Messages in this thread | | | From | Jani Nikula <> | Subject | Re: [PATCH] drm/i915: Force DPCD backlight mode for HP CML 2020 system | Date | Wed, 08 Apr 2020 10:23:07 +0300 |
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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
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