[SRU] [F/Unstable] [PATCH 0/1] Add DCPD backlight support for HP CML system

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1871589

PS. Please apply this patch on top of "Add DPCD backlight support for
Spectre x360 Convertible 13t-aw100".

[Impact]
PWM backlight doesn't work on an upcoming HP CML system.

[Fix]
Use DPCD to control backlight instead of PWM.

[Test]
With this patch applied, changing backlight sysfs can change the
brightness.

[Regression Potential]
Low. This is specific to panel ID, which is unique.


Kai-Heng Feng (1):
  drm/i915: Force DPCD backlight mode for HP CML 2020 system

 drivers/gpu/drm/drm_dp_helper.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
2.17.1