Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

Pull thermal management updates from Zhang Rui:
 "We have a lot of SOC changes and a few thermal core fixes this time.

  The biggest change is about exynos thermal driver restructure.  The
  patch set adds TMU (Thermal management Unit) driver support for
  exynos5440 platform.  There are 3 instances of the TMU controllers so
  necessary cleanup/re-structure is done to handle multiple thermal
  zone.

  The next biggest change is the introduction of the imx thermal driver.
  It adds the imx thermal support using Temperature Monitor (TEMPMON)
  block found on some Freescale i.MX SoCs.  The driver uses syscon
  regmap interface to access TEMPMON control registers and calibration
  data, and supports cpufreq as the cooling device.

  Highlights:

   - restructure exynos thermal driver.

   - introduce new imx thermal driver.

   - fix a bug in thermal core, which powers on the fans unexpectedly
     after resume from suspend"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (46 commits)
  drivers: thermal: add check when unregistering cpu cooling
  thermal: thermal_core: allow binding with limits on bind_params
  drivers: thermal: make usage of CONFIG_THERMAL_HWMON optional
  drivers: thermal: parent virtual hwmon with thermal zone
  thermal: hwmon: move hwmon support to single file
  thermal: exynos: Clean up non-DT remnants
  thermal: exynos: Fix potential NULL pointer dereference
  thermal: exynos: Fix typos in Kconfig
  thermal: ti-soc-thermal: Ensure to compute thermal trend
  thermal: ti-soc-thermal: Set the bandgap mask counter delay value
  thermal: ti-soc-thermal: Initialize counter_delay field for TI DRA752 sensors
  thermal: step_wise: return instance->target by default
  thermal: step_wise: cdev only needs update on a new target state
  Thermal/cpu_cooling: Return directly for the cpu out of allowed_cpus in the cpufreq_thermal_notifier()
  thermal: exynos_tmu: fix wrong error check for mapped memory
  thermal: imx: implement thermal alarm interrupt handling
  thermal: imx: dynamic passive and SoC specific critical trip points
  Documentation: thermal: Explain the exynos thermal driver model
  ARM: dts: thermal: exynos: Add documentation for Exynos SoC thermal bindings
  thermal: exynos: Support for TMU regulator defined at device tree
  ...

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

+* Exynos Thermal Management Unit (TMU)
+
+** Required properties:
+
+- compatible : One of the following:
+	       "samsung,exynos4412-tmu"
+	       "samsung,exynos4210-tmu"
+	       "samsung,exynos5250-tmu"
+	       "samsung,exynos5440-tmu"
+- interrupt-parent : The phandle for the interrupt controller
+- reg : Address range of the thermal registers. For soc's which has multiple
+	instances of TMU and some registers are shared across all TMU's like
+	interrupt related then 2 set of register has to supplied. First set
+	belongs	to each instance of TMU and second set belongs to common TMU
+	registers.
+- interrupts : Should contain interrupt for thermal system
+- clocks : The main clock for TMU device
+- clock-names : Thermal system clock name
+- vtmu-supply: This entry is optional and provides the regulator node supplying
+		voltage to TMU. If needed this entry can be placed inside
+		board/platform specific dts file.
+
+Example 1):
+
+	tmu@100C0000 {
+		compatible = "samsung,exynos4412-tmu";
+		interrupt-parent = <&combiner>;
+		reg = <0x100C0000 0x100>;
+		interrupts = <2 4>;
+		clocks = <&clock 383>;
+		clock-names = "tmu_apbif";
+		status = "disabled";
+		vtmu-supply = <&tmu_regulator_node>;
+	};
+
+Example 2):
+
+	tmuctrl_0: tmuctrl@160118 {
+		compatible = "samsung,exynos5440-tmu";
+		reg = <0x160118 0x230>, <0x160368 0x10>;
+		interrupts = <0 58 0>;
+		clocks = <&clock 21>;
+		clock-names = "tmu_apbif";
+	};
+
+Note: For multi-instance tmu each instance should have an alias correctly
+numbered in "aliases" node.
+
+Example:
+
+aliases {
+	tmuctrl0 = &tmuctrl_0;
+	tmuctrl1 = &tmuctrl_1;
+	tmuctrl2 = &tmuctrl_2;
+};

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

+* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
+
+Required properties:
+- compatible : "fsl,imx6q-thermal"
+- fsl,tempmon : phandle pointer to system controller that contains TEMPMON
+  control registers, e.g. ANATOP on imx6q.
+- fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON
+  calibration data, e.g. OCOTP on imx6q.  The details about calibration data
+  can be found in SoC Reference Manual.
+
+Example:
+
+tempmon {
+	compatible = "fsl,imx6q-tempmon";
+	fsl,tempmon = <&anatop>;
+	fsl,tempmon-data = <&ocotp>;
+};

Documentation/thermal/exynos_thermal

-Kernel driver exynos4_tmu
+Kernel driver exynos_tmu
 =================
 
 Supported chips:
-* ARM SAMSUNG EXYNOS4 series of SoC
-  Prefix: 'exynos4-tmu'
+* ARM SAMSUNG EXYNOS4, EXYNOS5 series of SoC
   Datasheet: Not publicly available
 
 Authors: Donggeun Kim <dg77.kim@samsung.com>
+Authors: Amit Daniel <amit.daniel@samsung.com>
 
-Description
------------
+TMU controller Description:
+---------------------------
 
-This driver allows to read temperature inside SAMSUNG EXYNOS4 series of SoC.
+This driver allows to read temperature inside SAMSUNG EXYNOS4/5 series of SoC.
 
 The chip only exposes the measured 8-bit temperature code value
 through a register.
@@ -34,9 +34,9 @@ The three equations are:
   TI2: Trimming info for 85 degree Celsius (stored at TRIMINFO register)
        Temperature code measured at 85 degree Celsius which is unchanged
 
-TMU(Thermal Management Unit) in EXYNOS4 generates interrupt
+TMU(Thermal Management Unit) in EXYNOS4/5 generates interrupt
 when temperature exceeds pre-defined levels.
-The maximum number of configurable threshold is four.
+The maximum number of configurable threshold is five.
 The threshold levels are defined as follows:
   Level_0: current temperature > trigger_level_0 + threshold
   Level_1: current temperature > trigger_level_1 + threshold
@@ -47,6 +47,31 @@ The threshold levels are defined as follows:
   through the corresponding registers.
 
 When an interrupt occurs, this driver notify kernel thermal framework
-with the function exynos4_report_trigger.
+with the function exynos_report_trigger.
 Although an interrupt condition for level_0 can be set,
 it can be used to synchronize the cooling action.
+
+TMU driver description:
+-----------------------
+
+The exynos thermal driver is structured as,
+
+					Kernel Core thermal framework
+				(thermal_core.c, step_wise.c, cpu_cooling.c)
+								^
+								|
+								|
+TMU configuration data -------> TMU Driver  <------> Exynos Core thermal wrapper
+(exynos_tmu_data.c)	      (exynos_tmu.c)	   (exynos_thermal_common.c)
+(exynos_tmu_data.h)	      (exynos_tmu.h)	   (exynos_thermal_common.h)
+
+a) TMU configuration data: This consist of TMU register offsets/bitfields
+		described through structure exynos_tmu_registers. Also several
+		other platform data (struct exynos_tmu_platform_data) members
+		are used to configure the TMU.
+b) TMU driver: This component initialises the TMU controller and sets different
+		thresholds. It invokes core thermal implementation with the call
+		exynos_report_trigger.
+c) Exynos Core thermal wrapper: This provides 3 wrapper function to use the
+		Kernel core thermal framework. They are exynos_unregister_thermal,
+		exynos_register_thermal and exynos_report_trigger.

Documentation/thermal/sysfs-api.txt

@@ -134,6 +134,13 @@ temperature) and throttle appropriate devices.
                this thermal zone and cdev, for a particular trip point.
                If nth bit is set, then the cdev and thermal zone are bound
                for trip point n.
+    .limits: This is an array of cooling state limits. Must have exactly
+         2 * thermal_zone.number_of_trip_points. It is an array consisting
+         of tuples <lower-state upper-state> of state limits. Each trip
+         will be associated with one state limit tuple when binding.
+         A NULL pointer means <THERMAL_NO_LIMITS THERMAL_NO_LIMITS>
+         on all trips. These limits are used when binding a cdev to a
+         trip point.
     .match: This call back returns success(0) if the 'tz and cdev' need to
 	    be bound, as per platform data.
 1.4.2 struct thermal_zone_params
@@ -142,6 +149,11 @@ temperature) and throttle appropriate devices.
     This is an optional feature where some platforms can choose not to
     provide this data.
     .governor_name: Name of the thermal governor used for this zone
+    .no_hwmon: a boolean to indicate if the thermal to hwmon sysfs interface
+               is required. when no_hwmon == false, a hwmon sysfs interface
+               will be created. when no_hwmon == true, nothing will be done.
+               In case the thermal_zone_params is NULL, the hwmon interface
+               will be created (for backward compatibility).
     .num_tbps: Number of thermal_bind_params entries for this zone
     .tbp: thermal_bind_params entries
 

drivers/thermal/Kconfig

@@ -17,8 +17,17 @@ if THERMAL
 
 config THERMAL_HWMON
 	bool
+	prompt "Expose thermal sensors as hwmon device"
 	depends on HWMON=y || HWMON=THERMAL
 	default y
+	help
+	  In case a sensor is registered with the thermal
+	  framework, this option will also register it
+	  as a hwmon. The sensor will then have the common
+	  hwmon sysfs interface.
+
+	  Say 'Y' here if you want all thermal sensors to
+	  have hwmon sysfs interface too.
 
 choice
 	prompt "Default Thermal governor"
@@ -91,6 +100,17 @@ config THERMAL_EMULATION
 	  because userland can easily disable the thermal policy by simply
 	  flooding this sysfs node with low temperature values.
 
