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* thermal/core: Add thermal_trip in thermal_zoneDaniel Lezcano2022-07-281-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | The thermal trip points are properties of a thermal zone and the different sub systems should be able to save them in the thermal zone structure instead of having their own definition. Give the opportunity to the drivers to create a thermal zone with thermal trips which will be accessible directly from the thermal core framework. As we added the thermal trip points structure in the thermal zone, let's extend the thermal zone register function to have the thermal trip structures as a parameter and store it in the 'trips' field of the thermal zone structure. The thermal zone contains the trip point, we can store them directly when registering the thermal zone. That will allow another step forward to remove the duplicate thermal zone structure we find in the thermal_of code. Cc: Alexandre Bailon <abailon@baylibre.com> Cc: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linexp.org> Link: https://lore.kernel.org/r/20220722200007.1839356-9-daniel.lezcano@linexp.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* thermal/core: Rename 'trips' to 'num_trips'Daniel Lezcano2022-07-281-2/+2
| | | | | | | | | | | | In order to use thermal trips defined in the thermal structure, rename the 'trips' field to 'num_trips' to have the 'trips' field containing the thermal trip points. Cc: Alexandre Bailon <abailon@baylibre.com> Cc: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linexp.org> Link: https://lore.kernel.org/r/20220722200007.1839356-8-daniel.lezcano@linexp.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* thermal/of: Move thermal_trip structure to thermal.hDaniel Lezcano2022-07-281-0/+12
| | | | | | | | | | | | | | The structure thermal_trip is now generic and will be usable by the different sensor drivers in place of their own structure. Move its definition to thermal.h to make it accessible. Cc: Alexandre Bailon <abailon@baylibre.com> Cc: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linexp.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20220722200007.1839356-5-daniel.lezcano@linexp.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* thermal/core: Remove DROP_FULL and RAISE_FULLDaniel Lezcano2022-07-281-2/+0
| | | | | | | | | | The trends DROP_FULL and RAISE_FULL are not used and were never used in the past AFAICT. Remove these conditions as they seems to not be handled anywhere. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20220629151012.3115773-2-daniel.lezcano@linaro.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* thermal/drivers/thermal_of: Add change_mode ops support for thermal_of sensorManaf Meethalavalappu Pallikunhi2022-05-191-0/+3
| | | | | | | | | | | | | The sensor driver which register through thermal_of interface doesn't have an option to get thermal zone mode change notification from thermal core. Add support for change_mode ops in thermal_of interface so that sensor driver can use this ops for mode change notification. Signed-off-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com> Link: https://lore.kernel.org/r/1646767586-31908-1-git-send-email-quic_manafm@quicinc.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* thermal: Spelling s/scallbacks/callbacks/Geert Uytterhoeven2021-08-141-1/+1
| | | | | | | | Fix a misspelling of the word "callbacks". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/ae38372996a23bb67769e2d62ca170ae9457c4df.1626261946.git.geert+renesas@glider.be
* thermal/core: Fix thermal_cooling_device_register() prototypeArnd Bergmann2021-08-141-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | There are two pairs of declarations for thermal_cooling_device_register() and thermal_of_cooling_device_register(), and only one set was changed in a recent patch, so the other one now causes a compile-time warning: drivers/net/wireless/mediatek/mt76/mt7915/init.c: In function 'mt7915_thermal_init': drivers/net/wireless/mediatek/mt76/mt7915/init.c:134:48: error: passing argument 1 of 'thermal_cooling_device_register' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers] 134 | cdev = thermal_cooling_device_register(wiphy_name(wiphy), phy, | ^~~~~~~~~~~~~~~~~ In file included from drivers/net/wireless/mediatek/mt76/mt7915/init.c:7: include/linux/thermal.h:407:39: note: expected 'char *' but argument is of type 'const char *' 407 | thermal_cooling_device_register(char *type, void *devdata, | ~~~~~~^~~~ Change the dummy helper functions to have the same arguments as the normal version. Fixes: f991de53a8ab ("thermal: make device_register's type argument const") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210722090717.1116748-1-arnd@kernel.org
* thermal/core: Remove thermal_notify_frameworkThara Gopinath2021-04-221-5/+0
