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Adds a driver that provides read only access to the fan speed for Microsoft Surface Pro devices. The fan speed is always regulated by the EC and cannot be influenced directly. Signed-off-by: Ivor Wanders <ivor@iwanders.net> Link: https://github.com/linux-surface/kernel/pull/144 Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20240131005856.10180-2-ivor@iwanders.net [groeck: - Declare surface_fan_hwmon_is_visible() static - Add dependency on SURFACE_AGGREGATOR_BUS ] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
25 lines
734 B
ReStructuredText
25 lines
734 B
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0-or-later
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Kernel driver surface_fan
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=========================
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Supported Devices:
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* Microsoft Surface Pro 9
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Author: Ivor Wanders <ivor@iwanders.net>
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Description
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-----------
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This provides monitoring of the fan found in some Microsoft Surface Pro devices,
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like the Surface Pro 9. The fan is always controlled by the onboard controller.
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Sysfs interface
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---------------
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======================= ======= =========================================
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Name Perm Description
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======================= ======= =========================================
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``fan1_input`` RO Current fan speed in RPM.
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======================= ======= =========================================
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