Merge branches 'thermal-core', 'thermal-intel', 'thermal-soc-fixes' and 'thermal-reorg' into next

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

@@ -22,10 +22,13 @@ Required properties:
 	      TSADC controller.
 - pinctrl-2 : The "sleep" pinctrl state, it will be in for suspend.
 - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
+
+Optional properties:
 - rockchip,hw-tshut-temp : The hardware-controlled shutdown temperature value.
 - rockchip,hw-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO.
 - rockchip,hw-tshut-polarity : The hardware-controlled active polarity 0:LOW
 			       1:HIGH.
+- rockchip,grf : The phandle of the syscon node for the general register file.
 
 Exiample:
 tsadc: tsadc@ff280000 {

drivers/thermal/Kconfig

@@ -177,8 +177,10 @@ config THERMAL_EMULATION
 
 config HISI_THERMAL
 	tristate "Hisilicon thermal driver"
-	depends on (ARCH_HISI && CPU_THERMAL && OF) || COMPILE_TEST
+	depends on ARCH_HISI || COMPILE_TEST
 	depends on HAS_IOMEM
+	depends on OF
+	default y
 	help
 	  Enable this to plug hisilicon's thermal sensor driver into the Linux
 	  thermal framework. cpufreq is used as the cooling device to throttle

drivers/thermal/Makefile

@@ -3,7 +3,8 @@
 #
 
 obj-$(CONFIG_THERMAL)		+= thermal_sys.o
-thermal_sys-y			+= thermal_core.o
+thermal_sys-y			+= thermal_core.o thermal_sysfs.o \
+					thermal_helpers.o
 
 # interface to/from other layers providing sensors
 thermal_sys-$(CONFIG_THERMAL_HWMON)		+= thermal_hwmon.o

drivers/thermal/db8500_thermal.c

@@ -512,6 +512,7 @@ static const struct of_device_id db8500_thermal_match[] = {
 	{ .compatible = "stericsson,db8500-thermal" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, db8500_thermal_match);
 #endif
 
 static struct platform_driver db8500_thermal_driver = {

drivers/thermal/devfreq_cooling.c

@@ -238,7 +238,7 @@ get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
 		return 0;
 	}
 
-	return dfc->power_ops->get_static_power(voltage);
+	return dfc->power_ops->get_static_power(df, voltage);
 }
 
 /**
@@ -262,7 +262,8 @@ get_dynamic_power(struct devfreq_cooling_device *dfc, unsigned long freq,
 	struct devfreq_cooling_power *dfc_power = dfc->power_ops;
 
 	if (dfc_power->get_dynamic_power)
-		return dfc_power->get_dynamic_power(freq, voltage);
+		return dfc_power->get_dynamic_power(dfc->devfreq, freq,
+						    voltage);
 
 	freq_mhz = freq / 1000000;
 	power = (u64)dfc_power->dyn_power_coeff * freq_mhz * voltage * voltage;

drivers/thermal/intel_pch_thermal.c

@@ -29,6 +29,7 @@
 #define PCH_THERMAL_DID_HSW_2	0x8C24 /* Haswell PCH */
 #define PCH_THERMAL_DID_WPT	0x9CA4 /* Wildcat Point */
 #define PCH_THERMAL_DID_SKL	0x9D31 /* Skylake PCH */
+#define PCH_THERMAL_DID_SKL_H	0xA131 /* Skylake PCH 100 series */
 
 /* Wildcat Point-LP  PCH Thermal registers */
 #define WPT_TEMP	0x0000	/* Temperature */
@@ -273,37 +274,44 @@ static struct thermal_zone_device_ops tzd_ops = {
 	.get_trip_temp = pch_get_trip_temp,
 };
 
