[RFC v3 1/2] thermal: core: Let thermal zone device's mode be stored in its struct

[Andrzej Pietrasiewicz <andrzej.p@collabora.com>]

Thermal zone devices' mode is stored in individual drivers. This patch
changes it so that mode is stored in struct thermal_zone_device instead.

As a result all driver-specific variables storing the mode are not needed
and are removed. Consequently, the get_mode() implementations have nothing
to operate on and need to be removed, too.

Some thermal framework specific functions are introduced:

thermal_zone_device_get_mode()
thermal_zone_device_set_mode()
thermal_zone_device_enable()
thermal_zone_device_disable()

thermal_zone_device_get_mode() and its "set" counterpart take tzd's lock
and the "set" calls driver's set_mode() if provided, so the latter must
not take this lock again. At the end of the "set"
thermal_zone_device_update() is called so drivers don't need to repeat this
invocation in their specific set_mode() implementations.

The scope of the above 4 functions is purposedly limited to the thermal
framework and drivers are not supposed to call them. This encapsulation
does not fully work at the moment for some drivers, though:

- platform/x86/acerhdf.c
- drivers/thermal/imx_thermal.c
- drivers/thermal/intel/intel_quark_dts_thermal.c
- drivers/thermal/of-thermal.c

and they manipulate struct thermal_zone_device's members directly.

struct thermal_zone_params gains a new member called initial_mode, which
is used to set tzd's mode at registration time.

The sysfs "mode" attribute is always exposed from now on, because all
thermal zone devices now have their get_mode() implemented at the generic
level and it is always available. Exposing "mode" doesn't hurt the drivers
which don't provide their own set_mode(), because writing to "mode" will
result in -EPERM, as expected.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
---
 drivers/acpi/thermal.c                        | 46 +++++----------
 .../ethernet/mellanox/mlxsw/core_thermal.c    | 57 ++++---------------
 drivers/platform/x86/acerhdf.c                | 17 +-----
 drivers/thermal/da9062-thermal.c              | 16 ++----
 drivers/thermal/imx_thermal.c                 | 29 +++-------
 .../intel/int340x_thermal/int3400_thermal.c   | 30 ++--------
 .../thermal/intel/intel_quark_dts_thermal.c   | 22 ++-----
 drivers/thermal/of-thermal.c                  | 30 +++-------
 drivers/thermal/thermal_core.c                | 44 +++++++++++++-
 drivers/thermal/thermal_core.h                | 16 ++++++
 drivers/thermal/thermal_sysfs.c               | 29 +---------
 include/linux/thermal.h                       |  7 ++-
 12 files changed, 125 insertions(+), 218 deletions(-)

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 19067a5e5293..67bc263332a5 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -172,7 +172,6 @@ struct acpi_thermal {
 	struct acpi_thermal_trips trips;
 	struct acpi_handle_list devices;
 	struct thermal_zone_device *thermal_zone;
-	int tz_enabled;
 	int kelvin_offset;	/* in millidegrees */
 	struct work_struct thermal_check_work;
 };
@@ -500,7 +499,7 @@ static void acpi_thermal_check(void *data)
 {
 	struct acpi_thermal *tz = data;
 
-	if (!tz->tz_enabled)
+	if (tz->thermal_zone->mode != THERMAL_DEVICE_ENABLED)
 		return;
 
 	thermal_zone_device_update(tz->thermal_zone,
@@ -526,46 +525,29 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
 	return 0;
 }
 
-static int thermal_get_mode(struct thermal_zone_device *thermal,
-				enum thermal_device_mode *mode)
-{
-	struct acpi_thermal *tz = thermal->devdata;
-
-	if (!tz)
-		return -EINVAL;
-
-	*mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED :
-		THERMAL_DEVICE_DISABLED;
-
-	return 0;
-}
-
 static int thermal_set_mode(struct thermal_zone_device *thermal,
 				enum thermal_device_mode mode)
 {
 	struct acpi_thermal *tz = thermal->devdata;
-	int enable;
 
 	if (!tz)
 		return -EINVAL;
 
+	if (mode != THERMAL_DEVICE_DISABLED &&
+	    mode != THERMAL_DEVICE_ENABLED)
+		return -EINVAL;
+
 	/*
 	 * enable/disable thermal management from ACPI thermal driver
 	 */
-	if (mode == THERMAL_DEVICE_ENABLED)
-		enable = 1;
-	else if (mode == THERMAL_DEVICE_DISABLED) {
-		enable = 0;
+	if (mode == THERMAL_DEVICE_DISABLED)
 		pr_warn("thermal zone will be disabled\n");
-	} else
-		return -EINVAL;
 