| | | | | | | | | | | | | thermal_notify_framework just updates for a single trip point where as thermal_zone_device_update does other bookkeeping like updating the temperature of the thermal zone and setting the next trip point. The only driver that was using thermal_notify_framework was updated in the previous patch to use thermal_zone_device_update instead. Since there are no users for thermal_notify_framework remove it. Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210122023406.3500424-3-thara.gopinath@linaro.org
* thermal/drivers/core: Use a char pointer for the cooling device nameDaniel Lezcano2021-03-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | We want to have any kind of name for the cooling devices as we do no longer want to rely on auto-numbering. Let's replace the cooling device's fixed array by a char pointer to be allocated dynamically when registering the cooling device, so we don't limit the length of the name. Rework the error path at the same time as we have to rollback the allocations in case of error. Tested with a dummy device having the name: "Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch" A village on the island of Anglesey (Wales), known to have the longest name in Europe. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Tested-by: Ido Schimmel <idosch@nvidia.com> Link: https://lore.kernel.org/r/20210314111333.16551-1-daniel.lezcano@linaro.org
* thermal/core: Make cooling device state change privateDaniel Lezcano2021-01-191-3/+0
| | | | | | | | | | | | | The change of the cooling device state should be used by the governor or at least by the core code, not by the drivers themselves. Remove the API usage and move the function declaration to the internal headers. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20210118173824.9970-1-daniel.lezcano@linaro.org
* thermal/core: Remove ms based delay fieldsDaniel Lezcano2021-01-191-7/+0
| | | | | | | | | | | | | | The code does no longer use the ms unit based fields to set the delays as they are replaced by the jiffies. Remove them and replace their user to use the jiffies version instead. Cc: Thara Gopinath <thara.gopinath@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Peter Kästle <peter@piie.net> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20201216220337.839878-3-daniel.lezcano@linaro.org
* thermal/core: Precompute the delays from msecs to jiffiesDaniel Lezcano2021-01-191-0/+7
| | | | | | | | | | | | | | The delays are stored in ms units and when the polling function is called this delay is converted into jiffies at each call. Instead of doing the conversion again and again, compute the jiffies at init time and use the value directly when setting the polling. Cc: Thara Gopinath <thara.gopinath@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org> Link: https://lore.kernel.org/r/20201216220337.839878-1-daniel.lezcano@linaro.org
* thermal/core: Remove unused macro THERMAL_TRIPS_NONEDaniel Lezcano2021-01-191-1/+0
| | | | | | | | The macro THERMAL_TRIPS_NONE is no longer used, remove it. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org> Link: https://lore.kernel.org/r/20201214233811.485669-6-daniel.lezcano@linaro.org
* thermal/core: Remove the 'forced_passive' optionDaniel Lezcano2021-01-191-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code was reorganized in 2012 with the commit 0c01ebbfd3caf1. The main change is a loop on the trip points array and a unconditional call to the throttle() ops of the governors for each of them even if the trip temperature is not reached yet. With this change, the 'forced_passive' is no longer checked in the thermal_zone_device_update() function but in the step wise governor's throttle() callback. As the force_passive does no belong to the trip point array, the thermal_zone_device_update() can not compare with the specified passive temperature, thus does not detect the passive limit has been crossed. Consequently, throttle() is never called and the 'forced_passive' branch is unreached. In addition, the default processor cooling device is not automatically bound to the thermal zone if there is not passive trip point, thus the 'forced_passive' can not operate. If there is an active trip point, then the throttle function will be called to mitigate at this temperature and the 'forced_passive' will override the mitigation of the active trip point in this case but with the default cooling device bound to the thermal zone, so usually a fan, and that is not a passive cooling effect. Given the regression exists since more than 8 years, nobody complained and at the best of my knowledge there is no bug open in https://bugzilla.kernel.org, it is reasonable to say it is unused. Remove the 'forced_passive' related code. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org> Link: https://lore.kernel.org/r/20201214233811.485669-1-daniel.lezcano@linaro.org
* thermal/core: Remove notify opsDaniel Lezcano2021-01-071-2/+0
