diff options
| author | Ivor Wanders <ivor@iwanders.net> | 2024-01-30 19:58:55 -0500 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2024-02-25 12:37:36 -0800 |
| commit | d612bf839f618b090672356889e3bbdac67aebd5 (patch) | |
| tree | 44e5479fdffb90e0e1fa757f7a3af3dc163e6fe5 /Documentation | |
| parent | cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 (diff) | |
hwmon: add fan speed monitoring driver for Surface devices
Adds a driver that provides read only access to the fan speed for Microsoft
Surface Pro devices. The fan speed is always regulated by the EC and cannot
be influenced directly.
Signed-off-by: Ivor Wanders <ivor@iwanders.net>
Link: https://github.com/linux-surface/kernel/pull/144
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240131005856.10180-2-ivor@iwanders.net
[groeck:
- Declare surface_fan_hwmon_is_visible() static
- Add dependency on SURFACE_AGGREGATOR_BUS
]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/index.rst | 1 | ||||
| -rw-r--r-- | Documentation/hwmon/surface_fan.rst | 25 |
2 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index f16c6dfaec7d..8f73badecba1 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -209,6 +209,7 @@ Hardware Monitoring Kernel Drivers smsc47m1 sparx5-temp stpddc60 + surface_fan sy7636a-hwmon tc654 tc74 diff --git a/Documentation/hwmon/surface_fan.rst b/Documentation/hwmon/surface_fan.rst new file mode 100644 index 000000000000..07942574c4f0 --- /dev/null +++ b/Documentation/hwmon/surface_fan.rst @@ -0,0 +1,25 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver surface_fan +========================= + +Supported Devices: + + * Microsoft Surface Pro 9 + +Author: Ivor Wanders <ivor@iwanders.net> + +Description +----------- + +This provides monitoring of the fan found in some Microsoft Surface Pro devices, +like the Surface Pro 9. The fan is always controlled by the onboard controller. + +Sysfs interface +--------------- + +======================= ======= ========================================= +Name Perm Description +======================= ======= ========================================= +``fan1_input`` RO Current fan speed in RPM. +======================= ======= ========================================= |