kernel/linux.git/drivers/thermal/Kconfig, branch v6.12.80

thermal/drivers/sti: Depend on THERMAL_OF subsystem

2024-09-02T10:43:27+00:00

Switch to thermal_of_zone to handle thermal-zones. Replace thermal_zone_device_register() by devm_thermal_of_zone_register() and remove ops st_thermal_get_trip_type, st_thermal_get_trip_temp. Signed-off-by: Raphael Gallais-Pou Link: https://lore.kernel.org/r/20240716-thermal-v4-2-947b327e165c@gmail.com Signed-off-by: Daniel Lezcano

thermal: Introduce a debugfs-based testing facility

2024-08-22T15:42:57+00:00

Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki

thermal/drivers/renesas: Group all renesas thermal drivers together

2024-07-15T11:31:38+00:00

Move all Renesas thermal drivers to a vendor specific directory. All drivers are moved verbatim apart from the updated include path for thermal_hwmon.h. Signed-off-by: Niklas Söderlund Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20240506154011.344324-2-niklas.soderlund+renesas@ragnatech.se

thermal: Get rid of CONFIG_THERMAL_WRITABLE_TRIPS

2024-02-23T17:24:48+00:00

The only difference made by CONFIG_THERMAL_WRITABLE_TRIPS is whether or not the writable trips mask passed during thermal zone registration will take any effect, but whoever passes a non-zero writable trips mask to thermal_zone_device_register_with_trips() can be forgiven thinking that it will always work. Moreover, some thermal drivers expect user space to set trip temperature values, so they select CONFIG_THERMAL_WRITABLE_TRIPS, possibly overriding a manual choice to unset it and going against the design purportedly allowing system integrators to decide on the writability of trip points for the given kernel build. It is also set in one platform's defconfig. Forthermore, CONFIG_THERMAL_WRITABLE_TRIPS only affects trip temperature, because trip hysteresis is writable as long as the thermal zone provides a callback to update it, regardless of the CONFIG_THERMAL_WRITABLE_TRIPS value. The above means that the symbol in question is used inconsistently and its purpose is at least moot, so remove it and always take the writable trip mask passed to thermal_zone_device_register_with_trips() into account. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano

Merge tag 'thermal-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2024-01-17T22:47:33+00:00

Pull more thermal control updates from Rafael Wysocki: "These add support for debugfs-based diagnostics to the thermal core, simplify the thermal netlink API, fix system-wide PM support in the Intel HFI driver and clean up some code. Specifics: - Add debugfs-based diagnostics support to the thermal core (Daniel Lezcano, Dan Carpenter) - Fix a power allocator thermal governor issue preventing it from resetting cooling devices sometimes (Di Shen) - Simplify the thermal netlink API and clean up related code (Rafael J. Wysocki) - Make the Intel HFI driver support hibernation and deep suspend properly (Ricardo Neri)" * tag 'thermal-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: thermal/debugfs: Unlock on error path in thermal_debug_tz_trip_up() thermal: intel: hfi: Add syscore callbacks for system-wide PM thermal: gov_power_allocator: avoid inability to reset a cdev thermal: helpers: Rearrange thermal_cdev_set_cur_state() thermal: netlink: Rework notify API for cooling devices thermal: core: Use kstrdup_const() during cooling device registration thermal/debugfs: Add thermal debugfs information for mitigation episodes thermal/debugfs: Add thermal cooling device debugfs information thermal: netlink: Pass thermal zone pointer to notify routines thermal: netlink: Drop thermal_notify_tz_trip_add/delete() thermal: netlink: Pass pointers to thermal_notify_tz_trip_up/down() thermal: netlink: Pass pointers to thermal_notify_tz_trip_change()

thermal/debugfs: Add thermal cooling device debugfs information

2024-01-12T14:34:56+00:00

The thermal framework does not have any debug information except a sysfs stat which is a bit controversial. This one allocates big chunks of memory for every cooling devices with a high number of states and could represent on some systems in production several megabytes of memory for just a portion of it. As the sysfs is limited to a page size, the output is not exploitable with large data array and gets truncated. The patch provides the same information than sysfs except the transitions are dynamically allocated, thus they won't show more events than the ones which actually occurred. There is no longer a size limitation and it opens the field for more debugging information where the debugfs is designed for, not sysfs. The thermal debugfs directory structure tries to stay consistent with the sysfs one but in a very simplified way: thermal/ -- cooling_devices |-- 0 | |-- clear | |-- time_in_state_ms | |-- total_trans | `-- trans_table |-- 1 | |-- clear | |-- time_in_state_ms | |-- total_trans | `-- trans_table |-- 2 | |-- clear | |-- time_in_state_ms | |-- total_trans | `-- trans_table |-- 3 | |-- clear | |-- time_in_state_ms | |-- total_trans | `-- trans_table `-- 4 |-- clear |-- time_in_state_ms |-- total_trans `-- trans_table The content of the files in the cooling devices directory is the same as the sysfs one except for the trans_table which has the following format: Transition Hits 1->0 246 0->1 246 2->1 632 1->2 632 3->2 98 2->3 98 Signed-off-by: Daniel Lezcano [ rjw: White space fixups, rebase ] Signed-off-by: Rafael J. Wysocki

thermal: ACPI: Move the ACPI thermal library to drivers/acpi/

2023-11-21T14:04:08+00:00

The ACPI thermal library contains functions that can be used to retrieve trip point temperature values through the platform firmware for various types of trip points. Each of these functions basically evaluates a specific ACPI object, checks if the value produced by it is reasonable and returns it (or THERMAL_TEMP_INVALID if anything fails). It made sense to hold it in drivers/thermal/ so long as it was only used by the code in that directory, but since it is also going to be used by the ACPI thermal driver located in drivers/acpi/, move it to the latter in order to keep the code related to evaluating ACPI objects defined in the specification proper together. No intentional functional impact. Signed-off-by: Rafael J. Wysocki

thermal/drivers/loongson-2: Add thermal management support

2023-08-17T07:27:18+00:00

This patch adds the support for Loongson-2 thermal sensor controller, which can support maximum four sensor selectors that corresponding to four sets of thermal control registers and one set of sampling register. The sensor selector can selector a speific thermal sensor as temperature input. The sampling register is used to obtain the temperature in real time, the control register GATE field is used to set the threshold of high or low temperature, when the input temperature is higher than the high temperature threshold or lower than the low temperature threshold, an interrupt will occur. Signed-off-by: zhanghongchen Signed-off-by: Yinbo Zhu Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20230817021007.10350-1-zhuyinbo@loongson.cn

thermal: Allow selecting the bang-bang governor as default

2023-06-26T10:03:13+00:00

For many setups the bang-bang governor is exactly what we want. Many ARM SoC-based devices use fans to cool down the entire SoC and that works well only with the bang-bang governor because it uses the hysteresis in order to let the fan run for a while to cool the SoC down below the trip point before switching it off again. The step-wise governor will behave strangely in these situations. It doesn't use the hysteresis, so it can lead to situations where the fan is turned on for only a very brief period and then is switched back off, only to get switched back on again very quickly because the SoC hasn't cooled down very much. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20230609124408.3788680-1-thierry.reding@gmail.com Signed-off-by: Daniel Lezcano

thermal/drivers/mediatek: Relocate driver to mediatek folder

2023-02-15T16:28:25+00:00

Add MediaTek proprietary folder to upstream more thermal zone and cooler drivers, relocate the original thermal controller driver to it, and rename it as "auxadc_thermal.c" to show its purpose more clearly. Signed-off-by: Balsam CHIHI Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20230209105628.50294-2-bchihi@baylibre.com Signed-off-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki