Merge tag 'thermal-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more thermal control updates from Rafael Wysocki:
 "These are mostly cleanups on top of the previously merged thermal
  control changes plus some driver fixes and the removal of the Intel
  Menlow thermal driver.

  Specifics:

   - Add compatible DT bindings for imx6sll and imx6ul to fix a dtbs
     check warning (Stefan Wahren)

   - Update the example in the DT bindings to reflect changes with the
     ADC node name for QCom TM and TM5 (Marijn Suijten)

   - Fix comments for the cpuidle_cooling_register() function to match
     the function prototype (Chenggang Wang)

   - Fix inconsistent temperature read and some Mediatek variant board
     reboot by reverting a change and handling the temperature
     differently (AngeloGioacchino Del Regno)

   - Fix a memory leak in the initialization error path for the Mediatek
     driver (Kang Chen)

   - Use of_address_to_resource() in the Mediatek driver (Rob Herring)

   - Fix unit address in the QCom tsens driver DT bindings (Krzysztof
     Kozlowski)

   - Clean up the step-wise thermal governor (Zhang Rui)

   - Introduce thermal_zone_device() for accessing the device field of
     struct thermal_zone_device and two drivers use it (Daniel Lezcano)

   - Clean up the ACPI thermal driver a bit (Daniel Lezcano)

   - Delete the thermal driver for Intel Menlow platforms that is not
     expected to have any users (Rafael Wysocki)"

* tag 'thermal-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: menlow: Get rid of this driver
  ACPI: thermal: Move to dedicated function sysfs extra attr creation
  ACPI: thermal: Use thermal_zone_device()
  thermal: intel: pch_thermal: Use thermal driver device to write a trace
  thermal: core: Encapsulate tz->device field
  thermal: gov_step_wise: Adjust code logic to match comment
  thermal: gov_step_wise: Delete obsolete comment
  dt-bindings: thermal: qcom-tsens: Correct unit address
  thermal/drivers/mediatek: Use of_address_to_resource()
  thermal/drivers/mediatek: Change clk_prepare_enable to devm_clk_get_enabled in mtk_thermal_probe
  thermal/drivers/mediatek: Use devm_of_iomap to avoid resource leak in mtk_thermal_probe
  thermal/drivers/mediatek: Add temperature constraints to validate read
  Revert "thermal/drivers/mediatek: Add delay after thermal banks initialization"
  thermal/drivers/cpuidle_cooling: Delete unmatched comments
  dt-bindings: thermal: Use generic ADC node name in examples
  dt-bindings: imx-thermal: Add imx6sll and imx6ul compatible

Documentation/devicetree/bindings/thermal/imx-thermal.yaml

@@ -12,10 +12,16 @@ maintainers:
 
 properties:
   compatible:
-    enum:
+    oneOf:
+      - enum:
           - fsl,imx6q-tempmon
           - fsl,imx6sx-tempmon
           - fsl,imx7d-tempmon
+      - items:
+          - enum:
+              - fsl,imx6sll-tempmon
+              - fsl,imx6ul-tempmon
+          - const: fsl,imx6sx-tempmon
 
   interrupts:
     description: |

Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm-hc.yaml

@@ -124,8 +124,8 @@ examples:
             #size-cells = <0>;
             #io-channel-cells = <1>;
 
-            /* Other propreties are omitted */
-            adc-chan@4c {
+            /* Other properties are omitted */
+            channel@4c {
                 reg = <ADC5_XO_THERM_100K_PU>;
             };
         };

Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml

@@ -178,10 +178,11 @@ examples:
             #io-channel-cells = <1>;
 
             /* Other properties are omitted */
-            conn-therm@4f {
+            channel@4f {
                 reg = <ADC5_AMUX_THM3_100K_PU>;
                 qcom,ratiometric;
                 qcom,hw-settle-time = <200>;
+                label = "conn_therm";
             };
         };
 
@@ -217,16 +218,18 @@ examples:
             #io-channel-cells = <1>;
 
             /* Other properties are omitted */
-            xo-therm@44 {
+            channel@44 {
                 reg = <PMK8350_ADC7_AMUX_THM1_100K_PU>;
                 qcom,ratiometric;
                 qcom,hw-settle-time = <200>;
+                label = "xo_therm";
             };
 
-            conn-therm@147 {
+            channel@147 {
                 reg = <PM8350_ADC7_AMUX_THM4_100K_PU(1)>;
                 qcom,ratiometric;
                 qcom,hw-settle-time = <200>;
+                label = "conn_therm";
             };
         };
 

