Merge tag 'thermal-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Pull thermal updates from Daniel Lezcano:

 - Add the hwmon support on the i.MX SC (Anson Huang)

 - Thermal framework cleanups (self-encapsulation, pointless stubs,
   private structures) (Daniel Lezcano)

 - Use the PM QoS frequency changes for the devfreq cooling device
   (Matthias Kaehlcke)

 - Remove duplicate error messages from platform_get_irq() error
   handling (Markus Elfring)

 - Add support for the bandgap sensors (Keerthy)

 - Statically initialize .get_mode/.set_mode ops (Andrzej Pietrasiewicz)

 - Add Renesas R-Car maintainer entry (Niklas Söderlund)

 - Fix error checking after calling ti_bandgap_get_sensor_data() for the
   TI SoC thermal (Sudip Mukherjee)

 - Add latency constraint for the idle injection, the DT binding and the
   change the registering function (Daniel Lezcano)

 - Convert the thermal framework binding to the Yaml schema (Amit
   Kucheria)

 - Replace zero-length array with flexible-array on i.MX 8MM (Gustavo A.
   R. Silva)

 - Thermal framework cleanups (alphabetic order for heads, replace
   module.h by export.h, make file naming consistent) (Amit Kucheria)

 - Merge tsens-common into the tsens driver (Amit Kucheria)

 - Fix platform dependency for the Qoriq driver (Geert Uytterhoeven)

 - Clean up the rcar_thermal_update_temp() function in the rcar thermal
   driver (Niklas Söderlund)

 - Fix the TMSAR register for the TMUv2 on the Qoriq platform (Yuantian
   Tang)

 - Export GDDV, OEM vendor variables, and don't require IDSP for the
   int340x thermal driver - trivial conflicts fixed (Matthew Garrett)

* tag 'thermal-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (48 commits)
  thermal/int340x_thermal: Don't require IDSP to exist
  thermal/int340x_thermal: Export OEM vendor variables
  thermal/int340x_thermal: Export GDDV
  thermal: qoriq: Update the settings for TMUv2
  thermal: rcar_thermal: Clean up rcar_thermal_update_temp()
  thermal: qoriq: Add platform dependencies
  drivers: thermal: tsens: Merge tsens-common.c into tsens.c
  thermal/of: Rename of-thermal.c
  thermal/governors: Prefix all source files with gov_
  thermal/drivers/user_space: Sort headers alphabetically
  thermal/drivers/of-thermal: Sort headers alphabetically
  thermal/drivers/cpufreq_cooling: Replace module.h with export.h
  thermal/drivers/cpufreq_cooling: Sort headers alphabetically
  thermal/drivers/clock_cooling: Include export.h
  thermal/drivers/clock_cooling: Sort headers alphabetically
  thermal/drivers/thermal_hwmon: Include export.h
  thermal/drivers/thermal_hwmon: Sort headers alphabetically
  thermal/drivers/thermal_helpers: Include export.h
  thermal/drivers/thermal_helpers: Sort headers alphabetically
  thermal/core: Replace module.h with export.h
  ...

Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml

+# SPDX-License-Identifier: (GPL-2.0)
+# Copyright 2020 Linaro Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/thermal-cooling-devices.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Thermal cooling device binding
+
+maintainers:
+  - Amit Kucheria <amitk@kernel.org>
+
+description: |
+  Thermal management is achieved in devicetree by describing the sensor hardware
+  and the software abstraction of cooling devices and thermal zones required to
+  take appropriate action to mitigate thermal overload.
+
+  The following node types are used to completely describe a thermal management
+  system in devicetree:
+   - thermal-sensor: device that measures temperature, has SoC-specific bindings
+   - cooling-device: device used to dissipate heat either passively or actively
+   - thermal-zones: a container of the following node types used to describe all
+     thermal data for the platform
+
+  This binding describes the cooling devices.
+
+  There are essentially two ways to provide control on power dissipation:
+    - Passive cooling: by means of regulating device performance. A typical
+      passive cooling mechanism is a CPU that has dynamic voltage and frequency
+      scaling (DVFS), and uses lower frequencies as cooling states.
+    - Active cooling: by means of activating devices in order to remove the
+      dissipated heat, e.g. regulating fan speeds.
+
+  Any cooling device has a range of cooling states (i.e. different levels of
+  heat dissipation). They also have a way to determine the state of cooling in
+  which the device is. For example, a fan's cooling states correspond to the
+  different fan speeds possible. Cooling states are referred to by single
+  unsigned integers, where larger numbers mean greater heat dissipation. The
+  precise set of cooling states associated with a device should be defined in
+  a particular device's binding.
+
+select: true
+
+properties:
+  "#cooling-cells":
+    description:
+        Must be 2, in order to specify minimum and maximum cooling state used in
+        the cooling-maps reference. The first cell is the minimum cooling state
+        and the second cell is the maximum cooling state requested.
+    const: 2
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/thermal/thermal.h>
+
+    // Example 1: Cpufreq cooling device on CPU0
+    cpus {
+            #address-cells = <2>;
+            #size-cells = <0>;
+
+            CPU0: cpu@0 {
+                    device_type = "cpu";
+                    compatible = "qcom,kryo385";
+                    reg = <0x0 0x0>;
+                    enable-method = "psci";
+                    cpu-idle-states = <&LITTLE_CPU_SLEEP_0
+                                       &LITTLE_CPU_SLEEP_1
+                                       &CLUSTER_SLEEP_0>;
+                    capacity-dmips-mhz = <607>;
+                    dynamic-power-coefficient = <100>;
+                    qcom,freq-domain = <&cpufreq_hw 0>;
+                    #cooling-cells = <2>;
+                    next-level-cache = <&L2_0>;
+                    L2_0: l2-cache {
+                            compatible = "cache";
+                            next-level-cache = <&L3_0>;
+                            L3_0: l3-cache {
+                                    compatible = "cache";
+                            };
+                    };
+          };
+
+          /* ... */
+
+    };
+
+    /* ... */
+
+    thermal-zones {
+            cpu0-thermal {
+                    polling-delay-passive = <250>;
+                    polling-delay = <1000>;
+
+                    thermal-sensors = <&tsens0 1>;
+
+                    trips {
+                            cpu0_alert0: trip-point0 {
+                                    temperature = <90000>;
+                                    hysteresis = <2000>;
+                                    type = "passive";
+                            };
+                    };
+
+                    cooling-maps {
+                            map0 {
+                                    trip = <&cpu0_alert0>;
+                                    /* Corresponds to 1000MHz in OPP table */
+                                    cooling-device = <&CPU0 5 5>;
+                            };
+                    };
+            };
+
+            /* ... */
+    };
+...

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

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2020 Linaro Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/thermal-idle.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Thermal idle cooling device binding
+
+maintainers:
+  - Daniel Lezcano <daniel.lezcano@linaro.org>
+
+description: |
+  The thermal idle cooling device allows the system to passively
+  mitigate the temperature on the device by injecting idle cycles,
+  forcing it to cool down.
+
+  This binding describes the thermal idle node.
+
+properties:
+   $nodename:
+     const: thermal-idle
+     description: |
+        A thermal-idle node describes the idle cooling device properties to
+        cool down efficiently the attached thermal zone.
+
+   '#cooling-cells':
+      const: 2
+      description: |
+         Must be 2, in order to specify minimum and maximum cooling state used in
+         the cooling-maps reference. The first cell is the minimum cooling state
+         and the second cell is the maximum cooling state requested.
+
+   duration-us:
+      description: |
+         The idle duration in microsecond the device should cool down.
+
+   exit-latency-us:
+      description: |
+         The exit latency constraint in microsecond for the injected
+         idle state for the device. It is the latency constraint to
+         apply when selecting an idle state from among all the present
+         ones.
+
+required:
+  - '#cooling-cells'
+
+examples:
+  - |
+    #include <dt-bindings/thermal/thermal.h>
+
+    // Example: Combining idle cooling device on big CPUs with cpufreq cooling device
+    cpus {
+            #address-cells = <2>;
+            #size-cells = <0>;
+
+            /* ... */
+
+                 cpu_b0: cpu@100 {
+                         device_type = "cpu";
+                         compatible = "arm,cortex-a72";
+                         reg = <0x0 0x100>;
+                         enable-method = "psci";
+                         capacity-dmips-mhz = <1024>;
+                         dynamic-power-coefficient = <436>;
+                         #cooling-cells = <2>; /* min followed by max */
+                         cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+                         thermal-idle {
+                                 #cooling-cells = <2>;
+                                 duration-us = <10000>;
+                                 exit-latency-us = <500>;
+                         };
+                };
+
+                cpu_b1: cpu@101 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a72";
+                        reg = <0x0 0x101>;
+                        enable-method = "psci";
+                        capacity-dmips-mhz = <1024>;
+                        dynamic-power-coefficient = <436>;
+                        #cooling-cells = <2>; /* min followed by max */
+                        cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+                        thermal-idle {
+                                #cooling-cells = <2>;
+                                duration-us = <10000>;
+                                exit-latency-us = <500>;
+                        };
+                 };
+
+          /* ... */
+
+    };
+
+    /* ... */
+
+    thermal_zones {
+         cpu_thermal: cpu {
+                polling-delay-passive = <100>;
+                polling-delay = <1000>;
+
+                /* ... */
+
+                trips {
+                        cpu_alert0: cpu_alert0 {
+                                    temperature = <65000>;
+                                    hysteresis = <2000>;
+                                    type = "passive";
+                        };
+
+                        cpu_alert1: cpu_alert1 {
+                                    temperature = <70000>;
+                                    hysteresis = <2000>;
+                                    type = "passive";
+                        };
+
+                        cpu_alert2: cpu_alert2 {
+                                    temperature = <75000>;
+                                    hysteresis = <2000>;
+                                    type = "passive";
+                        };
+
+                        cpu_crit: cpu_crit {
+                                    temperature = <95000>;
+                                    hysteresis = <2000>;
+                                    type = "critical";
+                        };
+                };
+
+                cooling-maps {
+                        map0 {
+                             trip = <&cpu_alert1>;
+                             cooling-device = <&{/cpus/cpu@100/thermal-idle} 0 15 >,
+                                              <&{/cpus/cpu@101/thermal-idle} 0 15>;
+                        };
+
+                        map1 {
+                             trip = <&cpu_alert2>;
+                             cooling-device =
+                                        <&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+                                        <&cpu_b1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                       };
+                };
+          };
+    };