+config IMX_THERMAL
+	tristate "Temperature sensor driver for Freescale i.MX SoCs"
+	depends on CPU_THERMAL
+	depends on MFD_SYSCON
+	depends on OF
+	help
+	  Support for Temperature Monitor (TEMPMON) found on Freescale i.MX SoCs.
+	  It supports one critical trip point and one passive trip point.  The
+	  cpufreq is used as the cooling device to throttle CPUs when the
+	  passive trip is crossed.
+
 config SPEAR_THERMAL
 	bool "SPEAr thermal sensor driver"
 	depends on PLAT_SPEAR
@@ -114,14 +134,6 @@ config KIRKWOOD_THERMAL
 	  Support for the Kirkwood thermal sensor driver into the Linux thermal
 	  framework. Only kirkwood 88F6282 and 88F6283 have this sensor.
 
-config EXYNOS_THERMAL
-	tristate "Temperature sensor on Samsung EXYNOS"
-	depends on (ARCH_EXYNOS4 || ARCH_EXYNOS5)
-	depends on CPU_THERMAL
-	help
-	  If you say yes here you get support for TMU (Thermal Management
-	  Unit) on SAMSUNG EXYNOS series of SoC.
-
 config DOVE_THERMAL
 	tristate "Temperature sensor on Marvell Dove SoCs"
 	depends on ARCH_DOVE
@@ -184,4 +196,9 @@ menu "Texas Instruments thermal drivers"
 source "drivers/thermal/ti-soc-thermal/Kconfig"
 endmenu
 
+menu "Samsung thermal drivers"
+depends on PLAT_SAMSUNG
+source "drivers/thermal/samsung/Kconfig"
+endmenu
+
 endif

drivers/thermal/Makefile

@@ -5,6 +5,9 @@
 obj-$(CONFIG_THERMAL)		+= thermal_sys.o
 thermal_sys-y			+= thermal_core.o
 
+# interface to/from other layers providing sensors
+thermal_sys-$(CONFIG_THERMAL_HWMON)		+= thermal_hwmon.o
+
 # governors
 thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
 thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
@@ -17,10 +20,11 @@ thermal_sys-$(CONFIG_CPU_THERMAL)	+= cpu_cooling.o
 obj-$(CONFIG_SPEAR_THERMAL)	+= spear_thermal.o
 obj-$(CONFIG_RCAR_THERMAL)	+= rcar_thermal.o
 obj-$(CONFIG_KIRKWOOD_THERMAL)  += kirkwood_thermal.o
-obj-$(CONFIG_EXYNOS_THERMAL)	+= exynos_thermal.o
+obj-y				+= samsung/
 obj-$(CONFIG_DOVE_THERMAL)  	+= dove_thermal.o
 obj-$(CONFIG_DB8500_THERMAL)	+= db8500_thermal.o
 obj-$(CONFIG_ARMADA_THERMAL)	+= armada_thermal.o
+obj-$(CONFIG_IMX_THERMAL)	+= imx_thermal.o
 obj-$(CONFIG_DB8500_CPUFREQ_COOLING)	+= db8500_cpufreq_cooling.o
 obj-$(CONFIG_INTEL_POWERCLAMP)	+= intel_powerclamp.o
 obj-$(CONFIG_X86_PKG_TEMP_THERMAL)	+= x86_pkg_temp_thermal.o

drivers/thermal/cpu_cooling.c

@@ -322,6 +322,8 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb,
 
 	if (cpumask_test_cpu(policy->cpu, &notify_device->allowed_cpus))
 		max_freq = notify_device->cpufreq_val;
+	else
+		return 0;
 
 	/* Never exceed user_policy.max */
 	if (max_freq > policy->user_policy.max)
@@ -496,8 +498,12 @@ EXPORT_SYMBOL_GPL(cpufreq_cooling_register);
  */
 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
 {
-	struct cpufreq_cooling_device *cpufreq_dev = cdev->devdata;
+	struct cpufreq_cooling_device *cpufreq_dev;
+
+	if (!cdev)
+		return;
 
+	cpufreq_dev = cdev->devdata;
 	mutex_lock(&cooling_cpufreq_lock);
 	cpufreq_dev_count--;
 

drivers/thermal/samsung/Kconfig

+config EXYNOS_THERMAL
+	tristate "Exynos thermal management unit driver"
+	depends on ARCH_HAS_BANDGAP && OF
+	help
+	  If you say yes here you get support for the TMU (Thermal Management
+	  Unit) driver for SAMSUNG EXYNOS series of SoCs. This driver initialises
+	  the TMU, reports temperature and handles cooling action if defined.
+	  This driver uses the Exynos core thermal APIs and TMU configuration
+	  data from the supported SoCs.
+
+config EXYNOS_THERMAL_CORE
+	bool "Core thermal framework support for EXYNOS SOCs"
+	depends on EXYNOS_THERMAL
+	help
+	  If you say yes here you get support for EXYNOS TMU
+	  (Thermal Management Unit) common registration/unregistration
+	  functions to the core thermal layer and also to use the generic
+	  CPU cooling APIs.

drivers/thermal/samsung/Makefile

+#
+# Samsung thermal specific Makefile
+#
+obj-$(CONFIG_EXYNOS_THERMAL)			+= exynos_thermal.o
+exynos_thermal-y				:= exynos_tmu.o
+exynos_thermal-y				+= exynos_tmu_data.o
+exynos_thermal-$(CONFIG_EXYNOS_THERMAL_CORE)	+= exynos_thermal_common.o

include/linux/platform_data/exynos_thermal.h → drivers/thermal/samsung/exynos_thermal_common.h

 /*
- * exynos_thermal.h - Samsung EXYNOS TMU (Thermal Management Unit)
+ * exynos_thermal_common.h - Samsung EXYNOS common header file
  *
- *  Copyright (C) 2011 Samsung Electronics
- *  Donggeun Kim <dg77.kim@samsung.com>
+ *  Copyright (C) 2013 Samsung Electronics
+ *  Amit Daniel Kachhap <amit.daniel@samsung.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
@@ -17,22 +17,38 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
  */
 
-#ifndef _LINUX_EXYNOS_THERMAL_H
-#define _LINUX_EXYNOS_THERMAL_H
-#include <linux/cpu_cooling.h>
+#ifndef _EXYNOS_THERMAL_COMMON_H
+#define _EXYNOS_THERMAL_COMMON_H
 
-enum calibration_type {
-	TYPE_ONE_POINT_TRIMMING,
-	TYPE_TWO_POINT_TRIMMING,
-	TYPE_NONE,
-};
+/* In-kernel thermal framework related macros & definations */
+#define SENSOR_NAME_LEN	16
+#define MAX_TRIP_COUNT	8
+#define MAX_COOLING_DEVICE 4
+#define MAX_THRESHOLD_LEVS 5
+
+#define ACTIVE_INTERVAL 500
+#define IDLE_INTERVAL 10000
+#define MCELSIUS	1000
+
+/* CPU Zone information */
+#define PANIC_ZONE      4
+#define WARN_ZONE       3
+#define MONITOR_ZONE    2
+#define SAFE_ZONE       1
 
-enum soc_type {
-	SOC_ARCH_EXYNOS4210 = 1,
-	SOC_ARCH_EXYNOS,
+#define GET_ZONE(trip) (trip + 2)
+#define GET_TRIP(zone) (zone - 2)
+
+enum trigger_type {
+	THROTTLE_ACTIVE = 1,
+	THROTTLE_PASSIVE,
+	SW_TRIP,
+	HW_TRIP,
 };
+
 /**
  * struct freq_clip_table
  * @freq_clip_max: maximum frequency allowed for this cooling state.
@@ -49,71 +65,43 @@ struct freq_clip_table {
 	const struct cpumask *mask_val;
 };
 
