_family, 0, cmd);
+	hdr = genlmsg_put(skb, 0, 0, &thermal_genl_family, 0, cmd);
 	if (!hdr)
 		return -EMSGSIZE;
 
@@ -625,7 +624,7 @@ static int thermal_genl_cmd_doit(struct sk_buff *skb,
 		return -ENOMEM;
 	p.msg = msg;
 
-	hdr = genlmsg_put_reply(msg, info, &thermal_gnl_family, 0, cmd);
+	hdr = genlmsg_put_reply(msg, info, &thermal_genl_family, 0, cmd);
 	if (!hdr)
 		goto out_free_msg;
 
@@ -645,6 +644,27 @@ static int thermal_genl_cmd_doit(struct sk_buff *skb,
 	return ret;
 }
 
+static int thermal_genl_bind(int mcgrp)
+{
+	struct thermal_genl_notify n = { .mcgrp = mcgrp };
+
+	if (WARN_ON_ONCE(mcgrp > THERMAL_GENL_MAX_GROUP))
+		return -EINVAL;
+
+	blocking_notifier_call_chain(&thermal_genl_chain, THERMAL_NOTIFY_BIND, &n);
+	return 0;
+}
+
+static void thermal_genl_unbind(int mcgrp)
+{
+	struct thermal_genl_notify n = { .mcgrp = mcgrp };
+
+	if (WARN_ON_ONCE(mcgrp > THERMAL_GENL_MAX_GROUP))
+		return;
+
+	blocking_notifier_call_chain(&thermal_genl_chain, THERMAL_NOTIFY_UNBIND, &n);
+}
+
 static const struct genl_small_ops thermal_genl_ops[] = {
 	{
 		.cmd = THERMAL_GENL_CMD_TZ_GET_ID,
@@ -673,12 +693,14 @@ static const struct genl_small_ops thermal_genl_ops[] = {
 	},
 };
 
-static struct genl_family thermal_gnl_family __ro_after_init = {
+static struct genl_family thermal_genl_family __ro_after_init = {
 	.hdrsize	= 0,
 	.name		= THERMAL_GENL_FAMILY_NAME,
 	.version	= THERMAL_GENL_VERSION,
 	.maxattr	= THERMAL_GENL_ATTR_MAX,
 	.policy		= thermal_genl_policy,
+	.bind		= thermal_genl_bind,
+	.unbind		= thermal_genl_unbind,
 	.small_ops	= thermal_genl_ops,
 	.n_small_ops	= ARRAY_SIZE(thermal_genl_ops),
 	.resv_start_op	= THERMAL_GENL_CMD_CDEV_GET + 1,
@@ -686,12 +708,22 @@ static struct genl_family thermal_gnl_family __ro_after_init = {
 	.n_mcgrps	= ARRAY_SIZE(thermal_genl_mcgrps),
 };
 
+int thermal_genl_register_notifier(struct notifier_block *nb)
+{
+	return blocking_notifier_chain_register(&thermal_genl_chain, nb);
+}
+
+int thermal_genl_unregister_notifier(struct notifier_block *nb)
+{
+	return blocking_notifier_chain_unregister(&thermal_genl_chain, nb);
+}
+
 int __init thermal_netlink_init(void)
 {
-	return genl_register_family(&thermal_gnl_family);
+	return genl_register_family(&thermal_genl_family);
 }
 
 void __init thermal_netlink_exit(void)
 {
-	genl_unregister_family(&thermal_gnl_family);
+	genl_unregister_family(&thermal_genl_family);
 }

drivers/thermal/thermal_netlink.h

@@ -10,6 +10,19 @@ struct thermal_genl_cpu_caps {
 	int efficiency;
 };
 
+enum thermal_genl_multicast_groups {
+	THERMAL_GENL_SAMPLING_GROUP = 0,
+	THERMAL_GENL_EVENT_GROUP = 1,
+	THERMAL_GENL_MAX_GROUP = THERMAL_GENL_EVENT_GROUP,
+};
+
+#define THERMAL_NOTIFY_BIND	0
+#define THERMAL_NOTIFY_UNBIND	1
+
+struct thermal_genl_notify {
+	int mcgrp;
+};
+
 struct thermal_zone_device;
 struct thermal_trip;
 struct thermal_cooling_device;
@@ -18,6 +31,9 @@ struct thermal_cooling_device;
 #ifdef CONFIG_THERMAL_NETLINK
 int __init thermal_netlink_init(void);
 void __init thermal_netlink_exit(void);
+int thermal_genl_register_notifier(struct notifier_block *nb);
+int thermal_genl_unregister_notifier(struct notifier_block *nb);
+
 int thermal_notify_tz_create(const struct thermal_zone_device *tz);
 int thermal_notify_tz_delete(const struct thermal_zone_device *tz);
 int thermal_notify_tz_enable(const struct thermal_zone_device *tz);
@@ -48,6 +64,16 @@ static inline int thermal_notify_tz_create(const struct thermal_zone_device *tz)
 	return 0;
 }
 