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

+# SPDX-License-Identifier: (GPL-2.0)
+# Copyright 2020 Linaro Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/thermal-sensor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Thermal sensor binding
+
+maintainers:
+  - Amit Kucheria <amitk@kernel.org>
+
+description: |
+  Thermal management is achieved in devicetree by describing the sensor hardware
+  and the software abstraction of thermal zones required to take appropriate
+  action to mitigate thermal overloads.
+
+  The following node types are used to completely describe a thermal management
+  system in devicetree:
+   - thermal-sensor: device that measures temperature, has SoC-specific bindings
+   - cooling-device: device used to dissipate heat either passively or actively
+   - thermal-zones: a container of the following node types used to describe all
+     thermal data for the platform
+
+  This binding describes the thermal-sensor.
+
+  Thermal sensor devices provide temperature sensing capabilities on thermal
+  zones. Typical devices are I2C ADC converters and bandgaps. Thermal sensor
+  devices may control one or more internal sensors.
+
+properties:
+  "#thermal-sensor-cells":
+    description:
+      Used to uniquely identify a thermal sensor instance within an IC. Will be
+      0 on sensor nodes with only a single sensor and at least 1 on nodes
+      containing several internal sensors.
+    enum: [0, 1]
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    // Example 1: SDM845 TSENS
+    soc: soc@0 {
+            #address-cells = <2>;
+            #size-cells = <2>;
+
+            /* ... */
+
+            tsens0: thermal-sensor@c263000 {
+                    compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
+                    reg = <0 0x0c263000 0 0x1ff>, /* TM */
+                          <0 0x0c222000 0 0x1ff>; /* SROT */
+                    #qcom,sensors = <13>;
+                    interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
+                                 <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
+                    interrupt-names = "uplow", "critical";
+                    #thermal-sensor-cells = <1>;
+            };
+
+            tsens1: thermal-sensor@c265000 {
+                    compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
+                    reg = <0 0x0c265000 0 0x1ff>, /* TM */
+                          <0 0x0c223000 0 0x1ff>; /* SROT */
+                    #qcom,sensors = <8>;
+                    interrupts = <GIC_SPI 507 IRQ_TYPE_LEVEL_HIGH>,
+                                 <GIC_SPI 509 IRQ_TYPE_LEVEL_HIGH>;
+                    interrupt-names = "uplow", "critical";
+                    #thermal-sensor-cells = <1>;
+            };
+    };
+...

Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/ti,am654-thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments AM654 VTM (DTS) binding
+
+maintainers:
+  - Keerthy <j-keerthy@ti.com>
+
+properties:
+  compatible:
+    const: ti,am654-vtm
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  "#thermal-sensor-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - power-domains
+  - "#thermal-sensor-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+    vtm: thermal@42050000 {
+        compatible = "ti,am654-vtm";
+        reg = <0x0 0x42050000 0x0 0x25c>;
+        power-domains = <&k3_pds 80 TI_SCI_PD_EXCLUSIVE>;
+        #thermal-sensor-cells = <1>;
+    };
+
+    mpu0_thermal: mpu0_thermal {
+        polling-delay-passive = <250>; /* milliseconds */
+        polling-delay = <500>; /* milliseconds */
+        thermal-sensors = <&vtm0 0>;
+
+        trips {
+                mpu0_crit: mpu0_crit {
+                        temperature = <125000>; /* milliCelsius */
+                        hysteresis = <2000>; /* milliCelsius */
+                        type = "critical";
+                };
+        };
+    };
+...

MAINTAINERS

@@ -14556,6 +14556,15 @@ F:	Documentation/devicetree/bindings/i2c/renesas,iic.txt
 F:	drivers/i2c/busses/i2c-rcar.c
 F:	drivers/i2c/busses/i2c-sh_mobile.c
 
+RENESAS R-CAR THERMAL DRIVERS
+M:	Niklas Söderlund <niklas.soderlund@ragnatech.se>
+L:	linux-renesas-soc@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.txt
+F:	Documentation/devicetree/bindings/thermal/rcar-thermal.txt
+F:	drivers/thermal/rcar_gen3_thermal.c
+F:	drivers/thermal/rcar_thermal.c
+
 RENESAS RIIC DRIVER
 M:	Chris Brandt <chris.brandt@renesas.com>
 S:	Supported

drivers/cpuidle/cpuidle-arm.c

@@ -8,6 +8,7 @@
 
 #define pr_fmt(fmt) "CPUidle arm: " fmt
 
+#include <linux/cpu_cooling.h>
 #include <linux/cpuidle.h>
 #include <linux/cpumask.h>
 #include <linux/cpu_pm.h>
@@ -124,6 +125,8 @@ static int __init arm_idle_init_cpu(int cpu)
 	if (ret)
 		goto out_kfree_drv;
 
+	cpuidle_cooling_register(drv);
+
 	return 0;
 
 out_kfree_drv:

drivers/cpuidle/cpuidle-psci.c

@@ -9,6 +9,7 @@
 #define pr_fmt(fmt) "CPUidle PSCI: " fmt
 
 #include <linux/cpuhotplug.h>
+#include <linux/cpu_cooling.h>
 #include <linux/cpuidle.h>
 #include <linux/cpumask.h>
 #include <linux/cpu_pm.h>
@@ -319,6 +320,8 @@ static int __init psci_idle_init_cpu(int cpu)
 	if (ret)
 		goto out_kfree_drv;
 
+	cpuidle_cooling_register(drv);
+
 	return 0;
 
 out_kfree_drv:

drivers/powercap/idle_inject.c

@@ -61,12 +61,14 @@ struct idle_inject_thread {
  * @timer: idle injection period timer
  * @idle_duration_us: duration of CPU idle time to inject
  * @run_duration_us: duration of CPU run time to allow
+ * @latency_us: max allowed latency
  * @cpumask: mask of CPUs affected by idle injection
  */
 struct idle_inject_device {
 	struct hrtimer timer;
 	unsigned int idle_duration_us;
 	unsigned int run_duration_us;
+	unsigned int latency_us;
 	unsigned long cpumask[];
 };
 
@@ -138,7 +140,8 @@ static void idle_inject_fn(unsigned int cpu)
 	 */
 	iit->should_run = 0;
 
-	play_idle(READ_ONCE(ii_dev->idle_duration_us));
+	play_idle_precise(READ_ONCE(ii_dev->idle_duration_us) * NSEC_PER_USEC,
+			  READ_ONCE(ii_dev->latency_us) * NSEC_PER_USEC);
 }
 
 /**
@@ -169,6 +172,16 @@ void idle_inject_get_duration(struct idle_inject_device *ii_dev,
 	*idle_duration_us = READ_ONCE(ii_dev->idle_duration_us);
 }
 
+/**
+ * idle_inject_set_latency - set the maximum latency allowed
+ * @latency_us: set the latency requirement for the idle state
+ */
+void idle_inject_set_latency(struct idle_inject_device *ii_dev,
+			     unsigned int latency_us)
+{
+	WRITE_ONCE(ii_dev->latency_us, latency_us);
+}
+
 /**
  * idle_inject_start - start idle injections
  * @ii_dev: idle injection control device structure
@@ -297,6 +310,7 @@ struct idle_inject_device *idle_inject_register(struct cpumask *cpumask)
 	cpumask_copy(to_cpumask(ii_dev->cpumask), cpumask);
 	hrtimer_init(&ii_dev->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 	ii_dev->timer.function = idle_inject_timer_fn;
+	ii_dev->latency_us = UINT_MAX;
 
 	for_each_cpu(cpu, to_cpumask(ii_dev->cpumask)) {
 

drivers/thermal/Kconfig

@@ -273,6 +273,16 @@ config IMX8MM_THERMAL
 	  cpufreq is used as the cooling device to throttle CPUs when the passive
 	  trip is crossed.
 