-/**
- * struct exynos_tmu_platform_data
- * @threshold: basic temperature for generating interrupt
- *	       25 <= threshold <= 125 [unit: degree Celsius]
- * @threshold_falling: differntial value for setting threshold
- *		       of temperature falling interrupt.
- * @trigger_levels: array for each interrupt levels
- *	[unit: degree Celsius]
- *	0: temperature for trigger_level0 interrupt
- *	   condition for trigger_level0 interrupt:
- *		current temperature > threshold + trigger_levels[0]
- *	1: temperature for trigger_level1 interrupt
- *	   condition for trigger_level1 interrupt:
- *		current temperature > threshold + trigger_levels[1]
- *	2: temperature for trigger_level2 interrupt
- *	   condition for trigger_level2 interrupt:
- *		current temperature > threshold + trigger_levels[2]
- *	3: temperature for trigger_level3 interrupt
- *	   condition for trigger_level3 interrupt:
- *		current temperature > threshold + trigger_levels[3]
- * @trigger_level0_en:
- *	1 = enable trigger_level0 interrupt,
- *	0 = disable trigger_level0 interrupt
- * @trigger_level1_en:
- *	1 = enable trigger_level1 interrupt,
- *	0 = disable trigger_level1 interrupt
- * @trigger_level2_en:
- *	1 = enable trigger_level2 interrupt,
- *	0 = disable trigger_level2 interrupt
- * @trigger_level3_en:
- *	1 = enable trigger_level3 interrupt,
- *	0 = disable trigger_level3 interrupt
- * @gain: gain of amplifier in the positive-TC generator block
- *	0 <= gain <= 15
- * @reference_voltage: reference voltage of amplifier
- *	in the positive-TC generator block
- *	0 <= reference_voltage <= 31
- * @noise_cancel_mode: noise cancellation mode
- *	000, 100, 101, 110 and 111 can be different modes
- * @type: determines the type of SOC
- * @efuse_value: platform defined fuse value
- * @cal_type: calibration type for temperature
- * @freq_clip_table: Table representing frequency reduction percentage.
- * @freq_tab_count: Count of the above table as frequency reduction may
- *	applicable to only some of the trigger levels.
- *
- * This structure is required for configuration of exynos_tmu driver.
- */
-struct exynos_tmu_platform_data {
-	u8 threshold;
-	u8 threshold_falling;
-	u8 trigger_levels[4];
-	bool trigger_level0_en;
-	bool trigger_level1_en;
-	bool trigger_level2_en;
-	bool trigger_level3_en;
+struct	thermal_trip_point_conf {
+	int trip_val[MAX_TRIP_COUNT];
+	int trip_type[MAX_TRIP_COUNT];
+	int trip_count;
+	unsigned char trigger_falling;
+};
 
-	u8 gain;
-	u8 reference_voltage;
-	u8 noise_cancel_mode;
-	u32 efuse_value;
+struct	thermal_cooling_conf {
+	struct freq_clip_table freq_data[MAX_TRIP_COUNT];
+	int freq_clip_count;
+};
 
-	enum calibration_type cal_type;
-	enum soc_type type;
-	struct freq_clip_table freq_tab[4];
-	unsigned int freq_tab_count;
+struct thermal_sensor_conf {
+	char name[SENSOR_NAME_LEN];
+	int (*read_temperature)(void *data);
+	int (*write_emul_temp)(void *drv_data, unsigned long temp);
+	struct thermal_trip_point_conf trip_data;
+	struct thermal_cooling_conf cooling_data;
+	void *driver_data;
+	void *pzone_data;
+	struct device *dev;
 };
-#endif /* _LINUX_EXYNOS_THERMAL_H */
+
+/*Functions used exynos based thermal sensor driver*/
+#ifdef CONFIG_EXYNOS_THERMAL_CORE
+void exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf);
+int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf);
+void exynos_report_trigger(struct thermal_sensor_conf *sensor_conf);
+#else
+static inline void
+exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf) { return; }
+
+static inline int
+exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) { return 0; }
+
+static inline void
+exynos_report_trigger(struct thermal_sensor_conf *sensor_conf) { return; }
+
+#endif /* CONFIG_EXYNOS_THERMAL_CORE */
+#endif /* _EXYNOS_THERMAL_COMMON_H */