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

@@ -326,7 +326,7 @@ examples:
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     // Example 1 (new calbiration data: for pre v1 IP):
-    thermal-sensor@900000 {
+    thermal-sensor@4a9000 {
         compatible = "qcom,msm8916-tsens", "qcom,tsens-v0_1";
         reg = <0x4a9000 0x1000>, /* TM */
               <0x4a8000 0x1000>; /* SROT */
@@ -356,7 +356,7 @@ examples:
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     // Example 1 (legacy: for pre v1 IP):
-    tsens1: thermal-sensor@900000 {
+    tsens1: thermal-sensor@4a9000 {
            compatible = "qcom,msm8916-tsens", "qcom,tsens-v0_1";
            reg = <0x4a9000 0x1000>, /* TM */
                  <0x4a8000 0x1000>; /* SROT */

drivers/acpi/thermal.c

@@ -786,6 +786,32 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
 	.critical = acpi_thermal_zone_device_critical,
 };
 
+static int acpi_thermal_zone_sysfs_add(struct acpi_thermal *tz)
+{
+	struct device *tzdev = thermal_zone_device(tz->thermal_zone);
+	int ret;
+
+	ret = sysfs_create_link(&tz->device->dev.kobj,
+				&tzdev->kobj, "thermal_zone");
+	if (ret)
+		return ret;
+
+	ret = sysfs_create_link(&tzdev->kobj,
+				   &tz->device->dev.kobj, "device");
+	if (ret)
+		sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");
+
+	return ret;
+}
+
+static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz)
+{
+	struct device *tzdev = thermal_zone_device(tz->thermal_zone);
+
+	sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");
+	sysfs_remove_link(&tzdev->kobj, "device");
+}
+
 static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 {
 	int trips = 0;
@@ -819,21 +845,15 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 	if (IS_ERR(tz->thermal_zone))
 		return -ENODEV;
 
-	result = sysfs_create_link(&tz->device->dev.kobj,
-				   &tz->thermal_zone->device.kobj, "thermal_zone");
+	result = acpi_thermal_zone_sysfs_add(tz);
 	if (result)
 		goto unregister_tzd;
 
-	result = sysfs_create_link(&tz->thermal_zone->device.kobj,
-				   &tz->device->dev.kobj, "device");
-	if (result)
-		goto remove_tz_link;
-
 	status =  acpi_bus_attach_private_data(tz->device->handle,
 					       tz->thermal_zone);
 	if (ACPI_FAILURE(status)) {
 		result = -ENODEV;
-		goto remove_dev_link;
+		goto remove_links;
 	}
 
 	result = thermal_zone_device_enable(tz->thermal_zone);
@@ -847,10 +867,8 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 
 acpi_bus_detach:
 	acpi_bus_detach_private_data(tz->device->handle);
-remove_dev_link:
-	sysfs_remove_link(&tz->thermal_zone->device.kobj, "device");
-remove_tz_link:
-	sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");
+remove_links:
+	acpi_thermal_zone_sysfs_remove(tz);
 unregister_tzd:
 	thermal_zone_device_unregister(tz->thermal_zone);
 
@@ -859,8 +877,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 
 static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)
 {
-	sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");
-	sysfs_remove_link(&tz->thermal_zone->device.kobj, "device");
+	acpi_thermal_zone_sysfs_remove(tz);
 	thermal_zone_device_unregister(tz->thermal_zone);
 	tz->thermal_zone = NULL;
 	acpi_bus_detach_private_data(tz->device->handle);

drivers/thermal/cpuidle_cooling.c

@@ -237,9 +237,6 @@ static int __cpuidle_cooling_register(struct device_node *np,
  *
  * This function is in charge of creating a cooling device per cpuidle
  * driver and register it to the thermal framework.
- *
- * Return: zero on success, or negative value corresponding to the
- * error detected in the underlying subsystems.
  */
 void cpuidle_cooling_register(struct cpuidle_driver *drv)
 {

drivers/thermal/gov_step_wise.c

@@ -21,19 +21,11 @@
  *    a. if the trend is THERMAL_TREND_RAISING, use higher cooling
  *       state for this trip point
  *    b. if the trend is THERMAL_TREND_DROPPING, do nothing
- *    c. if the trend is THERMAL_TREND_RAISE_FULL, use upper limit
- *       for this trip point
- *    d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit
- *       for this trip point
  * If the temperature is lower than a trip point,
  *    a. if the trend is THERMAL_TREND_RAISING, do nothing
  *    b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
  *       state for this trip point, if the cooling state already
  *       equals lower limit, deactivate the thermal instance
- *    c. if the trend is THERMAL_TREND_RAISE_FULL, do nothing
- *    d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit,
- *       if the cooling state already equals lower limit,
- *       deactivate the thermal instance
  */
 static unsigned long get_target_state(struct thermal_instance *instance,
 				enum thermal_trend trend, bool throttle)
@@ -61,25 +53,17 @@ static unsigned long get_target_state(struct thermal_instance *instance,
 		return next_target;
 	}
 