+config K3_THERMAL
+	tristate "Texas Instruments K3 thermal support"
+	depends on ARCH_K3 || COMPILE_TEST
+	help
+	  If you say yes here you get thermal support for the Texas Instruments
+	  K3 SoC family. The current chip supported is:
+	  - AM654
+
+	  This includes temperature reading functionality.
+
 config MAX77620_THERMAL
 	tristate "Temperature sensor driver for Maxim MAX77620 PMIC"
 	depends on MFD_MAX77620
@@ -285,8 +295,8 @@ config MAX77620_THERMAL
 
 config QORIQ_THERMAL
 	tristate "QorIQ Thermal Monitoring Unit"
-	depends on THERMAL_OF
-	depends on HAS_IOMEM
+	depends on THERMAL_OF && HAS_IOMEM
+	depends on PPC_E500MC || SOC_LS1021A || ARCH_LAYERSCAPE || (ARCH_MXC && ARM64) || COMPILE_TEST
 	select REGMAP_MMIO
 	help
 	  Support for Thermal Monitoring Unit (TMU) found on QorIQ platforms.

drivers/thermal/Makefile

@@ -9,14 +9,14 @@ thermal_sys-y			+= thermal_core.o thermal_sysfs.o \
 
 # interface to/from other layers providing sensors
 thermal_sys-$(CONFIG_THERMAL_HWMON)		+= thermal_hwmon.o
-thermal_sys-$(CONFIG_THERMAL_OF)		+= of-thermal.o
+thermal_sys-$(CONFIG_THERMAL_OF)		+= thermal_of.o
 
 # governors
-thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
+thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= gov_fair_share.o
 thermal_sys-$(CONFIG_THERMAL_GOV_BANG_BANG)	+= gov_bang_bang.o
-thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= step_wise.o
-thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= user_space.o
-thermal_sys-$(CONFIG_THERMAL_GOV_POWER_ALLOCATOR)	+= power_allocator.o
+thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE)	+= gov_step_wise.o
+thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE)	+= gov_user_space.o
+thermal_sys-$(CONFIG_THERMAL_GOV_POWER_ALLOCATOR)	+= gov_power_allocator.o
 
 # cpufreq cooling
 thermal_sys-$(CONFIG_CPU_FREQ_THERMAL)	+= cpufreq_cooling.o
@@ -28,6 +28,7 @@ thermal_sys-$(CONFIG_CLOCK_THERMAL)	+= clock_cooling.o
 # devfreq cooling
 thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o
 
+obj-$(CONFIG_K3_THERMAL)	+= k3_bandgap.o
 # platform thermal drivers
 obj-y				+= broadcom/
 obj-$(CONFIG_THERMAL_MMIO)		+= thermal_mmio.o

drivers/thermal/clock_cooling.c

@@ -12,15 +12,16 @@
  *  Copyright (C) 2012  Amit Daniel <amit.kachhap@linaro.org>
  */
 #include <linux/clk.h>
+#include <linux/clock_cooling.h>
 #include <linux/cpufreq.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/export.h>
 #include <linux/idr.h>
 #include <linux/mutex.h>
 #include <linux/pm_opp.h>
 #include <linux/slab.h>
 #include <linux/thermal.h>
-#include <linux/clock_cooling.h>
 
 /**
  * struct clock_cooling_device - data for cooling device with clock

drivers/thermal/cpufreq_cooling.c

@@ -10,17 +10,17 @@
  *		Viresh Kumar <viresh.kumar@linaro.org>
  *
  */
-#include <linux/module.h>
-#include <linux/thermal.h>
+#include <linux/cpu.h>
 #include <linux/cpufreq.h>
+#include <linux/cpu_cooling.h>
+#include <linux/energy_model.h>
 #include <linux/err.h>
+#include <linux/export.h>
 #include <linux/idr.h>
 #include <linux/pm_opp.h>
 #include <linux/pm_qos.h>
 #include <linux/slab.h>
-#include <linux/cpu.h>
-#include <linux/cpu_cooling.h>
-#include <linux/energy_model.h>
+#include <linux/thermal.h>
 
 #include <trace/events/thermal.h>
 

drivers/thermal/cpuidle_cooling.c

@@ -5,11 +5,14 @@
  *  Author: Daniel Lezcano <daniel.lezcano@linaro.org>
  *
  */
+#define pr_fmt(fmt) "cpuidle cooling: " fmt
+
 #include <linux/cpu_cooling.h>
 #include <linux/cpuidle.h>
 #include <linux/err.h>
 #include <linux/idle_inject.h>
 #include <linux/idr.h>
+#include <linux/of_device.h>
 #include <linux/slab.h>
 #include <linux/thermal.h>
 
@@ -154,22 +157,25 @@ static struct thermal_cooling_device_ops cpuidle_cooling_ops = {
 };
 
 /**
- * cpuidle_of_cooling_register - Idle cooling device initialization function
+ * __cpuidle_cooling_register: register the cooling device
  * @drv: a cpuidle driver structure pointer
- * @np: a node pointer to a device tree cooling device node
+ * @np: a device node structure pointer used for the thermal binding
  *
- * This function is in charge of creating a cooling device per cpuidle
- * driver and register it to thermal framework.
+ * This function is in charge of allocating the cpuidle cooling device
+ * structure, the idle injection, initialize them and register the
+ * cooling device to the thermal framework.
  *
- * Return: zero on success, or negative value corresponding to the
- * error detected in the underlying subsystems.
+ * Return: zero on success, a negative value returned by one of the
+ * underlying subsystem in case of error
  */
-int cpuidle_of_cooling_register(struct device_node *np,
-				struct cpuidle_driver *drv)
+static int __cpuidle_cooling_register(struct device_node *np,
+				      struct cpuidle_driver *drv)
 {
 	struct idle_inject_device *ii_dev;
 	struct cpuidle_cooling_device *idle_cdev;
 	struct thermal_cooling_device *cdev;
+	unsigned int idle_duration_us = TICK_USEC;
+	unsigned int latency_us = UINT_MAX;
 	char dev_name[THERMAL_NAME_LENGTH];
 	int id, ret;
 
@@ -191,7 +197,11 @@ int cpuidle_of_cooling_register(struct device_node *np,
 		goto out_id;
 	}
 
-	idle_inject_set_duration(ii_dev, TICK_USEC, TICK_USEC);
+	of_property_read_u32(np, "duration-us", &idle_duration_us);
+	of_property_read_u32(np, "exit-latency-us", &latency_us);
+
+	idle_inject_set_duration(ii_dev, TICK_USEC, idle_duration_us);
+	idle_inject_set_latency(ii_dev, latency_us);
 
 	idle_cdev->ii_dev = ii_dev;
 
@@ -204,6 +214,9 @@ int cpuidle_of_cooling_register(struct device_node *np,
 		goto out_unregister;
 	}
 
+	pr_debug("%s: Idle injection set with idle duration=%u, latency=%u\n",
+		 dev_name, idle_duration_us, latency_us);
+
 	return 0;
 
 out_unregister:
@@ -221,12 +234,38 @@ int cpuidle_of_cooling_register(struct device_node *np,
  * @drv: a cpuidle driver structure pointer
  *
  * This function is in charge of creating a cooling device per cpuidle
- * driver and register it to thermal framework.
+ * driver and register it to the thermal framework.
  *
  * Return: zero on success, or negative value corresponding to the
  * error detected in the underlying subsystems.
  */
-int cpuidle_cooling_register(struct cpuidle_driver *drv)
+void cpuidle_cooling_register(struct cpuidle_driver *drv)
 {
-	return cpuidle_of_cooling_register(NULL, drv);
+	struct device_node *cooling_node;
+	struct device_node *cpu_node;
+	int cpu, ret;
+
+	for_each_cpu(cpu, drv->cpumask) {
+
+		cpu_node = of_cpu_device_node_get(cpu);
+
+		cooling_node = of_get_child_by_name(cpu_node, "thermal-idle");
+
+		of_node_put(cpu_node);
+
+		if (!cooling_node) {
+			pr_debug("'thermal-idle' node not found for cpu%d\n", cpu);
+			continue;
+		}
+
+		ret = __cpuidle_cooling_register(cooling_node, drv);
+
+		of_node_put(cooling_node);
+
+		if (ret) {
+			pr_err("Failed to register the cpuidle cooling device" \
+			       "for cpu%d: %d\n", cpu, ret);
+			break;
+		}
+	}
 }

drivers/thermal/devfreq_cooling.c

@@ -24,11 +24,13 @@
 #include <linux/idr.h>
 #include <linux/slab.h>
 #include <linux/pm_opp.h>
+#include <linux/pm_qos.h>
 #include <linux/thermal.h>
 
 #include <trace/events/thermal.h>
 
-#define SCALE_ERROR_MITIGATION 100
+#define HZ_PER_KHZ		1000
+#define SCALE_ERROR_MITIGATION	100
 
 static DEFINE_IDA(devfreq_ida);
 
@@ -54,6 +56,8 @@ static DEFINE_IDA(devfreq_ida);
  *		The 'res_util' range is from 100 to (power_table[state] * 100)
  *		for the corresponding 'state'.
  * @capped_state:	index to cooling state with in dynamic power budget
+ * @req_max_freq:	PM QoS request for limiting the maximum frequency
+ *			of the devfreq device.
  */
 struct devfreq_cooling_device {
 	int id;
@@ -66,49 +70,9 @@ struct devfreq_cooling_device {
 	struct devfreq_cooling_power *power_ops;
 	u32 res_util;
 	int capped_state;
+	struct dev_pm_qos_request req_max_freq;
 };
 