+enum board_ids {
+	board_hsw,
+	board_wpt,
+	board_skl,
+};
+
+static const struct board_info {
+	const char *name;
+	const struct pch_dev_ops *ops;
+} board_info[] = {
+	[board_hsw] = {
+		.name = "pch_haswell",
+		.ops = &pch_dev_ops_wpt,
+	},
+	[board_wpt] = {
+		.name = "pch_wildcat_point",
+		.ops = &pch_dev_ops_wpt,
+	},
+	[board_skl] = {
+		.name = "pch_skylake",
+		.ops = &pch_dev_ops_wpt,
+	},
+};
 
 static int intel_pch_thermal_probe(struct pci_dev *pdev,
 				   const struct pci_device_id *id)
 {
+	enum board_ids board_id = id->driver_data;
+	const struct board_info *bi = &board_info[board_id];
 	struct pch_thermal_device *ptd;
 	int err;
 	int nr_trips;
-	char *dev_name;
 
 	ptd = devm_kzalloc(&pdev->dev, sizeof(*ptd), GFP_KERNEL);
 	if (!ptd)
 		return -ENOMEM;
 
-	switch (pdev->device) {
-	case PCH_THERMAL_DID_WPT:
-		ptd->ops = &pch_dev_ops_wpt;
-		dev_name = "pch_wildcat_point";
-		break;
-	case PCH_THERMAL_DID_SKL:
-		ptd->ops = &pch_dev_ops_wpt;
-		dev_name = "pch_skylake";
-		break;
-	case PCH_THERMAL_DID_HSW_1:
-	case PCH_THERMAL_DID_HSW_2:
-		ptd->ops = &pch_dev_ops_wpt;
-		dev_name = "pch_haswell";
-		break;
-	default:
-		dev_err(&pdev->dev, "unknown pch thermal device\n");
-		return -ENODEV;
-	}
+	ptd->ops = bi->ops;
 
 	pci_set_drvdata(pdev, ptd);
 	ptd->pdev = pdev;
@@ -331,11 +339,11 @@ static int intel_pch_thermal_probe(struct pci_dev *pdev,
 	if (err)
 		goto error_cleanup;
 
-	ptd->tzd = thermal_zone_device_register(dev_name, nr_trips, 0, ptd,
+	ptd->tzd = thermal_zone_device_register(bi->name, nr_trips, 0, ptd,
 						&tzd_ops, NULL, 0, 0);
 	if (IS_ERR(ptd->tzd)) {
 		dev_err(&pdev->dev, "Failed to register thermal zone %s\n",
-			dev_name);
+			bi->name);
 		err = PTR_ERR(ptd->tzd);
 		goto error_cleanup;
 	}
@@ -380,10 +388,16 @@ static int intel_pch_thermal_resume(struct device *device)
 }
 
 static struct pci_device_id intel_pch_thermal_id[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WPT) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_1) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_2) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_1),
+		.driver_data = board_hsw, },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_2),
+		.driver_data = board_hsw, },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WPT),
+		.driver_data = board_wpt, },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL),
+		.driver_data = board_skl, },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL_H),
+		.driver_data = board_skl, },
 	{ 0, },
 };
 MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id);

drivers/thermal/max77620_thermal.c

@@ -149,6 +149,7 @@ static struct platform_device_id max77620_thermal_devtype[] = {
 	{ .name = "max77620-thermal", },
 	{},
 };
+MODULE_DEVICE_TABLE(platform, max77620_thermal_devtype);
 
 static struct platform_driver max77620_thermal_driver = {
 	.driver = {

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

@@ -200,7 +200,7 @@ static int qpnp_tm_probe(struct platform_device *pdev)
 	struct qpnp_tm_chip *chip;
 	struct device_node *node;
 	u8 type, subtype;
-	u32 res[2];
+	u32 res;
 	int ret, irq;
 
 	node = pdev->dev.of_node;
@@ -215,7 +215,7 @@ static int qpnp_tm_probe(struct platform_device *pdev)
 	if (!chip->map)
 		return -ENXIO;
 
-	ret = of_property_read_u32_array(node, "reg", res, 2);
+	ret = of_property_read_u32(node, "reg", &res);
 	if (ret < 0)
 		return ret;
 
@@ -228,7 +228,7 @@ static int qpnp_tm_probe(struct platform_device *pdev)
 	if (PTR_ERR(chip->adc) == -EPROBE_DEFER)
 		return PTR_ERR(chip->adc);
 