-	if (enable != tz->tz_enabled) {
-		tz->tz_enabled = enable;
+	if (mode != thermal->mode) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			"%s kernel ACPI thermal control\n",
-			tz->tz_enabled ? "Enable" : "Disable"));
-		acpi_thermal_check(tz);
+			mode == THERMAL_DEVICE_ENABLED ?
+			"Enable" : "Disable"));
 	}
 	return 0;
 }
@@ -856,7 +838,6 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
 	.bind = acpi_thermal_bind_cooling_device,
 	.unbind	= acpi_thermal_unbind_cooling_device,
 	.get_temp = thermal_get_temp,
-	.get_mode = thermal_get_mode,
 	.set_mode = thermal_set_mode,
 	.get_trip_type = thermal_get_trip_type,
 	.get_trip_temp = thermal_get_trip_temp,
@@ -870,6 +851,9 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 	int trips = 0;
 	int result;
 	acpi_status status;
+	struct thermal_zone_params prms = {
+		.initial_mode = THERMAL_DEVICE_ENABLED,
+	};
 	int i;
 
 	if (tz->trips.critical.flags.valid)
@@ -887,13 +871,13 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 	if (tz->trips.passive.flags.valid)
 		tz->thermal_zone =
 			thermal_zone_device_register("acpitz", trips, 0, tz,
-						&acpi_thermal_zone_ops, NULL,
+						&acpi_thermal_zone_ops, &prms,
 						     tz->trips.passive.tsp*100,
 						     tz->polling_frequency*100);
 	else
 		tz->thermal_zone =
 			thermal_zone_device_register("acpitz", trips, 0, tz,
-						&acpi_thermal_zone_ops, NULL,
+						&acpi_thermal_zone_ops, &prms,
 						0, tz->polling_frequency*100);
 	if (IS_ERR(tz->thermal_zone))
 		return -ENODEV;
@@ -913,8 +897,6 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	tz->tz_enabled = 1;
-
 	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
 		 tz->thermal_zone->id);
 	return 0;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index ce0a6837daa3..50518048b86d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -98,7 +98,6 @@ struct mlxsw_thermal_module {
 	struct mlxsw_thermal *parent;
 	struct thermal_zone_device *tzdev;
 	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
-	enum thermal_device_mode mode;
 	int module; /* Module or gearbox number */
 };
 
@@ -110,7 +109,6 @@ struct mlxsw_thermal {
 	struct thermal_cooling_device *cdevs[MLXSW_MFCR_PWMS_MAX];
 	u8 cooling_levels[MLXSW_THERMAL_MAX_STATE + 1];
 	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
-	enum thermal_device_mode mode;
 	struct mlxsw_thermal_module *tz_module_arr;
 	u8 tz_module_num;
 	struct mlxsw_thermal_module *tz_gearbox_arr;
@@ -277,33 +275,16 @@ static int mlxsw_thermal_unbind(struct thermal_zone_device *tzdev,
 	return 0;
 }
 
-static int mlxsw_thermal_get_mode(struct thermal_zone_device *tzdev,
-				  enum thermal_device_mode *mode)
-{
-	struct mlxsw_thermal *thermal = tzdev->devdata;
-
-	*mode = thermal->mode;
-
-	return 0;
-}
-
 static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
 				  enum thermal_device_mode mode)
 {
 	struct mlxsw_thermal *thermal = tzdev->devdata;
 
-	mutex_lock(&tzdev->lock);
-
 	if (mode == THERMAL_DEVICE_ENABLED)
 		tzdev->polling_delay = thermal->polling_delay;
 	else
 		tzdev->polling_delay = 0;
 
-	mutex_unlock(&tzdev->lock);
-
-	thermal->mode = mode;
-	thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
-
 	return 0;
 }
 
@@ -407,7 +388,6 @@ static int mlxsw_thermal_trend_get(struct thermal_zone_device *tzdev,
 static struct thermal_zone_device_ops mlxsw_thermal_ops = {
 	.bind = mlxsw_thermal_bind,
 	.unbind = mlxsw_thermal_unbind,
-	.get_mode = mlxsw_thermal_get_mode,
 	.set_mode = mlxsw_thermal_set_mode,
 	.get_temp = mlxsw_thermal_get_temp,
 	.get_trip_type	= mlxsw_thermal_get_trip_type,
@@ -466,34 +446,17 @@ static int mlxsw_thermal_module_unbind(struct thermal_zone_device *tzdev,
 	return err;
 }
 