-/**
- * partition_enable_opps() - disable all opps above a given state
- * @dfc:	Pointer to devfreq we are operating on
- * @cdev_state:	cooling device state we're setting
- *
- * Go through the OPPs of the device, enabling all OPPs until
- * @cdev_state and disabling those frequencies above it.
- */
-static int partition_enable_opps(struct devfreq_cooling_device *dfc,
-				 unsigned long cdev_state)
-{
-	int i;
-	struct device *dev = dfc->devfreq->dev.parent;
-
-	for (i = 0; i < dfc->freq_table_size; i++) {
-		struct dev_pm_opp *opp;
-		int ret = 0;
-		unsigned int freq = dfc->freq_table[i];
-		bool want_enable = i >= cdev_state ? true : false;
-
-		opp = dev_pm_opp_find_freq_exact(dev, freq, !want_enable);
-
-		if (PTR_ERR(opp) == -ERANGE)
-			continue;
-		else if (IS_ERR(opp))
-			return PTR_ERR(opp);
-
-		dev_pm_opp_put(opp);
-
-		if (want_enable)
-			ret = dev_pm_opp_enable(dev, freq);
-		else
-			ret = dev_pm_opp_disable(dev, freq);
-
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
 static int devfreq_cooling_get_max_state(struct thermal_cooling_device *cdev,
 					 unsigned long *state)
 {
@@ -135,7 +99,7 @@ static int devfreq_cooling_set_cur_state(struct thermal_cooling_device *cdev,
 	struct devfreq_cooling_device *dfc = cdev->devdata;
 	struct devfreq *df = dfc->devfreq;
 	struct device *dev = df->dev.parent;
-	int ret;
+	unsigned long freq;
 
 	if (state == dfc->cooling_state)
 		return 0;
@@ -145,9 +109,10 @@ static int devfreq_cooling_set_cur_state(struct thermal_cooling_device *cdev,
 	if (state >= dfc->freq_table_size)
 		return -EINVAL;
 
-	ret = partition_enable_opps(dfc, state);
-	if (ret)
-		return ret;
+	freq = dfc->freq_table[state];
+
+	dev_pm_qos_update_request(&dfc->req_max_freq,
+				  DIV_ROUND_UP(freq, HZ_PER_KHZ));
 
 	dfc->cooling_state = state;
 
@@ -530,9 +495,15 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
 	if (err)
 		goto free_dfc;
 
-	err = ida_simple_get(&devfreq_ida, 0, 0, GFP_KERNEL);
+	err = dev_pm_qos_add_request(df->dev.parent, &dfc->req_max_freq,
+				     DEV_PM_QOS_MAX_FREQUENCY,
+				     PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE);
 	if (err < 0)
 		goto free_tables;
+
+	err = ida_simple_get(&devfreq_ida, 0, 0, GFP_KERNEL);
+	if (err < 0)
+		goto remove_qos_req;
 	dfc->id = err;
 
 	snprintf(dev_name, sizeof(dev_name), "thermal-devfreq-%d", dfc->id);
@@ -553,6 +524,10 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
 
 release_ida:
 	ida_simple_remove(&devfreq_ida, dfc->id);
+
+remove_qos_req:
+	dev_pm_qos_remove_request(&dfc->req_max_freq);
+
 free_tables:
 	kfree(dfc->power_table);
 	kfree(dfc->freq_table);
@@ -601,6 +576,7 @@ void devfreq_cooling_unregister(struct thermal_cooling_device *cdev)
 
 	thermal_cooling_device_unregister(dfc->cdev);
 	ida_simple_remove(&devfreq_ida, dfc->id);
+	dev_pm_qos_remove_request(&dfc->req_max_freq);
 	kfree(dfc->power_table);
 	kfree(dfc->freq_table);
 

drivers/thermal/user_space.c → drivers/thermal/gov_user_space.c

@@ -10,8 +10,8 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-#include <linux/thermal.h>
 #include <linux/slab.h>
+#include <linux/thermal.h>
 
 #include "thermal_core.h"
 

drivers/thermal/imx8mm_thermal.c

@@ -54,7 +54,7 @@ struct imx8mm_tmu {
 	void __iomem *base;
 	struct clk *clk;
 	const struct thermal_soc_data *socdata;
-	struct tmu_sensor sensors[0];
+	struct tmu_sensor sensors[];
 };
 
 static int imx8mm_tmu_get_temp(void *data, int *temp)

drivers/thermal/imx_sc_thermal.c

@@ -14,6 +14,7 @@
 #include <linux/thermal.h>
 
 #include "thermal_core.h"
+#include "thermal_hwmon.h"
 
 #define IMX_SC_MISC_FUNC_GET_TEMP	13
 
@@ -115,6 +116,9 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 			ret = PTR_ERR(sensor->tzd);
 			break;
 		}
+
+		if (devm_thermal_add_hwmon_sysfs(sensor->tzd))
+			dev_warn(&pdev->dev, "failed to add hwmon sysfs attributes\n");
 	}
 
 	of_node_put(sensor_np);

drivers/thermal/intel/int340x_thermal/int3400_thermal.c

@@ -13,6 +13,7 @@
 #include "acpi_thermal_rel.h"
 
 #define INT3400_THERMAL_TABLE_CHANGED 0x83
+#define INT3400_ODVP_CHANGED 0x88
 
 enum int3400_thermal_uuid {
 	INT3400_THERMAL_PASSIVE_1,
@@ -41,8 +42,11 @@ static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
 	"BE84BABF-C4D4-403D-B495-3128FD44dAC1",
 };
 
+struct odvp_attr;
+
 struct int3400_thermal_priv {
 	struct acpi_device *adev;
+	struct platform_device *pdev;
 	struct thermal_zone_device *thermal;
 	int mode;
 	int art_count;
@@ -52,6 +56,36 @@ struct int3400_thermal_priv {
 	u8 uuid_bitmap;
 	int rel_misc_dev_res;
 	int current_uuid_index;
+	char *data_vault;
+	int odvp_count;
+	int *odvp;
+	struct odvp_attr *odvp_attrs;
+};
+
+static int evaluate_odvp(struct int3400_thermal_priv *priv);
+
+struct odvp_attr {
+	int odvp;
+	struct int3400_thermal_priv *priv;
+	struct kobj_attribute attr;
+};
+
+static ssize_t data_vault_read(struct file *file, struct kobject *kobj,
+	     struct bin_attribute *attr, char *buf, loff_t off, size_t count)
+{
+	memcpy(buf, attr->private + off, count);
+	return count;
+}
+
+static BIN_ATTR_RO(data_vault, 0);
+
+static struct bin_attribute *data_attributes[] = {
+	&bin_attr_data_vault,
+	NULL,
+};
+
+static const struct attribute_group data_attribute_group = {
+	.bin_attrs = data_attributes,
 };
 
 static ssize_t available_uuids_show(struct device *dev,
@@ -62,6 +96,9 @@ static ssize_t available_uuids_show(struct device *dev,
 	int i;
 	int length = 0;
 
+	if (!priv->uuid_bitmap)
+		return sprintf(buf, "UNKNOWN\n");
+
 	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
 		if (priv->uuid_bitmap & (1 << i))
 			if (PAGE_SIZE - length > 0)
@@ -79,11 +116,11 @@ static ssize_t current_uuid_show(struct device *dev,
 {
 	struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
 
-	if (priv->uuid_bitmap & (1 << priv->current_uuid_index))
-		return sprintf(buf, "%s\n",
-			       int3400_thermal_uuids[priv->current_uuid_index]);
-	else
+	if (priv->current_uuid_index == -1)
 		return sprintf(buf, "INVALID\n");
+
+	return sprintf(buf, "%s\n",
+		       int3400_thermal_uuids[priv->current_uuid_index]);
 }
 
 static ssize_t current_uuid_store(struct device *dev,
@@ -94,9 +131,16 @@ static ssize_t current_uuid_store(struct device *dev,
 	int i;
 
 	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
-		if ((priv->uuid_bitmap & (1 << i)) &&
-		    !(strncmp(buf, int3400_thermal_uuids[i],
-			      sizeof(int3400_thermal_uuids[i]) - 1))) {
+		if (!strncmp(buf, int3400_thermal_uuids[i],
+			     sizeof(int3400_thermal_uuids[i]) - 1)) {
+			/*
+			 * If we have a list of supported UUIDs, make sure
+			 * this one is supported.
+			 */
+			if (priv->uuid_bitmap &&
+			    !(priv->uuid_bitmap & (1 << i)))
+				return -EINVAL;
+
 			priv->current_uuid_index = i;
 			return count;
 		}
@@ -191,9 +235,110 @@ static int int3400_thermal_run_osc(acpi_handle handle,
 		result = -EPERM;
 
