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Commit 4617c220 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 

Pull thermal management fixes from Eduardo Valentin:
 "Specifics in this pull request:

   - Compilation fixes on SPEAR, and U8500 thermal drivers.
   - RCAR thermal driver now recognizes OF-thermal based thermal zones.
   - Small code rework on OF-thermal.
   - These change have been CI tested using KernelCI bot [1,2].  \o/

  I am taking over on Rui's behalf while he is out.  Happy New Chinese
  Year!

  [1] - https://kernelci.org/build/evalenti/kernel/v4.5-rc3-16-ga53b8394ec3c/
  [2] - https://kernelci.org/boot/all/job/evalenti/kernel/v4.5-rc3-16-ga53b8394ec3c/"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: cpu_cooling: fix out of bounds access in time_in_idle
  thermal: allow u8500-thermal driver to be a module
  thermal: allow spear-thermal driver to be a module
  thermal: spear: use __maybe_unused for PM functions
  thermal: rcar: enable to use thermal-zone on DT
  thermal: of: use for_each_available_child_of_node for child iterator
parents b4e4334d a53b8394

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

+35 −2
Original line number Diff line number Diff line 
* Renesas R-Car Thermal



Required properties:

- compatible		: "renesas,thermal-<soctype>", "renesas,rcar-thermal"

			  as fallback.

- compatible		: "renesas,thermal-<soctype>",

			   "renesas,rcar-gen2-thermal" (with thermal-zone) or

			   "renesas,rcar-thermal" (without thermal-zone) as fallback.

			  Examples with soctypes are:

			    - "renesas,thermal-r8a73a4" (R-Mobile APE6)

			    - "renesas,thermal-r8a7779" (R-Car H1)
@@ -36,3 +37,35 @@ thermal@e61f0000 { 
		0xe61f0300 0x38>;

	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;

};



Example (with thermal-zone):



thermal-zones {

	cpu_thermal: cpu-thermal {

		polling-delay-passive	= <1000>;

		polling-delay		= <5000>;



		thermal-sensors = <&thermal>;



		trips {

			cpu-crit {

				temperature	= <115000>;

				hysteresis	= <0>;

				type		= "critical";

			};

		};

		cooling-maps {

		};

	};

};



thermal: thermal@e61f0000 {

	compatible =	"renesas,thermal-r8a7790",

			"renesas,rcar-gen2-thermal",

			"renesas,rcar-thermal";

	reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;

	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;

	clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;

	power-domains = <&cpg_clocks>;

	#thermal-sensor-cells = <0>;

};

drivers/mfd/db8500-prcmu.c

+3 −0
Original line number Diff line number Diff line
@@ -2048,6 +2048,7 @@ int db8500_prcmu_config_hotmon(u8 low, u8 high) 


	return 0;

}

EXPORT_SYMBOL_GPL(db8500_prcmu_config_hotmon);



static int config_hot_period(u16 val)

{
@@ -2074,11 +2075,13 @@ int db8500_prcmu_start_temp_sense(u16 cycles32k) 


	return config_hot_period(cycles32k);

}

EXPORT_SYMBOL_GPL(db8500_prcmu_start_temp_sense);



int db8500_prcmu_stop_temp_sense(void)

{

	return config_hot_period(0xFFFF);

}

EXPORT_SYMBOL_GPL(db8500_prcmu_stop_temp_sense);



static int prcmu_a9wdog(u8 cmd, u8 d0, u8 d1, u8 d2, u8 d3)

{

drivers/thermal/Kconfig

+3 −3
Original line number Diff line number Diff line
@@ -195,7 +195,7 @@ config IMX_THERMAL 
	  passive trip is crossed.



config SPEAR_THERMAL

	bool "SPEAr thermal sensor driver"

	tristate "SPEAr thermal sensor driver"

	depends on PLAT_SPEAR || COMPILE_TEST

	depends on OF

	help
@@ -237,8 +237,8 @@ config DOVE_THERMAL 
	  framework.



