From: Mario Kleiner <mario.kleiner...@gmail.com>
The Sony PVM-2541A OLED high precision color display supports
both 10 bpc and 12 bpc hdmi deep color input, but its edid
does not signal any deep color support.
Add a quirk to force it being treated as a 12 bpc panel.
Signed-off-by: Mario Kleiner <mario.kleiner.de at gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/drm_edid.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 3989c18..643f830 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -70,6 +70,8 @@
#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
/* Force 8bpc */
#define EDID_QUIRK_FORCE_8BPC (1 << 8)
+/* Force 12bpc */
+#define EDID_QUIRK_FORCE_12BPC (1 << 9)
struct detailed_mode_closure {
struct drm_connector *connector;
@@ -125,6 +127,9 @@ static struct edid_quirk {
{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
+ /* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */
+ { "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC },
+
/* ViewSonic VA2026w */
{ "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
@@ -3660,6 +3665,9 @@ int drm_add_edid_modes(struct drm_connector *connector,
struct edid *edid)
if (quirks & EDID_QUIRK_FORCE_8BPC)
connector->display_info.bpc = 8;
+ if (quirks & EDID_QUIRK_FORCE_12BPC)
+ connector->display_info.bpc = 12;
+
return num_modes;
}
EXPORT_SYMBOL(drm_add_edid_modes);
--
1.8.3.1
