Re: [PATCH] drm/i915: Force DPCD backlight mode for HP Spectre x360 Convertible 13t-aw100

From: Kai-Heng Feng
Date: Wed Oct 07 2020 - 03:01:42 EST




> On Apr 8, 2020, at 15:22, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
>
> On Tue, 07 Apr 2020, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote:
>>> On Mar 27, 2020, at 19:03, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote:
>>>
>>> Hi,
>>>
>>>> On Mar 23, 2020, at 13:35, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote:
>>>>
>>>> There's another OLED panel needs to use DPCD aux interface to control
>>>> backlight.
>>>>
>>>> BugLink: https://bugs.launchpad.net/bugs/1860303
>>>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
>>>
>>> Would it be possible to review this?
>>> I'd like to send a similar quirk for a new panel, and I want to avoid causing any merge conflict.
>>
>> Another gentle ping...
>
> Can't really review, but if you say that's needed...
>
> Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>

David,

Can you please merge this patch? Thanks.

Kai-Heng

>
>>
>>>
>>> Kai-Heng
>>>
>>>> ---
>>>> drivers/gpu/drm/drm_dp_helper.c | 2 ++
>>>> 1 file changed, 2 insertions(+)
>>>>
>>>> diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
>>>> index 8ba4531e808d..a0d4314663de 100644
>>>> --- a/drivers/gpu/drm/drm_dp_helper.c
>>>> +++ b/drivers/gpu/drm/drm_dp_helper.c
>>>> @@ -1301,6 +1301,8 @@ static const struct edid_quirk edid_quirk_list[] = {
>>>> * only supports DPCD backlight controls
>>>> */
>>>> { MFG(0x4c, 0x83), PROD_ID(0x41, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
>>>> + /* HP Spectre x360 Convertible 13t-aw100 */
>>>> + { MFG(0x4c, 0x83), PROD_ID(0x42, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
>>>> /*
>>>> * Some Dell CML 2020 systems have panels support both AUX and PWM
>>>> * backlight control, and some only support AUX backlight control. All
>>>> --
>>>> 2.17.1
>>>>
>>>
>>
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>
> --
> Jani Nikula, Intel Open Source Graphics Center