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* thermal/core: Fix thermal_cooling_device_register() prototypeArnd Bergmann2021-09-261-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit fb83610762dd5927212aa62a468dd3b756b57a88 ] 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 Signed-off-by: Sasha Levin <sashal@kernel.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>
* thermal: streamline get_trend callbacksSascha Hauer2016-09-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | The .get_trend callback in struct thermal_zone_device_ops has the prototype: int (*get_trend) (struct thermal_zone_device *, int, enum thermal_trend *); whereas the .get_trend callback in struct thermal_zone_of_device_ops has: int (*get_trend)(void *, long *); Streamline both prototypes and add the trip argument to the OF callback aswell and use enum thermal_trend * instead of an integer pointer. While the OF prototype may be the better one, this should be decided at framework level and not on OF level. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Caesar Wang <wxt@rock-chips.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: linux-pm@vger.kernel.org Reviewed-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: of: implement .set_trips for device tree thermal zonesSascha Hauer2016-09-271-0/+4
| | | | | | | | | | | | | | | | This patch implements .set_trips for device tree thermal zones. As the hardware-tracked trip points is supported by thermal core patch[0]. patch[0] "thermal: Add support for hardware-tracked trip points". Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Caesar Wang <wxt@rock-chips.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Reviewed-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: Add support for hardware-tracked trip pointsSascha Hauer2016-09-271-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for hardware-tracked trip points to the device tree thermal sensor framework. The framework supports an arbitrary number of trip points. Whenever the current temperature is updated, the trip points immediately below and above the current temperature are found. A .set_trips callback is then called with the temperatures. If there is no trip point above or below the current temperature, the passed trip temperature will be -INT_MAX or INT_MAX respectively. In this callback, the driver should program the hardware such that it is notified when either of these trip points are triggered. When a trip point is triggered, the driver should call `thermal_zone_device_update' for the respective thermal zone. This will cause the trip points to be updated again. If .set_trips is not implemented, the framework behaves as before. This patch is based on an earlier version from Mikko Perttunen <mikko.perttunen@kapsi.fi> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Caesar Wang <wxt@rock-chips.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: linux-pm@vger.kernel.org Reviewed-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: core: export apis to get slope and offsetRajendra Nayak2016-09-271-0/+8
| | | | | | | | | Add apis for platform thermal drivers to query for slope and offset attributes, which might be needed for temperature calculations. Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: add the note for set_trip_tempCaesar Wang2016-06-011-0/+2
| | | | | | | | | | | Fixes commit 60f9ce3ada53 ("thermal: of-thermal: allow setting trip_temp on hardware") Signed-off-by: Caesar Wang <wxt@rock-chips.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: linux-pm@vger.kernel.org Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: of-thermal: allow setting trip_temp on hardwareWei Ni2016-05-171-0/+1
| | | | | | | | | | | | | In current of-thermal, the .set_trip_temp only support to set trip_temp for SW. But some sensors support to set trip_temp on hardware, so that can trigger interrupt, shutdown or any other events. This patch adds .set_trip_temp() callback in thermal_zone_of_device_ops{}, so that the sensor device can use it to set trip_temp on hardware. Signed-off-by: Wei Ni <wni@nvidia.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: consistently use int for trip tempWei Ni2016-04-201-2/+2
| | | | | | | | | | | | | | | The commit 17e8351a7739 consistently use int for temperature, however it missed a few in trip temperature and thermal_core. In current codes, the trip->temperature used "unsigned long" and zone->temperature used"int", if the temperature is negative value, it will get wrong result when compare temperature with trip temperature. This patch can fix it. Signed-off-by: Wei Ni <wni@nvidia.