2 Commits

Author	SHA1	Message	Date
Joshua Grisham	6c00f29f74	ACPI: fan: Add fan speed reporting for fans with only _FST ... Add support for ACPI fans with _FST to report their speed even if they do not support fan control. As suggested by Armin Wolf [1] and per the Windows Thermal Management Design Guide [2], Samsung Galaxy Book series devices (and possibly many more devices where the Windows guide was strictly followed) only implement the _FST method and do not support ACPI-based fan control. Currently, these fans are not supported by the kernel driver but this patch will make some very small adjustments to allow them to be supported. This patch is tested and working for me on a Samsung Galaxy Book2 Pro whose DSDT (and several other Samsung Galaxy Book series notebooks which currently have the same issue) can be found at [3]. Link: https://lore.kernel.org/platform-driver-x86/53c5075b-1967-45d0-937f-463912dd966d@gmx.de [1] Link: https://learn.microsoft.com/en-us/windows-hardware/design/device-experiences/design-guide [2] Link: 8e3087a06b/dsdt [3] Signed-off-by: Joshua Grisham <josh@joshuagrisham.com> Reviewed-by: Armin Wolf <W_Armin@gmx.de> Link: https://patch.msgid.link/20250222094407.9753-1-josh@joshuagrisham.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	2025-02-25 21:48:51 +01:00
Armin Wolf	35c50d853a	ACPI: fan: Add hwmon support ... Currently, the driver does only support a custom sysfs interface to allow userspace to read the fan speed. Add support for the standard hwmon interface so users can read the fan speed with standard tools like "sensors". Reviewed-by: Andy Shevchenko <andy@kernel.org> Signed-off-by: Armin Wolf <W_Armin@gmx.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	2024-05-28 11:53:35 +02:00