| | | | | | | | | With the removal of the notifys user in a previous patches, the ops is no longer needed, remove it. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20201210121514.25760-5-daniel.lezcano@linaro.org
* thermal/core: Add critical and hot opsDaniel Lezcano2020-12-111-0/+3
| | | | | | | | | | | | | | | | | | Currently there is no way to the sensors to directly call an ops in interrupt mode without calling thermal_zone_device_update assuming all the trip points are defined. A sensor may want to do something special if a trip point is hot or critical. This patch adds the critical and hot ops to the thermal zone device, so a sensor can directly invoke them or let the thermal framework to call the sensor specific ones. Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20201210121514.25760-2-daniel.lezcano@linaro.org
* thermal: cooling: Remove unused variable *tzzhuguangqing2020-10-121-6/+3
| | | | | | | | | | | | | | | | 1. devfreq_cooling.c: The variable *tz is not used in devfreq_cooling_get_requested_power(), devfreq_cooling_state2power() and devfreq_cooling_power2state(). 2. cpufreq_cooling.c: After 84fe2cab48590, the variable *tz is not used anymore in cpufreq_get_requested_power(), cpufreq_state2power() and cpufreq_power2state(). Remove the variable *tz. Signed-off-by: zhuguangqing <zhuguangqing@xiaomi.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200914071101.13575-1-zhuguangqing83@gmail.com
* thermal: core: Add new event for sending keep alive notificationsSrinivas Pandruvada2020-10-121-0/+1
| | | | | | | | | | This event is sent by the platform firmware to confirm that user space thermal solution is alive. The response to this event from the user space thermal solution is platform specific. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200915223650.406046-3-srinivas.pandruvada@linux.intel.com
* thermal: core: genetlink support for events/cmd/samplingDaniel Lezcano2020-07-071-17/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initially the thermal framework had a very simple notification mechanism to send generic netlink messages to the userspace. The notification function was never called from anywhere and the corresponding dead code was removed. It was probably a first attempt to introduce the netlink notification. At LPC2018, the presentation "Linux thermal: User kernel interface", proposed to create the notifications to the userspace via a kfifo. The advantage of the kfifo is the performance. It is usually used from a 1:1 communication channel where a driver captures data and sends it as fast as possible to a userspace process. The drawback is that only one process uses the notification channel exclusively, thus no other process is allowed to use the channel to get temperature or notifications. This patch defines a generic netlink API to discover the current thermal setup and adds event notifications as well as temperature sampling. As any genetlink protocol, it can evolve and the versioning allows to keep the backward compatibility. In order to prevent the user from getting flooded with data on a single channel, there are two multicast channels, one for the temperature sampling when the thermal zone is updated and another one for the events, so the user can get the events only without the thermal zone temperature sampling. Also, a list of commands to discover the thermal setup is added and can be extended when needed. Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200706105538.2159-3-daniel.lezcano@linaro.org
* thermal: Make thermal_zone_device_is_enabled() available to core onlyAndrzej Pietrasiewicz2020-07-071-5/+0
| | | | | | | | This function is not needed by drivers. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200703104354.19657-4-andrzej.p@collabora.com
* thermal: Rename set_mode() to change_mode()Andrzej Pietrasiewicz2020-06-291-1/+1
| | | | | | | | | | | | | | | | | | set_mode() is only called when tzd's mode is about to change. Actual setting is performed in thermal_core, in thermal_zone_device_set_mode(). The meaning of set_mode() callback is actually to notify the driver about the mode being changed and giving the driver a chance to oppose such change. To better reflect the purpose of the method rename it to change_mode() Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> [for acerhdf] Acked-by: Peter Kaestle <peter@piie.net> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200629122925.21729-12-andrzej.p@collabora.com
* thermal: Add mode helpersAndrzej Pietrasiewicz2020-06-291-0/+13
| | | | | | | | | | | Prepare for making the drivers not access tzd's private members. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [staticize thermal_zone_device_set_mode()] Signed-off-by: kernel test robot <lkp@intel.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200629122925.21729-7-andrzej.p@collabora.com
