diff options
Diffstat (limited to 'Documentation/hwmon/cros_ec_hwmon.rst')
| -rw-r--r-- | Documentation/hwmon/cros_ec_hwmon.rst | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/hwmon/cros_ec_hwmon.rst b/Documentation/hwmon/cros_ec_hwmon.rst new file mode 100644 index 000000000000..6db812708325 --- /dev/null +++ b/Documentation/hwmon/cros_ec_hwmon.rst @@ -0,0 +1,31 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver cros_ec_hwmon +=========================== + +Supported chips: + + * ChromeOS embedded controllers. + + Prefix: 'cros_ec' + + Addresses scanned: - + +Author: + + - Thomas Weißschuh <linux@weissschuh.net> + +Description +----------- + +This driver implements support for hardware monitoring commands exposed by the +ChromeOS embedded controller used in Chromebooks and other devices. + +The channel labels exposed via hwmon are retrieved from the EC itself. + +Fan and temperature readings are supported. PWM fan control is also supported if +the EC also supports setting fan PWM values and fan mode. Note that EC will +switch fan control mode back to auto when suspended. This driver will restore +the fan state to what they were before suspended when resumed. +If a fan is controllable, this driver will register that fan as a cooling device +in the thermal framework as well. |