-	switch (trend) {
-	case THERMAL_TREND_RAISING:
 	if (throttle) {
+		if (trend == THERMAL_TREND_RAISING)
 			next_target = clamp((cur_state + 1), instance->lower, instance->upper);
-		}
-		break;
-	case THERMAL_TREND_DROPPING:
-		if (cur_state <= instance->lower) {
-			if (!throttle)
-				next_target = THERMAL_NO_TARGET;
 	} else {
-			if (!throttle) {
+		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);
 		}
 	}
-		break;
-	default:
-		break;
-	}
 
 	return next_target;
 }

drivers/thermal/intel/Kconfig

@@ -103,15 +103,6 @@ config INTEL_TCC_COOLING
 	  on how fast the setting takes effect, and how much the CPU frequency
 	  is reduced.
 
-config INTEL_MENLOW
-	tristate "Thermal Management driver for Intel menlow platform"
-	depends on ACPI_THERMAL
-	help
-	  ACPI thermal management enhancement driver on
-	  Intel Menlow platform.
-
-	  If unsure, say N.
-
 config INTEL_HFI_THERMAL
 	bool "Intel Hardware Feedback Interface"
 	depends on NET

drivers/thermal/intel/Makefile

@@ -13,5 +13,4 @@ obj-$(CONFIG_INTEL_BXT_PMIC_THERMAL) += intel_bxt_pmic_thermal.o
 obj-$(CONFIG_INTEL_PCH_THERMAL)	+= intel_pch_thermal.o
 obj-$(CONFIG_INTEL_TCC_COOLING)	+= intel_tcc_cooling.o
 obj-$(CONFIG_X86_THERMAL_VECTOR) += therm_throt.o
-obj-$(CONFIG_INTEL_MENLOW)	+= intel_menlow.o
 obj-$(CONFIG_INTEL_HFI_THERMAL) += intel_hfi.o

drivers/thermal/intel/intel_pch_thermal.c

@@ -127,7 +127,8 @@ static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp)
 
 static void pch_critical(struct thermal_zone_device *tzd)
 {
-	dev_dbg(&tzd->device, "%s: critical temperature reached\n", tzd->type);
+	dev_dbg(thermal_zone_device(tzd), "%s: critical temperature reached\n",
+		thermal_zone_device_type(tzd));
 }
 
 static struct thermal_zone_device_ops tzd_ops = {

drivers/thermal/mediatek/auxadc_thermal.c

@@ -116,6 +116,10 @@
 /* The calibration coefficient of sensor  */
 #define MT8173_CALIBRATION	165
 
+/* Valid temperatures range */
+#define MT8173_TEMP_MIN		-20000
+#define MT8173_TEMP_MAX		150000
+
 /*
  * Layout of the fuses providing the calibration data
  * These macros could be used for MT8183, MT8173, MT2701, and MT2712.
@@ -689,6 +693,11 @@ static const struct mtk_thermal_data mt7986_thermal_data = {
 	.version = MTK_THERMAL_V3,
 };
 
+static bool mtk_thermal_temp_is_valid(int temp)
+{
+	return (temp >= MT8173_TEMP_MIN) && (temp <= MT8173_TEMP_MAX);
+}
+
 /**
  * raw_to_mcelsius_v1 - convert a raw ADC value to mcelsius
  * @mt:	The thermal controller
@@ -815,6 +824,17 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
 		temp = mt->raw_to_mcelsius(
 			mt, conf->bank_data[bank->id].sensors[i], raw);
 
+		/*
+		 * Depending on the filt/sen intervals and ADC polling time,
+		 * we may need up to 60 milliseconds after initialization: this
+		 * will result in the first reading containing an out of range
+		 * temperature value.
+		 * Validate the reading to both address the aforementioned issue
+		 * and to eventually avoid bogus readings during runtime in the
+		 * event that the AUXADC gets unstable due to high EMI, etc.
+		 */
+		if (!mtk_thermal_temp_is_valid(temp))
+			temp = THERMAL_TEMP_INVALID;
 
 		if (temp > max)
 			max = temp;
@@ -959,14 +979,12 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
 
 static u64 of_get_phys_base(struct device_node *np)
 {
-	u64 size64;
-	const __be32 *regaddr_p;
+	struct resource res;
 
-	regaddr_p = of_get_address(np, 0, &size64, NULL);
-	if (!regaddr_p)
+	if (of_address_to_resource(np, 0, &res))
 		return OF_BAD_ADDR;
 
-	return of_translate_address(np, regaddr_p);
+	return res.start;
 }
 
 static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
@@ -1186,14 +1204,6 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 
 	mt->conf = of_device_get_match_data(&pdev->dev);
 