drivers/thermal/samsung/exynos_tmu_data.c

+/*
+ * exynos_tmu_data.c - Samsung EXYNOS tmu data file
+ *
+ *  Copyright (C) 2013 Samsung Electronics
+ *  Amit Daniel Kachhap <amit.daniel@samsung.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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "exynos_thermal_common.h"
+#include "exynos_tmu.h"
+#include "exynos_tmu_data.h"
+
+#if defined(CONFIG_CPU_EXYNOS4210)
+static const struct exynos_tmu_registers exynos4210_tmu_registers = {
+	.triminfo_data = EXYNOS_TMU_REG_TRIMINFO,
+	.triminfo_25_shift = EXYNOS_TRIMINFO_25_SHIFT,
+	.triminfo_85_shift = EXYNOS_TRIMINFO_85_SHIFT,
+	.tmu_ctrl = EXYNOS_TMU_REG_CONTROL,
+	.buf_vref_sel_shift = EXYNOS_TMU_REF_VOLTAGE_SHIFT,
+	.buf_vref_sel_mask = EXYNOS_TMU_REF_VOLTAGE_MASK,
+	.buf_slope_sel_shift = EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT,
+	.buf_slope_sel_mask = EXYNOS_TMU_BUF_SLOPE_SEL_MASK,
+	.core_en_shift = EXYNOS_TMU_CORE_EN_SHIFT,
+	.tmu_status = EXYNOS_TMU_REG_STATUS,
+	.tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
+	.threshold_temp = EXYNOS4210_TMU_REG_THRESHOLD_TEMP,
+	.threshold_th0 = EXYNOS4210_TMU_REG_TRIG_LEVEL0,
+	.tmu_inten = EXYNOS_TMU_REG_INTEN,
+	.inten_rise_mask = EXYNOS4210_TMU_TRIG_LEVEL_MASK,
+	.inten_rise0_shift = EXYNOS_TMU_INTEN_RISE0_SHIFT,
+	.inten_rise1_shift = EXYNOS_TMU_INTEN_RISE1_SHIFT,
+	.inten_rise2_shift = EXYNOS_TMU_INTEN_RISE2_SHIFT,
+	.inten_rise3_shift = EXYNOS_TMU_INTEN_RISE3_SHIFT,
+	.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
+	.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
+};
+
+struct exynos_tmu_init_data const exynos4210_default_tmu_data = {
+	.tmu_data = {
+		{
+		.threshold = 80,
+		.trigger_levels[0] = 5,
+		.trigger_levels[1] = 20,
+		.trigger_levels[2] = 30,
+		.trigger_enable[0] = true,
+		.trigger_enable[1] = true,
+		.trigger_enable[2] = true,
+		.trigger_enable[3] = false,
+		.trigger_type[0] = THROTTLE_ACTIVE,
+		.trigger_type[1] = THROTTLE_ACTIVE,
+		.trigger_type[2] = SW_TRIP,
+		.max_trigger_level = 4,
+		.gain = 15,
+		.reference_voltage = 7,
+		.cal_type = TYPE_ONE_POINT_TRIMMING,
+		.min_efuse_value = 40,
+		.max_efuse_value = 100,
+		.first_point_trim = 25,
+		.second_point_trim = 85,
+		.default_temp_offset = 50,
+		.freq_tab[0] = {
+			.freq_clip_max = 800 * 1000,
+			.temp_level = 85,
+			},
+		.freq_tab[1] = {
+			.freq_clip_max = 200 * 1000,
+			.temp_level = 100,
+		},
+		.freq_tab_count = 2,
+		.type = SOC_ARCH_EXYNOS4210,
+		.registers = &exynos4210_tmu_registers,
+		.features = TMU_SUPPORT_READY_STATUS,
+		},
+	},
+	.tmu_count = 1,
+};
+#endif
+
+#if defined(CONFIG_SOC_EXYNOS5250) || defined(CONFIG_SOC_EXYNOS4412)
+static const struct exynos_tmu_registers exynos5250_tmu_registers = {
+	.triminfo_data = EXYNOS_TMU_REG_TRIMINFO,
+	.triminfo_25_shift = EXYNOS_TRIMINFO_25_SHIFT,
+	.triminfo_85_shift = EXYNOS_TRIMINFO_85_SHIFT,
+	.triminfo_ctrl = EXYNOS_TMU_TRIMINFO_CON,
+	.triminfo_reload_shift = EXYNOS_TRIMINFO_RELOAD_SHIFT,
+	.tmu_ctrl = EXYNOS_TMU_REG_CONTROL,
+	.buf_vref_sel_shift = EXYNOS_TMU_REF_VOLTAGE_SHIFT,
+	.buf_vref_sel_mask = EXYNOS_TMU_REF_VOLTAGE_MASK,
+	.therm_trip_mode_shift = EXYNOS_TMU_TRIP_MODE_SHIFT,
+	.therm_trip_mode_mask = EXYNOS_TMU_TRIP_MODE_MASK,
+	.therm_trip_en_shift = EXYNOS_TMU_THERM_TRIP_EN_SHIFT,
+	.buf_slope_sel_shift = EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT,
+	.buf_slope_sel_mask = EXYNOS_TMU_BUF_SLOPE_SEL_MASK,
+	.core_en_shift = EXYNOS_TMU_CORE_EN_SHIFT,
+	.tmu_status = EXYNOS_TMU_REG_STATUS,
+	.tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
+	.threshold_th0 = EXYNOS_THD_TEMP_RISE,
+	.threshold_th1 = EXYNOS_THD_TEMP_FALL,
+	.tmu_inten = EXYNOS_TMU_REG_INTEN,
+	.inten_rise_mask = EXYNOS_TMU_RISE_INT_MASK,
+	.inten_rise_shift = EXYNOS_TMU_RISE_INT_SHIFT,
+	.inten_fall_mask = EXYNOS_TMU_FALL_INT_MASK,
+	.inten_fall_shift = EXYNOS_TMU_FALL_INT_SHIFT,
+	.inten_rise0_shift = EXYNOS_TMU_INTEN_RISE0_SHIFT,
+	.inten_rise1_shift = EXYNOS_TMU_INTEN_RISE1_SHIFT,
+	.inten_rise2_shift = EXYNOS_TMU_INTEN_RISE2_SHIFT,
+	.inten_rise3_shift = EXYNOS_TMU_INTEN_RISE3_SHIFT,
+	.inten_fall0_shift = EXYNOS_TMU_INTEN_FALL0_SHIFT,
+	.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
+	.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
+	.emul_con = EXYNOS_EMUL_CON,
+	.emul_temp_shift = EXYNOS_EMUL_DATA_SHIFT,
+	.emul_time_shift = EXYNOS_EMUL_TIME_SHIFT,
+	.emul_time_mask = EXYNOS_EMUL_TIME_MASK,
+};
+
+#define EXYNOS5250_TMU_DATA \
+	.threshold_falling = 10, \
+	.trigger_levels[0] = 85, \
+	.trigger_levels[1] = 103, \
+	.trigger_levels[2] = 110, \
+	.trigger_levels[3] = 120, \
+	.trigger_enable[0] = true, \
+	.trigger_enable[1] = true, \
+	.trigger_enable[2] = true, \
+	.trigger_enable[3] = false, \
+	.trigger_type[0] = THROTTLE_ACTIVE, \
+	.trigger_type[1] = THROTTLE_ACTIVE, \
+	.trigger_type[2] = SW_TRIP, \
+	.trigger_type[3] = HW_TRIP, \
+	.max_trigger_level = 4, \
+	.gain = 8, \
+	.reference_voltage = 16, \
+	.noise_cancel_mode = 4, \
+	.cal_type = TYPE_ONE_POINT_TRIMMING, \
+	.efuse_value = 55, \
+	.min_efuse_value = 40, \
+	.max_efuse_value = 100, \
+	.first_point_trim = 25, \
+	.second_point_trim = 85, \
+	.default_temp_offset = 50, \
+	.freq_tab[0] = { \
+		.freq_clip_max = 800 * 1000, \
+		.temp_level = 85, \
+	}, \
+	.freq_tab[1] = { \
+		.freq_clip_max = 200 * 1000, \
+		.temp_level = 103, \
+	}, \
+	.freq_tab_count = 2, \
+	.type = SOC_ARCH_EXYNOS, \
+	.registers = &exynos5250_tmu_registers, \
+	.features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_TRIM_RELOAD | \
+			TMU_SUPPORT_FALLING_TRIP | TMU_SUPPORT_READY_STATUS | \
+			TMU_SUPPORT_EMUL_TIME)
+
+struct exynos_tmu_init_data const exynos5250_default_tmu_data = {
+	.tmu_data = {
+		{ EXYNOS5250_TMU_DATA },
+	},
+	.tmu_count = 1,
+};
+#endif
+
+#if defined(CONFIG_SOC_EXYNOS5440)
+static const struct exynos_tmu_registers exynos5440_tmu_registers = {
+	.triminfo_data = EXYNOS5440_TMU_S0_7_TRIM,
+	.triminfo_25_shift = EXYNOS_TRIMINFO_25_SHIFT,
+	.triminfo_85_shift = EXYNOS_TRIMINFO_85_SHIFT,
+	.tmu_ctrl = EXYNOS5440_TMU_S0_7_CTRL,
+	.buf_vref_sel_shift = EXYNOS_TMU_REF_VOLTAGE_SHIFT,
+	.buf_vref_sel_mask = EXYNOS_TMU_REF_VOLTAGE_MASK,
+	.therm_trip_mode_shift = EXYNOS_TMU_TRIP_MODE_SHIFT,
+	.therm_trip_mode_mask = EXYNOS_TMU_TRIP_MODE_MASK,
+	.therm_trip_en_shift = EXYNOS_TMU_THERM_TRIP_EN_SHIFT,
+	.buf_slope_sel_shift = EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT,
+	.buf_slope_sel_mask = EXYNOS_TMU_BUF_SLOPE_SEL_MASK,
+	.calib_mode_shift = EXYNOS_TMU_CALIB_MODE_SHIFT,
+	.calib_mode_mask = EXYNOS_TMU_CALIB_MODE_MASK,
+	.core_en_shift = EXYNOS_TMU_CORE_EN_SHIFT,
+	.tmu_status = EXYNOS5440_TMU_S0_7_STATUS,
+	.tmu_cur_temp = EXYNOS5440_TMU_S0_7_TEMP,
+	.threshold_th0 = EXYNOS5440_TMU_S0_7_TH0,
+	.threshold_th1 = EXYNOS5440_TMU_S0_7_TH1,
+	.threshold_th2 = EXYNOS5440_TMU_S0_7_TH2,
+	.threshold_th3_l0_shift = EXYNOS5440_TMU_TH_RISE4_SHIFT,
+	.tmu_inten = EXYNOS5440_TMU_S0_7_IRQEN,
+	.inten_rise_mask = EXYNOS5440_TMU_RISE_INT_MASK,
+	.inten_rise_shift = EXYNOS5440_TMU_RISE_INT_SHIFT,
+	.inten_fall_mask = EXYNOS5440_TMU_FALL_INT_MASK,
+	.inten_fall_shift = EXYNOS5440_TMU_FALL_INT_SHIFT,
+	.inten_rise0_shift = EXYNOS5440_TMU_INTEN_RISE0_SHIFT,
+	.inten_rise1_shift = EXYNOS5440_TMU_INTEN_RISE1_SHIFT,
+	.inten_rise2_shift = EXYNOS5440_TMU_INTEN_RISE2_SHIFT,
+	.inten_rise3_shift = EXYNOS5440_TMU_INTEN_RISE3_SHIFT,
+	.inten_fall0_shift = EXYNOS5440_TMU_INTEN_FALL0_SHIFT,
+	.tmu_intstat = EXYNOS5440_TMU_S0_7_IRQ,
+	.tmu_intclear = EXYNOS5440_TMU_S0_7_IRQ,
+	.tmu_irqstatus = EXYNOS5440_TMU_IRQ_STATUS,
+	.emul_con = EXYNOS5440_TMU_S0_7_DEBUG,
+	.emul_temp_shift = EXYNOS_EMUL_DATA_SHIFT,
+	.tmu_pmin = EXYNOS5440_TMU_PMIN,
+};
+
+#define EXYNOS5440_TMU_DATA \
+	.trigger_levels[0] = 100, \
+	.trigger_levels[4] = 105, \
+	.trigger_enable[0] = 1, \
+	.trigger_type[0] = SW_TRIP, \
+	.trigger_type[4] = HW_TRIP, \
+	.max_trigger_level = 5, \
+	.gain = 5, \
+	.reference_voltage = 16, \
+	.noise_cancel_mode = 4, \
+	.cal_type = TYPE_ONE_POINT_TRIMMING, \
+	.cal_mode = 0, \
+	.efuse_value = 0x5b2d, \
+	.min_efuse_value = 16, \
+	.max_efuse_value = 76, \
+	.first_point_trim = 25, \
+	.second_point_trim = 70, \
+	.default_temp_offset = 25, \
+	.type = SOC_ARCH_EXYNOS5440, \
+	.registers = &exynos5440_tmu_registers, \
+	.features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_FALLING_TRIP | \
+			TMU_SUPPORT_MULTI_INST | TMU_SUPPORT_SHARED_MEMORY),
+
+struct exynos_tmu_init_data const exynos5440_default_tmu_data = {
+	.tmu_data = {
+		{ EXYNOS5440_TMU_DATA } ,
+		{ EXYNOS5440_TMU_DATA } ,
+		{ EXYNOS5440_TMU_DATA } ,
+	},
+	.tmu_count = 3,
+};
+#endif