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* Thermal: Ignore invalid trip pointsZhang Rui2016-03-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases, platform thermal driver may report invalid trip points, thermal core should not take any action for these trip points. This fixed a regression that bogus trip point starts to screw up thermal control on some Lenovo laptops, after commit bb431ba26c5cd0a17c941ca6c3a195a3a6d5d461 Author: Zhang Rui <rui.zhang@intel.com> Date: Fri Oct 30 16:31:47 2015 +0800 Thermal: initialize thermal zone device correctly After thermal zone device registered, as we have not read any temperature before, thus tz->temperature should not be 0, which actually means 0C, and thermal trend is not available. In this case, we need specially handling for the first thermal_zone_device_update(). Both thermal core framework and step_wise governor is enhanced to handle this. And since the step_wise governor is the only one that uses trends, so it's the only thermal governor that needs to be updated. Tested-by: Manuel Krause <manuelkrause@netscape.net> Tested-by: szegad <szegadlo@poczta.onet.pl> Tested-by: prash <prash.n.rao@gmail.com> Tested-by: amish <ammdispose-arch@yahoo.com> Tested-by: Matthias <morpheusxyz123@yahoo.de> Reviewed-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> CC: <stable@vger.kernel.org> #3.18+ Link: https://bugzilla.redhat.com/show_bug.cgi?id=1317190 Link: https://bugzilla.kernel.org/show_bug.cgi?id=114551 Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: of-thermal: Add devm version of thermal_zone_of_sensor_registerLaxman Dewangan2016-03-091-0/+18
| | | | | | | | | | | Add resource managed version of thermal_zone_of_sensor_register() and thermal_zone_of_sensor_unregister(). This helps in reducing the code size in error path, remove of driver remove callbacks and making proper sequence for deallocations. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* Thermal: do thermal zone update after a cooling device registeredChen Yu2015-12-291-0/+2
| | | | | | | | | | | | | | | | | | | | | | | When a new cooling device is registered, we need to update the thermal zone to set the new registered cooling device to a proper state. This fixes a problem that the system is cool, while the fan devices are left running on full speed after boot, if fan device is registered after thermal zone device. Here is the history of why current patch looks like this: https://patchwork.kernel.org/patch/7273041/ CC: <stable@vger.kernel.org> #3.18+ Reference:https://bugzilla.kernel.org/show_bug.cgi?id=92431 Tested-by: Manuel Krause <manuelkrause@netscape.net> Tested-by: szegad <szegadlo@poczta.onet.pl> Tested-by: prash <prash.n.rao@gmail.com> Tested-by: amish <ammdispose-arch@yahoo.com> Reviewed-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com>
* Thermal: initialize thermal zone device correctlyZhang Rui2015-12-291-0/+3
| | | | | | | | | | | | | | | | | | | | | | | After thermal zone device registered, as we have not read any temperature before, thus tz->temperature should not be 0, which actually means 0C, and thermal trend is not available. In this case, we need specially handling for the first thermal_zone_device_update(). Both thermal core framework and step_wise governor is enhanced to handle this. And since the step_wise governor is the only one that uses trends, so it's the only thermal governor that needs to be updated. CC: <stable@vger.kernel.org> #3.18+ Tested-by: Manuel Krause <manuelkrause@netscape.net> Tested-by: szegad <szegadlo@poczta.onet.pl> Tested-by: prash <prash.n.rao@gmail.com> Tested-by: amish <ammdispose-arch@yahoo.com> Tested-by: Matthias <morpheusxyz123@yahoo.de> Reviewed-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com>
* thermal: fix thermal_zone_bind_cooling_device prototypeArnd Bergmann2015-11-231-1/+2
| | | | | | | | | | | | | | | | | | When the prototype for thermal_zone_bind_cooling_device changed, the static inline wrapper function was left alone, which in theory can cause build warnings: I have seen this error in the past: drivers/thermal/db8500_thermal.c: In function 'db8500_cdev_bind': drivers/thermal/db8500_thermal.c:78:9: error: too many arguments to function 'thermal_zone_bind_cooling_device' ret = thermal_zone_bind_cooling_device(thermal, i, cdev, while this one no longer shows up, there is no doubt that the prototype is still wrong, so let's just fix it anyway. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 6cd9e9f629f1 ("thermal: of: fix cooling device weights in device tree") Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUSRasmus Villemoes2015-10-101-3/+5
| | | | | | | | | | | The macros KELVIN_TO_CELSIUS and CELSIUS_TO_KELVIN actually convert between deciKelvins and Celsius, so rename them to reflect that. While at it, use a statement expression in DECI_KELVIN_TO_CELSIUS to prevent expanding the argument multiple times and get rid of a few casts. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: Add a function to get the minimum powerJavi Merino2015-09-141-0/+6
| | | | | | | | | | | | The thermal core already has a function to get the maximum power of a cooling device: power_actor_get_max_power(). Add a function to get the minimum power of a cooling device. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: Fix thermal_zone_of_sensor_register to match documentationPunit Agrawal2015-09-131-1/+1
| | | | | | | | | | | | | | | thermal_zone_of_sensor_register is documented as returning a pointer to either a valid thermal_zone_device on success, or a corresponding ERR_PTR() value. In contrast, the function returns NULL when THERMAL_OF is configured off. Fix this. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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