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| -rw-r--r-- | Documentation/hwmon/gpd-fan.rst | 78 | ||||
| -rw-r--r-- | Documentation/hwmon/index.rst | 1 | ||||
| -rw-r--r-- | MAINTAINERS | 1 |
3 files changed, 80 insertions, 0 deletions
diff --git a/Documentation/hwmon/gpd-fan.rst b/Documentation/hwmon/gpd-fan.rst new file mode 100644 index 000000000000..0b56b70e6264 --- /dev/null +++ b/Documentation/hwmon/gpd-fan.rst @@ -0,0 +1,78 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver gpd-fan +========================= + +Author: + - Cryolitia PukNgae <cryolitia@uniontech.com> + +Description +------------ + +Handheld devices from Shenzhen GPD Technology Co., Ltd. provide fan readings +and fan control through their embedded controllers. + +Supported devices +----------------- + +Currently the driver supports the following handhelds: + + - GPD Win Mini (7840U) + - GPD Win Mini (8840U) + - GPD Win Mini (HX370) + - GPD Pocket 4 + - GPD Duo + - GPD Win Max 2 (6800U) + - GPD Win Max 2 2023 (7840U) + - GPD Win Max 2 2024 (8840U) + - GPD Win Max 2 2025 (HX370) + - GPD Win 4 (6800U) + - GPD Win 4 (7840U) + +Module parameters +----------------- + +gpd_fan_board + Force specific which module quirk should be used. + Use it like "gpd_fan_board=wm2". + + - wm2 + - GPD Win 4 (7840U) + - GPD Win Max 2 (6800U) + - GPD Win Max 2 2023 (7840U) + - GPD Win Max 2 2024 (8840U) + - GPD Win Max 2 2025 (HX370) + - win4 + - GPD Win 4 (6800U) + - win_mini + - GPD Win Mini (7840U) + - GPD Win Mini (8840U) + - GPD Win Mini (HX370) + - GPD Pocket 4 + - GPD Duo + +Sysfs entries +------------- + +The following attributes are supported: + +fan1_input + Read Only. Reads current fan RPM. + +pwm1_enable + Read/Write. Enable manual fan control. Write "0" to disable control and run + at full speed. Write "1" to set to manual, write "2" to let the EC control + decide fan speed. Read this attribute to see current status. + + NB：In consideration of the safety of the device, when setting to manual mode, + the pwm speed will be set to the maximum value (255) by default. You can set + a different value by writing pwm1 later. + +pwm1 + Read/Write. Read this attribute to see current duty cycle in the range + [0-255]. When pwm1_enable is set to "1" (manual) write any value in the + range [0-255] to set fan speed. + + NB: Many boards (except listed under wm2 above) don't support reading the + current pwm value in auto mode. That will just return EOPNOTSUPP. In manual + mode it will always return the real value. diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index b4d26a6fa3a5..1803a43f6216 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -82,6 +82,7 @@ Hardware Monitoring Kernel Drivers gigabyte_waterforce gsc-hwmon gl518sm + gpd-fan gxp-fan-ctrl hih6130 hp-wmi-sensors diff --git a/MAINTAINERS b/MAINTAINERS index c21daede716d..5642fd647326 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10425,6 +10425,7 @@ GPD FAN DRIVER M: Cryolitia PukNgae <cryolitia@uniontech.com> L: linux-hwmon@vger.kernel.org S: Maintained +F: Documentation/hwmon/gpd-fan.rst F: drivers/hwmon/gpd-fan.c GPD POCKET FAN DRIVER |