mbox series

[0/1,SRU,F,G,H,OEM-5.6] Add dpcd backlight control

Message ID 20201126092011.342429-1-acelan.kao@canonical.com
Headers show
Series Add dpcd backlight control | expand

Message

AceLan Kao Nov. 26, 2020, 9:20 a.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1905663

[Impact]
There is a new OLED panel that is required to be listed in the EDID quirk
to make its backlight work.

[Fix]
The commit adds its EDID to the quirk.
https://lkml.org/lkml/2020/11/19/1564

[Test]
Verified on Dell's platform with this panel.

[Where problems could occur]
Only if this panel switches to use PWM mode only, and doesn't support DPCD
backlight.

Kai-Chuan Hsieh (1):
  UBUNTU: SAUCE: drm/dp: Add dpcd backlight control for 0x4c83 0x4f41

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

Comments

Timo Aaltonen Dec. 2, 2020, 6:49 a.m. UTC | #1 
On 26.11.2020 11.20, AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1905663
> 
> [Impact]
> There is a new OLED panel that is required to be listed in the EDID quirk
> to make its backlight work.
> 
> [Fix]
> The commit adds its EDID to the quirk.
> https://lkml.org/lkml/2020/11/19/1564
> 
> [Test]
> Verified on Dell's platform with this panel.
> 
> [Where problems could occur]
> Only if this panel switches to use PWM mode only, and doesn't support DPCD
> backlight.
> 
> Kai-Chuan Hsieh (1):
>    UBUNTU: SAUCE: drm/dp: Add dpcd backlight control for 0x4c83 0x4f41
> 
>   drivers/gpu/drm/drm_dp_helper.c | 1 +
>   1 file changed, 1 insertion(+)
> 

applied to oem-5.6, thanks
Seth Forshee Dec. 18, 2020, 11:07 p.m. UTC | #2 
On Thu, Nov 26, 2020 at 05:20:10PM +0800, AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1905663
> 
> [Impact]
> There is a new OLED panel that is required to be listed in the EDID quirk
> to make its backlight work.
> 
> [Fix]
> The commit adds its EDID to the quirk.
> https://lkml.org/lkml/2020/11/19/1564
> 
> [Test]
> Verified on Dell's platform with this panel.
> 
> [Where problems could occur]
> Only if this panel switches to use PWM mode only, and doesn't support DPCD
> backlight.

Applied with context adjustments to unstable/master. Thanks!