-static int mlxsw_thermal_module_mode_get(struct thermal_zone_device *tzdev,
-					 enum thermal_device_mode *mode)
-{
-	struct mlxsw_thermal_module *tz = tzdev->devdata;
-
-	*mode = tz->mode;
-
-	return 0;
-}
-
 static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
 					 enum thermal_device_mode mode)
 {
 	struct mlxsw_thermal_module *tz = tzdev->devdata;
 	struct mlxsw_thermal *thermal = tz->parent;
 
-	mutex_lock(&tzdev->lock);
-
 	if (mode == THERMAL_DEVICE_ENABLED)
 		tzdev->polling_delay = thermal->polling_delay;
 	else
 		tzdev->polling_delay = 0;
 
-	mutex_unlock(&tzdev->lock);
-
-	tz->mode = mode;
-	thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
-
 	return 0;
 }
 
@@ -596,7 +559,6 @@ mlxsw_thermal_module_trip_hyst_set(struct thermal_zone_device *tzdev, int trip,
 static struct thermal_zone_device_ops mlxsw_thermal_module_ops = {
 	.bind		= mlxsw_thermal_module_bind,
 	.unbind		= mlxsw_thermal_module_unbind,
-	.get_mode	= mlxsw_thermal_module_mode_get,
 	.set_mode	= mlxsw_thermal_module_mode_set,
 	.get_temp	= mlxsw_thermal_module_temp_get,
 	.get_trip_type	= mlxsw_thermal_module_trip_type_get,
@@ -635,7 +597,6 @@ static int mlxsw_thermal_gearbox_temp_get(struct thermal_zone_device *tzdev,
 static struct thermal_zone_device_ops mlxsw_thermal_gearbox_ops = {
 	.bind		= mlxsw_thermal_module_bind,
 	.unbind		= mlxsw_thermal_module_unbind,
-	.get_mode	= mlxsw_thermal_module_mode_get,
 	.set_mode	= mlxsw_thermal_module_mode_set,
 	.get_temp	= mlxsw_thermal_gearbox_temp_get,
 	.get_trip_type	= mlxsw_thermal_module_trip_type_get,
@@ -749,6 +710,9 @@ static const struct thermal_cooling_device_ops mlxsw_cooling_ops = {
 static int
 mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
 {
+	struct thermal_zone_params tzp = {
+		.initial_mode = THERMAL_DEVICE_ENABLED,
+	};
 	char tz_name[MLXSW_THERMAL_ZONE_MAX_NAME];
 	int err;
 
@@ -759,13 +723,12 @@ mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
 							MLXSW_THERMAL_TRIP_MASK,
 							module_tz,
 							&mlxsw_thermal_module_ops,
-							NULL, 0, 0);
+							&tzp, 0, 0);
 	if (IS_ERR(module_tz->tzdev)) {
 		err = PTR_ERR(module_tz->tzdev);
 		return err;
 	}
 
-	module_tz->mode = THERMAL_DEVICE_ENABLED;
 	return 0;
 }
 
@@ -868,6 +831,9 @@ mlxsw_thermal_modules_fini(struct mlxsw_thermal *thermal)
 static int
 mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
 {
+	struct thermal_zone_params tzp = {
+		.initial_mode = THERMAL_DEVICE_ENABLED,
+	};
 	char tz_name[MLXSW_THERMAL_ZONE_MAX_NAME];
 
 	snprintf(tz_name, sizeof(tz_name), "mlxsw-gearbox%d",
@@ -877,11 +843,10 @@ mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
 						MLXSW_THERMAL_TRIP_MASK,
 						gearbox_tz,
 						&mlxsw_thermal_gearbox_ops,
-						NULL, 0, 0);
+						&tzp, 0, 0);
 	if (IS_ERR(gearbox_tz->tzdev))
 		return PTR_ERR(gearbox_tz->tzdev);
 
-	gearbox_tz->mode = THERMAL_DEVICE_ENABLED;
 	return 0;
 }
 
@@ -960,6 +925,9 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
 		       const struct mlxsw_bus_info *bus_info,
 		       struct mlxsw_thermal **p_thermal)
 {
+	struct thermal_zone_params tzp = {
+		.initial_mode = THERMAL_DEVICE_ENABLED,
+	};
 	char mfcr_pl[MLXSW_REG_MFCR_LEN] = { 0 };
 	enum mlxsw_reg_mfcr_pwm_frequency freq;
 	struct device *dev = bus_info->dev;
@@ -1034,7 +1002,7 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
 						      MLXSW_THERMAL_TRIP_MASK,
 						      thermal,
 						      &mlxsw_thermal_ops,
-						      NULL, 0,
+						      &tzp, 0,
 						      thermal->polling_delay);
 	if (IS_ERR(thermal->tzdev)) {
 		err = PTR_ERR(thermal->tzdev);
@@ -1050,7 +1018,6 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
 	if (err)
 		goto err_unreg_modules_tzdev;
 
