drm/edid: Store all supported hdmi deep color modes in drm_display_info (5d02626d) · Commits · 戴 / test

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@gmail.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/drm_edid.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

include/drm/drm_crtc.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -121,6 +121,9 @@ 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;
		};

Admin message