| Message ID | 20180301063102.18457-2-kai.heng.feng@canonical.com |
|---|---|
| State | New |
| Headers | show |
| Series | Fix color dithering for Asus UX303LA | expand |
On 2018-03-01 14:31:02 , Kai-Heng Feng wrote: > Similar to commit e10aec652f31 ("drm/edid: Add 6 bpc quirk for display > AEO model 0."), the EDID reports "DFP 1.x compliant TMDS" but it support > 6bpc instead of 8 bpc. > > Hence, use 6 bpc quirk for this panel. > > Fixes: 196f954e2509 ("drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"") > BugLink: https://bugs.launchpad.net/bugs/1749420 > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> > Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com> > Cc: <stable@vger.kernel.org> # v4.8+ > Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> > Link: https://patchwork.freedesktop.org/patch/msgid/20180218085359.7817-1-kai.heng.feng@canonical.com > (cherry picked from commit 06998a756a3865817b87a129a7e5d5bb66dc1ec3) > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> > --- > drivers/gpu/drm/drm_edid.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > index 2e55599816aa..07cc7ee89eb1 100644 > --- a/drivers/gpu/drm/drm_edid.c > +++ b/drivers/gpu/drm/drm_edid.c > @@ -111,6 +111,9 @@ static const struct edid_quirk { > /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ > { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, > > + /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ > + { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, > + > /* Belinea 10 15 55 */ > { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, > { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, Acked-by: Khalid Elmously <khalid.elmously@canonical.com>
On 03/01/18 07:31, Kai-Heng Feng wrote: > Similar to commit e10aec652f31 ("drm/edid: Add 6 bpc quirk for display > AEO model 0."), the EDID reports "DFP 1.x compliant TMDS" but it support > 6bpc instead of 8 bpc. > > Hence, use 6 bpc quirk for this panel. > > Fixes: 196f954e2509 ("drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"") > BugLink: https://bugs.launchpad.net/bugs/1749420 > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> > Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com> > Cc: <stable@vger.kernel.org> # v4.8+ > Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> > Link: https://patchwork.freedesktop.org/patch/msgid/20180218085359.7817-1-kai.heng.feng@canonical.com > (cherry picked from commit 06998a756a3865817b87a129a7e5d5bb66dc1ec3) > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> > --- > drivers/gpu/drm/drm_edid.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > index 2e55599816aa..07cc7ee89eb1 100644 > --- a/drivers/gpu/drm/drm_edid.c > +++ b/drivers/gpu/drm/drm_edid.c > @@ -111,6 +111,9 @@ static const struct edid_quirk { > /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ > { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, > > + /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ > + { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, > + > /* Belinea 10 15 55 */ > { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, > { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, > Small quirk for an specific display model, so very small regression potential. Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 2e55599816aa..07cc7ee89eb1 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -111,6 +111,9 @@ static const struct edid_quirk { /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, + /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ + { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, + /* Belinea 10 15 55 */ { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
Similar to commit e10aec652f31 ("drm/edid: Add 6 bpc quirk for display AEO model 0."), the EDID reports "DFP 1.x compliant TMDS" but it support 6bpc instead of 8 bpc. Hence, use 6 bpc quirk for this panel. Fixes: 196f954e2509 ("drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"") BugLink: https://bugs.launchpad.net/bugs/1749420 Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com> Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180218085359.7817-1-kai.heng.feng@canonical.com (cherry picked from commit 06998a756a3865817b87a129a7e5d5bb66dc1ec3) Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> --- drivers/gpu/drm/drm_edid.c | 3 +++ 1 file changed, 3 insertions(+)