-	thermal->mode = THERMAL_DEVICE_ENABLED;
 	*p_thermal = thermal;
 	return 0;
 
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 8cc86f4e3ac1..aaf8b845be90 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -406,22 +406,9 @@ static inline void acerhdf_enable_kernelmode(void)
 	kernelmode = 1;
 
 	thz_dev->polling_delay = interval*1000;
-	thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED);
 	pr_notice("kernel mode fan control ON\n");
 }
 
-static int acerhdf_get_mode(struct thermal_zone_device *thermal,
-			    enum thermal_device_mode *mode)
-{
-	if (verbose)
-		pr_notice("kernel mode fan control %d\n", kernelmode);
-
-	*mode = (kernelmode) ? THERMAL_DEVICE_ENABLED
-			     : THERMAL_DEVICE_DISABLED;
-
-	return 0;
-}
-
 /*
  * set operation mode;
  * enabled: the thermal layer of the kernel takes care about
@@ -488,7 +475,6 @@ static struct thermal_zone_device_ops acerhdf_dev_ops = {
 	.bind = acerhdf_bind,
 	.unbind = acerhdf_unbind,
 	.get_temp = acerhdf_get_ec_temp,
-	.get_mode = acerhdf_get_mode,
 	.set_mode = acerhdf_set_mode,
 	.get_trip_type = acerhdf_get_trip_type,
 	.get_trip_hyst = acerhdf_get_trip_hyst,
@@ -554,6 +540,7 @@ static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev,
 
 err_out:
 	acerhdf_revert_to_bios_mode();
+	thz_dev->mode = THERMAL_DEVICE_DISABLED;
 	return -EINVAL;
 }
 
@@ -739,6 +726,8 @@ static int __init acerhdf_register_thermal(void)
 	if (IS_ERR(cl_dev))
 		return -EINVAL;
 
+	acerhdf_zone_params.initial_mode =
+		kernelmode ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
 	thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL,
 					      &acerhdf_dev_ops,
 					      &acerhdf_zone_params, 0,
diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
index c32709badeda..4bdb6f9621c1 100644
--- a/drivers/thermal/da9062-thermal.c
+++ b/drivers/thermal/da9062-thermal.c
@@ -49,7 +49,6 @@ struct da9062_thermal {
 	struct da9062 *hw;
 	struct delayed_work work;
 	struct thermal_zone_device *zone;
-	enum thermal_device_mode mode;
 	struct mutex lock; /* protection for da9062_thermal temperature */
 	int temperature;
 	int irq;
@@ -121,14 +120,6 @@ static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static int da9062_thermal_get_mode(struct thermal_zone_device *z,
-				   enum thermal_device_mode *mode)
-{
-	struct da9062_thermal *thermal = z->devdata;
-	*mode = thermal->mode;
-	return 0;
-}
-
 static int da9062_thermal_get_trip_type(struct thermal_zone_device *z,
 					int trip,
 					enum thermal_trip_type *type)
@@ -181,7 +172,6 @@ static int da9062_thermal_get_temp(struct thermal_zone_device *z,
 
 static struct thermal_zone_device_ops da9062_thermal_ops = {
 	.get_temp	= da9062_thermal_get_temp,
-	.get_mode	= da9062_thermal_get_mode,
 	.get_trip_type	= da9062_thermal_get_trip_type,
 	.get_trip_temp	= da9062_thermal_get_trip_temp,
 };
@@ -199,6 +189,9 @@ MODULE_DEVICE_TABLE(of, da9062_compatible_reg_id_table);
 
 static int da9062_thermal_probe(struct platform_device *pdev)
 {
+	struct thermal_zone_params tzp = {
+		.initial_mode = THERMAL_DEVICE_ENABLED,
+	};
 	struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);
 	struct da9062_thermal *thermal;
 	unsigned int pp_tmp = DA9062_DEFAULT_POLLING_MS_PERIOD;
@@ -233,7 +226,6 @@ static int da9062_thermal_probe(struct platform_device *pdev)
 
 	thermal->config = match->data;
 	thermal->hw = chip;
-	thermal->mode = THERMAL_DEVICE_ENABLED;
 	thermal->dev = &pdev->dev;
 