 	kfree(context.ret.pointer);
+
 	return result;
 }
 
+static ssize_t odvp_show(struct kobject *kobj, struct kobj_attribute *attr,
+			 char *buf)
+{
+	struct odvp_attr *odvp_attr;
+
+	odvp_attr = container_of(attr, struct odvp_attr, attr);
+
+	return sprintf(buf, "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]);
+}
+
+static void cleanup_odvp(struct int3400_thermal_priv *priv)
+{
+	int i;
+
+	if (priv->odvp_attrs) {
+		for (i = 0; i < priv->odvp_count; i++) {
+			sysfs_remove_file(&priv->pdev->dev.kobj,
+					  &priv->odvp_attrs[i].attr.attr);
+			kfree(priv->odvp_attrs[i].attr.attr.name);
+		}
+		kfree(priv->odvp_attrs);
+	}
+	kfree(priv->odvp);
+	priv->odvp_count = 0;
+}
+
+static int evaluate_odvp(struct int3400_thermal_priv *priv)
+{
+	struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *obj = NULL;
+	acpi_status status;
+	int i, ret;
+
+	status = acpi_evaluate_object(priv->adev->handle, "ODVP", NULL, &odvp);
+	if (ACPI_FAILURE(status)) {
+		ret = -EINVAL;
+		goto out_err;
+	}
+
+	obj = odvp.pointer;
+	if (obj->type != ACPI_TYPE_PACKAGE) {
+		ret = -EINVAL;
+		goto out_err;
+	}
+
+	if (priv->odvp == NULL) {
+		priv->odvp_count = obj->package.count;
+		priv->odvp = kmalloc_array(priv->odvp_count, sizeof(int),
+				     GFP_KERNEL);
+		if (!priv->odvp) {
+			ret = -ENOMEM;
+			goto out_err;
+		}
+	}
+
+	if (priv->odvp_attrs == NULL) {
+		priv->odvp_attrs = kcalloc(priv->odvp_count,
+					   sizeof(struct odvp_attr),
+					   GFP_KERNEL);
+		if (!priv->odvp_attrs) {
+			ret = -ENOMEM;
+			goto out_err;
+		}
+		for (i = 0; i < priv->odvp_count; i++) {
+			struct odvp_attr *odvp = &priv->odvp_attrs[i];
+
+			sysfs_attr_init(&odvp->attr.attr);
+			odvp->priv = priv;
+			odvp->odvp = i;
+			odvp->attr.attr.name = kasprintf(GFP_KERNEL,
+							 "odvp%d", i);
+
+			if (!odvp->attr.attr.name) {
+				ret = -ENOMEM;
+				goto out_err;
+			}
+			odvp->attr.attr.mode = 0444;
+			odvp->attr.show = odvp_show;
+			odvp->attr.store = NULL;
+			ret = sysfs_create_file(&priv->pdev->dev.kobj,
+						&odvp->attr.attr);
+			if (ret)
+				goto out_err;
+		}
+	}
+
+	for (i = 0; i < obj->package.count; i++) {
+		if (obj->package.elements[i].type == ACPI_TYPE_INTEGER)
+			priv->odvp[i] = obj->package.elements[i].integer.value;
+	}
+
+	kfree(obj);
+	return 0;
+
+out_err:
+	cleanup_odvp(priv);
+	kfree(obj);
+	return ret;
+}
+
 static void int3400_notify(acpi_handle handle,
 			u32 event,
 			void *data)
@@ -217,6 +362,9 @@ static void int3400_notify(acpi_handle handle,
 		kobject_uevent_env(&priv->thermal->device.kobj, KOBJ_CHANGE,
 				thermal_prop);
 		break;
+	case INT3400_ODVP_CHANGED:
+		evaluate_odvp(priv);
+		break;
 	default:
 		/* Ignore unknown notification codes sent to INT3400 device */
 		break;
@@ -266,11 +414,16 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
 						 priv->current_uuid_index,
 						 enable);
 	}
+
+	evaluate_odvp(priv);
+
 	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,
 };
 
 static struct thermal_zone_params int3400_thermal_params = {
@@ -278,6 +431,32 @@ static struct thermal_zone_params int3400_thermal_params = {
 	.no_hwmon = true,
 };
 
+static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *obj;
+	acpi_status status;
+
+	status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL,
+				      &buffer);
+	if (ACPI_FAILURE(status) || !buffer.length)
+		return;
+
+	obj = buffer.pointer;
+	if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1
+	    || obj->package.elements[0].type != ACPI_TYPE_BUFFER) {
+		kfree(buffer.pointer);
+		return;
+	}
+
+	priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer,
+				   obj->package.elements[0].buffer.length,
+				   GFP_KERNEL);
+	bin_attr_data_vault.private = priv->data_vault;
+	bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
+	kfree(buffer.pointer);
+}
+
 static int int3400_thermal_probe(struct platform_device *pdev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
@@ -291,12 +470,17 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
+	priv->pdev = pdev;
 	priv->adev = adev;
 
 	result = int3400_thermal_get_uuids(priv);
-	if (result)
+
+	/* Missing IDSP isn't fatal */
+	if (result && result != -ENODEV)
 		goto free_priv;
 
+	priv->current_uuid_index = -1;
+
 	result = acpi_parse_art(priv->adev->handle, &priv->art_count,
 				&priv->arts, true);
 	if (result)
@@ -309,8 +493,9 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, priv);
 
-	int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
-	int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
+	int3400_setup_gddv(priv);
+
+	evaluate_odvp(priv);
 
 	priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
 						priv, &int3400_thermal_ops,
@@ -327,6 +512,13 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 	if (result)
 		goto free_rel_misc;
 
+	if (priv->data_vault) {
+		result = sysfs_create_group(&pdev->dev.kobj,
+					    &data_attribute_group);
+		if (result)
+			goto free_uuid;
+	}
+
 	result = acpi_install_notify_handler(
 			priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
 			(void *)priv);
@@ -336,6 +528,12 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 	return 0;
 
 free_sysfs:
+	cleanup_odvp(priv);
+	if (priv->data_vault) {
+		sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
+		kfree(priv->data_vault);
+	}
+free_uuid:
 	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 free_rel_misc:
 	if (!priv->rel_misc_dev_res)
@@ -357,11 +555,16 @@ static int int3400_thermal_remove(struct platform_device *pdev)
 			priv->adev->handle, ACPI_DEVICE_NOTIFY,
 			int3400_notify);
 
+	cleanup_odvp(priv);
+
 	if (!priv->rel_misc_dev_res)
 		acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 
+	if (priv->data_vault)
+		sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
 	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 	thermal_zone_device_unregister(priv->thermal);
+	kfree(priv->data_vault);
 	kfree(priv->trts);
 	kfree(priv->arts);
 	kfree(priv);

