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Commit 5d02626d authored by Mario Kleiner's avatar Mario Kleiner Committed by Alex Deucher
Browse files

drm/edid: Store all supported hdmi deep color modes in drm_display_info 



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: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d71c48f6

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;

};