Commit ced255c0 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

Pull thermal management fixes from Zhang Rui:

 - Power allocator governor changes to allow binding on thermal zones
   with missing power estimates information.  From Javi Merino.

 - Add compile test flags on thermal drivers that allow it without
   producing compilation errors.  From Eduardo Valentin.

 - Fixes around memory allocation on cpu_cooling.  From Javi Merino.

 - Fix on db8500 cpufreq code to allow autoload.  From Luis de
   Bethencourt.

 - Maintainer entries for cpu cooling device

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: power_allocator: exit early if there are no cooling devices
  thermal: power_allocator: don't require tzp to be present for the thermal zone
  thermal: power_allocator: relax the requirement of two passive trip points
  thermal: power_allocator: relax the requirement of a sustainable_power in tzp
  thermal: Add a function to get the minimum power
  thermal: cpu_cooling: free power table on error or when unregistering
  thermal: cpu_cooling: don't call kcalloc() under rcu_read_lock
  thermal: db8500_cpufreq_cooling: Fix module autoload for OF platform driver
  thermal: cpu_cooling: Add MAINTAINERS entry
  thermal: ti-soc: Kconfig fix to avoid menu showing wrongly
  thermal: ti-soc: allow compile test
  thermal: qcom_spmi: allow compile test
  thermal: exynos: allow compile test
  thermal: armada: allow compile test
  thermal: dove: allow compile test
  thermal: kirkwood: allow compile test
  thermal: rockchip: allow compile test
  thermal: spear: allow compile test
  thermal: hisi: allow compile test
  thermal: Fix thermal_zone_of_sensor_register to match documentation
parents 4401555a 97584d18

Documentation/thermal/power_allocator.txt

+1 −1
Original line number Diff line number Diff line
@@ -4,7 +4,7 @@ Power allocator governor tunables 
Trip points

-----------



The governor requires the following two passive trip points:

The governor works optimally with the following two passive trip points:



1.  "switch on" trip point: temperature above which the governor

    control loop starts operating.  This is the first passive trip

MAINTAINERS

+10 −0
Original line number Diff line number Diff line
@@ -10338,6 +10338,16 @@ F: include/uapi/linux/thermal.h 
F:	include/linux/cpu_cooling.h

F:	Documentation/devicetree/bindings/thermal/



THERMAL/CPU_COOLING

M:	Amit Daniel Kachhap <amit.kachhap@gmail.com>

M:	Viresh Kumar <viresh.kumar@linaro.org>

M:	Javi Merino <javi.merino@arm.com>

L:	linux-pm@vger.kernel.org

S:	Supported

F:	Documentation/thermal/cpu-cooling-api.txt

F:	drivers/thermal/cpu_cooling.c

F:	include/linux/cpu_cooling.h



THINGM BLINK(1) USB RGB LED DRIVER

M:	Vivien Didelot <vivien.didelot@savoirfairelinux.com>

S:	Maintained

drivers/thermal/Kconfig

+9 −8
Original line number Diff line number Diff line
@@ -163,7 +163,7 @@ config THERMAL_EMULATION 


config HISI_THERMAL

	tristate "Hisilicon thermal driver"

	depends on ARCH_HISI && CPU_THERMAL && OF

	depends on (ARCH_HISI && CPU_THERMAL && OF) || COMPILE_TEST

	help

	  Enable this to plug hisilicon's thermal sensor driver into the Linux

	  thermal framework. cpufreq is used as the cooling device to throttle
@@ -182,7 +182,7 @@ config IMX_THERMAL 


config SPEAR_THERMAL

	bool "SPEAr thermal sensor driver"

	depends on PLAT_SPEAR

	depends on PLAT_SPEAR || COMPILE_TEST

	depends on OF

	help

	  Enable this to plug the SPEAr thermal sensor driver into the Linux
@@ -190,7 +190,7 @@ config SPEAR_THERMAL 


config ROCKCHIP_THERMAL

	tristate "Rockchip thermal driver"

	depends on ARCH_ROCKCHIP

	depends on ARCH_ROCKCHIP || COMPILE_TEST

	depends on RESET_CONTROLLER

	help

	  Rockchip thermal driver provides support for Temperature sensor
@@ -208,7 +208,7 @@ config RCAR_THERMAL 


config KIRKWOOD_THERMAL

	tristate "Temperature sensor on Marvell Kirkwood SoCs"

	depends on MACH_KIRKWOOD

	depends on MACH_KIRKWOOD || COMPILE_TEST

	depends on OF

	help

	  Support for the Kirkwood thermal sensor driver into the Linux thermal
@@ -216,7 +216,7 @@ config KIRKWOOD_THERMAL 


config DOVE_THERMAL

	tristate "Temperature sensor on Marvell Dove SoCs"

	depends on ARCH_DOVE || MACH_DOVE

	depends on ARCH_DOVE || MACH_DOVE || COMPILE_TEST

	depends on OF

	help

	  Support for the Dove thermal sensor driver in the Linux thermal
@@ -234,7 +234,7 @@ config DB8500_THERMAL 


config ARMADA_THERMAL

	tristate "Armada 370/XP thermal management"

	depends on ARCH_MVEBU

	depends on ARCH_MVEBU || COMPILE_TEST

	depends on OF

	help

	  Enable this option if you want to have support for thermal management
@@ -349,11 +349,12 @@ config INTEL_PCH_THERMAL 
	  programmable trip points and other information.