 	INIT_DELAYED_WORK(&thermal->work, da9062_thermal_poll_on);
@@ -241,7 +233,7 @@ static int da9062_thermal_probe(struct platform_device *pdev)
 
 	thermal->zone = thermal_zone_device_register(thermal->config->name,
 					1, 0, thermal,
-					&da9062_thermal_ops, NULL, pp_tmp,
+					&da9062_thermal_ops, &tzp, pp_tmp,
 					0);
 	if (IS_ERR(thermal->zone)) {
 		dev_err(&pdev->dev, "Cannot register thermal zone device\n");
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index e761c9b42217..3e02323c938b 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -197,7 +197,6 @@ struct imx_thermal_data {
 	struct cpufreq_policy *policy;
 	struct thermal_zone_device *tz;
 	struct thermal_cooling_device *cdev;
-	enum thermal_device_mode mode;
 	struct regmap *tempmon;
 	u32 c1, c2; /* See formula in imx_init_calib() */
 	int temp_passive;
@@ -256,7 +255,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 	bool wait;
 	u32 val;
 
-	if (data->mode == THERMAL_DEVICE_ENABLED) {
+	if (tz->mode == THERMAL_DEVICE_ENABLED) {
 		/* Check if a measurement is currently in progress */
 		regmap_read(map, soc_data->temp_data, &val);
 		wait = !(val & soc_data->temp_valid_mask);
@@ -283,7 +282,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 
 	regmap_read(map, soc_data->temp_data, &val);
 
-	if (data->mode != THERMAL_DEVICE_ENABLED) {
+	if (tz->mode != THERMAL_DEVICE_ENABLED) {
 		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
 			     soc_data->measure_temp_mask);
 		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
@@ -331,16 +330,6 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 	return 0;
 }
 
-static int imx_get_mode(struct thermal_zone_device *tz,
-			enum thermal_device_mode *mode)
-{
-	struct imx_thermal_data *data = tz->devdata;
-
-	*mode = data->mode;
-
-	return 0;
-}
-
 static int imx_set_mode(struct thermal_zone_device *tz,
 			enum thermal_device_mode mode)
 {
@@ -376,9 +365,6 @@ static int imx_set_mode(struct thermal_zone_device *tz,
 		}
 	}
 
-	data->mode = mode;
-	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
 	return 0;
 }
 
@@ -467,7 +453,6 @@ static struct thermal_zone_device_ops imx_tz_ops = {
 	.bind = imx_bind,
 	.unbind = imx_unbind,
 	.get_temp = imx_get_temp,
-	.get_mode = imx_get_mode,
 	.set_mode = imx_set_mode,
 	.get_trip_type = imx_get_trip_type,
 	.get_trip_temp = imx_get_trip_temp,
@@ -691,6 +676,9 @@ static inline void imx_thermal_unregister_legacy_cooling(struct imx_thermal_data
 
 static int imx_thermal_probe(struct platform_device *pdev)
 {
+	struct thermal_zone_params tzp = {
+		.initial_mode = THERMAL_DEVICE_ENABLED,
+	};
 	struct imx_thermal_data *data;
 	struct regmap *map;
 	int measure_freq;
@@ -799,7 +787,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
 	data->tz = thermal_zone_device_register("imx_thermal_zone",
 						IMX_TRIP_NUM,
 						BIT(IMX_TRIP_PASSIVE), data,
-						&imx_tz_ops, NULL,
+						&imx_tz_ops, &tzp,
 						IMX_PASSIVE_DELAY,
 						IMX_POLLING_DELAY);
 	if (IS_ERR(data->tz)) {
@@ -831,7 +819,6 @@ static int imx_thermal_probe(struct platform_device *pdev)
 		     data->socdata->measure_temp_mask);
 
 	data->irq_enabled = true;
-	data->mode = THERMAL_DEVICE_ENABLED;
 
 	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
 			imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
@@ -885,7 +872,7 @@ static int __maybe_unused imx_thermal_suspend(struct device *dev)
 		     data->socdata->measure_temp_mask);
 	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
 		     data->socdata->power_down_mask);
-	data->mode = THERMAL_DEVICE_DISABLED;
+	data->tz->mode = THERMAL_DEVICE_DISABLED;
 	clk_disable_unprepare(data->thermal_clk);
 
 	return 0;
@@ -905,7 +892,7 @@ static int __maybe_unused imx_thermal_resume(struct device *dev)
 		     data->socdata->power_down_mask);
 	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
 		     data->socdata->measure_temp_mask);
-	data->mode = THERMAL_DEVICE_ENABLED;
+	data->tz->mode = THERMAL_DEVICE_ENABLED;
 
 	return 0;
 }
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index e802922a13cf..86a00598ed09 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -44,7 +44,6 @@ static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
 struct int3400_thermal_priv {
 	struct acpi_device *adev;
 	struct thermal_zone_device *thermal;
-	int mode;
 	int art_count;
 	struct art *arts;
 	int trt_count;
@@ -230,48 +229,29 @@ static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
 	return 0;
 }
 
