Presented patches add support for Odroid's U3 optional CPU FAN, which uses PWM
subsystem for low level control.
After successful probe it registers itself as a cooling device for thermal
subsystem. To preserve the ability to use this fan as a PWM device stubs for
thermal_of_cooling_device_register() and thermal_cdev_update() have been added.
Additionally, devices without support for DTS are still supported.
To provide correct functionality, new properties to device tree description for
Exynos4412 and in particular Odroid U3 have been added.
Those patches were tested on Exynos4412 - Odroid U3 board.
Patches were applied on:
linux-soc-thermal/next branch (Linux 3.19-rc5)
SHA1: 252454f5cbda2c6b40c5d36f58cac2938437b85d
Kamil Debski (1):
ARM: dts: Add pwm-fan node to the Odroid-U3 board
Lukasz Majewski (7):
thermal: Provide stub for thermal_of_cooling_device_register()
function
thermal: Provide stub for thermal_cdev_update() function
Documentation: dts: Documentation entry to explain how to use PWM FAN
as a cooling device
ARM: dts: Add properties to use pwm-fan device as a cooling device in
Odroid U3
hwmon: pwm-fan: Extract __set_pwm() function to only modify PWM duty
cycle
hwmon: pwm-fan: Read PWM FAN configuration from device tree
hwmon: pwm-fan: Code for using PWM FAN as a cooling device
.../devicetree/bindings/hwmon/pwm-fan.txt | 20 +++
arch/arm/boot/dts/exynos4.dtsi | 2 +-
arch/arm/boot/dts/exynos4412-odroidu3.dts | 44 ++++++
drivers/hwmon/pwm-fan.c | 167 +++++++++++++++++++--
include/linux/thermal.h | 22 ++-
5 files changed, 236 insertions(+), 19 deletions(-)
--
2.0.0.rc2
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