drivers/thermal/k3_bandgap.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * TI Bandgap temperature sensor driver for K3 SoC Family
+ *
+ * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/thermal.h>
+#include <linux/types.h>
+
+#define K3_VTM_DEVINFO_PWR0_OFFSET		0x4
+#define K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK	0xf0
+#define K3_VTM_TMPSENS0_CTRL_OFFSET	0x80
+#define K3_VTM_REGS_PER_TS			0x10
+#define K3_VTM_TS_STAT_DTEMP_MASK	0x3ff
+#define K3_VTM_TMPSENS_CTRL_CBIASSEL	BIT(0)
+#define K3_VTM_TMPSENS_CTRL_SOC		BIT(5)
+#define K3_VTM_TMPSENS_CTRL_CLRZ		BIT(6)
+#define K3_VTM_TMPSENS_CTRL_CLKON_REQ	BIT(7)
+
+#define K3_VTM_ADC_BEGIN_VAL		540
+#define K3_VTM_ADC_END_VAL		944
+
+static const int k3_adc_to_temp[] = {
+	-40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200,
+	-37800, -37400, -37000, -36600, -36200, -35800, -35300, -34700, -34200,
+	-33800, -33400, -33000, -32600, -32200, -31800, -31400, -31000, -30600,
+	-30200, -29800, -29400, -29000, -28600, -28200, -27700, -27100, -26600,
+	-26200, -25800, -25400, -25000, -24600, -24200, -23800, -23400, -23000,
+	-22600, -22200, -21800, -21400, -21000, -20500, -19900, -19400, -19000,
+	-18600, -18200, -17800, -17400, -17000, -16600, -16200, -15800, -15400,
+	-15000, -14600, -14200, -13800, -13400, -13000, -12500, -11900, -11400,
+	-11000, -10600, -10200, -9800, -9400, -9000, -8600, -8200, -7800, -7400,
+	-7000, -6600, -6200, -5800, -5400, -5000, -4500, -3900, -3400, -3000,
+	-2600, -2200, -1800, -1400, -1000, -600, -200, 200, 600, 1000, 1400,
+	1800, 2200, 2600, 3000, 3400, 3900, 4500, 5000, 5400, 5800, 6200, 6600,
+	7000, 7400, 7800, 8200, 8600, 9000, 9400, 9800, 10200, 10600, 11000,
+	11400, 11800, 12200, 12700, 13300, 13800, 14200, 14600, 15000, 15400,
+	15800, 16200, 16600, 17000, 17400, 17800, 18200, 18600, 19000, 19400,
+	19800, 20200, 20600, 21000, 21400, 21900, 22500, 23000, 23400, 23800,
+	24200, 24600, 25000, 25400, 25800, 26200, 26600, 27000, 27400, 27800,
+	28200, 28600, 29000, 29400, 29800, 30200, 30600, 31000, 31400, 31900,
+	32500, 33000, 33400, 33800, 34200, 34600, 35000, 35400, 35800, 36200,
+	36600, 37000, 37400, 37800, 38200, 38600, 39000, 39400, 39800, 40200,
+	40600, 41000, 41400, 41800, 42200, 42600, 43100, 43700, 44200, 44600,
+	45000, 45400, 45800, 46200, 46600, 47000, 47400, 47800, 48200, 48600,
+	49000, 49400, 49800, 50200, 50600, 51000, 51400, 51800, 52200, 52600,
+	53000, 53400, 53800, 54200, 54600, 55000, 55400, 55900, 56500, 57000,
+	57400, 57800, 58200, 58600, 59000, 59400, 59800, 60200, 60600, 61000,
+	61400, 61800, 62200, 62600, 63000, 63400, 63800, 64200, 64600, 65000,
+	65400, 65800, 66200, 66600, 67000, 67400, 67800, 68200, 68600, 69000,
+	69400, 69800, 70200, 70600, 71000, 71500, 72100, 72600, 73000, 73400,
+	73800, 74200, 74600, 75000, 75400, 75800, 76200, 76600, 77000, 77400,
+	77800, 78200, 78600, 79000, 79400, 79800, 80200, 80600, 81000, 81400,
+	81800, 82200, 82600, 83000, 83400, 83800, 84200, 84600, 85000, 85400,
+	85800, 86200, 86600, 87000, 87400, 87800, 88200, 88600, 89000, 89400,
+	89800, 90200, 90600, 91000, 91400, 91800, 92200, 92600, 93000, 93400,
+	93800, 94200, 94600, 95000, 95400, 95800, 96200, 96600, 97000, 97500,
+	98100, 98600, 99000, 99400, 99800, 100200, 100600, 101000, 101400,
+	101800, 102200, 102600, 103000, 103400, 103800, 104200, 104600, 105000,
+	105400, 105800, 106200, 106600, 107000, 107400, 107800, 108200, 108600,
+	109000, 109400, 109800, 110200, 110600, 111000, 111400, 111800, 112200,
+	112600, 113000, 113400, 113800, 114200, 114600, 115000, 115400, 115800,
+	116200, 116600, 117000, 117400, 117800, 118200, 118600, 119000, 119400,
+	119800, 120200, 120600, 121000, 121400, 121800, 122200, 122600, 123000,
+	123400, 123800, 124200, 124600, 124900, 125000,
+};
+
+struct k3_bandgap {
+	void __iomem *base;
+	const struct k3_bandgap_data *conf;
+};
+
+/* common data structures */
+struct k3_thermal_data {
+	struct thermal_zone_device *tzd;
+	struct k3_bandgap *bgp;
+	int sensor_id;
+	u32 ctrl_offset;
+	u32 stat_offset;
+};
+
+static unsigned int vtm_get_best_value(unsigned int s0, unsigned int s1,
+				       unsigned int s2)
+{
+	int d01 = abs(s0 - s1);
+	int d02 = abs(s0 - s2);
+	int d12 = abs(s1 - s2);
+
+	if (d01 <= d02 && d01 <= d12)
+		return (s0 + s1) / 2;
+
+	if (d02 <= d01 && d02 <= d12)
+		return (s0 + s2) / 2;
+
+	return (s1 + s2) / 2;
+}
+
+static int k3_bgp_read_temp(struct k3_thermal_data *devdata,
+			    int *temp)
+{
+	struct k3_bandgap *bgp;
+	unsigned int dtemp, s0, s1, s2;
+
+	bgp = devdata->bgp;
+
+	/*
+	 * Errata is applicable for am654 pg 1.0 silicon. There
+	 * is a variation of the order for 8-10 degree centigrade.
+	 * Work around that by getting the average of two closest
+	 * readings out of three readings everytime we want to
+	 * report temperatures.
+	 *
+	 * Errata workaround.
+	 */
+	s0 = readl(bgp->base + devdata->stat_offset) &
+		K3_VTM_TS_STAT_DTEMP_MASK;
+	s1 = readl(bgp->base + devdata->stat_offset) &
+		K3_VTM_TS_STAT_DTEMP_MASK;
+	s2 = readl(bgp->base + devdata->stat_offset) &
+		K3_VTM_TS_STAT_DTEMP_MASK;
+	dtemp = vtm_get_best_value(s0, s1, s2);
+
+	if (dtemp < K3_VTM_ADC_BEGIN_VAL || dtemp > K3_VTM_ADC_END_VAL)
+		return -EINVAL;
+
+	*temp = k3_adc_to_temp[dtemp - K3_VTM_ADC_BEGIN_VAL];
+
+	return 0;
+}
+
+static int k3_thermal_get_temp(void *devdata, int *temp)
+{
+	struct k3_thermal_data *data = devdata;
+	int ret = 0;
+
+	ret = k3_bgp_read_temp(data, temp);
+	if (ret)
+		return ret;
+
+	return ret;
+}
+
+static const struct thermal_zone_of_device_ops k3_of_thermal_ops = {
+	.get_temp = k3_thermal_get_temp,
+};
+
+static const struct of_device_id of_k3_bandgap_match[];
+
+static int k3_bandgap_probe(struct platform_device *pdev)
+{
+	int ret = 0, cnt, val, id;
+	struct resource *res;
+	struct device *dev = &pdev->dev;
+	struct k3_bandgap *bgp;
+	struct k3_thermal_data *data;
+
+	if (ARRAY_SIZE(k3_adc_to_temp) != (K3_VTM_ADC_END_VAL + 1 -
+						K3_VTM_ADC_BEGIN_VAL))
+		return -EINVAL;
+
+	bgp = devm_kzalloc(&pdev->dev, sizeof(*bgp), GFP_KERNEL);
+	if (!bgp)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	bgp->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(bgp->base))
+		return PTR_ERR(bgp->base);
+
+	pm_runtime_enable(dev);
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(dev);
+		pm_runtime_disable(dev);
+		return ret;
+	}
+
+	/* Get the sensor count in the VTM */
+	val = readl(bgp->base + K3_VTM_DEVINFO_PWR0_OFFSET);
+	cnt = val & K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK;
+	cnt >>= __ffs(K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK);
+
+	data = devm_kcalloc(dev, cnt, sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		ret = -ENOMEM;
+		goto err_alloc;
+	}
+
+	/* Register the thermal sensors */
+	for (id = 0; id < cnt; id++) {
+		data[id].sensor_id = id;
+		data[id].bgp = bgp;
+		data[id].ctrl_offset = K3_VTM_TMPSENS0_CTRL_OFFSET +
+					id * K3_VTM_REGS_PER_TS;
+		data[id].stat_offset = data[id].ctrl_offset + 0x8;
+
+		val = readl(data[id].bgp->base + data[id].ctrl_offset);
+		val |= (K3_VTM_TMPSENS_CTRL_SOC |
+			K3_VTM_TMPSENS_CTRL_CLRZ |
+			K3_VTM_TMPSENS_CTRL_CLKON_REQ);
+		val &= ~K3_VTM_TMPSENS_CTRL_CBIASSEL;
+		writel(val, data[id].bgp->base + data[id].ctrl_offset);
+
+		data[id].tzd =
+		devm_thermal_zone_of_sensor_register(dev, id,
+						     &data[id],
+						     &k3_of_thermal_ops);
+		if (IS_ERR(data[id].tzd)) {
+			dev_err(dev, "thermal zone device is NULL\n");
+			ret = PTR_ERR(data[id].tzd);
+			goto err_alloc;
+		}
+	}
+
+	platform_set_drvdata(pdev, bgp);
+
+	return 0;
+
+err_alloc:
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
+
+	return ret;
+}
+
+static int k3_bandgap_remove(struct platform_device *pdev)
+{
+	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static const struct of_device_id of_k3_bandgap_match[] = {
+	{
+		.compatible = "ti,am654-vtm",
+	},
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, of_k3_bandgap_match);
+
+static struct platform_driver k3_bandgap_sensor_driver = {
+	.probe = k3_bandgap_probe,
+	.remove = k3_bandgap_remove,
+	.driver = {
+		.name = "k3-soc-thermal",
+		.of_match_table	= of_k3_bandgap_match,
+	},
+};
+
+module_platform_driver(k3_bandgap_sensor_driver);
+
+MODULE_DESCRIPTION("K3 bandgap temperature sensor driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");

drivers/thermal/qcom/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_QCOM_TSENS)	+= qcom_tsens.o
 
-qcom_tsens-y			+= tsens.o tsens-common.o tsens-v0_1.o \
-				   tsens-8960.o tsens-v2.o tsens-v1.o
+qcom_tsens-y			+= tsens.o tsens-v2.o tsens-v1.o tsens-v0_1.o \
+				   tsens-8960.o
 obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM)	+= qcom-spmi-temp-alarm.o

drivers/thermal/qcom/tsens.h

@@ -580,11 +580,6 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mo
 int init_common(struct tsens_priv *priv);
 int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);
 int get_temp_common(const struct tsens_sensor *s, int *temp);
-int tsens_enable_irq(struct tsens_priv *priv);
-void tsens_disable_irq(struct tsens_priv *priv);
-int tsens_set_trips(void *_sensor, int low, int high);
-irqreturn_t tsens_irq_thread(int irq, void *data);
-irqreturn_t tsens_critical_irq_thread(int irq, void *data);
 
 /* TSENS target */
 extern struct tsens_plat_data data_8960;

drivers/thermal/qoriq_thermal.c

@@ -11,6 +11,7 @@
 #include <linux/regmap.h>
 #include <linux/sizes.h>
 #include <linux/thermal.h>
+#include <linux/units.h>
 
 #include "thermal_core.h"
 #include "thermal_hwmon.h"
@@ -23,6 +24,7 @@
 #define TMTMIR_DEFAULT	0x0000000f
 #define TIER_DISABLE	0x0
 #define TEUMR0_V2		0x51009c00
+#define TMSARA_V2		0xe
 #define TMU_VER1		0x1
 #define TMU_VER2		0x2
 
@@ -50,6 +52,9 @@
 					    * Site Register
 					    */
 #define TRITSR_V	BIT(31)
+#define REGS_V2_TMSAR(n)	(0x304 + 16 * (n))	/* TMU monitoring
+						* site adjustment register
+						*/
 #define REGS_TTRnCR(n)	(0xf10 + 4 * (n)) /* Temperature Range n
 					   * Control Register
 					   */
@@ -85,12 +90,21 @@ static int tmu_get_temp(void *p, int *temp)
 	/*
 	 * REGS_TRITSR(id) has the following layout:
 	 *
+	 * For TMU Rev1:
 	 * 31  ... 7 6 5 4 3 2 1 0
 	 *  V          TEMP
 	 *
 	 * Where V bit signifies if the measurement is ready and is
 	 * within sensor range. TEMP is an 8 bit value representing
-	 * temperature in C.
+	 * temperature in Celsius.
+
+	 * For TMU Rev2:
+	 * 31  ... 8 7 6 5 4 3 2 1 0
+	 *  V          TEMP
+	 *
+	 * Where V bit signifies if the measurement is ready and is
+	 * within sensor range. TEMP is an 9 bit value representing
+	 * temperature in KelVin.
 	 */
 	if (regmap_read_poll_timeout(qdata->regmap,
 				     REGS_TRITSR(qsensor->id),
@@ -100,7 +114,10 @@ static int tmu_get_temp(void *p, int *temp)
 				     10 * USEC_PER_MSEC))
 		return -ENODATA;
 
