* [PATCH] drm/i915: Force DPCD backlight mode for HP CML 2020 system
@ 2020-04-07 7:53 Kai-Heng Feng
2020-04-08 7:23 ` Jani Nikula
0 siblings, 1 reply; 3+ messages in thread
From: Kai-Heng Feng @ 2020-04-07 7:53 UTC (permalink / raw)
To: maarten.lankhorst, mripard, tzimmermann, airlied, daniel
Cc: Kai-Heng Feng, open list:DRM DRIVERS, open list
There's another Samsung OLED panel needs to use DPCD aux interface to
control backlight.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
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 c6fbe6e6bc9d..d0cfee3b7a65 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1299,6 +1299,8 @@ 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 CML 2020 system */
+ { MFG(0x4c, 0x83), PROD_ID(0x45, 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
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] drm/i915: Force DPCD backlight mode for HP CML 2020 system
2020-04-07 7:53 [PATCH] drm/i915: Force DPCD backlight mode for HP CML 2020 system Kai-Heng Feng
@ 2020-04-08 7:23 ` Jani Nikula
2020-10-07 7:01 ` Kai-Heng Feng
0 siblings, 1 reply; 3+ messages in thread
From: Jani Nikula @ 2020-04-08 7:23 UTC (permalink / raw)
To: Kai-Heng Feng, maarten.lankhorst, mripard, tzimmermann, airlied, daniel
Cc: Kai-Heng Feng, open list, open list:DRM DRIVERS
On Tue, 07 Apr 2020, Kai-Heng Feng <kai.heng.feng@canonical.com> wrote:
> There's another Samsung OLED panel needs to use DPCD aux interface to
> control backlight.
Acked-by: Jani Nikula <jani.nikula@intel.com>
>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> ---
> 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 c6fbe6e6bc9d..d0cfee3b7a65 100644
> --- a/drivers/gpu/drm/drm_dp_helper.c
> +++ b/drivers/gpu/drm/drm_dp_helper.c
> @@ -1299,6 +1299,8 @@ 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 CML 2020 system */
> + { MFG(0x4c, 0x83), PROD_ID(0x45, 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
--
Jani Nikula, Intel Open Source Graphics Center
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] drm/i915: Force DPCD backlight mode for HP CML 2020 system
2020-04-08 7:23 ` Jani Nikula
@ 2020-10-07 7:01 ` Kai-Heng Feng
0 siblings, 0 replies; 3+ messages in thread
From: Kai-Heng Feng @ 2020-10-07 7:01 UTC (permalink / raw)
To: David Airlie
Cc: Jani Nikula, Maarten Lankhorst, mripard, Thomas Zimmermann,
Daniel Vetter, open list, open list:DRM DRIVERS
> On Apr 8, 2020, at 15:23, Jani Nikula <jani.nikula@linux.intel.com> wrote:
>
> On Tue, 07 Apr 2020, Kai-Heng Feng <kai.heng.feng@canonical.com> wrote:
>> There's another Samsung OLED panel needs to use DPCD aux interface to
>> control backlight.
>
> Acked-by: Jani Nikula <jani.nikula@intel.com>
David,
Can you please merge this patch? Thanks.
Kai-Heng
>
>>
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
>> ---
>> 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 c6fbe6e6bc9d..d0cfee3b7a65 100644
>> --- a/drivers/gpu/drm/drm_dp_helper.c
>> +++ b/drivers/gpu/drm/drm_dp_helper.c
>> @@ -1299,6 +1299,8 @@ 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 CML 2020 system */
>> + { MFG(0x4c, 0x83), PROD_ID(0x45, 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
>
> --
> Jani Nikula, Intel Open Source Graphics Center
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-10-07 7:01 UTC | newest]
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2020-04-07 7:53 [PATCH] drm/i915: Force DPCD backlight mode for HP CML 2020 system Kai-Heng Feng
2020-04-08 7:23 ` Jani Nikula
2020-10-07 7:01 ` Kai-Heng Feng
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