-	chip->base = res[0];
+	chip->base = res;
 
 	ret = qpnp_tm_read(chip, QPNP_TM_REG_TYPE, &type);
 	if (ret < 0) {

drivers/thermal/rockchip_thermal.c

@@ -524,11 +524,6 @@ static void rk_tsadcv2_initialize(struct regmap *grf, void __iomem *regs,
 		       regs + TSADCV2_AUTO_PERIOD_HT);
 	writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
 		       regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
-
-	if (IS_ERR(grf)) {
-		pr_warn("%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
 }
 
 /**
@@ -971,6 +966,8 @@ static int rockchip_configure_from_dt(struct device *dev,
 	 * need this property.
 	 */
 	thermal->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
+	if (IS_ERR(thermal->grf))
+		dev_warn(dev, "Missing rockchip,grf property\n");
 
 	return 0;
 }

drivers/thermal/tango_thermal.c

@@ -107,6 +107,7 @@ static const struct of_device_id tango_sensor_ids[] = {
 	},
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, tango_sensor_ids);
 
 static struct platform_driver tango_thermal_driver = {
 	.probe	= tango_thermal_probe,

drivers/thermal/thermal_core.h

@@ -54,8 +54,34 @@ struct thermal_instance {
 	unsigned int weight; /* The weight of the cooling device */
 };
 
+#define to_thermal_zone(_dev) \
+	container_of(_dev, struct thermal_zone_device, device)
+
+#define to_cooling_device(_dev)	\
+	container_of(_dev, struct thermal_cooling_device, device)
+
 int thermal_register_governor(struct thermal_governor *);
 void thermal_unregister_governor(struct thermal_governor *);
+void thermal_zone_device_rebind_exception(struct thermal_zone_device *,
+					  const char *, size_t);
+void thermal_zone_device_unbind_exception(struct thermal_zone_device *,
+					  const char *, size_t);
+int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
+int thermal_build_list_of_policies(char *buf);
+
+/* sysfs I/F */
+int thermal_zone_create_device_groups(struct thermal_zone_device *, int);
+void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *);
+/* used only at binding time */
+ssize_t
+thermal_cooling_device_trip_point_show(struct device *,
+				       struct device_attribute *, char *);
+ssize_t thermal_cooling_device_weight_show(struct device *,
+					   struct device_attribute *, char *);
+
+ssize_t thermal_cooling_device_weight_store(struct device *,
+					    struct device_attribute *,
+					    const char *, size_t);
 
 #ifdef CONFIG_THERMAL_GOV_STEP_WISE
 int thermal_gov_step_wise_register(void);