config DB8500_THERMAL

	bool "DB8500 thermal management"

	depends on ARCH_U8500

	tristate "DB8500 thermal management"

	depends on MFD_DB8500_PRCMU

	default y

	help

	  Adds DB8500 thermal management implementation according to the thermal

drivers/thermal/cpu_cooling.c

+8 −6
Original line number Diff line number Diff line
@@ -377,26 +377,28 @@ static u32 cpu_power_to_freq(struct cpufreq_cooling_device *cpufreq_device, 
 * get_load() - get load for a cpu since last updated

 * @cpufreq_device:	&struct cpufreq_cooling_device for this cpu

 * @cpu:	cpu number

 * @cpu_idx:	index of the cpu in cpufreq_device->allowed_cpus

 *

 * Return: The average load of cpu @cpu in percentage since this

 * function was last called.

 */

static u32 get_load(struct cpufreq_cooling_device *cpufreq_device, int cpu)

static u32 get_load(struct cpufreq_cooling_device *cpufreq_device, int cpu,

		    int cpu_idx)

{

	u32 load;

	u64 now, now_idle, delta_time, delta_idle;



	now_idle = get_cpu_idle_time(cpu, &now, 0);

	delta_idle = now_idle - cpufreq_device->time_in_idle[cpu];

	delta_time = now - cpufreq_device->time_in_idle_timestamp[cpu];

	delta_idle = now_idle - cpufreq_device->time_in_idle[cpu_idx];

	delta_time = now - cpufreq_device->time_in_idle_timestamp[cpu_idx];



	if (delta_time <= delta_idle)

		load = 0;

	else

		load = div64_u64(100 * (delta_time - delta_idle), delta_time);



	cpufreq_device->time_in_idle[cpu] = now_idle;

	cpufreq_device->time_in_idle_timestamp[cpu] = now;

	cpufreq_device->time_in_idle[cpu_idx] = now_idle;

	cpufreq_device->time_in_idle_timestamp[cpu_idx] = now;



	return load;

}
@@ -598,7 +600,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev, 
		u32 load;



		if (cpu_online(cpu))

			load = get_load(cpufreq_device, cpu);

			load = get_load(cpufreq_device, cpu, i);

		else

			load = 0;

drivers/thermal/of-thermal.c

+3 −15
Original line number Diff line number Diff line
@@ -475,14 +475,10 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data, 


	sensor_np = of_node_get(dev->of_node);



	for_each_child_of_node(np, child) {

	for_each_available_child_of_node(np, child) {

		struct of_phandle_args sensor_specs;

		int ret, id;



		/* Check whether child is enabled or not */

		if (!of_device_is_available(child))

			continue;



		/* For now, thermal framework supports only 1 sensor per zone */

		ret = of_parse_phandle_with_args(child, "thermal-sensors",

						 "#thermal-sensor-cells",
@@ -881,16 +877,12 @@ int __init of_parse_thermal_zones(void) 
		return 0; /* Run successfully on systems without thermal DT */

	}



	for_each_child_of_node(np, child) {

	for_each_available_child_of_node(np, child) {

		struct thermal_zone_device *zone;

		struct thermal_zone_params *tzp;

		int i, mask = 0;

		u32 prop;



		/* Check whether child is enabled or not */

		if (!of_device_is_available(child))

			continue;



		tz = thermal_of_build_thermal_zone(child);

		if (IS_ERR(tz)) {

			pr_err("failed to build thermal zone %s: %ld\n",
@@ -968,13 +960,9 @@ void of_thermal_destroy_zones(void) 
		return;

	}



	for_each_child_of_node(np, child) {

	for_each_available_child_of_node(np, child) {

		struct thermal_zone_device *zone;



		/* Check whether child is enabled or not */

		if (!of_device_is_available(child))

			continue;



		zone = thermal_zone_get_zone_by_name(child->name);

		if (IS_ERR(zone))

			continue;