1*d612bf83SIvor Wanders.. SPDX-License-Identifier: GPL-2.0-or-later 2*d612bf83SIvor Wanders 3*d612bf83SIvor WandersKernel driver surface_fan 4*d612bf83SIvor Wanders========================= 5*d612bf83SIvor Wanders 6*d612bf83SIvor WandersSupported Devices: 7*d612bf83SIvor Wanders 8*d612bf83SIvor Wanders * Microsoft Surface Pro 9 9*d612bf83SIvor Wanders 10*d612bf83SIvor WandersAuthor: Ivor Wanders <ivor@iwanders.net> 11*d612bf83SIvor Wanders 12*d612bf83SIvor WandersDescription 13*d612bf83SIvor Wanders----------- 14*d612bf83SIvor Wanders 15*d612bf83SIvor WandersThis provides monitoring of the fan found in some Microsoft Surface Pro devices, 16*d612bf83SIvor Wanderslike the Surface Pro 9. The fan is always controlled by the onboard controller. 17*d612bf83SIvor Wanders 18*d612bf83SIvor WandersSysfs interface 19*d612bf83SIvor Wanders--------------- 20*d612bf83SIvor Wanders 21*d612bf83SIvor Wanders======================= ======= ========================================= 22*d612bf83SIvor WandersName Perm Description 23*d612bf83SIvor Wanders======================= ======= ========================================= 24*d612bf83SIvor Wanders``fan1_input`` RO Current fan speed in RPM. 25*d612bf83SIvor Wanders======================= ======= ========================================= 26