Commit 4b3bb839 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Handle downstream facing ports w/o EDID 



Use drm_dp_downstream_mode() to get a suitable mode for downstream
facing ports which don't have an EDID.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-15-ville.syrjala@linux.intel.com


Reviewed-by: default avatarLyude Paul <lyude@redhat.com>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 7af655bc

drivers/gpu/drm/i915/display/intel_dp.c

+14 −1
Original line number Diff line number Diff line
@@ -6313,7 +6313,7 @@ static int intel_dp_get_modes(struct drm_connector *connector) 
	}



	/* if eDP has no EDID, fall back to fixed mode */

	if (intel_dp_is_edp(intel_attached_dp(to_intel_connector(connector))) &&

	if (intel_dp_is_edp(intel_attached_dp(intel_connector)) &&

	    intel_connector->panel.fixed_mode) {

		struct drm_display_mode *mode;
@@ -6325,6 +6325,19 @@ static int intel_dp_get_modes(struct drm_connector *connector) 
		}

	}



	if (!edid) {

		struct intel_dp *intel_dp = intel_attached_dp(intel_connector);

		struct drm_display_mode *mode;



		mode = drm_dp_downstream_mode(connector->dev,

					      intel_dp->dpcd,

					      intel_dp->downstream_ports);

		if (mode) {

			drm_mode_probed_add(connector, mode);

			return 1;

		}

	}



	return 0;

}