From: Mario Kleiner <mario.kleiner.de@xxxxxxxxx>
HDMI deep color setup must know which modes are supported if
it needs to degrade gracefully, as only 12 bpc / dc_36 is
guaranteed, but 10 bpc / dc_30 is optional. The maximum bpc
is not sufficient for this.
Signed-off-by: Mario Kleiner <mario.kleiner.de@xxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 3 +++
include/drm/drm_crtc.h | 3 +++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 7be2178..dfa9769 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3471,18 +3471,21 @@ static bool drm_assign_hdmi_deep_color_info(struct edid *edid,
if (hdmi[6] & DRM_EDID_HDMI_DC_30) {
dc_bpc = 10;
+ info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_30;
DRM_DEBUG("%s: HDMI sink does deep color 30.\n",
connector->name);
}
if (hdmi[6] & DRM_EDID_HDMI_DC_36) {
dc_bpc = 12;
+ info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_36;
DRM_DEBUG("%s: HDMI sink does deep color 36.\n",
connector->name);
}
if (hdmi[6] & DRM_EDID_HDMI_DC_48) {
dc_bpc = 16;
+ info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_48;
DRM_DEBUG("%s: HDMI sink does deep color 48.\n",
connector->name);
}
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 6c295df..d5288b2 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -120,6 +120,9 @@ struct drm_display_info {
enum subpixel_order subpixel_order;
u32 color_formats;
+ /* Mask of supported hdmi deep color modes */
+ u8 edid_hdmi_dc_modes;
+
u8 cea_rev;
};
--
1.8.3.1
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