drm/amd/display: Power on front end during set mode.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -1722,6 +1722,9 @@ enum dc_status dce110_apply_ctx_to_hw(
 				context,
 				dc);
 
+		if (dc->hwss.power_on_front_end)
+			dc->hwss.power_on_front_end(dc, pipe_ctx, context);
+
 		if (DC_OK != status)
 			return status;
 	}

drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h

@@ -104,6 +104,11 @@ struct hw_sequencer_funcs {
 					enum pipe_gating_control power_gating);
 
 	void (*power_down_front_end)(struct core_dc *dc, struct pipe_ctx *pipe);
+
+	void (*power_on_front_end)(struct core_dc *dc,
+			struct pipe_ctx *pipe,
+			struct validate_context *context);
+
 	void (*update_info_frame)(struct pipe_ctx *pipe_ctx);
 
 	void (*enable_stream)(struct pipe_ctx *pipe_ctx);