1.. SPDX-License-Identifier: GPL-2.0-or-later 2 3Kernel driver cros_ec_hwmon 4=========================== 5 6Supported chips: 7 8 * ChromeOS embedded controllers. 9 10 Prefix: 'cros_ec' 11 12 Addresses scanned: - 13 14Author: 15 16 - Thomas Weißschuh <linux@weissschuh.net> 17 18Description 19----------- 20 21This driver implements support for hardware monitoring commands exposed by the 22ChromeOS embedded controller used in Chromebooks and other devices. 23 24The channel labels exposed via hwmon are retrieved from the EC itself. 25 26Fan and temperature readings are supported. PWM fan control is also supported if 27the EC also supports setting fan PWM values and fan mode. Note that EC will 28switch fan control mode back to auto when suspended. This driver will restore 29the fan state to what they were before suspended when resumed. 30If a fan is controllable, this driver will register that fan as a cooling device 31in the thermal framework as well. 32