#define EDID_QUIRK_FORCE_8BPC (1 << 8)
/* Force 12bpc */
#define EDID_QUIRK_FORCE_12BPC (1 << 9)
+/* Force 6bpc */
+#define EDID_QUIRK_FORCE_6BPC (1 << 10)
struct detailed_mode_closure {
struct drm_connector *connector;
/* Unknown Acer */
{ "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED },
+ /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */
+ { "AEO", 0, EDID_QUIRK_FORCE_6BPC },
+
/* Belinea 10 15 55 */
{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
/* HDMI deep color modes supported? Assign to info, if so */
drm_assign_hdmi_deep_color_info(edid, info, connector);
+ /*
+ * Digital sink with "DFP 1.x compliant TMDS" according to EDID 1.3?
+ *
+ * For such displays, the DFP spec 1.0, section 3.10 "EDID support"
+ * tells us to assume 8 bpc color depth if the EDID doesn't have
+ * extensions which tell otherwise.
+ */
+ if ((info->bpc == 0) && (edid->revision < 4) &&
+ (edid->input & DRM_EDID_DIGITAL_TYPE_DVI)) {
+ info->bpc = 8;
+ DRM_DEBUG("%s: Assigning DFP sink color depth as %d bpc.\n",
+ connector->name, info->bpc);
+ }
+
/* Only defined for 1.4 with digital displays */
if (edid->revision < 4)
return;
drm_add_display_info(edid, &connector->display_info, connector);
+ if (quirks & EDID_QUIRK_FORCE_6BPC)
+ connector->display_info.bpc = 6;
+
if (quirks & EDID_QUIRK_FORCE_8BPC)
connector->display_info.bpc = 8;