-	*temp = (val & 0xff) * 1000;
+	if (qdata->ver == TMU_VER1)
+		*temp = (val & GENMASK(7, 0)) * MILLIDEGREE_PER_DEGREE;
+	else
+		*temp = kelvin_to_millicelsius(val & GENMASK(8, 0));
 
 	return 0;
 }
@@ -192,6 +209,8 @@ static int qoriq_tmu_calibration(struct device *dev,
 
 static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
 {
+	int i;
+
 	/* Disable interrupt, using polling instead */
 	regmap_write(data->regmap, REGS_TIER, TIER_DISABLE);
 
@@ -202,6 +221,8 @@ static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
 	} else {
 		regmap_write(data->regmap, REGS_V2_TMTMIR, TMTMIR_DEFAULT);
 		regmap_write(data->regmap, REGS_V2_TEUMR(0), TEUMR0_V2);
+		for (i = 0; i < SITES_MAX; i++)
+			regmap_write(data->regmap, REGS_V2_TMSAR(i), TMSARA_V2);
 	}
 
 	/* Disable monitoring */
@@ -212,6 +233,7 @@ static const struct regmap_range qoriq_yes_ranges[] = {
 	regmap_reg_range(REGS_TMR, REGS_TSCFGR),
 	regmap_reg_range(REGS_TTRnCR(0), REGS_TTRnCR(3)),
 	regmap_reg_range(REGS_V2_TEUMR(0), REGS_V2_TEUMR(2)),
+	regmap_reg_range(REGS_V2_TMSAR(0), REGS_V2_TMSAR(15)),
 	regmap_reg_range(REGS_IPBRR(0), REGS_IPBRR(1)),
 	/* Read only registers below */
 	regmap_reg_range(REGS_TRITSR(0), REGS_TRITSR(15)),

drivers/thermal/rcar_thermal.c

@@ -198,8 +198,8 @@ static void _rcar_thermal_bset(struct rcar_thermal_priv *priv, u32 reg,
 static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
 {
 	struct device *dev = rcar_priv_to_dev(priv);
-	int i;
-	u32 ctemp, old, new;
+	int old, new, ctemp = -EINVAL;
+	unsigned int i;
 
 	mutex_lock(&priv->lock);
 
@@ -209,7 +209,6 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
 	 */
 	rcar_thermal_bset(priv, THSCR, CPCTL, CPCTL);
 
-	ctemp = 0;
 	old = ~0;
 	for (i = 0; i < 128; i++) {
 		/*
@@ -227,7 +226,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
 		old = new;
 	}
 
-	if (!ctemp) {
+	if (ctemp < 0) {
 		dev_err(dev, "thermal sensor was broken\n");
 		goto err_out_unlock;
 	}
@@ -248,7 +247,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
 err_out_unlock:
 	mutex_unlock(&priv->lock);
 
-	return ctemp ? ctemp : -EINVAL;
+	return ctemp;
 }
 
 static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,

drivers/thermal/rockchip_thermal.c

@@ -1241,10 +1241,8 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 		return -ENXIO;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "no irq resource?\n");
+	if (irq < 0)
 		return -EINVAL;
-	}
 
 	thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
 			       GFP_KERNEL);

drivers/thermal/st/st_thermal_memmap.c

@@ -94,10 +94,8 @@ static int st_mmap_register_enable_irq(struct st_thermal_sensor *sensor)
 	int ret;
 
 	sensor->irq = platform_get_irq(pdev, 0);
-	if (sensor->irq < 0) {
-		dev_err(dev, "failed to register IRQ\n");
+	if (sensor->irq < 0)
 		return sensor->irq;
-	}
 
 	ret = devm_request_threaded_irq(dev, sensor->irq,
 					NULL, st_mmap_thermal_trip_handler,

drivers/thermal/st/stm_thermal.c

@@ -385,10 +385,8 @@ static int stm_register_irq(struct stm_thermal_sensor *sensor)
 	int ret;
 
 	sensor->irq = platform_get_irq(pdev, 0);
-	if (sensor->irq < 0) {
-		dev_err(dev, "%s: Unable to find IRQ\n", __func__);
+	if (sensor->irq < 0)
 		return sensor->irq;
-	}
 
 	ret = devm_request_threaded_irq(dev, sensor->irq,
 					NULL,

drivers/thermal/thermal_core.c

@@ -9,9 +9,9 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/module.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/kdev_t.h>
 #include <linux/idr.h>
@@ -27,10 +27,6 @@
 #include "thermal_core.h"
 #include "thermal_hwmon.h"
 
-MODULE_AUTHOR("Zhang Rui");
-MODULE_DESCRIPTION("Generic thermal management sysfs support");
-MODULE_LICENSE("GPL v2");
-
 static DEFINE_IDA(thermal_tz_ida);
 static DEFINE_IDA(thermal_cdev_ida);
 
@@ -447,12 +443,6 @@ static void update_temperature(struct thermal_zone_device *tz)
 	mutex_unlock(&tz->lock);
 
 	trace_thermal_temperature(tz);
-	if (tz->last_temperature == THERMAL_TEMP_INVALID)
-		dev_dbg(&tz->device, "last_temperature N/A, current_temperature=%d\n",
-			tz->temperature);
-	else
-		dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
-			tz->last_temperature, tz->temperature);
 }
 
 static void thermal_zone_device_init(struct thermal_zone_device *tz)

drivers/thermal/thermal_core.h

@@ -12,6 +12,17 @@
 #include <linux/device.h>
 #include <linux/thermal.h>
 
+/* Default Thermal Governor */
+#if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE)
+#define DEFAULT_THERMAL_GOVERNOR       "step_wise"
+#elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE)
+#define DEFAULT_THERMAL_GOVERNOR       "fair_share"
+#elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE)
+#define DEFAULT_THERMAL_GOVERNOR       "user_space"
+#elif defined(CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR)
+#define DEFAULT_THERMAL_GOVERNOR       "power_allocator"
+#endif
+
 /* Initial state of a cooling device during binding */
 #define THERMAL_NO_TARGET -1UL
 
@@ -30,6 +41,44 @@ extern struct thermal_governor *__governor_thermal_table_end[];
 	     __governor < __governor_thermal_table_end;	\
 	     __governor++)
 
+struct thermal_attr {
+	struct device_attribute attr;
+	char name[THERMAL_NAME_LENGTH];
+};
+
+static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
+{
+	return cdev->ops->get_requested_power && cdev->ops->state2power &&
+		cdev->ops->power2state;
+}
+
+int power_actor_get_max_power(struct thermal_cooling_device *cdev,
+			      struct thermal_zone_device *tz, u32 *max_power);
+int power_actor_get_min_power(struct thermal_cooling_device *cdev,
+			      struct thermal_zone_device *tz, u32 *min_power);
+int power_actor_set_power(struct thermal_cooling_device *cdev,
+			  struct thermal_instance *ti, u32 power);
+/**
+ * struct thermal_trip - representation of a point in temperature domain
+ * @np: pointer to struct device_node that this trip point was created from
+ * @temperature: temperature value in miliCelsius
+ * @hysteresis: relative hysteresis in miliCelsius
+ * @type: trip point type
+ */
+struct thermal_trip {
+	struct device_node *np;
+	int temperature;
+	int hysteresis;
+	enum thermal_trip_type type;
+};
+
+int get_tz_trend(struct thermal_zone_device *tz, int trip);
+
+struct thermal_instance *
+get_thermal_instance(struct thermal_zone_device *tz,
+		     struct thermal_cooling_device *cdev,
+		     int trip);
+
 /*
  * This structure is used to describe the behavior of
  * a certain cooling device on a certain trip point
@@ -69,6 +118,9 @@ void thermal_zone_device_unbind_exception(struct thermal_zone_device *,
 int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
 int thermal_build_list_of_policies(char *buf);
 
+/* Helpers */
+void thermal_zone_set_trips(struct thermal_zone_device *tz);
+
 /* sysfs I/F */
 int thermal_zone_create_device_groups(struct thermal_zone_device *, int);
 void thermal_zone_destroy_device_groups(struct thermal_zone_device *);

drivers/thermal/thermal_helpers.c

@@ -12,11 +12,12 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/sysfs.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/sysfs.h>
 
 #include <trace/events/thermal.h>
 
@@ -113,6 +114,18 @@ int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
 }
 EXPORT_SYMBOL_GPL(thermal_zone_get_temp);
 
+/**
+ * thermal_zone_set_trips - Computes the next trip points for the driver
+ * @tz: a pointer to a thermal zone device structure
+ *
+ * The function computes the next temperature boundaries by browsing
+ * the trip points. The result is the closer low and high trip points
+ * to the current temperature. These values are passed to the backend
+ * driver to let it set its own notification mechanism (usually an
+ * interrupt).
+ *
+ * It does not return a value
+ */
 void thermal_zone_set_trips(struct thermal_zone_device *tz)
 {
 	int low = -INT_MAX;
@@ -161,7 +174,6 @@ void thermal_zone_set_trips(struct thermal_zone_device *tz)
 exit:
 	mutex_unlock(&tz->lock);
 }
-EXPORT_SYMBOL_GPL(thermal_zone_set_trips);
 
 void thermal_cdev_update(struct thermal_cooling_device *cdev)
 {

drivers/thermal/thermal_hwmon.c

@@ -10,10 +10,12 @@
  *  Copyright (C) 2013 Texas Instruments
  *  Copyright (C) 2013 Eduardo Valentin <eduardo.valentin@ti.com>
  */
+#include <linux/err.h>
+#include <linux/export.h>
 #include <linux/hwmon.h>
-#include <linux/thermal.h>
 #include <linux/slab.h>
-#include <linux/err.h>
+#include <linux/thermal.h>
+
 #include "thermal_hwmon.h"
 
 /* hwmon sys I/F */

drivers/thermal/of-thermal.c → drivers/thermal/thermal_of.c

@@ -8,13 +8,13 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/thermal.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
 #include <linux/err.h>
 #include <linux/export.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/slab.h>
+#include <linux/thermal.h>
+#include <linux/types.h>
 #include <linux/string.h>
 
 #include "thermal_core.h"

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

@@ -772,10 +772,9 @@ static int ti_bandgap_talert_init(struct ti_bandgap *bgp,
 	int ret;
 
 	bgp->irq = platform_get_irq(pdev, 0);
-	if (bgp->irq < 0) {
-		dev_err(&pdev->dev, "get_irq failed\n");
+	if (bgp->irq < 0)
 		return bgp->irq;
-	}
+
 	ret = request_threaded_irq(bgp->irq, NULL,
 				   ti_bandgap_talert_irq_handler,
 				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,

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

@@ -169,7 +169,7 @@ int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
 
 	data = ti_bandgap_get_sensor_data(bgp, id);
 
-	if (!data || IS_ERR(data))
+	if (!IS_ERR_OR_NULL(data))
 		data = ti_thermal_build_data(bgp, id);
 
 	if (!data)
@@ -196,7 +196,7 @@ int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
 
 	data = ti_bandgap_get_sensor_data(bgp, id);
 
-	if (data && data->ti_thermal) {
+	if (!IS_ERR_OR_NULL(data) && data->ti_thermal) {
 		if (data->our_zone)
 			thermal_zone_device_unregister(data->ti_thermal);
 	}
@@ -262,7 +262,7 @@ int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
 
 	data = ti_bandgap_get_sensor_data(bgp, id);
 
-	if (data) {
+	if (!IS_ERR_OR_NULL(data)) {
 		cpufreq_cooling_unregister(data->cool_dev);
 		if (data->policy)
 			cpufreq_cpu_put(data->policy);

include/linux/cpu_cooling.h

@@ -63,18 +63,10 @@ of_cpufreq_cooling_register(struct cpufreq_policy *policy)
 struct cpuidle_driver;
 
 #ifdef CONFIG_CPU_IDLE_THERMAL
-int cpuidle_cooling_register(struct cpuidle_driver *drv);
-int cpuidle_of_cooling_register(struct device_node *np,
-				struct cpuidle_driver *drv);
+void cpuidle_cooling_register(struct cpuidle_driver *drv);
 #else /* CONFIG_CPU_IDLE_THERMAL */
-static inline int cpuidle_cooling_register(struct cpuidle_driver *drv)
+static inline void cpuidle_cooling_register(struct cpuidle_driver *drv)
 {
-	return 0;
-}
-static inline int cpuidle_of_cooling_register(struct device_node *np,
-					      struct cpuidle_driver *drv)
-{
-	return 0;
 }
 #endif /* CONFIG_CPU_IDLE_THERMAL */
 

include/linux/idle_inject.h

@@ -26,4 +26,8 @@ void idle_inject_set_duration(struct idle_inject_device *ii_dev,
 void idle_inject_get_duration(struct idle_inject_device *ii_dev,
 				 unsigned int *run_duration_us,
 				 unsigned int *idle_duration_us);
+
+void idle_inject_set_latency(struct idle_inject_device *ii_dev,
+			     unsigned int latency_ns);
+
 #endif /* __IDLE_INJECT_H__ */

include/linux/thermal.h

@@ -32,20 +32,10 @@
 /* use value, which < 0K, to indicate an invalid/uninitialized temperature */
 #define THERMAL_TEMP_INVALID	-274000
 
-/* Default Thermal Governor */
-#if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE)
-#define DEFAULT_THERMAL_GOVERNOR       "step_wise"
-#elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE)
-#define DEFAULT_THERMAL_GOVERNOR       "fair_share"
-#elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE)
-#define DEFAULT_THERMAL_GOVERNOR       "user_space"
-#elif defined(CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR)
-#define DEFAULT_THERMAL_GOVERNOR       "power_allocator"
-#endif
-
 struct thermal_zone_device;
 struct thermal_cooling_device;
 struct thermal_instance;
+struct thermal_attr;
 
 enum thermal_device_mode {
 	THERMAL_DEVICE_DISABLED = 0,
@@ -130,11 +120,6 @@ struct thermal_cooling_device {
 	struct list_head node;
 };
 
-struct thermal_attr {
-	struct device_attribute attr;
-	char name[THERMAL_NAME_LENGTH];
-};
-
 /**
  * struct thermal_zone_device - structure for a thermal zone
  * @id:		unique id number for each thermal zone
@@ -347,21 +332,6 @@ struct thermal_zone_of_device_ops {
 	int (*set_trip_temp)(void *, int, int);
 };
 
-/**
- * struct thermal_trip - representation of a point in temperature domain
- * @np: pointer to struct device_node that this trip point was created from
- * @temperature: temperature value in miliCelsius
- * @hysteresis: relative hysteresis in miliCelsius
- * @type: trip point type
- */
-
-struct thermal_trip {
-	struct device_node *np;
-	int temperature;
-	int hysteresis;
-	enum thermal_trip_type type;
-};
-
 /* Function declarations */
 #ifdef CONFIG_THERMAL_OF
 int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
@@ -413,19 +383,7 @@ void devm_thermal_zone_of_sensor_unregister(struct device *dev,
 
 #endif
 
-#if IS_ENABLED(CONFIG_THERMAL)
-static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
-{
-	return cdev->ops->get_requested_power && cdev->ops->state2power &&
-		cdev->ops->power2state;
-}
-
-int power_actor_get_max_power(struct thermal_cooling_device *,
-			      struct thermal_zone_device *tz, u32 *max_power);
-int power_actor_get_min_power(struct thermal_cooling_device *,
-			      struct thermal_zone_device *tz, u32 *min_power);
-int power_actor_set_power(struct thermal_cooling_device *,
-			  struct thermal_instance *, u32);
+#ifdef CONFIG_THERMAL
 struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
 		void *, struct thermal_zone_device_ops *,
 		struct thermal_zone_params *, int, int);
@@ -439,7 +397,6 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
 				       struct thermal_cooling_device *);
 void thermal_zone_device_update(struct thermal_zone_device *,
 				enum thermal_notify_event);
-void thermal_zone_set_trips(struct thermal_zone_device *);
 
 struct thermal_cooling_device *thermal_cooling_device_register(const char *,
 		void *, const struct thermal_cooling_device_ops *);
@@ -457,24 +414,9 @@ int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp);
 int thermal_zone_get_slope(struct thermal_zone_device *tz);
 int thermal_zone_get_offset(struct thermal_zone_device *tz);
 
-int get_tz_trend(struct thermal_zone_device *, int);
-struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
-		struct thermal_cooling_device *, int);
 void thermal_cdev_update(struct thermal_cooling_device *);
 void thermal_notify_framework(struct thermal_zone_device *, int);
 #else
-static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
-{ return false; }
-static inline int power_actor_get_max_power(struct thermal_cooling_device *cdev,
-			      struct thermal_zone_device *tz, u32 *max_power)
-{ return 0; }
-static inline int power_actor_get_min_power(struct thermal_cooling_device *cdev,
-					    struct thermal_zone_device *tz,
-					    u32 *min_power)
-{ return -ENODEV; }
-static inline int power_actor_set_power(struct thermal_cooling_device *cdev,
-			  struct thermal_instance *tz, u32 power)
-{ return 0; }
 static inline struct thermal_zone_device *thermal_zone_device_register(
 	const char *type, int trips, int mask, void *devdata,
 	struct thermal_zone_device_ops *ops,
@@ -484,21 +426,6 @@ static inline struct thermal_zone_device *thermal_zone_device_register(
 static inline void thermal_zone_device_unregister(
 	struct thermal_zone_device *tz)
 { }
-static inline int thermal_zone_bind_cooling_device(
-	struct thermal_zone_device *tz, int trip,
-	struct thermal_cooling_device *cdev,
-	unsigned long upper, unsigned long lower,
-	unsigned int weight)
-{ return -ENODEV; }
-static inline int thermal_zone_unbind_cooling_device(
-	struct thermal_zone_device *tz, int trip,
-	struct thermal_cooling_device *cdev)
-{ return -ENODEV; }
-static inline void thermal_zone_device_update(struct thermal_zone_device *tz,
-					      enum thermal_notify_event event)
-{ }
-static inline void thermal_zone_set_trips(struct thermal_zone_device *tz)
-{ }
 static inline struct thermal_cooling_device *
 thermal_cooling_device_register(char *type, void *devdata,
 	const struct thermal_cooling_device_ops *ops)
@@ -530,12 +457,7 @@ static inline int thermal_zone_get_slope(
 static inline int thermal_zone_get_offset(
 		struct thermal_zone_device *tz)
 { return -ENODEV; }
-static inline int get_tz_trend(struct thermal_zone_device *tz, int trip)
-{ return -ENODEV; }
-static inline struct thermal_instance *
-get_thermal_instance(struct thermal_zone_device *tz,
-	struct thermal_cooling_device *cdev, int trip)
-{ return ERR_PTR(-ENODEV); }
+
 static inline void thermal_cdev_update(struct thermal_cooling_device *cdev)
 { }
 static inline void thermal_notify_framework(struct thermal_zone_device *tz,