drivers/thermal/thermal_helpers.c

+/*
+ *  thermal_helpers.c - helper functions to handle thermal devices
+ *
+ *  Copyright (C) 2016 Eduardo Valentin <edubezval@gmail.com>
+ *
+ *  Highly based on original thermal_core.c
+ *  Copyright (C) 2008 Intel Corp
+ *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/sysfs.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include <trace/events/thermal.h>
+
+#include "thermal_core.h"
+
+int get_tz_trend(struct thermal_zone_device *tz, int trip)
+{
+	enum thermal_trend trend;
+
+	if (tz->emul_temperature || !tz->ops->get_trend ||
+	    tz->ops->get_trend(tz, trip, &trend)) {
+		if (tz->temperature > tz->last_temperature)
+			trend = THERMAL_TREND_RAISING;
+		else if (tz->temperature < tz->last_temperature)
+			trend = THERMAL_TREND_DROPPING;
+		else
+			trend = THERMAL_TREND_STABLE;
+	}
+
+	return trend;
+}
+EXPORT_SYMBOL(get_tz_trend);
+
+struct thermal_instance *
+get_thermal_instance(struct thermal_zone_device *tz,
+		     struct thermal_cooling_device *cdev, int trip)
+{
+	struct thermal_instance *pos = NULL;
+	struct thermal_instance *target_instance = NULL;
+
+	mutex_lock(&tz->lock);
+	mutex_lock(&cdev->lock);
+
+	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
+		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
+			target_instance = pos;
+			break;
+		}
+	}
+
+	mutex_unlock(&cdev->lock);
+	mutex_unlock(&tz->lock);
+
+	return target_instance;
+}
+EXPORT_SYMBOL(get_thermal_instance);
+
+/**
+ * thermal_zone_get_temp() - returns the temperature of a thermal zone
+ * @tz: a valid pointer to a struct thermal_zone_device
+ * @temp: a valid pointer to where to store the resulting temperature.
+ *
+ * When a valid thermal zone reference is passed, it will fetch its
+ * temperature and fill @temp.
+ *
+ * Return: On success returns 0, an error code otherwise
+ */
+int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	int ret = -EINVAL;
+	int count;
+	int crit_temp = INT_MAX;
+	enum thermal_trip_type type;
+
+	if (!tz || IS_ERR(tz) || !tz->ops->get_temp)
+		goto exit;
+
+	mutex_lock(&tz->lock);
+
+	ret = tz->ops->get_temp(tz, temp);
+
+	if (IS_ENABLED(CONFIG_THERMAL_EMULATION) && tz->emul_temperature) {
+		for (count = 0; count < tz->trips; count++) {
+			ret = tz->ops->get_trip_type(tz, count, &type);
+			if (!ret && type == THERMAL_TRIP_CRITICAL) {
+				ret = tz->ops->get_trip_temp(tz, count,
+						&crit_temp);
+				break;
+			}
+		}
+
+		/*
+		 * Only allow emulating a temperature when the real temperature
+		 * is below the critical temperature so that the emulation code
+		 * cannot hide critical conditions.
+		 */
+		if (!ret && *temp < crit_temp)
+			*temp = tz->emul_temperature;
+	}
+
+	mutex_unlock(&tz->lock);
+exit:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_get_temp);
+
+void thermal_zone_set_trips(struct thermal_zone_device *tz)
+{
+	int low = -INT_MAX;
+	int high = INT_MAX;
+	int trip_temp, hysteresis;
+	int i, ret;
+
+	mutex_lock(&tz->lock);
+
+	if (!tz->ops->set_trips || !tz->ops->get_trip_hyst)
+		goto exit;
+
+	for (i = 0; i < tz->trips; i++) {
+		int trip_low;
+
+		tz->ops->get_trip_temp(tz, i, &trip_temp);
+		tz->ops->get_trip_hyst(tz, i, &hysteresis);
+
+		trip_low = trip_temp - hysteresis;
+
+		if (trip_low < tz->temperature && trip_low > low)
+			low = trip_low;
+
+		if (trip_temp > tz->temperature && trip_temp < high)
+			high = trip_temp;
+	}
+
+	/* No need to change trip points */
+	if (tz->prev_low_trip == low && tz->prev_high_trip == high)
+		goto exit;
+
+	tz->prev_low_trip = low;
+	tz->prev_high_trip = high;
+
+	dev_dbg(&tz->device,
+		"new temperature boundaries: %d < x < %d\n", low, high);
+
+	/*
+	 * Set a temperature window. When this window is left the driver
+	 * must inform the thermal core via thermal_zone_device_update.
+	 */
+	ret = tz->ops->set_trips(tz, low, high);
+	if (ret)
+		dev_err(&tz->device, "Failed to set trips: %d\n", ret);
+
+exit:
+	mutex_unlock(&tz->lock);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_set_trips);
+
+void thermal_cdev_update(struct thermal_cooling_device *cdev)
+{
+	struct thermal_instance *instance;
+	unsigned long target = 0;
+
+	mutex_lock(&cdev->lock);
+	/* cooling device is updated*/
+	if (cdev->updated) {
+		mutex_unlock(&cdev->lock);
+		return;
+	}
+
+	/* Make sure cdev enters the deepest cooling state */
+	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
+		dev_dbg(&cdev->device, "zone%d->target=%lu\n",
+			instance->tz->id, instance->target);
+		if (instance->target == THERMAL_NO_TARGET)
+			continue;
+		if (instance->target > target)
+			target = instance->target;
+	}
+	cdev->ops->set_cur_state(cdev, target);
+	cdev->updated = true;
+	mutex_unlock(&cdev->lock);
+	trace_cdev_update(cdev, target);
+	dev_dbg(&cdev->device, "set to state %lu\n", target);
+}
+EXPORT_SYMBOL(thermal_cdev_update);
+
+/**
+ * thermal_zone_get_slope - return the slope attribute of the thermal zone
+ * @tz: thermal zone device with the slope attribute
+ *
+ * Return: If the thermal zone device has a slope attribute, return it, else
+ * return 1.
+ */
+int thermal_zone_get_slope(struct thermal_zone_device *tz)
+{
+	if (tz && tz->tzp)
+		return tz->tzp->slope;
+	return 1;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_get_slope);
+
+/**
+ * thermal_zone_get_offset - return the offset attribute of the thermal zone
+ * @tz: thermal zone device with the offset attribute
+ *
+ * Return: If the thermal zone device has a offset attribute, return it, else
+ * return 0.
+ */
+int thermal_zone_get_offset(struct thermal_zone_device *tz)
+{
+	if (tz && tz->tzp)
+		return tz->tzp->offset;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_get_offset);

