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authorMario Kleiner <mario.kleiner.de@gmail.com>2017-04-21 17:05:08 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-05-02 10:37:45 +0200
commite345da82bd6bdfa8492f80b3ce4370acfd868d95 (patch)
tree2fa625bf3904e2fdc1dd21114b77482b4aaeb089
parent8b03d1ed2c43a2ba5ef3381322ee4515b97381bf (diff)
drm/edid: Add 10 bpc quirk for LGD 764 panel in HP zBook 17 G2drm-misc-next-fixes-2017-05-05
The builtin eDP panel in the HP zBook 17 G2 supports 10 bpc, as advertised by the Laptops product specs and verified via injecting a fixed edid + photometer measurements, but edid reports unknown depth, so drivers fall back to 6 bpc. Add a quirk to get the full 10 bpc. Cc: stable@vger.kernel.org Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1492787108-23959-1-git-send-email-mario.kleiner.de@gmail.com
-rw-r--r--drivers/gpu/drm/drm_edid.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index fad3d44e4642..2e55599816aa 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -80,6 +80,8 @@
#define EDID_QUIRK_FORCE_12BPC (1 << 9)
/* Force 6bpc */
#define EDID_QUIRK_FORCE_6BPC (1 << 10)
+/* Force 10bpc */
+#define EDID_QUIRK_FORCE_10BPC (1 << 11)
struct detailed_mode_closure {
struct drm_connector *connector;
@@ -122,6 +124,9 @@ static const struct edid_quirk {
{ "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 |
EDID_QUIRK_DETAILED_IN_CM },
+ /* LGD panel of HP zBook 17 G2, eDP 10 bpc, but reports unknown bpc */
+ { "LGD", 764, EDID_QUIRK_FORCE_10BPC },
+
/* LG Philips LCD LP154W01-A5 */
{ "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
{ "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },
@@ -4244,6 +4249,9 @@ 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_10BPC)
+ connector->display_info.bpc = 10;
+
if (quirks & EDID_QUIRK_FORCE_12BPC)
connector->display_info.bpc = 12;

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