1.. SPDX-License-Identifier: GPL-2.0-or-later 2 3Kernel driver surface_fan 4========================= 5 6Supported Devices: 7 8 * Microsoft Surface Pro 9 9 10Author: Ivor Wanders <ivor@iwanders.net> 11 12Description 13----------- 14 15This provides monitoring of the fan found in some Microsoft Surface Pro devices, 16like the Surface Pro 9. The fan is always controlled by the onboard controller. 17 18Sysfs interface 19--------------- 20 21======================= ======= ========================================= 22Name Perm Description 23======================= ======= ========================================= 24``fan1_input`` RO Current fan speed in RPM. 25======================= ======= ========================================= 26