drivers/thermal/ti-soc-thermal/ti-bandgap.c

@@ -1298,7 +1298,7 @@ int ti_bandgap_probe(struct platform_device *pdev)
 	if (IS_ERR(bgp->div_clk)) {
 		dev_err(&pdev->dev, "failed to request div_ts_ck clock ref\n");
 		ret = PTR_ERR(bgp->div_clk);
-		goto free_irqs;
+		goto put_fclock;
 	}
 
 	for (i = 0; i < bgp->conf->sensor_count; i++) {
@@ -1430,8 +1430,9 @@ int ti_bandgap_probe(struct platform_device *pdev)
 	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
 		clk_disable_unprepare(bgp->fclock);
 put_clks:
-	clk_put(bgp->fclock);
 	clk_put(bgp->div_clk);
+put_fclock:
+	clk_put(bgp->fclock);
 free_irqs:
 	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
 		free_irq(gpio_to_irq(bgp->tshut_gpio), NULL);

include/linux/devfreq_cooling.h

@@ -20,7 +20,6 @@
 #include <linux/devfreq.h>
 #include <linux/thermal.h>
 
-#ifdef CONFIG_DEVFREQ_THERMAL
 
 /**
  * struct devfreq_cooling_power - Devfreq cooling power ops
@@ -37,12 +36,16 @@
  *			@dyn_power_coeff * frequency * voltage^2
  */
 struct devfreq_cooling_power {
-	unsigned long (*get_static_power)(unsigned long voltage);
-	unsigned long (*get_dynamic_power)(unsigned long freq,
+	unsigned long (*get_static_power)(struct devfreq *devfreq,
+					  unsigned long voltage);
+	unsigned long (*get_dynamic_power)(struct devfreq *devfreq,
+					   unsigned long freq,
 					   unsigned long voltage);
 	unsigned long dyn_power_coeff;
 };
 
+#ifdef CONFIG_DEVFREQ_THERMAL
+
 struct thermal_cooling_device *
 of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
 				  struct devfreq_cooling_power *dfc_power);

include/linux/thermal.h

@@ -28,6 +28,7 @@
 #include <linux/of.h>
 #include <linux/idr.h>
 #include <linux/device.h>
+#include <linux/sysfs.h>
 #include <linux/workqueue.h>
 #include <uapi/linux/thermal.h>
 
@@ -204,6 +205,7 @@ struct thermal_zone_device {
 	int id;
 	char type[THERMAL_NAME_LENGTH];
 	struct device device;
+	struct attribute_group trips_attribute_group;
 	struct thermal_attr *trip_temp_attrs;
 	struct thermal_attr *trip_type_attrs;
 	struct thermal_attr *trip_hyst_attrs;