* thermal: remove get_mode() operation of driversAndrzej Pietrasiewicz2020-06-291-2/+0
| | | | | | | | | | | | | | | | get_mode() is now redundant, as the state is stored in struct thermal_zone_device. Consequently the "mode" attribute in sysfs can always be visible, because it is always possible to get the mode from struct tzd. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> [for acerhdf] Acked-by: Peter Kaestle <peter@piie.net> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200629122925.21729-6-andrzej.p@collabora.com
* thermal: Add current mode to thermal zone deviceAndrzej Pietrasiewicz2020-06-291-0/+2
| | | | | | | | | | | | | | Prepare for changing the place where the mode is stored: now it is in drivers, which might or might not implement get_mode()/set_mode() methods. A lot of cleanup can be done thanks to storing it in struct tzd. The get_mode() methods will become redundant. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200629122925.21729-4-andrzej.p@collabora.com
* thermal: Remove thermal_zone_device_update() stubDaniel Lezcano2020-04-141-3/+0
| | | | | | | | | | All users of the function depends on THERMAL, no stub is needed. Remove it. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-9-daniel.lezcano@linaro.org
* thermal: Remove stubs for thermal_zone_[un]bind_cooling_deviceDaniel Lezcano2020-04-141-10/+0
| | | | | | | | | | All callers of the functions depends on THERMAL, it is pointless to define stubs. Remove them. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-8-daniel.lezcano@linaro.org
* thermal: Change IS_ENABLED to IFDEF in the header fileDaniel Lezcano2020-04-141-1/+1
| | | | | | | | | | The thermal framework can not be compiled as a module. The IS_ENABLED macro is useless here and can be replaced by an ifdef. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-7-daniel.lezcano@linaro.org
* thermal: Move get_thermal_instance to the internal headerDaniel Lezcano2020-04-141-6/+0
| | | | | | | | | | | | | | | | | The function is not used any place other than the thermal directory. It does not make sense to export its definition in the global header as there is no use of it. Move the definition to the internal header and allow better self-encapsulation. Take the opportunity to add the parameter names to make checkpatch happy and remove the pointless stubs. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-6-daniel.lezcano@linaro.org
* thermal: Move get_tz_trend to the internal headerDaniel Lezcano2020-04-141-3/+1
| | | | | | | | | | | | | | | | | The function is not used any place other than the thermal directory. It does not make sense to export its definition in the global header as there is no use of it. Move the definition to the internal header and allow better self-encapsulation. Take the opportunity to add the parameter names to make checkpatch happy and remove the pointless stubs. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-5-daniel.lezcano@linaro.org
* thermal: Move trip point structure definition to private headerDaniel Lezcano2020-04-141-15/+0
| | | | | | | | | | | | The struct thermal_trip is only used by the thermal internals, it is pointless to export the definition in the global header. Move the structure to the thermal_core.h internal header. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-4-daniel.lezcano@linaro.org
* thermal: Move internal IPA functionsDaniel Lezcano2020-04-141-24/+0
| | | | | | | | | | | | | | | | | | | | The exported IPA functions are used by the IPA. It is pointless to declare the functions in the thermal.h file. For better self-encapsulation and less impact for the compilation if a change is made on it. Move the code in the thermal core internal header file. As the users depends on THERMAL then it is pointless to have the stub, remove them. Take also the opportunity to fix checkpatch warnings/errors when moving the code around. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-3-daniel.lezcano@linaro.org
* thermal: Move struct thermal_attr to the private headerDaniel Lezcano2020-04-141-5/+1
| | | | | | | | | | | | | | The structure belongs to the thermal core internals but it is exported in the include/linux/thermal.h For better self-encapsulation and less impact for the compilation if a change is made on it. Move the structure in the thermal core internal header file. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-2-daniel.lezcano@linaro.org
* thermal: Move default governor config option to the internal headerDaniel Lezcano2020-04-141-11/+0
| | | | | | | | | | | | The default governor set at compilation time is a thermal internal business, no need to export to the global thermal header. Move the config options to the internal header. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200402142747.8307-1-daniel.lezcano@linaro.org
* thermal: core: Make thermal_zone_set_trips privateDaniel Lezcano2020-04-141-3/+0
