From: Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
Add GPD fan driver document
Signed-off-by: Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
---
Documentation/hwmon/gpd-fan.rst | 63 +++++++++++++++++++++++++++++++++++++++++
Documentation/hwmon/index.rst | 1 +
MAINTAINERS | 1 +
3 files changed, 65 insertions(+)
diff --git a/Documentation/hwmon/gpd-fan.rst b/Documentation/hwmon/gpd-fan.rst
new file mode 100644
index 000000000000..68189cdc5b45
--- /dev/null
+++ b/Documentation/hwmon/gpd-fan.rst
@@ -0,0 +1,63 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver gpd-fan
+=========================
+
+Author:
+ - Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
+
+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 Max 2
+ - GPD Win Max 2 2023 (7840U)
+ - GPD Win Max 2 2024 (8840U)
+ - GPD Win 4 (6800U)
+ - GPD Win 4 (7840U)
+
+Module parameters
+-----------------
+
+gpd_fan_model
+ Force specific which module quirk should be used.
+ Use it like "gpd_fan_model=wm2".
+
+ - wm2
+ - GPD Win 4 (7840U)
+ - GPD Win Max 2 (6800U)
+ - GPD Win Max 2 2023 (7840U)
+ - GPD Win Max 2 2024 (8840U)
+ - win4
+ - GPD Win 4 (6800U)
+ - win_mini
+ - GPD Win Mini (7840U)
+ - GPD Win Mini (8840U)
+
+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.
+
+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.
+
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 913c11390a45..97add26f53b7 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -80,6 +80,7 @@ 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 9ced72cec42b..5079b5bfe4b1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9376,6 +9376,7 @@ GPD FAN DRIVER
M: Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
L: linux-hwmon@xxxxxxxxxxxxxxx
S: Maintained
+F: Documentation/hwmon/gpd-fan.rst
F: drivers/hwmon/gpd-fan.c
GPD POCKET FAN DRIVER
--
2.45.2