drivers/thermal/samsung/exynos_tmu_data.h

+/*
+ * exynos_tmu_data.h - Samsung EXYNOS tmu data header file
+ *
+ *  Copyright (C) 2013 Samsung Electronics
+ *  Amit Daniel Kachhap <amit.daniel@samsung.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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _EXYNOS_TMU_DATA_H
+#define _EXYNOS_TMU_DATA_H
+
+/* Exynos generic registers */
+#define EXYNOS_TMU_REG_TRIMINFO		0x0
+#define EXYNOS_TMU_REG_CONTROL		0x20
+#define EXYNOS_TMU_REG_STATUS		0x28
+#define EXYNOS_TMU_REG_CURRENT_TEMP	0x40
+#define EXYNOS_TMU_REG_INTEN		0x70
+#define EXYNOS_TMU_REG_INTSTAT		0x74
+#define EXYNOS_TMU_REG_INTCLEAR		0x78
+
+#define EXYNOS_TMU_TEMP_MASK		0xff
+#define EXYNOS_TMU_REF_VOLTAGE_SHIFT	24
+#define EXYNOS_TMU_REF_VOLTAGE_MASK	0x1f
+#define EXYNOS_TMU_BUF_SLOPE_SEL_MASK	0xf
+#define EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT	8
+#define EXYNOS_TMU_CORE_EN_SHIFT	0
+
+/* Exynos4210 specific registers */
+#define EXYNOS4210_TMU_REG_THRESHOLD_TEMP	0x44
+#define EXYNOS4210_TMU_REG_TRIG_LEVEL0	0x50
+#define EXYNOS4210_TMU_REG_TRIG_LEVEL1	0x54
+#define EXYNOS4210_TMU_REG_TRIG_LEVEL2	0x58
+#define EXYNOS4210_TMU_REG_TRIG_LEVEL3	0x5C
+#define EXYNOS4210_TMU_REG_PAST_TEMP0	0x60
+#define EXYNOS4210_TMU_REG_PAST_TEMP1	0x64
+#define EXYNOS4210_TMU_REG_PAST_TEMP2	0x68
+#define EXYNOS4210_TMU_REG_PAST_TEMP3	0x6C
+
+#define EXYNOS4210_TMU_TRIG_LEVEL0_MASK	0x1
+#define EXYNOS4210_TMU_TRIG_LEVEL1_MASK	0x10
+#define EXYNOS4210_TMU_TRIG_LEVEL2_MASK	0x100
+#define EXYNOS4210_TMU_TRIG_LEVEL3_MASK	0x1000
+#define EXYNOS4210_TMU_TRIG_LEVEL_MASK	0x1111
+#define EXYNOS4210_TMU_INTCLEAR_VAL	0x1111
+
+/* Exynos5250 and Exynos4412 specific registers */
+#define EXYNOS_TMU_TRIMINFO_CON	0x14
+#define EXYNOS_THD_TEMP_RISE		0x50
+#define EXYNOS_THD_TEMP_FALL		0x54
+#define EXYNOS_EMUL_CON		0x80
+
+#define EXYNOS_TRIMINFO_RELOAD_SHIFT	1
+#define EXYNOS_TRIMINFO_25_SHIFT	0
+#define EXYNOS_TRIMINFO_85_SHIFT	8
+#define EXYNOS_TMU_RISE_INT_MASK	0x111
+#define EXYNOS_TMU_RISE_INT_SHIFT	0
+#define EXYNOS_TMU_FALL_INT_MASK	0x111
+#define EXYNOS_TMU_FALL_INT_SHIFT	12
+#define EXYNOS_TMU_CLEAR_RISE_INT	0x111
+#define EXYNOS_TMU_CLEAR_FALL_INT	(0x111 << 12)
+#define EXYNOS_TMU_TRIP_MODE_SHIFT	13
+#define EXYNOS_TMU_TRIP_MODE_MASK	0x7
+#define EXYNOS_TMU_THERM_TRIP_EN_SHIFT	12
+#define EXYNOS_TMU_CALIB_MODE_SHIFT	4
+#define EXYNOS_TMU_CALIB_MODE_MASK	0x3
+
+#define EXYNOS_TMU_INTEN_RISE0_SHIFT	0
+#define EXYNOS_TMU_INTEN_RISE1_SHIFT	4
+#define EXYNOS_TMU_INTEN_RISE2_SHIFT	8
+#define EXYNOS_TMU_INTEN_RISE3_SHIFT	12
+#define EXYNOS_TMU_INTEN_FALL0_SHIFT	16
+#define EXYNOS_TMU_INTEN_FALL1_SHIFT	20
+#define EXYNOS_TMU_INTEN_FALL2_SHIFT	24
+
+#define EXYNOS_EMUL_TIME	0x57F0
+#define EXYNOS_EMUL_TIME_MASK	0xffff
+#define EXYNOS_EMUL_TIME_SHIFT	16
+#define EXYNOS_EMUL_DATA_SHIFT	8
+#define EXYNOS_EMUL_DATA_MASK	0xFF
+#define EXYNOS_EMUL_ENABLE	0x1
+
+#define EXYNOS_MAX_TRIGGER_PER_REG	4
+
+/*exynos5440 specific registers*/
+#define EXYNOS5440_TMU_S0_7_TRIM		0x000
+#define EXYNOS5440_TMU_S0_7_CTRL		0x020
+#define EXYNOS5440_TMU_S0_7_DEBUG		0x040
+#define EXYNOS5440_TMU_S0_7_STATUS		0x060
+#define EXYNOS5440_TMU_S0_7_TEMP		0x0f0
+#define EXYNOS5440_TMU_S0_7_TH0			0x110
+#define EXYNOS5440_TMU_S0_7_TH1			0x130
+#define EXYNOS5440_TMU_S0_7_TH2			0x150
+#define EXYNOS5440_TMU_S0_7_EVTEN		0x1F0
+#define EXYNOS5440_TMU_S0_7_IRQEN		0x210
+#define EXYNOS5440_TMU_S0_7_IRQ			0x230
+/* exynos5440 common registers */
+#define EXYNOS5440_TMU_IRQ_STATUS		0x000
+#define EXYNOS5440_TMU_PMIN			0x004
+#define EXYNOS5440_TMU_TEMP			0x008
+
+#define EXYNOS5440_TMU_RISE_INT_MASK		0xf
+#define EXYNOS5440_TMU_RISE_INT_SHIFT		0
+#define EXYNOS5440_TMU_FALL_INT_MASK		0xf
+#define EXYNOS5440_TMU_FALL_INT_SHIFT		4
+#define EXYNOS5440_TMU_INTEN_RISE0_SHIFT	0
+#define EXYNOS5440_TMU_INTEN_RISE1_SHIFT	1
+#define EXYNOS5440_TMU_INTEN_RISE2_SHIFT	2
+#define EXYNOS5440_TMU_INTEN_RISE3_SHIFT	3
+#define EXYNOS5440_TMU_INTEN_FALL0_SHIFT	4
+#define EXYNOS5440_TMU_INTEN_FALL1_SHIFT	5
+#define EXYNOS5440_TMU_INTEN_FALL2_SHIFT	6
+#define EXYNOS5440_TMU_INTEN_FALL3_SHIFT	7
+#define EXYNOS5440_TMU_TH_RISE0_SHIFT		0
+#define EXYNOS5440_TMU_TH_RISE1_SHIFT		8
+#define EXYNOS5440_TMU_TH_RISE2_SHIFT		16
+#define EXYNOS5440_TMU_TH_RISE3_SHIFT		24
+#define EXYNOS5440_TMU_TH_RISE4_SHIFT		24
+#define EXYNOS5440_EFUSE_SWAP_OFFSET		8
+
+#if defined(CONFIG_CPU_EXYNOS4210)
+extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
+#define EXYNOS4210_TMU_DRV_DATA (&exynos4210_default_tmu_data)
+#else
+#define EXYNOS4210_TMU_DRV_DATA (NULL)
+#endif
+
+#if (defined(CONFIG_SOC_EXYNOS5250) || defined(CONFIG_SOC_EXYNOS4412))
+extern struct exynos_tmu_init_data const exynos5250_default_tmu_data;
+#define EXYNOS5250_TMU_DRV_DATA (&exynos5250_default_tmu_data)
+#else
+#define EXYNOS5250_TMU_DRV_DATA (NULL)
+#endif
+
+#if defined(CONFIG_SOC_EXYNOS5440)
+extern struct exynos_tmu_init_data const exynos5440_default_tmu_data;
+#define EXYNOS5440_TMU_DRV_DATA (&exynos5440_default_tmu_data)
+#else
+#define EXYNOS5440_TMU_DRV_DATA (NULL)
+#endif
+
+#endif /*_EXYNOS_TMU_DATA_H*/

drivers/thermal/step_wise.c

@@ -51,44 +51,51 @@ 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.
+	 * Otherwise, we use the current state of the
+	 * cdev in use to determine the next_target.
+	 */
 	cdev->ops->get_cur_state(cdev, &cur_state);
+	next_target = instance->target;
 
 	switch (trend) {
 	case THERMAL_TREND_RAISING:
 		if (throttle) {
-			cur_state = cur_state < instance->upper ?
+			next_target = cur_state < instance->upper ?
 				    (cur_state + 1) : instance->upper;
-			if (cur_state < instance->lower)
-				cur_state = instance->lower;
+			if (next_target < instance->lower)
+				next_target = instance->lower;
 		}
 		break;
 	case THERMAL_TREND_RAISE_FULL:
 		if (throttle)
-			cur_state = instance->upper;
+			next_target = instance->upper;
 		break;
 	case THERMAL_TREND_DROPPING:
 		if (cur_state == instance->lower) {
 			if (!throttle)
-				cur_state = -1;
+				next_target = THERMAL_NO_TARGET;
 		} else {
-			cur_state -= 1;
-			if (cur_state > instance->upper)
-				cur_state = instance->upper;
+			next_target = cur_state - 1;
+			if (next_target > instance->upper)
+				next_target = instance->upper;
 		}
 		break;
 	case THERMAL_TREND_DROP_FULL:
 		if (cur_state == instance->lower) {
 			if (!throttle)
-				cur_state = -1;
+				next_target = THERMAL_NO_TARGET;
 		} else
-			cur_state = instance->lower;
+			next_target = instance->lower;
 		break;
 	default:
 		break;
 	}
 