-	mt->clk_peri_therm = devm_clk_get(&pdev->dev, "therm");
-	if (IS_ERR(mt->clk_peri_therm))
-		return PTR_ERR(mt->clk_peri_therm);
-
-	mt->clk_auxadc = devm_clk_get(&pdev->dev, "auxadc");
-	if (IS_ERR(mt->clk_auxadc))
-		return PTR_ERR(mt->clk_auxadc);
-
 	mt->thermal_base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 	if (IS_ERR(mt->thermal_base))
 		return PTR_ERR(mt->thermal_base);
@@ -1212,7 +1222,12 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	auxadc_base = of_iomap(auxadc, 0);
+	auxadc_base = devm_of_iomap(&pdev->dev, auxadc, 0, NULL);
+	if (IS_ERR(auxadc_base)) {
+		of_node_put(auxadc);
+		return PTR_ERR(auxadc_base);
+	}
+
 	auxadc_phys_base = of_get_phys_base(auxadc);
 
 	of_node_put(auxadc);
@@ -1228,7 +1243,12 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	apmixed_base = of_iomap(apmixedsys, 0);
+	apmixed_base = devm_of_iomap(&pdev->dev, apmixedsys, 0, NULL);
+	if (IS_ERR(apmixed_base)) {
+		of_node_put(apmixedsys);
+		return PTR_ERR(apmixed_base);
+	}
+
 	apmixed_phys_base = of_get_phys_base(apmixedsys);
 
 	of_node_put(apmixedsys);
@@ -1242,16 +1262,18 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(mt->clk_auxadc);
-	if (ret) {
+	mt->clk_auxadc = devm_clk_get_enabled(&pdev->dev, "auxadc");
+	if (IS_ERR(mt->clk_auxadc)) {
+		ret = PTR_ERR(mt->clk_auxadc);
 		dev_err(&pdev->dev, "Can't enable auxadc clk: %d\n", ret);
 		return ret;
 	}
 
-	ret = clk_prepare_enable(mt->clk_peri_therm);
-	if (ret) {
+	mt->clk_peri_therm = devm_clk_get_enabled(&pdev->dev, "therm");
+	if (IS_ERR(mt->clk_peri_therm)) {
+		ret = PTR_ERR(mt->clk_peri_therm);
 		dev_err(&pdev->dev, "Can't enable peri clk: %d\n", ret);
-		goto err_disable_clk_auxadc;
+		return ret;
 	}
 
 	mtk_thermal_turn_on_buffer(mt, apmixed_base);
@@ -1273,43 +1295,20 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, mt);
 
-	/* Delay for thermal banks to be ready */
-	msleep(30);
-
 	tzdev = devm_thermal_of_zone_register(&pdev->dev, 0, mt,
 					      &mtk_thermal_ops);
-	if (IS_ERR(tzdev)) {
-		ret = PTR_ERR(tzdev);
-		goto err_disable_clk_peri_therm;
-	}
+	if (IS_ERR(tzdev))
+		return PTR_ERR(tzdev);
 
 	ret = devm_thermal_add_hwmon_sysfs(&pdev->dev, tzdev);
 	if (ret)
 		dev_warn(&pdev->dev, "error in thermal_add_hwmon_sysfs");
 
 	return 0;
-
-err_disable_clk_peri_therm:
-	clk_disable_unprepare(mt->clk_peri_therm);
-err_disable_clk_auxadc:
-	clk_disable_unprepare(mt->clk_auxadc);
-
-	return ret;
-}
-
-static int mtk_thermal_remove(struct platform_device *pdev)
-{
-	struct mtk_thermal *mt = platform_get_drvdata(pdev);
-
-	clk_disable_unprepare(mt->clk_peri_therm);
-	clk_disable_unprepare(mt->clk_auxadc);
-
-	return 0;
 }
 
 static struct platform_driver mtk_thermal_driver = {
 	.probe = mtk_thermal_probe,
-	.remove = mtk_thermal_remove,
 	.driver = {
 		.name = "mtk-thermal",
 		.of_match_table = mtk_thermal_of_match,

drivers/thermal/thermal_core.c

@@ -1398,6 +1398,12 @@ int thermal_zone_device_id(struct thermal_zone_device *tzd)
 }
 EXPORT_SYMBOL_GPL(thermal_zone_device_id);
 
+struct device *thermal_zone_device(struct thermal_zone_device *tzd)
+{
+	return &tzd->device;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device);
+
 /**
  * thermal_zone_device_unregister - removes the registered thermal zone device
  * @tz: the thermal zone device to remove

include/linux/thermal.h

@@ -313,6 +313,7 @@ thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int
 void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
 const char *thermal_zone_device_type(struct thermal_zone_device *tzd);
 int thermal_zone_device_id(struct thermal_zone_device *tzd);
+struct device *thermal_zone_device(struct thermal_zone_device *tzd);
 
 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
 				     struct thermal_cooling_device *,