drm/amd/display: Return UPDATE_TYPE_FULL on writeback update

Should do full update when display writeback is updated.
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Duke Du <Duke.Du@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1516,6 +1516,11 @@ static enum surface_update_type check_update_surfaces_for_stream(
 
 		if (stream_update->dpms_off)
 			return UPDATE_TYPE_FULL;
+
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+		if (stream_update->wb_update)
+			return UPDATE_TYPE_FULL;
+#endif
 	}
 
 	for (i = 0 ; i < surface_count; i++) {

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

@@ -373,6 +373,7 @@ bool dc_stream_add_writeback(struct dc *dc,
 {
 	bool isDrc = false;
 	int i = 0;
+	struct dwbc *dwb;
 
 	if (stream == NULL) {
 		dm_error("DC: dc_stream is NULL!\n");
@@ -391,7 +392,8 @@ bool dc_stream_add_writeback(struct dc *dc,
 
 	wb_info->dwb_params.out_transfer_func = stream->out_transfer_func;
 
-
+	dwb = dc->res_pool->dwbc[wb_info->dwb_pipe_inst];
+	dwb->dwb_is_drc = false;
 
 	/* recalculate and apply DML parameters */
 

drivers/gpu/drm/amd/display/dc/inc/hw/dwb.h

@@ -127,6 +127,7 @@ struct dwbc {
 	enum dc_transfer_func_predefined tf;
 	enum dc_color_space output_color_space;
 	bool dwb_is_efc_transition;
+	bool dwb_is_drc;
 	int wb_src_plane_inst;/*hubp, mpcc, inst*/
 	bool update_privacymask;
 	uint32_t mask_id;