menu "Texas Instruments thermal drivers"

depends on ARCH_HAS_BANDGAP || COMPILE_TEST

source "drivers/thermal/ti-soc-thermal/Kconfig"

endmenu



menu "Samsung thermal drivers"

depends on ARCH_EXYNOS

depends on ARCH_EXYNOS || COMPILE_TEST

source "drivers/thermal/samsung/Kconfig"

endmenu
@@ -364,7 +365,7 @@ endmenu 


config QCOM_SPMI_TEMP_ALARM

	tristate "Qualcomm SPMI PMIC Temperature Alarm"

	depends on OF && SPMI && IIO

	depends on OF && (SPMI || COMPILE_TEST) && IIO

	select REGMAP_SPMI

	help

	  This enables a thermal sysfs driver for Qualcomm plug-and-play (QPNP)

drivers/thermal/cpu_cooling.c

+31 −21
Original line number Diff line number Diff line
@@ -262,7 +262,9 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb, 
 * efficiently.  Power is stored in mW, frequency in KHz.  The

 * resulting table is in ascending order.

 *

 * Return: 0 on success, -E* on error.

 * Return: 0 on success, -EINVAL if there are no OPPs for any CPUs,

 * -ENOMEM if we run out of memory or -EAGAIN if an OPP was

 * added/enabled while the function was executing.

 */

static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,

				 u32 capacitance)
@@ -273,8 +275,6 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device, 
	int num_opps = 0, cpu, i, ret = 0;

	unsigned long freq;



	rcu_read_lock();



	for_each_cpu(cpu, &cpufreq_device->allowed_cpus) {

		dev = get_cpu_device(cpu);

		if (!dev) {
@@ -284,24 +284,20 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device, 
		}



		num_opps = dev_pm_opp_get_opp_count(dev);

		if (num_opps > 0) {

		if (num_opps > 0)

			break;

		} else if (num_opps < 0) {

			ret = num_opps;

			goto unlock;

		}

		else if (num_opps < 0)

			return num_opps;

	}



	if (num_opps == 0) {

		ret = -EINVAL;

		goto unlock;

	}

	if (num_opps == 0)

		return -EINVAL;



	power_table = kcalloc(num_opps, sizeof(*power_table), GFP_KERNEL);

	if (!power_table) {

		ret = -ENOMEM;

		goto unlock;

	}

	if (!power_table)

		return -ENOMEM;



	rcu_read_lock();



	for (freq = 0, i = 0;

	     opp = dev_pm_opp_find_freq_ceil(dev, &freq), !IS_ERR(opp);
@@ -309,6 +305,12 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device, 
		u32 freq_mhz, voltage_mv;

		u64 power;



		if (i >= num_opps) {

			rcu_read_unlock();

			ret = -EAGAIN;

			goto free_power_table;

		}



		freq_mhz = freq / 1000000;

		voltage_mv = dev_pm_opp_get_voltage(opp) / 1000;
@@ -326,17 +328,22 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device, 
		power_table[i].power = power;

	}



	if (i == 0) {

	rcu_read_unlock();



	if (i != num_opps) {

		ret = PTR_ERR(opp);

		goto unlock;

		goto free_power_table;

	}



	cpufreq_device->cpu_dev = dev;

	cpufreq_device->dyn_power_table = power_table;

	cpufreq_device->dyn_power_table_entries = i;



unlock:

	rcu_read_unlock();

	return 0;



free_power_table:

	kfree(power_table);



	return ret;

}
@@ -847,7 +854,7 @@ __cpufreq_cooling_register(struct device_node *np, 
	ret = get_idr(&cpufreq_idr, &cpufreq_dev->id);

	if (ret) {

		cool_dev = ERR_PTR(ret);

		goto free_table;

		goto free_power_table;

	}



	snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d",
@@ -889,6 +896,8 @@ __cpufreq_cooling_register(struct device_node *np, 


remove_idr:

	release_idr(&cpufreq_idr, cpufreq_dev->id);

free_power_table:

	kfree(cpufreq_dev->dyn_power_table);

free_table:

	kfree(cpufreq_dev->freq_table);

free_time_in_idle_timestamp:
@@ -1039,6 +1048,7 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) 


	thermal_cooling_device_unregister(cpufreq_dev->cool_dev);

	release_idr(&cpufreq_idr, cpufreq_dev->id);

	kfree(cpufreq_dev->dyn_power_table);

	kfree(cpufreq_dev->time_in_idle_timestamp);

	kfree(cpufreq_dev->time_in_idle);

	kfree(cpufreq_dev->freq_table);

drivers/thermal/db8500_cpufreq_cooling.c

+1 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ static const struct of_device_id db8500_cpufreq_cooling_match[] = { 
	{ .compatible = "stericsson,db8500-cpufreq-cooling" },

	{},

};

MODULE_DEVICE_TABLE(of, db8500_cpufreq_cooling_match);

#endif



static struct platform_driver db8500_cpufreq_cooling_driver = {

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