-static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
-				enum thermal_device_mode *mode)
-{
-	struct int3400_thermal_priv *priv = thermal->devdata;
-
-	if (!priv)
-		return -EINVAL;
-
-	*mode = priv->mode;
-
-	return 0;
-}
-
 static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
 				enum thermal_device_mode mode)
 {
 	struct int3400_thermal_priv *priv = thermal->devdata;
-	bool enable;
 	int result = 0;
 
 	if (!priv)
 		return -EINVAL;
 
-	if (mode == THERMAL_DEVICE_ENABLED)
-		enable = true;
-	else if (mode == THERMAL_DEVICE_DISABLED)
-		enable = false;
-	else
+	if (mode != THERMAL_DEVICE_ENABLED &&
+	    mode != THERMAL_DEVICE_DISABLED)
 		return -EINVAL;
 
-	if (enable != priv->mode) {
-		priv->mode = enable;
+	if (mode != thermal->mode) {
 		result = int3400_thermal_run_osc(priv->adev->handle,
-						 priv->current_uuid_index,
-						 enable);
+						priv->current_uuid_index,
+						mode == THERMAL_DEVICE_ENABLED);
 	}
 	return result;
 }
 
 static struct thermal_zone_device_ops int3400_thermal_ops = {
 	.get_temp = int3400_thermal_get_temp,
-	.get_mode = int3400_thermal_get_mode,
 	.set_mode = int3400_thermal_set_mode,
 };
 
diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c
index d704fc104cfd..c4879b4bfbf1 100644
--- a/drivers/thermal/intel/intel_quark_dts_thermal.c
+++ b/drivers/thermal/intel/intel_quark_dts_thermal.c
@@ -103,7 +103,6 @@ struct soc_sensor_entry {
 	bool locked;
 	u32 store_ptps;
 	u32 store_dts_enable;
-	enum thermal_device_mode mode;
 	struct thermal_zone_device *tzone;
 };
 
@@ -128,7 +127,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
 		return ret;
 
 	if (out & QRK_DTS_ENABLE_BIT) {
-		aux_entry->mode = THERMAL_DEVICE_ENABLED;
+		tzd->mode = THERMAL_DEVICE_ENABLED;
 		return 0;
 	}
 
@@ -139,9 +138,9 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
 		if (ret)
 			return ret;
 
-		aux_entry->mode = THERMAL_DEVICE_ENABLED;
+		tzd->mode = THERMAL_DEVICE_ENABLED;
 	} else {
-		aux_entry->mode = THERMAL_DEVICE_DISABLED;
+		tzd->mode = THERMAL_DEVICE_DISABLED;
 		pr_info("DTS is locked. Cannot enable DTS\n");
 		ret = -EPERM;
 	}
@@ -161,7 +160,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
 		return ret;
 
 	if (!(out & QRK_DTS_ENABLE_BIT)) {
-		aux_entry->mode = THERMAL_DEVICE_DISABLED;
+		tzd->mode = THERMAL_DEVICE_DISABLED;
 		return 0;
 	}
 
@@ -173,9 +172,9 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
 		if (ret)
 			return ret;
 
-		aux_entry->mode = THERMAL_DEVICE_DISABLED;
+		tzd->mode = THERMAL_DEVICE_DISABLED;
 	} else {
-		aux_entry->mode = THERMAL_DEVICE_ENABLED;
+		tzd->mode = THERMAL_DEVICE_ENABLED;
 		pr_info("DTS is locked. Cannot disable DTS\n");
 		ret = -EPERM;
 	}
@@ -309,14 +308,6 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
 	return 0;
 }
 
-static int sys_get_mode(struct thermal_zone_device *tzd,
-				enum thermal_device_mode *mode)
-{
-	struct soc_sensor_entry *aux_entry = tzd->devdata;
-	*mode = aux_entry->mode;
-	return 0;
-}
-
 static int sys_set_mode(struct thermal_zone_device *tzd,
 				enum thermal_device_mode mode)
 {
@@ -338,7 +329,6 @@ static struct thermal_zone_device_ops tzone_ops = {
 	.get_trip_type = sys_get_trip_type,
 	.set_trip_temp = sys_set_trip_temp,
 	.get_crit_temp = sys_get_crit_temp,
-	.get_mode = sys_get_mode,
 	.set_mode = sys_set_mode,
 };
 