| | | | | | | | | | | | | The function thermal_zone_set_trips() is used by the thermal core code in order to update the next trip points, there are no other users. Move the function definition in the thermal_core.h, remove the EXPORT_SYMBOL_GPL and document the function. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Link: https://lore.kernel.org/r/20200331165449.30355-1-daniel.lezcano@linaro.org
* thermal: Fix build warning of !defined(CONFIG_THERMAL_OF)Anson Huang2020-03-121-1/+1
| | | | | | | | | | | | | | | Add "inline" to thermal_zone_of_get_sensor_id() function to avoid below build warning of !defined(CONFIG_THERMAL_OF). In file included from drivers/hwmon/hwmon.c:22: include/linux/thermal.h:382:12: warning: 'thermal_zone_of_get_sensor_id' defined but not used [-Wunused-function] 382 | static int thermal_zone_of_get_sensor_id(struct device_node *tz_np, Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/1583222684-10229-1-git-send-email-Anson.Huang@nxp.com
* thermal: of-thermal: add API for getting sensor ID from DTAnson Huang2020-03-121-0/+10
| | | | | | | | | | | | This patch adds new API thermal_zone_of_get_sensor_id() to provide the feature of getting sensor ID from DT thermal zone's node. It's useful for thermal driver to register the specific thermal zone devices from DT in a common way. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/1582330132-13461-2-git-send-email-Anson.Huang@nxp.com
* thermal: remove kelvin to/from Celsius conversion helpers from <linux/thermal.h>Akinobu Mita2020-01-311-11/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This removes the kelvin to/from Celsius conversion helper macros in <linux/thermal.h> which were switched to the inline helper functions in <linux/units.h>. Link: http://lkml.kernel.org/r/1576386975-7941-9-git-send-email-akinobu.mita@gmail.com Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Sujith Thomas <sujith.thomas@intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Andy Shevchenko <andy@infradead.org> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Amit Kucheria <amit.kucheria@verdurent.com> Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Keith Busch <kbusch@kernel.org> Cc: Jens Axboe <axboe@fb.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Johannes Berg <johannes.berg@intel.com> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Luca Coelho <luciano.coelho@intel.com> Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* thermal: Remove netlink supportAmit Kucheria2019-11-071-11/+0
| | | | | | | | | | There are no users of netlink messages for thermal inside the kernel. Remove the code and adjust the documentation. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/8ff02cf62186c7a54fff325fad40a2e9ca3affa6.1571656014.git.amit.kucheria@linaro.org
* docs: thermal: add it to the driver APIMauro Carvalho Chehab2019-07-311-2/+2
| | | | | | | The file contents mostly describes driver internals. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: thermal: convert to ReSTMauro Carvalho Chehab2019-06-271-2/+2
| | | | | | | | | | | | | Rename the thermal documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* Merge branch 'next' of ↵Linus Torvalds2019-05-161-3/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management updates from Zhang Rui: - Remove the 'module' Kconfig option for thermal subsystem framework because the thermal framework are required to be ready as early as possible to avoid overheat at boot time (Daniel Lezcano) - Fix a bug that thermal framework pokes disabled thermal zones upon resume (Wei Wang) - A couple of cleanups and trivial fixes on int340x thermal drivers (Srinivas Pandruvada, Zhang Rui, Sumeet Pawnikar) * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: drivers: thermal: processor_thermal: Downgrade error message mlxsw: Remove obsolete dependency on THERMAL=m hwmon/drivers/core: Simplify complex dependency thermal/drivers/core: Fix typo in the option name thermal/drivers/core: Remove depends on THERMAL in Kconfig thermal/drivers/core: Remove module unload code thermal/drivers/core: Remove the module Kconfig's option thermal: core: skip update disabled thermal zones after suspend thermal: make device_register's type argument const thermal: intel: int340x: processor_thermal_device: simplify to get driver data thermal/int3403_thermal: favor _TMP instead of PTYP
| * thermal: make device_register's type argument constJean-Francois Dagenais2019-05-061-3/+3
| | | | | | | | | | | | | | | | ...because it can be, the buffer is strlcpy'd into a local buffer in a thermal struct member. Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* | thermal: Introduce devm_thermal_of_cooling_device_registerGuenter Roeck2019-05-141-0/+13