+static inline int thermal_genl_register_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int thermal_genl_unregister_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+
 static inline int thermal_notify_tz_delete(const struct thermal_zone_device *tz)
 {
 	return 0;

drivers/thermal/thermal_sysfs.c

@@ -88,7 +88,7 @@ trip_point_type_show(struct device *dev, struct device_attribute *attr,
 	if (sscanf(attr->attr.name, "trip_point_%d_type", &trip_id) != 1)
 		return -EINVAL;
 
-	switch (tz->trips[trip_id].type) {
+	switch (tz->trips[trip_id].trip.type) {
 	case THERMAL_TRIP_CRITICAL:
 		return sprintf(buf, "critical\n");
 	case THERMAL_TRIP_HOT:
@@ -120,7 +120,7 @@ trip_point_temp_store(struct device *dev, struct device_attribute *attr,
 
 	mutex_lock(&tz->lock);
 
-	trip = &tz->trips[trip_id];
+	trip = &tz->trips[trip_id].trip;
 
 	if (temp != trip->temperature) {
 		if (tz->ops.set_trip_temp) {
@@ -150,7 +150,7 @@ trip_point_temp_show(struct device *dev, struct device_attribute *attr,
 	if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip_id) != 1)
 		return -EINVAL;
 
-	return sprintf(buf, "%d\n", tz->trips[trip_id].temperature);
+	return sprintf(buf, "%d\n", tz->trips[trip_id].trip.temperature);
 }
 
 static ssize_t
@@ -171,7 +171,7 @@ trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
 
 	mutex_lock(&tz->lock);
 
-	trip = &tz->trips[trip_id];
+	trip = &tz->trips[trip_id].trip;
 
 	if (hyst != trip->hysteresis) {
 		trip->hysteresis = hyst;
@@ -194,7 +194,7 @@ trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
 	if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip_id) != 1)
 		return -EINVAL;
 
-	return sprintf(buf, "%d\n", tz->trips[trip_id].hysteresis);
+	return sprintf(buf, "%d\n", tz->trips[trip_id].trip.hysteresis);
 }
 
 static ssize_t
@@ -393,7 +393,7 @@ static const struct attribute_group *thermal_zone_attribute_groups[] = {
  */
 static int create_trip_attrs(struct thermal_zone_device *tz)
 {
-	const struct thermal_trip *trip;
+	const struct thermal_trip_desc *td;
 	struct attribute **attrs;
 
 	/* This function works only for zones with at least one trip */
@@ -429,8 +429,8 @@ static int create_trip_attrs(struct thermal_zone_device *tz)
 		return -ENOMEM;
 	}
 
-	for_each_trip(tz, trip) {
-		int indx = thermal_zone_trip_id(tz, trip);
+	for_each_trip_desc(tz, td) {
+		int indx = thermal_zone_trip_id(tz, &td->trip);
 
 		/* create trip type attribute */
 		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
@@ -452,7 +452,7 @@ static int create_trip_attrs(struct thermal_zone_device *tz)
 						tz->trip_temp_attrs[indx].name;
 		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
 		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
-		if (trip->flags & THERMAL_TRIP_FLAG_RW_TEMP) {
+		if (td->trip.flags & THERMAL_TRIP_FLAG_RW_TEMP) {
 			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
 			tz->trip_temp_attrs[indx].attr.store =
 							trip_point_temp_store;
@@ -467,7 +467,7 @@ static int create_trip_attrs(struct thermal_zone_device *tz)
 					tz->trip_hyst_attrs[indx].name;
 		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
 		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
-		if (trip->flags & THERMAL_TRIP_FLAG_RW_HYST) {
+		if (td->trip.flags & THERMAL_TRIP_FLAG_RW_HYST) {
 			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
 			tz->trip_hyst_attrs[indx].attr.store =
 					trip_point_hyst_store;

drivers/thermal/thermal_trace.h

@@ -9,6 +9,8 @@
 #include <linux/thermal.h>
 #include <linux/tracepoint.h>
 
+#include "thermal_core.h"
+
 TRACE_DEFINE_ENUM(THERMAL_TRIP_CRITICAL);
 TRACE_DEFINE_ENUM(THERMAL_TRIP_HOT);
 TRACE_DEFINE_ENUM(THERMAL_TRIP_PASSIVE);

drivers/thermal/thermal_trace_ipa.h

@@ -7,6 +7,8 @@
 
 #include <linux/tracepoint.h>
 
+#include "thermal_core.h"
+
 TRACE_EVENT(thermal_power_allocator,
 	TP_PROTO(struct thermal_zone_device *tz, u32 total_req_power,
 		 u32 total_granted_power, int num_actors, u32 power_range,

drivers/thermal/thermal_trip.c

@@ -13,11 +13,11 @@ int for_each_thermal_trip(struct thermal_zone_device *tz,
 			  int (*cb)(struct thermal_trip *, void *),
 			  void *data)
 {
-	struct thermal_trip *trip;
+	struct thermal_trip_desc *td;
 	int ret;
 