-	return cur_state;
+	return next_target;
 }
 
 static void update_passive_instance(struct thermal_zone_device *tz,
@@ -133,6 +140,9 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
 		old_target = instance->target;
 		instance->target = get_target_state(instance, trend, throttle);
 
+		if (old_target == instance->target)
+			continue;
+
 		/* Activate a passive thermal instance */
 		if (old_target == THERMAL_NO_TARGET &&
 			instance->target != THERMAL_NO_TARGET)

drivers/thermal/thermal_core.c

@@ -38,6 +38,7 @@
 #include <net/genetlink.h>
 
 #include "thermal_core.h"
+#include "thermal_hwmon.h"
 
 MODULE_AUTHOR("Zhang Rui");
 MODULE_DESCRIPTION("Generic thermal management sysfs support");
@@ -201,14 +202,23 @@ static void print_bind_err_msg(struct thermal_zone_device *tz,
 }
 
 static void __bind(struct thermal_zone_device *tz, int mask,
-			struct thermal_cooling_device *cdev)
+			struct thermal_cooling_device *cdev,
+			unsigned long *limits)
 {
 	int i, ret;
 
 	for (i = 0; i < tz->trips; i++) {
 		if (mask & (1 << i)) {
+			unsigned long upper, lower;
+
+			upper = THERMAL_NO_LIMIT;
+			lower = THERMAL_NO_LIMIT;
+			if (limits) {
+				lower = limits[i * 2];
+				upper = limits[i * 2 + 1];
+			}
 			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
-					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
+							       upper, lower);
 			if (ret)
 				print_bind_err_msg(tz, cdev, ret);
 		}
@@ -253,7 +263,8 @@ static void bind_cdev(struct thermal_cooling_device *cdev)
 			if (tzp->tbp[i].match(pos, cdev))
 				continue;
 			tzp->tbp[i].cdev = cdev;
-			__bind(pos, tzp->tbp[i].trip_mask, cdev);
+			__bind(pos, tzp->tbp[i].trip_mask, cdev,
+			       tzp->tbp[i].binding_limits);
 		}
 	}
 
@@ -291,7 +302,8 @@ static void bind_tz(struct thermal_zone_device *tz)
 			if (tzp->tbp[i].match(tz, pos))
 				continue;
 			tzp->tbp[i].cdev = pos;
-			__bind(tz, tzp->tbp[i].trip_mask, pos);
+			__bind(tz, tzp->tbp[i].trip_mask, pos,
+			       tzp->tbp[i].binding_limits);
 		}
 	}
 exit:
@@ -859,260 +871,6 @@ thermal_cooling_device_trip_point_show(struct device *dev,
 
 /* Device management */
 
-#if defined(CONFIG_THERMAL_HWMON)
-
-/* hwmon sys I/F */
-#include <linux/hwmon.h>
-
-/* thermal zone devices with the same type share one hwmon device */
-struct thermal_hwmon_device {
-	char type[THERMAL_NAME_LENGTH];
-	struct device *device;
-	int count;
-	struct list_head tz_list;
-	struct list_head node;
-};
-
-struct thermal_hwmon_attr {
-	struct device_attribute attr;
-	char name[16];
-};
-
-/* one temperature input for each thermal zone */
-struct thermal_hwmon_temp {
-	struct list_head hwmon_node;
-	struct thermal_zone_device *tz;
-	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
-	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
-};
-
-static LIST_HEAD(thermal_hwmon_list);
-
-static ssize_t
-name_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
-	return sprintf(buf, "%s\n", hwmon->type);
-}
-static DEVICE_ATTR(name, 0444, name_show, NULL);
-
-static ssize_t
-temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	long temperature;
-	int ret;
-	struct thermal_hwmon_attr *hwmon_attr
-			= container_of(attr, struct thermal_hwmon_attr, attr);
-	struct thermal_hwmon_temp *temp
-			= container_of(hwmon_attr, struct thermal_hwmon_temp,
-				       temp_input);
-	struct thermal_zone_device *tz = temp->tz;
-
-	ret = thermal_zone_get_temp(tz, &temperature);
-
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%ld\n", temperature);
-}
-
-static ssize_t
-temp_crit_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
-{
-	struct thermal_hwmon_attr *hwmon_attr
-			= container_of(attr, struct thermal_hwmon_attr, attr);
-	struct thermal_hwmon_temp *temp
-			= container_of(hwmon_attr, struct thermal_hwmon_temp,
-				       temp_crit);
-	struct thermal_zone_device *tz = temp->tz;
-	long temperature;
-	int ret;
-
-	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%ld\n", temperature);
-}
-
-
-static struct thermal_hwmon_device *
-thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_device *hwmon;
-
-	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
-		if (!strcmp(hwmon->type, tz->type)) {
-			mutex_unlock(&thermal_list_lock);
-			return hwmon;
-		}
-	mutex_unlock(&thermal_list_lock);
-
-	return NULL;
-}
-
-/* Find the temperature input matching a given thermal zone */
-static struct thermal_hwmon_temp *
-thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
-			  const struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_temp *temp;
-
-	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
-		if (temp->tz == tz) {
-			mutex_unlock(&thermal_list_lock);
-			return temp;
-		}
-	mutex_unlock(&thermal_list_lock);
-
-	return NULL;
-}
-
-static int
-thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_device *hwmon;
-	struct thermal_hwmon_temp *temp;
-	int new_hwmon_device = 1;
-	int result;
-
-	hwmon = thermal_hwmon_lookup_by_type(tz);
-	if (hwmon) {
-		new_hwmon_device = 0;
-		goto register_sys_interface;
-	}
-
-	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
-	if (!hwmon)
-		return -ENOMEM;
-
-	INIT_LIST_HEAD(&hwmon->tz_list);
-	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
-	hwmon->device = hwmon_device_register(NULL);
-	if (IS_ERR(hwmon->device)) {
-		result = PTR_ERR(hwmon->device);
-		goto free_mem;
-	}
-	dev_set_drvdata(hwmon->device, hwmon);
-	result = device_create_file(hwmon->device, &dev_attr_name);
-	if (result)
-		goto free_mem;
-
- register_sys_interface:
-	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
-	if (!temp) {
-		result = -ENOMEM;
-		goto unregister_name;
-	}
-
-	temp->tz = tz;
-	hwmon->count++;
-
-	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
-		 "temp%d_input", hwmon->count);
-	temp->temp_input.attr.attr.name = temp->temp_input.name;
-	temp->temp_input.attr.attr.mode = 0444;
-	temp->temp_input.attr.show = temp_input_show;
-	sysfs_attr_init(&temp->temp_input.attr.attr);
-	result = device_create_file(hwmon->device, &temp->temp_input.attr);
-	if (result)
-		goto free_temp_mem;
-
-	if (tz->ops->get_crit_temp) {
-		unsigned long temperature;
-		if (!tz->ops->get_crit_temp(tz, &temperature)) {
-			snprintf(temp->temp_crit.name,
-				 sizeof(temp->temp_crit.name),
-				"temp%d_crit", hwmon->count);
-			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
-			temp->temp_crit.attr.attr.mode = 0444;
-			temp->temp_crit.attr.show = temp_crit_show;
-			sysfs_attr_init(&temp->temp_crit.attr.attr);
-			result = device_create_file(hwmon->device,
-						    &temp->temp_crit.attr);
-			if (result)
-				goto unregister_input;
-		}
-	}
-
-	mutex_lock(&thermal_list_lock);
-	if (new_hwmon_device)
-		list_add_tail(&hwmon->node, &thermal_hwmon_list);
-	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
-	mutex_unlock(&thermal_list_lock);
-
-	return 0;
-
- unregister_input:
-	device_remove_file(hwmon->device, &temp->temp_input.attr);
- free_temp_mem:
-	kfree(temp);
- unregister_name:
-	if (new_hwmon_device) {
-		device_remove_file(hwmon->device, &dev_attr_name);
-		hwmon_device_unregister(hwmon->device);
-	}
- free_mem:
-	if (new_hwmon_device)
-		kfree(hwmon);
-
-	return result;
-}
-
-static void
-thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-	struct thermal_hwmon_device *hwmon;
-	struct thermal_hwmon_temp *temp;
-
-	hwmon = thermal_hwmon_lookup_by_type(tz);
-	if (unlikely(!hwmon)) {
-		/* Should never happen... */
-		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
-		return;
-	}
-
-	temp = thermal_hwmon_lookup_temp(hwmon, tz);
-	if (unlikely(!temp)) {
-		/* Should never happen... */
-		dev_dbg(&tz->device, "temperature input lookup failed!\n");
-		return;
-	}
-
-	device_remove_file(hwmon->device, &temp->temp_input.attr);
-	if (tz->ops->get_crit_temp)
-		device_remove_file(hwmon->device, &temp->temp_crit.attr);
-
-	mutex_lock(&thermal_list_lock);
-	list_del(&temp->hwmon_node);
-	kfree(temp);
-	if (!list_empty(&hwmon->tz_list)) {
-		mutex_unlock(&thermal_list_lock);
-		return;
-	}
-	list_del(&hwmon->node);
-	mutex_unlock(&thermal_list_lock);
-
-	device_remove_file(hwmon->device, &dev_attr_name);
-	hwmon_device_unregister(hwmon->device);
-	kfree(hwmon);
-}
-#else
-static int
-thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-	return 0;
-}
-
-static void
-thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
-{
-}
-#endif
-
 /**
  * thermal_zone_bind_cooling_device() - bind a cooling device to a thermal zone
  * @tz:		pointer to struct thermal_zone_device
@@ -1715,9 +1473,11 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
 
 	mutex_unlock(&thermal_governor_lock);
 
-	result = thermal_add_hwmon_sysfs(tz);
-	if (result)
-		goto unregister;
+	if (!tz->tzp || !tz->tzp->no_hwmon) {
+		result = thermal_add_hwmon_sysfs(tz);
+		if (result)
+			goto unregister;
+	}
 
 	mutex_lock(&thermal_list_lock);
 	list_add_tail(&tz->node, &thermal_tz_list);

drivers/thermal/thermal_hwmon.c

+/*
+ *  thermal_hwmon.c - Generic Thermal Management hwmon support.
+ *
+ *  Code based on Intel thermal_core.c. Copyrights of the original code:
+ *  Copyright (C) 2008 Intel Corp
+ *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ *
+ *  Copyright (C) 2013 Texas Instruments
+ *  Copyright (C) 2013 Eduardo Valentin <eduardo.valentin@ti.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.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#include <linux/hwmon.h>
+#include <linux/thermal.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include "thermal_hwmon.h"
+
+/* hwmon sys I/F */
+/* thermal zone devices with the same type share one hwmon device */
+struct thermal_hwmon_device {
+	char type[THERMAL_NAME_LENGTH];
+	struct device *device;
+	int count;
+	struct list_head tz_list;
+	struct list_head node;
+};
+
+struct thermal_hwmon_attr {
+	struct device_attribute attr;
+	char name[16];
+};
+
+/* one temperature input for each thermal zone */
+struct thermal_hwmon_temp {
+	struct list_head hwmon_node;
+	struct thermal_zone_device *tz;
+	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
+	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
+};
+
+static LIST_HEAD(thermal_hwmon_list);
+
+static DEFINE_MUTEX(thermal_hwmon_list_lock);
+
+static ssize_t
+name_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
+	return sprintf(buf, "%s\n", hwmon->type);
+}
+static DEVICE_ATTR(name, 0444, name_show, NULL);
+
+static ssize_t
+temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	long temperature;
+	int ret;
+	struct thermal_hwmon_attr *hwmon_attr
+			= container_of(attr, struct thermal_hwmon_attr, attr);
+	struct thermal_hwmon_temp *temp
+			= container_of(hwmon_attr, struct thermal_hwmon_temp,
+				       temp_input);
+	struct thermal_zone_device *tz = temp->tz;
+
+	ret = thermal_zone_get_temp(tz, &temperature);
+
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%ld\n", temperature);
+}
+
+static ssize_t
+temp_crit_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct thermal_hwmon_attr *hwmon_attr
+			= container_of(attr, struct thermal_hwmon_attr, attr);
+	struct thermal_hwmon_temp *temp
+			= container_of(hwmon_attr, struct thermal_hwmon_temp,
+				       temp_crit);
+	struct thermal_zone_device *tz = temp->tz;
+	long temperature;
+	int ret;
+
+	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%ld\n", temperature);
+}
+
+
+static struct thermal_hwmon_device *
+thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+
+	mutex_lock(&thermal_hwmon_list_lock);
+	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
+		if (!strcmp(hwmon->type, tz->type)) {
+			mutex_unlock(&thermal_hwmon_list_lock);
+			return hwmon;
+		}
+	mutex_unlock(&thermal_hwmon_list_lock);
+
+	return NULL;
+}
+
+/* Find the temperature input matching a given thermal zone */
+static struct thermal_hwmon_temp *
+thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
+			  const struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_temp *temp;
+
+	mutex_lock(&thermal_hwmon_list_lock);
+	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
+		if (temp->tz == tz) {
+			mutex_unlock(&thermal_hwmon_list_lock);
+			return temp;
+		}
+	mutex_unlock(&thermal_hwmon_list_lock);
+
+	return NULL;
+}
+
+int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+	struct thermal_hwmon_temp *temp;
+	int new_hwmon_device = 1;
+	int result;
+
+	hwmon = thermal_hwmon_lookup_by_type(tz);
+	if (hwmon) {
+		new_hwmon_device = 0;
+		goto register_sys_interface;
+	}
+
+	hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL);
+	if (!hwmon)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&hwmon->tz_list);
+	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
+	hwmon->device = hwmon_device_register(&tz->device);
+	if (IS_ERR(hwmon->device)) {
+		result = PTR_ERR(hwmon->device);
+		goto free_mem;
+	}
+	dev_set_drvdata(hwmon->device, hwmon);
+	result = device_create_file(hwmon->device, &dev_attr_name);
+	if (result)
+		goto free_mem;
+
+ register_sys_interface:
+	temp = kzalloc(sizeof(*temp), GFP_KERNEL);
+	if (!temp) {
+		result = -ENOMEM;
+		goto unregister_name;
+	}
+
+	temp->tz = tz;
+	hwmon->count++;
+
+	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
+		 "temp%d_input", hwmon->count);
+	temp->temp_input.attr.attr.name = temp->temp_input.name;
+	temp->temp_input.attr.attr.mode = 0444;
+	temp->temp_input.attr.show = temp_input_show;
+	sysfs_attr_init(&temp->temp_input.attr.attr);
+	result = device_create_file(hwmon->device, &temp->temp_input.attr);
+	if (result)
+		goto free_temp_mem;
+
+	if (tz->ops->get_crit_temp) {
+		unsigned long temperature;
+		if (!tz->ops->get_crit_temp(tz, &temperature)) {
+			snprintf(temp->temp_crit.name,
+				 sizeof(temp->temp_crit.name),
+				"temp%d_crit", hwmon->count);
+			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
+			temp->temp_crit.attr.attr.mode = 0444;
+			temp->temp_crit.attr.show = temp_crit_show;
+			sysfs_attr_init(&temp->temp_crit.attr.attr);
+			result = device_create_file(hwmon->device,
+						    &temp->temp_crit.attr);
+			if (result)
+				goto unregister_input;
+		}
+	}
+
+	mutex_lock(&thermal_hwmon_list_lock);
+	if (new_hwmon_device)
+		list_add_tail(&hwmon->node, &thermal_hwmon_list);
+	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
+	mutex_unlock(&thermal_hwmon_list_lock);
+
+	return 0;
+
+ unregister_input:
+	device_remove_file(hwmon->device, &temp->temp_input.attr);
+ free_temp_mem:
+	kfree(temp);
+ unregister_name:
+	if (new_hwmon_device) {
+		device_remove_file(hwmon->device, &dev_attr_name);
+		hwmon_device_unregister(hwmon->device);
+	}
+ free_mem:
+	if (new_hwmon_device)
+		kfree(hwmon);
+
+	return result;
+}
+
+void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+	struct thermal_hwmon_temp *temp;
+
+	hwmon = thermal_hwmon_lookup_by_type(tz);
+	if (unlikely(!hwmon)) {
+		/* Should never happen... */
+		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
+		return;
+	}
+
+	temp = thermal_hwmon_lookup_temp(hwmon, tz);
+	if (unlikely(!temp)) {
+		/* Should never happen... */
+		dev_dbg(&tz->device, "temperature input lookup failed!\n");
+		return;
+	}
+
+	device_remove_file(hwmon->device, &temp->temp_input.attr);
+	if (tz->ops->get_crit_temp)
+		device_remove_file(hwmon->device, &temp->temp_crit.attr);
+
+	mutex_lock(&thermal_hwmon_list_lock);
+	list_del(&temp->hwmon_node);
+	kfree(temp);
+	if (!list_empty(&hwmon->tz_list)) {
+		mutex_unlock(&thermal_hwmon_list_lock);
+		return;
+	}
+	list_del(&hwmon->node);
+	mutex_unlock(&thermal_hwmon_list_lock);
+
+	device_remove_file(hwmon->device, &dev_attr_name);
+	hwmon_device_unregister(hwmon->device);
+	kfree(hwmon);
+}

drivers/thermal/thermal_hwmon.h

+/*
+ *  thermal_hwmon.h - Generic Thermal Management hwmon support.
+ *
+ *  Code based on Intel thermal_core.c. Copyrights of the original code:
+ *  Copyright (C) 2008 Intel Corp
+ *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ *
+ *  Copyright (C) 2013 Texas Instruments
+ *  Copyright (C) 2013 Eduardo Valentin <eduardo.valentin@ti.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.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#ifndef __THERMAL_HWMON_H__
+#define __THERMAL_HWMON_H__
+
+#include <linux/thermal.h>
+
+#ifdef CONFIG_THERMAL_HWMON
+int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz);
+void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz);
+#else
+static int
+thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	return 0;
+}
+
+static void
+thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+}
+#endif
+
+#endif /* __THERMAL_HWMON_H__ */

drivers/thermal/ti-soc-thermal/dra752-thermal-data.c

@@ -42,6 +42,7 @@ dra752_core_temp_sensor_registers = {
 	.mask_hot_mask = DRA752_BANDGAP_CTRL_1_MASK_HOT_CORE_MASK,
 	.mask_cold_mask = DRA752_BANDGAP_CTRL_1_MASK_COLD_CORE_MASK,
 	.mask_sidlemode_mask = DRA752_BANDGAP_CTRL_1_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = DRA752_BANDGAP_CTRL_1_COUNTER_DELAY_MASK,
 	.mask_freeze_mask = DRA752_BANDGAP_CTRL_1_FREEZE_CORE_MASK,
 	.mask_clear_mask = DRA752_BANDGAP_CTRL_1_CLEAR_CORE_MASK,
 	.mask_clear_accum_mask = DRA752_BANDGAP_CTRL_1_CLEAR_ACCUM_CORE_MASK,
@@ -77,6 +78,7 @@ dra752_iva_temp_sensor_registers = {
 	.mask_hot_mask = DRA752_BANDGAP_CTRL_2_MASK_HOT_IVA_MASK,
 	.mask_cold_mask = DRA752_BANDGAP_CTRL_2_MASK_COLD_IVA_MASK,
 	.mask_sidlemode_mask = DRA752_BANDGAP_CTRL_1_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = DRA752_BANDGAP_CTRL_1_COUNTER_DELAY_MASK,
 	.mask_freeze_mask = DRA752_BANDGAP_CTRL_2_FREEZE_IVA_MASK,
 	.mask_clear_mask = DRA752_BANDGAP_CTRL_2_CLEAR_IVA_MASK,
 	.mask_clear_accum_mask = DRA752_BANDGAP_CTRL_2_CLEAR_ACCUM_IVA_MASK,
@@ -112,6 +114,7 @@ dra752_mpu_temp_sensor_registers = {
 	.mask_hot_mask = DRA752_BANDGAP_CTRL_1_MASK_HOT_MPU_MASK,
 	.mask_cold_mask = DRA752_BANDGAP_CTRL_1_MASK_COLD_MPU_MASK,
 	.mask_sidlemode_mask = DRA752_BANDGAP_CTRL_1_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = DRA752_BANDGAP_CTRL_1_COUNTER_DELAY_MASK,
 	.mask_freeze_mask = DRA752_BANDGAP_CTRL_1_FREEZE_MPU_MASK,
 	.mask_clear_mask = DRA752_BANDGAP_CTRL_1_CLEAR_MPU_MASK,
 	.mask_clear_accum_mask = DRA752_BANDGAP_CTRL_1_CLEAR_ACCUM_MPU_MASK,
@@ -147,6 +150,7 @@ dra752_dspeve_temp_sensor_registers = {
 	.mask_hot_mask = DRA752_BANDGAP_CTRL_2_MASK_HOT_DSPEVE_MASK,
 	.mask_cold_mask = DRA752_BANDGAP_CTRL_2_MASK_COLD_DSPEVE_MASK,
 	.mask_sidlemode_mask = DRA752_BANDGAP_CTRL_1_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = DRA752_BANDGAP_CTRL_1_COUNTER_DELAY_MASK,
 	.mask_freeze_mask = DRA752_BANDGAP_CTRL_2_FREEZE_DSPEVE_MASK,
 	.mask_clear_mask = DRA752_BANDGAP_CTRL_2_CLEAR_DSPEVE_MASK,
 	.mask_clear_accum_mask = DRA752_BANDGAP_CTRL_2_CLEAR_ACCUM_DSPEVE_MASK,
@@ -182,6 +186,7 @@ dra752_gpu_temp_sensor_registers = {
 	.mask_hot_mask = DRA752_BANDGAP_CTRL_1_MASK_HOT_GPU_MASK,
 	.mask_cold_mask = DRA752_BANDGAP_CTRL_1_MASK_COLD_GPU_MASK,
 	.mask_sidlemode_mask = DRA752_BANDGAP_CTRL_1_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = DRA752_BANDGAP_CTRL_1_COUNTER_DELAY_MASK,
 	.mask_freeze_mask = DRA752_BANDGAP_CTRL_1_FREEZE_GPU_MASK,
 	.mask_clear_mask = DRA752_BANDGAP_CTRL_1_CLEAR_GPU_MASK,
 	.mask_clear_accum_mask = DRA752_BANDGAP_CTRL_1_CLEAR_ACCUM_GPU_MASK,

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

@@ -1020,9 +1020,13 @@ int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend)
 
 	/* Fetch the update interval */
 	ret = ti_bandgap_read_update_interval(bgp, id, &interval);
-	if (ret || !interval)
+	if (ret)
 		goto unfreeze;
 
+	/* Set the interval to 1 ms if bandgap counter delay is not set */
+	if (interval == 0)
+		interval = 1;
+
 	*trend = (t1 - t2) / interval;
 
 	dev_dbg(bgp->dev, "The temperatures are t1 = %d and t2 = %d and trend =%d\n",

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

@@ -174,6 +174,9 @@ static int ti_thermal_set_mode(struct thermal_zone_device *thermal,
 			       enum thermal_device_mode mode)
 {
 	struct ti_thermal_data *data = thermal->devdata;
+	struct ti_bandgap *bgp;
+
+	bgp = data->bgp;
 
 	if (!data->ti_thermal) {
 		dev_notice(&thermal->device, "thermal zone not registered\n");
@@ -190,6 +193,8 @@ static int ti_thermal_set_mode(struct thermal_zone_device *thermal,
 	mutex_unlock(&data->ti_thermal->lock);
 
 	data->mode = mode;
+	ti_bandgap_write_update_interval(bgp, data->sensor_id,
+					data->ti_thermal->polling_delay);
 	thermal_zone_device_update(data->ti_thermal);
 	dev_dbg(&thermal->device, "thermal polling set for duration=%d msec\n",
 		data->ti_thermal->polling_delay);
@@ -313,6 +318,8 @@ int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
 	}
 	data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
 	ti_bandgap_set_sensor_data(bgp, id, data);
+	ti_bandgap_write_update_interval(bgp, data->sensor_id,
+					data->ti_thermal->polling_delay);
 
 	return 0;
 }

include/linux/thermal.h

@@ -207,6 +207,16 @@ struct thermal_bind_params {
 	 * See Documentation/thermal/sysfs-api.txt for more information.
 	 */
 	int trip_mask;
+
+	/*
+	 * This is an array of cooling state limits. Must have exactly
+	 * 2 * thermal_zone.number_of_trip_points. It is an array consisting
+	 * of tuples <lower-state upper-state> of state limits. Each trip
+	 * will be associated with one state limit tuple when binding.
+	 * A NULL pointer means <THERMAL_NO_LIMITS THERMAL_NO_LIMITS>
+	 * on all trips.
+	 */
+	unsigned long *binding_limits;
 	int (*match) (struct thermal_zone_device *tz,
 			struct thermal_cooling_device *cdev);
 };
@@ -214,6 +224,14 @@ struct thermal_bind_params {
 /* Structure to define Thermal Zone parameters */
 struct thermal_zone_params {
 	char governor_name[THERMAL_NAME_LENGTH];
+
+	/*
+	 * a boolean to indicate if the thermal to hwmon sysfs interface
+	 * is required. when no_hwmon == false, a hwmon sysfs interface
+	 * will be created. when no_hwmon == true, nothing will be done
+	 */
+	bool no_hwmon;
+
 	int num_tbps;	/* Number of tbp entries */
 	struct thermal_bind_params *tbp;
 };