|/ | | | | | | | | | | | | | | | | | | thermal_of_cooling_device_register() and thermal_cooling_device_register() are typically called from driver probe functions, and thermal_cooling_device_unregister() is called from remove functions. This makes both a perfect candidate for device managed functions. Introduce devm_thermal_of_cooling_device_register(). This function can also be used to replace thermal_cooling_device_register() by passing a NULL pointer as device node. The new function requires both struct device * and struct device_node * as parameters since the struct device_node * parameter is not always identical to dev->of_node. Don't introduce a device managed remove function since it is not needed at this point. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* drivers: thermal: Update license to SPDX formatLina Iyer2018-05-301-16/+1
| | | | | | | | Update licences format for core thermal files. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: Add cooling device's statistics in sysfsViresh Kumar2018-04-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This extends the sysfs interface for thermal cooling devices and exposes some pretty useful statistics. These statistics have proven to be quite useful specially while doing benchmarks related to the task scheduler, where we want to make sure that nothing has disrupted the test, specially the cooling device which may have put constraints on the CPUs. The information exposed here tells us to what extent the CPUs were constrained by the thermal framework. The write-only "reset" file is used to reset the statistics. The read-only "time_in_state_ms" file shows the time (in msec) spent by the device in the respective cooling states, and it prints one line per cooling state. The read-only "total_trans" file shows single positive integer value showing the total number of cooling state transitions the device has gone through since the time the cooling device is registered or the time when statistics were reset last. The read-only "trans_table" file shows a two dimensional matrix, where an entry <i,j> (row i, column j) represents the number of transitions from State_i to State_j. This is how the directory structure looks like for a single cooling device: $ ls -R /sys/class/thermal/cooling_device0/ /sys/class/thermal/cooling_device0/: cur_state max_state power stats subsystem type uevent /sys/class/thermal/cooling_device0/power: autosuspend_delay_ms runtime_active_time runtime_suspended_time control runtime_status /sys/class/thermal/cooling_device0/stats: reset time_in_state_ms total_trans trans_table This is tested on ARM 64-bit Hisilicon hikey620 board running Ubuntu and ARM 64-bit Hisilicon hikey960 board running Android. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal : Remove const to make same prototypeArvind Yadav2017-10-171-1/+1
| | | | | | | | | Here, prototype of thermal_zone_device_register is not matching with static inline thermal_zone_device_register. One is using const thermal_zone_params. Other is using non-const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: int3400_thermal: process "thermal table changed" eventBrian Bian2017-08-111-0/+1
| | | | | | | | | | Some BIOS implement ACPI notification code 0x83 to indicate active relationship table(ART) and/or thermal relationship table(TRT) changes to INT3400 device. This event needs to be propagated to user space so that it can be handled by the user space thermal daemon. Signed-off-by: Brian Bian <brian.bian@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal core: convert ID allocation to IDAMatthew Wilcox2017-01-041-2/+2
| | | | | | | | The thermal core does not use the ability to look up pointers by ID, so convert it from using an IDR to the more space-efficient IDA. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: core: move trips attributes to tz->device.groupsEduardo Valentin2016-11-231-0/+2
| | | | | | | | | | | | | | | | | Finally, move the last thermal zone sysfs attributes to tz->device.groups: trips attributes. This requires adding a attribute_group to thermal_zone_device, creating it dynamically, and then setting all trips attributes in it. The trips attribute is then added to the tz->device.groups. As the removal of all attributes are handled by device core, the device remove calls are not needed anymore. Cc: Zhang Rui <rui.zhang@intel.com> Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: Enhance thermal_zone_device_update for eventsSrinivas Pandruvada2016-09-271-2/+17
| | | | | | | | | | | | | | | | | | Added one additional parameter to thermal_zone_device_update() to provide caller with an optional capability to specify reason. Currently this event is used by user space governor to trigger different processing based on event code. Also it saves an additional call to read temperature when the event is received. The following events are cuurently defined: - Unspecified event - New temperature sample - Trip point violated - Trip point changed - thermal device up and down - thermal device power capability changed Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 23:24:57 +0000