49 lines
1.1 KiB
ReStructuredText
49 lines
1.1 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0-or-later
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Kernel driver cros_ec_hwmon
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===========================
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Supported chips:
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* ChromeOS embedded controllers.
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Prefix: 'cros_ec'
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Addresses scanned: -
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Author:
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- Thomas Weißschuh <linux@weissschuh.net>
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Description
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-----------
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This driver implements support for hardware monitoring commands exposed by the
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ChromeOS embedded controller used in Chromebooks and other devices.
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The channel labels exposed via hwmon are retrieved from the EC itself.
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Supported features
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------------------
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Fan readings
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Always supported.
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Fan target speed
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If supported by the EC.
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Temperature readings
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Always supported.
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Temperature thresholds
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If supported by the EC.
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PWM fan control
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If the EC also supports setting fan PWM values and fan mode.
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Note that EC will switch fan control mode back to auto when suspended.
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This driver will restore the fan state to what they were before suspended when resumed.
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If a fan is controllable, this driver will register that fan as a cooling device
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in the thermal framework as well.
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