ed264e8a7d
Sensors driver for OXP Handhelds from One-Netbook that expose fan reading and control via hwmon sysfs. As far as I could gather all OXP boards have the same DMI strings and they can be told appart only by the boot cpu vendor (Intel/AMD). Currently only AMD boards are supported since Intel have different EC registers and values to read/write. Fan control is provided via pwm interface in the range [0-255]. AMD boards have [0-100] as range in the EC, the written value is scaled to accommodate for that. Signed-off-by: Joaquín Ignacio Aramendía <samsagax@gmail.com> Link: https://lore.kernel.org/r/20221104140659.593608-1-samsagax@gmail.com [groeck: Removed misleading comment about module_platform_driver()] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
35 lines
981 B
ReStructuredText
35 lines
981 B
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0-or-later
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Kernel driver oxp-sensors
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=========================
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Author:
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- Joaquín Ignacio Aramendía <samsagax@gmail.com>
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Description:
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------------
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One X Player devices from One Netbook provide fan readings and fan control
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through its Embedded Controller.
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Currently only supports AMD boards from the One X Player lineup. Intel boards
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could be supported if we could figure out the EC registers and values to write
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to since the EC layout and model is different.
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Sysfs entries
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-------------
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The following attributes are supported:
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fan1_input
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Read Only. Reads current fan RMP.
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pwm1_enable
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Read Write. Enable manual fan control. Write "1" to set to manual, write "0"
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to let the EC control de fan speed. Read this attribute to see current status.
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pwm1
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Read Write. Read this attribute to see current duty cycle in the range [0-255].
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When pwm1_enable is set to "1" (manual) write any value in the range [0-255]
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to set fan speed.
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