-	for_each_trip(tz, trip) {
-		ret = cb(trip, data);
+	for_each_trip_desc(tz, td) {
+		ret = cb(&td->trip, data);
 		if (ret)
 			return ret;
 	}
@@ -63,7 +63,7 @@ EXPORT_SYMBOL_GPL(thermal_zone_get_num_trips);
  */
 void __thermal_zone_set_trips(struct thermal_zone_device *tz)
 {
-	const struct thermal_trip *trip;
+	const struct thermal_trip_desc *td;
 	int low = -INT_MAX, high = INT_MAX;
 	int ret;
 
@@ -72,7 +72,8 @@ void __thermal_zone_set_trips(struct thermal_zone_device *tz)
 	if (!tz->ops.set_trips)
 		return;
 
-	for_each_trip(tz, trip) {
+	for_each_trip_desc(tz, td) {
+		const struct thermal_trip *trip = &td->trip;
 		int trip_low;
 
 		trip_low = trip->temperature - trip->hysteresis;
@@ -110,7 +111,7 @@ int __thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
 	if (!tz || trip_id < 0 || trip_id >= tz->num_trips || !trip)
 		return -EINVAL;
 
-	*trip = tz->trips[trip_id];
+	*trip = tz->trips[trip_id].trip;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(__thermal_zone_get_trip);
@@ -135,7 +136,7 @@ int thermal_zone_trip_id(const struct thermal_zone_device *tz,
 	 * Assume the trip to be located within the bounds of the thermal
 	 * zone's trips[] table.
 	 */
-	return trip - tz->trips;
+	return trip_to_trip_desc(trip) - tz->trips;
 }
 void thermal_zone_trip_updated(struct thermal_zone_device *tz,
 			       const struct thermal_trip *trip)

include/dt-bindings/thermal/mediatek,lvts-thermal.h

@@ -16,6 +16,32 @@
 #define MT7988_ETHWARP_0	6
 #define MT7988_ETHWARP_1	7
 
+#define MT8186_LITTLE_CPU0	0
+#define MT8186_LITTLE_CPU1	1
+#define MT8186_LITTLE_CPU2	2
+#define MT8186_CAM		3
+#define MT8186_BIG_CPU0	4
+#define MT8186_BIG_CPU1	5
+#define MT8186_NNA		6
+#define MT8186_ADSP		7
+#define MT8186_MFG		8
+
+#define MT8188_MCU_LITTLE_CPU0	0
+#define MT8188_MCU_LITTLE_CPU1	1
+#define MT8188_MCU_LITTLE_CPU2	2
+#define MT8188_MCU_LITTLE_CPU3	3
+#define MT8188_MCU_BIG_CPU0	4
+#define MT8188_MCU_BIG_CPU1	5
+
+#define MT8188_AP_APU		0
+#define MT8188_AP_GPU1		1
+#define MT8188_AP_GPU2		2
+#define MT8188_AP_SOC1		3
+#define MT8188_AP_SOC2		4
+#define MT8188_AP_SOC3		5
+#define MT8188_AP_CAM1		6
+#define MT8188_AP_CAM2		7
+
 #define MT8195_MCU_BIG_CPU0     0
 #define MT8195_MCU_BIG_CPU1     1
 #define MT8195_MCU_BIG_CPU2     2

include/linux/thermal.h

@@ -61,7 +61,6 @@ enum thermal_notify_event {
  * struct thermal_trip - representation of a point in temperature domain
  * @temperature: temperature value in miliCelsius
  * @hysteresis: relative hysteresis in miliCelsius
- * @threshold: trip crossing notification threshold miliCelsius
  * @type: trip point type
  * @priv: pointer to driver data associated with this trip
  * @flags: flags representing binary properties of the trip
@@ -69,7 +68,6 @@ enum thermal_notify_event {
 struct thermal_trip {
 	int temperature;
 	int hysteresis;
-	int threshold;
 	enum thermal_trip_type type;
 	u8 flags;
 	void *priv;
@@ -81,6 +79,8 @@ struct thermal_trip {
 #define THERMAL_TRIP_FLAG_RW	(THERMAL_TRIP_FLAG_RW_TEMP | \
 				 THERMAL_TRIP_FLAG_RW_HYST)
 
