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linux/drivers/thermal
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Zhang Rui 2eb87d75f9 thermal/drivers/intel: Introduce tcc cooling driver 
On Intel processors, the core frequency can be reduced below OS request,
when the current temperature reaches the TCC (Thermal Control Circuit)
activation temperature.

The default TCC activation temperature is specified by
MSR_IA32_TEMPERATURE_TARGET. However, it can be adjusted by specifying an
offset in degrees C, using the TCC Offset bits in the same MSR register.

This patch introduces a cooling devices driver that utilizes the TCC
Offset feature. The bigger the current cooling state is, the lower the
effective TCC activation temperature is, so that the processors can be
throttled earlier before system critical overheats.

Note that, on different platforms, the behavior might be different on
how fast the setting takes effect, and how much the CPU frequency is
reduced.

This patch has been tested on a KabyLake mobile platform from me, and also
on a CometLake platform from Doug.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210412125901.12549-1-rui.zhang@intel.com
2021-04-20 09:18:57 +02:00
..
broadcom thermal/drivers/bcm2835: Remove redundant dev_err call in bcm2835_thermal_probe() 2021-04-20 08:58:47 +02:00
intel thermal/drivers/intel: Introduce tcc cooling driver 2021-04-20 09:18:57 +02:00
qcom thermal/drivers/qcom/tsens-v0_1: Add support for MDM9607 2021-04-20 08:58:42 +02:00
samsung thermal: exynos: Silence warning during deferred probe 2020-03-12 11:56:53 +01:00
st thermal: stm32: simplify the return expression of stm_thermal_prepare() 2020-10-12 12:08:35 +02:00
tegra thermal: Fix a typo in the file soctherm.c 2021-03-10 12:54:58 +01:00
ti-soc-thermal thermal:ti-soc-thermal: Remove duplicate include in ti-bandgap 2021-03-10 13:04:16 +01:00
amlogic_thermal.c thermal: amlogic: Omit superfluous error message in amlogic_thermal_probe() 2021-03-10 12:52:55 +01:00
armada_thermal.c thermal: Explicitly enable non-changing thermal zone devices 2020-06-29 20:26:37 +02:00
cpufreq_cooling.c thermal/drivers/cpufreq_cooling: Fix slab OOB issue 2021-04-15 13:21:42 +02:00
cpuidle_cooling.c thermal/drivers/cpuidle_cooling: Fix use after error 2021-04-15 13:21:26 +02:00
da9062-thermal.c thermal/core: Remove ms based delay fields 2021-01-19 22:23:49 +01:00
db8500_thermal.c thermal: db8500: Depromote debug print 2020-01-27 10:24:32 +01:00
devfreq_cooling.c thermal/drivers/devfreq_cooling: Fix wrong return on error path 2021-04-15 13:21:16 +02:00
dove_thermal.c thermal: Explicitly enable non-changing thermal zone devices 2020-06-29 20:26:37 +02:00
gov_bang_bang.c thermal: step_wise: Appease the kernel-doc deity 2020-01-27 10:24:32 +01:00
gov_fair_share.c thermal/governors: Prefix all source files with gov_ 2020-05-22 18:48:54 +02:00
gov_power_allocator.c thermal/core/power_allocator: Using round the division when re-divvying up power 2021-03-16 12:44:20 +01:00
gov_step_wise.c thermal/core: Remove the 'forced_passive' option 2021-01-19 22:22:45 +01:00
gov_user_space.c thermal/governors: Prefix all source files with gov_ 2020-05-22 18:48:54 +02:00
hisi_thermal.c thermal/drivers/hisi: Use the correct HiSilicon copyright 2021-04-15 13:21:42 +02:00
imx8mm_thermal.c thermal: imx8mm: Disable the clock on probe failure 2020-12-04 20:46:03 +01:00
imx_sc_thermal.c - Add the hwmon support on the i.MX SC (Anson Huang) 2020-06-12 14:10:21 -07:00
imx_thermal.c thermal: imx: Use dev_err_probe() to simplify error handling 2020-10-12 12:08:34 +02:00
k3_bandgap.c thermal: k3: Add support for bandgap sensors 2020-04-14 11:41:12 +02:00
Kconfig thermal/drivers/zx: Remove zx driver 2021-02-03 09:17:47 +01:00
khadas_mcu_fan.c thermal/core: Make cooling device state change private 2021-01-19 22:31:10 +01:00
kirkwood_thermal.c thermal: Explicitly enable non-changing thermal zone devices 2020-06-29 20:26:37 +02:00
Makefile thermal/drivers/zx: Remove zx driver 2021-02-03 09:17:47 +01:00
max77620_thermal.c thermal: max77620: Appease the kernel-doc deity 2020-01-27 10:24:32 +01:00
mtk_thermal.c thermal: mtk_thermal: make device_reset optional 2020-10-27 11:19:18 +01:00
qoriq_thermal.c thermal: qoriq: Update the settings for TMUv2 2020-05-29 20:26:51 +02:00
rcar_gen3_thermal.c thermal: rcar_gen3_thermal: Add support for up to five TSC nodes 2021-03-10 12:58:28 +01:00
rcar_thermal.c thermal/drivers/rcar: Remove notification usage 2020-12-15 17:01:55 +01:00
rockchip_thermal.c thermal: Use mode helpers in drivers 2020-06-29 20:26:36 +02:00
spear_thermal.c thermal: Explicitly enable non-changing thermal zone devices 2020-06-29 20:26:37 +02:00
sprd_thermal.c - Add support to enable/disable the thermal zones resulting on core code and 2020-08-06 18:10:55 -07:00
sun8i_thermal.c thermal: Fix couple of spellos in the file sun8i_thermal.c 2021-03-10 12:54:58 +01:00
thermal-generic-adc.c thermal: generic-adc: silence info message for IIO_TEMP channels 2020-01-27 10:24:32 +01:00
thermal_core.c thermal/core: Fix memory leak in the error path 2021-04-15 13:21:00 +02:00
thermal_core.h thermal/core: Make cooling device state change private 2021-01-19 22:31:10 +01:00
thermal_helpers.c thermal/core: Precompute the delays from msecs to jiffies 2021-01-19 22:23:38 +01:00
thermal_hwmon.c thermal/drivers/hwmon: Cleanup coding style a bit 2020-11-12 11:24:01 +01:00
thermal_hwmon.h thermal_hwmon: Add devres wrapper for thermal_add_hwmon_sysfs() 2020-01-27 10:24:32 +01:00
thermal_mmio.c thermal/drivers/thermal_mmio: Remove redundant dev_err call in thermal_mmio_probe() 2021-04-20 08:58:47 +02:00
thermal_netlink.c - Fix Kconfig typo "acces" -> "access" (Colin Ian King) 2020-10-17 10:40:22 -07:00
thermal_netlink.h thermal: netlink: Improve the initcall ordering 2020-07-21 10:40:08 +02:00
thermal_of.c thermal: thermal_of: Fix error return code of thermal_of_populate_bind_params() 2021-03-10 13:41:33 +01:00
thermal_sysfs.c thermal/core: Remove pointless test with the THERMAL_TRIPS_NONE macro 2021-01-19 22:23:11 +01:00
uniphier_thermal.c thermal: uniphier: Convert to SPDX identifier 2019-01-02 04:47:16 -08:00