lwn.git/drivers/hwmon/pwm-fan.c, branch v5.7-rc3

hwmon: (pwm-fan) stop fan on shutdown

2020-01-23T21:15:11+00:00

The pwm-fan driver stops the fan in suspend but leaves the fan on in shutdown. It seems strange to leave the fan on in shutdown because there is no use case in my mind and the gpio-fan driver on the other hand stops in shutdown. This change turns off the fan in shutdown. If anyone complains then we'll add an optional property to switch the behavior. Cc: Rob Herring Cc: Mark Rutland Cc: Kamil Debski Cc: Bartlomiej Zolnierkiewicz Cc: Guenter Roeck Cc: Thierry Reding Cc: Uwe Kleine-König Signed-off-by: Akinobu Mita Link: https://lore.kernel.org/r/1579534344-11694-1-git-send-email-akinobu.mita@gmail.com Signed-off-by: Guenter Roeck

hwmon: pwm-fan: Use platform_get_irq_optional()

2019-08-28T20:52:30+00:00

The PWM fan interrupt is optional, so we don't want an error message in the kernel log if it wasn't specified. Signed-off-by: Thierry Reding Reviewed-by: Stephen Boyd Acked-by: Guenter Roeck Acked-by: Bartlomiej Zolnierkiewicz Link: https://lore.kernel.org/r/20190828083411.2496-2-thierry.reding@gmail.com Signed-off-by: Greg Kroah-Hartman

hwmon: (pwm-fan) Check return value from devm_add_action_or_reset

2019-06-24T01:32:34+00:00

devm_add_action_or_reset() can fail due to a memory allocation failure. Check for it and return the error if that happens. Fixes: 37bcec5d9f71 ("hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register") Signed-off-by: Guenter Roeck

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30T18:26:37+00:00

Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal

2019-05-16T14:56:57+00:00

Pull thermal soc updates from Eduardo Valentin: - thermal core has a new devm_* API for registering cooling devices. I took the entire series, that is why you see changes on drivers/hwmon in this pull (Guenter Roeck) - rockchip thermal driver gains support to PX30 SoC (Elaine Zhang) - the generic-adc thermal driver now considers the lookup table DT property as optional (Jean-Francois Dagenais) - Refactoring of tsens thermal driver (Amit Kucheria) - Cleanups on cpu cooling driver (Daniel Lezcano) - broadcom thermal driver dropped support to ACPI (Srinath Mannam) - tegra thermal driver gains support to OC hw throttle and GPU throtle (Wei Ni) - Fixes in several thermal drivers. * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (59 commits) hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register hwmon: (npcm750-pwm-fan) Use devm_thermal_of_cooling_device_register hwmon: (mlxreg-fan) Use devm_thermal_of_cooling_device_register hwmon: (gpio-fan) Use devm_thermal_of_cooling_device_register hwmon: (aspeed-pwm-tacho) Use devm_thermal_of_cooling_device_register thermal: rcar_gen3_thermal: Fix to show correct trip points number thermal: rcar_thermal: update calculation formula for R-Car Gen3 SoCs thermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power thermal: rockchip: Support the PX30 SoC in thermal driver dt-bindings: rockchip-thermal: Support the PX30 SoC compatible thermal: rockchip: fix up the tsadc pinctrl setting error thermal: broadcom: Remove ACPI support thermal: Fix build error of missing devm_ioremap_resource on UM thermal/drivers/cpu_cooling: Remove pointless field thermal/drivers/cpu_cooling: Add Software Package Data Exchange (SPDX) thermal/drivers/cpu_cooling: Fixup the header and copyright thermal/drivers/cpu_cooling: Remove pointless test in power2state() thermal: rcar_gen3_thermal: disable interrupt in .remove thermal: rcar_gen3_thermal: fix interrupt type thermal: Introduce devm_thermal_of_cooling_device_register ...

hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register

2019-05-14T14:00:47+00:00

Use devm_thermal_of_cooling_device_register() to register the cooling device. Also use devm_add_action_or_reset() to stop the fan on device removal, and to disable the pwm. Introduce a local 'dev' variable in the probe function to make the code easier to read. As a side effect, this fixes a bug seen if pwm_fan_of_get_cooling_data() returned an error. In that situation, the pwm was not disabled, and the fan was not stopped. Using devm functions also ensures that the pwm is disabled and that the fan is stopped only after the hwmon device has been unregistered. Cc: Lukasz Majewski Signed-off-by: Guenter Roeck Signed-off-by: Eduardo Valentin

hwmon: (pwm-fan) Report probe errors consistently

2019-04-16T00:19:53+00:00

Printing the error code for a failure provides a head-start for debugging, since it's often sufficient to pinpoint the origin of the failure. We already do this for some probe-failure messages, so let's make the rest of them consistent. Signed-off-by: Robin Murphy Signed-off-by: Guenter Roeck

hwmon: (pwm-fan) Add RPM support via external interrupt

2019-04-16T00:19:53+00:00

This adds RPM support to the pwm-fan driver in order to use with fancontrol/pwmconfig. This feature is intended for fans with a tachometer output signal, which generate a defined number of pulses per revolution. Signed-off-by: Stefan Wahren Reviewed-by: Robin Murphy Signed-off-by: Robin Murphy [groeck: Drop unused 'devattr' variable] Signed-off-by: Guenter Roeck

hwmon: (pwm-fan) Disable PWM if fetching cooling data fails

2019-04-16T00:19:23+00:00

In case pwm_fan_of_get_cooling_data() fails we should disable the PWM just like in the other error cases. Fixes: 2e5219c77183 ("hwmon: (pwm-fan) Read PWM FAN configuration from device tree") Cc: # 4.14+ Reported-by: Guenter Rock Signed-off-by: Stefan Wahren Signed-off-by: Guenter Roeck

hwmon: (pwm-fan) Add optional regulator support

2019-02-23T17:02:23+00:00

This adds optional regulator support to the pwm-fan driver. This is necessary for pwm fans which are powered by a switchable supply. Signed-off-by: Stefan Wahren Signed-off-by: Guenter Roeck