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 874a47d6923f..863b89546f81 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -51,7 +51,6 @@ struct __thermal_bind_params {
 
 /**
  * struct __thermal_zone - internal representation of a thermal zone
- * @mode: current thermal zone device mode (enabled/disabled)
  * @passive_delay: polling interval while passive cooling is activated
  * @polling_delay: zone polling interval
  * @slope: slope of the temperature adjustment curve
@@ -65,7 +64,6 @@ struct __thermal_bind_params {
  */
 
 struct __thermal_zone {
-	enum thermal_device_mode mode;
 	int passive_delay;
 	int polling_delay;
 	int slope;
@@ -269,23 +267,11 @@ static int of_thermal_unbind(struct thermal_zone_device *thermal,
 	return 0;
 }
 
-static int of_thermal_get_mode(struct thermal_zone_device *tz,
-			       enum thermal_device_mode *mode)
-{
-	struct __thermal_zone *data = tz->devdata;
-
-	*mode = data->mode;
-
-	return 0;
-}
-
 static int of_thermal_set_mode(struct thermal_zone_device *tz,
 			       enum thermal_device_mode mode)
 {
 	struct __thermal_zone *data = tz->devdata;
 
-	mutex_lock(&tz->lock);
-
 	if (mode == THERMAL_DEVICE_ENABLED) {
 		tz->polling_delay = data->polling_delay;
 		tz->passive_delay = data->passive_delay;
@@ -294,11 +280,6 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
 		tz->passive_delay = 0;
 	}
 
-	mutex_unlock(&tz->lock);
-
-	data->mode = mode;
-	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
 	return 0;
 }
 
@@ -393,7 +374,6 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
 }
 
 static struct thermal_zone_device_ops of_thermal_ops = {
-	.get_mode = of_thermal_get_mode,
 	.set_mode = of_thermal_set_mode,
 
 	.get_trip_type = of_thermal_get_trip_type,
@@ -553,8 +533,14 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data,
 		if (id == sensor_id) {
 			tzd = thermal_zone_of_add_sensor(child, sensor_np,
 							 data, ops);
-			if (!IS_ERR(tzd))
+			if (!IS_ERR(tzd)) {
+				mutex_lock(&tzd->lock);
 				tzd->ops->set_mode(tzd, THERMAL_DEVICE_ENABLED);
+				tzd->mode = THERMAL_DEVICE_ENABLED;
+				mutex_unlock(&tzd->lock);
+				thermal_zone_device_update(tzd,
+						THERMAL_EVENT_UNSPECIFIED);
+			}
 
 			of_node_put(child);
 			goto exit;
@@ -979,7 +965,6 @@ __init *thermal_of_build_thermal_zone(struct device_node *np)
 
 finish:
 	of_node_put(child);
-	tz->mode = THERMAL_DEVICE_DISABLED;
 
 	return tz;
 
@@ -1120,6 +1105,7 @@ int __init of_parse_thermal_zones(void)
 		/* these two are left for temperature drivers to use */
 		tzp->slope = tz->slope;
 		tzp->offset = tz->offset;
+		tzp->initial_mode = THERMAL_DEVICE_DISABLED;
 
 		zone = thermal_zone_device_register(child->name, tz->ntrips,
 						    mask, tz,
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index c06550930979..5ff98fcc0f6a 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -463,6 +463,43 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz)
 	thermal_zone_device_init(tz);
 }
 
+enum thermal_device_mode
+thermal_zone_device_get_mode(struct thermal_zone_device *tz)
+{
+	enum thermal_device_mode mode;
+
+	mutex_lock(&tz->lock);
+
+	mode = tz->mode;
+
+	mutex_unlock(&tz->lock);
+
+	return mode;
+}
+
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+				 enum thermal_device_mode mode)
+{
+	int ret = 0;
+
+	if (mode != THERMAL_DEVICE_DISABLED &&
+	    mode != THERMAL_DEVICE_ENABLED)
+		return -EINVAL;
+
+	mutex_lock(&tz->lock);
+
+	if (tz->ops->set_mode)
+		ret = tz->ops->set_mode(tz, mode);
+
+	tz->mode = mode;
+
+	mutex_unlock(&tz->lock);
+
+	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
+
+	return ret;
+}
+
 void thermal_zone_device_update(struct thermal_zone_device *tz,
 				enum thermal_notify_event event)
 {
@@ -1344,6 +1381,9 @@ thermal_zone_device_register(const char *type, int trips, int mask,
 	if (atomic_cmpxchg(&tz->need_update, 1, 0))
 		thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
 
