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| author | Kurt Borja <kuurtb@gmail.com> | 2025-03-29 04:32:25 -0300 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2025-04-11 13:09:51 +0300 |
| commit | 07ac275981b1f11a58dd7bb7790eed66252b072c (patch) | |
| tree | 1f5786267f803da8154a6508155be694be276c14 /tools/perf/scripts/python/stackcollapse.py | |
| parent | d699907834959c87a6b6c5214d5e9a3e8ba6b5a1 (diff) | |
platform/x86: alienware-wmi-wmax: Add support for manual fan control
All models with the "AWCC" WMAX device support a way of manually
controlling fans.
The PWM duty cycle of a fan can't be controlled directly. Instead the
AWCC interface let's us tune a fan `boost` value, which has the
following empirically discovered, approximate behavior over the PWM
value:
pwm = pwm_base + (fan_boost / 255) * (pwm_max - pwm_base)
Where the pwm_base is the locked PWM value controlled by the FW and
fan_boost is a value between 0 and 255.
Expose this fan_boost knob as a custom HWMON attribute.
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: linux-hwmon@vger.kernel.org
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250329-hwm-v7-8-a14ea39d8a94@gmail.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions