APPLIED[G/Unstable]: [SRU] [F/G/Unstable/OEM-5.6] [PATCH 0/3] Enable brightness control on HP DreamColor panel

Seth Forshee seth.forshee at canonical.com
Thu Oct 8 21:56:08 UTC 2020


On Wed, Oct 07, 2020 at 07:53:56PM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1898865
> 
> [Impact]
> Brightness on HP DreamColor panel, which can be found on new HP Zbook
> Studio, cannot be changed.
> 
> [Fix]
> Let DRM know the panel should use DPCD instead of PWM to control
> backlight.
> 
> [Test]
> With the patch applied, we can change the brightness on HP Zbook Studio.
> 
> [Regression Potential]
> If there's any panel in the quirk list depends on checking brightness
> control capability then this change will have an impact. However it's
> rather unlikely because it defeats the purpose of the quirk list.

Applied to groovy/master-next and unstable/master, thanks!



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