From b096f626a6827ad2ced5ebdbdc04e62422d463f6 Mon Sep 17 00:00:00 2001 From: Yurii Pavlovskyi Date: Tue, 14 May 2019 21:07:05 +0200 Subject: platform/x86: asus-wmi: Switch fan boost mode The WMI exposes a write-only device ID where up to three fan modes can be switched on some laptops (TUF Gaming FX505GM). There is a hotkey combination Fn-F5 that does have a fan icon, which is designed to toggle between fan modes. The DSTS of the device ID returns information about the presence of this capability and the presence of each of the two additional fan modes as a bitmask (0x01 - overboost present, 0x02 - silent present) [1]. Add a SysFS entry that reads the last written value and updates value in WMI on write and a hotkey handler that toggles the modes taking into account their availability according to DSTS. Modes: * 0x00 - normal or balanced, * 0x01 - overboost, increased fan RPM, * 0x02 - silent, decreased fan RPM [1] Link: https://lkml.org/lkml/2019/4/12/110 Signed-off-by: Yurii Pavlovskyi Suggested-by: Daniel Drake Signed-off-by: Andy Shevchenko --- Documentation/ABI/testing/sysfs-platform-asus-wmi | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Documentation/ABI') diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi index 019e1e29370e..87ae5cc983bf 100644 --- a/Documentation/ABI/testing/sysfs-platform-asus-wmi +++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi @@ -36,3 +36,13 @@ KernelVersion: 3.5 Contact: "AceLan Kao" Description: Resume on lid open. 1 means on, 0 means off. + +What: /sys/devices/platform//fan_mode +Date: Apr 2019 +KernelVersion: 5.2 +Contact: "Yurii Pavlovskyi" +Description: + Fan boost mode: + * 0 - normal, + * 1 - overboost, + * 2 - silent -- cgit v1.2.3-70-g09d2