On 2024/7/16 22:36, Randy Dunlap wrote:
Hi--
On 7/16/24 4:49 AM, Cryolitia PukNgae via B4 Relay wrote:
From: Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
Add GPD fan driver document
Signed-off-by: Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
---
Documentation/hwmon/gpd-fan.rst | 68 +++++++++++++++++++++++++++++++++++++++++
Documentation/hwmon/index.rst | 1 +
MAINTAINERS | 1 +
3 files changed, 70 insertions(+)
diff --git a/Documentation/hwmon/gpd-fan.rst b/Documentation/hwmon/gpd-fan.rst
new file mode 100644
index 000000000000..0e5bb8b5feed
--- /dev/null
+++ b/Documentation/hwmon/gpd-fan.rst
@@ -0,0 +1,68 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver gpd-fan
+=========================
+
+Authors:
+ - Cryolitia PukNgae <Cryolitia@xxxxxxxxx>
+
+Description:
No ending ':' above, please.
+------------
+
+Handheld devices from GPD 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 use.
used.
+
+ - 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)
so how is the module parameter used? like so?
gpd_fan_model=wm2
+
+Sysfs entries
+-------------
+
+The following attributes are supported:
+
+fan1_input
+ Read Only. Reads current fan RMP.
Should that be RPM
?
+
+pwm1_enable
+ Read Write. Enable manual fan control. Write "0" to disable control and run
Read/Write
or
Read-Write
+ 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].
Read-Write
or
Read/Write
+ When pwm1_enable is set to "1" (manual) write any value in the range [0-255]
+ to set fan speed.
+
+pwm1_mode
+ Read Only. Should always be "1" by now to indicate the fan being under PWM mode.
Drop by now
+
+update_interval
+ Read Write. Set the interval in milliseconds to update fan speed. The default
Read-Write
or
Read/Write
+ and minimum time is 1 second
Thanks for review! v2 sent.
