| Message ID | 20200407075353.12747-1-kai.heng.feng@canonical.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915: Force DPCD backlight mode for HP CML 2020 system | expand |
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
> 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
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
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(+)