+struct thermal_zone_device;
+
 struct thermal_zone_device_ops {
 	int (*bind) (struct thermal_zone_device *,
 		     struct thermal_cooling_device *);
@@ -126,111 +126,6 @@ struct thermal_cooling_device {
 #endif
 };
 
-/**
- * struct thermal_zone_device - structure for a thermal zone
- * @id:		unique id number for each thermal zone
- * @type:	the thermal zone device type
- * @device:	&struct device for this thermal zone
- * @removal:	removal completion
- * @trip_temp_attrs:	attributes for trip points for sysfs: trip temperature
- * @trip_type_attrs:	attributes for trip points for sysfs: trip type
- * @trip_hyst_attrs:	attributes for trip points for sysfs: trip hysteresis
- * @mode:		current mode of this thermal zone
- * @devdata:	private pointer for device private data
- * @num_trips:	number of trip points the thermal zone supports
- * @passive_delay_jiffies: number of jiffies to wait between polls when
- *			performing passive cooling.
- * @polling_delay_jiffies: number of jiffies to wait between polls when
- *			checking whether trip points have been crossed (0 for
- *			interrupt driven systems)
- * @temperature:	current temperature.  This is only for core code,
- *			drivers should use thermal_zone_get_temp() to get the
- *			current temperature
- * @last_temperature:	previous temperature read
- * @emul_temperature:	emulated temperature when using CONFIG_THERMAL_EMULATION
- * @passive:		1 if you've crossed a passive trip point, 0 otherwise.
- * @prev_low_trip:	the low current temperature if you've crossed a passive
-			trip point.
- * @prev_high_trip:	the above current temperature if you've crossed a
-			passive trip point.
- * @need_update:	if equals 1, thermal_zone_device_update needs to be invoked.
- * @ops:	operations this &thermal_zone_device supports
- * @tzp:	thermal zone parameters
- * @governor:	pointer to the governor for this thermal zone
- * @governor_data:	private pointer for governor data
- * @thermal_instances:	list of &struct thermal_instance of this thermal zone
- * @ida:	&struct ida to generate unique id for this zone's cooling
- *		devices
- * @lock:	lock to protect thermal_instances list
- * @node:	node in thermal_tz_list (in thermal_core.c)
- * @poll_queue:	delayed work for polling
- * @notify_event: Last notification event
- * @suspended: thermal zone suspend indicator
- * @trips:	array of struct thermal_trip objects
- */
-struct thermal_zone_device {
-	int id;
-	char type[THERMAL_NAME_LENGTH];
-	struct device device;
-	struct completion removal;
-	struct attribute_group trips_attribute_group;
-	struct thermal_attr *trip_temp_attrs;
-	struct thermal_attr *trip_type_attrs;
-	struct thermal_attr *trip_hyst_attrs;
-	enum thermal_device_mode mode;
-	void *devdata;
-	int num_trips;
-	unsigned long passive_delay_jiffies;
-	unsigned long polling_delay_jiffies;
-	int temperature;
-	int last_temperature;
-	int emul_temperature;
-	int passive;
-	int prev_low_trip;
-	int prev_high_trip;
-	atomic_t need_update;
-	struct thermal_zone_device_ops ops;
-	struct thermal_zone_params *tzp;
-	struct thermal_governor *governor;
-	void *governor_data;
-	struct list_head thermal_instances;
-	struct ida ida;
-	struct mutex lock;
-	struct list_head node;
-	struct delayed_work poll_queue;
-	enum thermal_notify_event notify_event;
-	bool suspended;
-#ifdef CONFIG_THERMAL_DEBUGFS
-	struct thermal_debugfs *debugfs;
-#endif
-	struct thermal_trip trips[] __counted_by(num_trips);
-};
-
-/**
- * struct thermal_governor - structure that holds thermal governor information
- * @name:	name of the governor
- * @bind_to_tz: callback called when binding to a thermal zone.  If it
- *		returns 0, the governor is bound to the thermal zone,
- *		otherwise it fails.
- * @unbind_from_tz:	callback called when a governor is unbound from a
- *			thermal zone.
- * @throttle:	callback called for every trip point even if temperature is
- *		below the trip point temperature
- * @update_tz:	callback called when thermal zone internals have changed, e.g.
- *		thermal cooling instance was added/removed
- * @governor_list:	node in thermal_governor_list (in thermal_core.c)
- */
-struct thermal_governor {
-	const char *name;
-	int (*bind_to_tz)(struct thermal_zone_device *tz);
-	void (*unbind_from_tz)(struct thermal_zone_device *tz);
-	int (*throttle)(struct thermal_zone_device *tz,
-			const struct thermal_trip *trip);
-	void (*update_tz)(struct thermal_zone_device *tz,
-			  enum thermal_notify_event reason);
-	struct list_head	governor_list;
-};
-
 /* Structure to define Thermal Zone parameters */
 struct thermal_zone_params {
 	const char *governor_name;