+	if (tzp)
+		thermal_zone_device_set_mode(tz, tzp->initial_mode);
+
 	return tz;
 
 unregister:
@@ -1473,9 +1513,7 @@ static int thermal_pm_notify(struct notifier_block *nb,
 	case PM_POST_SUSPEND:
 		atomic_set(&in_suspend, 0);
 		list_for_each_entry(tz, &thermal_tz_list, node) {
-			tz_mode = THERMAL_DEVICE_ENABLED;
-			if (tz->ops->get_mode)
-				tz->ops->get_mode(tz, &tz_mode);
+			tz_mode = thermal_zone_device_get_mode(tz);
 
 			if (tz_mode == THERMAL_DEVICE_DISABLED)
 				continue;
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index c95689586e19..8e561bac3133 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -141,6 +141,22 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
 				    unsigned long new_state) {}
 #endif /* CONFIG_THERMAL_STATISTICS */
 
+enum thermal_device_mode
+thermal_zone_device_get_mode(struct thermal_zone_device *tz);
+
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+				 enum thermal_device_mode mode);
+
+static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
+{
+	return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
+}
+
+static inline int thermal_zone_device_disable(struct thermal_zone_device *tz)
+{
+	return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
+}
+
 /* device tree support */
 #ifdef CONFIG_THERMAL_OF
 int of_parse_thermal_zones(void);
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index aa99edb4dff7..cbb27b3c96d2 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -50,14 +50,8 @@ mode_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct thermal_zone_device *tz = to_thermal_zone(dev);
 	enum thermal_device_mode mode;
-	int result;
-
-	if (!tz->ops->get_mode)
-		return -EPERM;
 
-	result = tz->ops->get_mode(tz, &mode);
-	if (result)
-		return result;
+	mode = thermal_zone_device_get_mode(tz);
 
 	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
 		       : "disabled");
@@ -74,9 +68,9 @@ mode_store(struct device *dev, struct device_attribute *attr,
 		return -EPERM;
 
 	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
-		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
+		result = thermal_zone_device_enable(tz);
 	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
-		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
+		result = thermal_zone_device_disable(tz);
 	else
 		result = -EINVAL;
 
@@ -428,30 +422,13 @@ static struct attribute_group thermal_zone_attribute_group = {
 	.attrs = thermal_zone_dev_attrs,
 };
 
-/* We expose mode only if .get_mode is present */
 static struct attribute *thermal_zone_mode_attrs[] = {
 	&dev_attr_mode.attr,
 	NULL,
 };
 
-static umode_t thermal_zone_mode_is_visible(struct kobject *kobj,
-					    struct attribute *attr,
-					    int attrno)
-{
-	struct device *dev = container_of(kobj, struct device, kobj);
-	struct thermal_zone_device *tz;
-
-	tz = container_of(dev, struct thermal_zone_device, device);
-
-	if (tz->ops->get_mode)
-		return attr->mode;
-
-	return 0;
-}
-
 static struct attribute_group thermal_zone_mode_attribute_group = {
 	.attrs = thermal_zone_mode_attrs,
-	.is_visible = thermal_zone_mode_is_visible,
 };
 
 /* We expose passive only if passive trips are present */
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 216185bb3014..da4141697e2e 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -76,8 +76,6 @@ struct thermal_zone_device_ops {
 		       struct thermal_cooling_device *);
 	int (*get_temp) (struct thermal_zone_device *, int *);
 	int (*set_trips) (struct thermal_zone_device *, int, int);
-	int (*get_mode) (struct thermal_zone_device *,
-			 enum thermal_device_mode *);
 	int (*set_mode) (struct thermal_zone_device *,
 		enum thermal_device_mode);
 	int (*get_trip_type) (struct thermal_zone_device *, int,
@@ -128,6 +126,7 @@ struct thermal_cooling_device {
  * @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
  * @trips:	number of trip points the thermal zone supports
  * @trips_disabled;	bitmap for disabled trips
@@ -170,6 +169,7 @@ struct thermal_zone_device {
 	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 trips;
 	unsigned long trips_disabled;	/* bitmap for disabled trips */
@@ -264,6 +264,9 @@ struct thermal_zone_params {
 	int num_tbps;	/* Number of tbp entries */
 	struct thermal_bind_params *tbp;
 
+	/* Initial mode of this thermal zone device */
+	enum thermal_device_mode initial_mode;
+
 	/*
 	 * Sustainable power (heat) that this thermal zone can dissipate in
 	 * mW
-- 
2.17.1


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