Re: [PATCH v4] hwmon: Add fan monitoring support for HONOR FMI-XX

From: Guenter Roeck

Date: Tue Aug 18 2026 - 19:36:40 EST


On Sun, Aug 16, 2026 at 02:40:41AM +0300, Nikita Dubrovskih wrote:
> The HONOR FMI-XX firmware exposes a serialized \\GFNS ACPI method.
> It returns a status byte and a 16-bit fan speed in RPM for either of two
> firmware channels.
>
> Add a DMI-restricted, read-only hwmon driver using that firmware
> interface. The driver deliberately exposes no fan control or direct
> Embedded Controller access.
>
> The interface was validated on firmware 1.09 with fan channel 0
> reporting approximately 2500-2800 RPM. Channel 1 is readable and
> remained at 0 RPM during idle and a short CPU load.
>
> Signed-off-by: Nikita Dubrovskih <testname142@xxxxxxxxx>

Queued for 7.4.

Thanks,
Guenter