drm/amd/display: Add 'disable FEC for specific monitor' infrastructure to DC

Disabling FEC for specific monitors is sometimes required for debugging
while in the monitor bringup phase
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -970,6 +970,9 @@ static bool dc_link_detect_helper(struct dc_link *link,
 			break;
 		}
 
+		if (link->local_sink->edid_caps.panel_patch.disable_fec)
+			link->ctx->dc->debug.disable_fec = true;
+
 		// Check if edid is the same
 		if ((prev_sink != NULL) && ((edid_status == EDID_THE_SAME) || (edid_status == EDID_OK)))
 			same_edid = is_same_edid(&prev_sink->dc_edid, &sink->dc_edid);

drivers/gpu/drm/amd/display/dc/dc_types.h

@@ -231,6 +231,7 @@ struct dc_panel_patch {
 	unsigned int extra_t7_ms;
 	unsigned int skip_scdc_overwrite;
 	unsigned int delay_ignore_msa;
+	unsigned int disable_fec;
 };
 
 struct dc_edid_caps {