Commit 671a6246 authored Sep 22, 2017 by Yongqiang Sun Committed by Alex Deucher Oct 21, 2017

drm/amd/display: Early return when turn off a plane.



In case of two monitor connected and turn off one of the monitors,
OTG0 is locked after graphic plane off due to redundant programming
front end regs.

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

parent 69b516c9

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

+7 −1

Original line number	Diff line number	Diff line
		@@ -1190,8 +1190,14 @@ static void commit_planes_for_stream(struct dc *dc,
		}
		}

		if (surface_count == 0)
		if (surface_count == 0) {
		/*
		* In case of turning off screen, no need to program front end a second time.
		* just return after program front end.
		*/
		dc->hwss.apply_ctx_for_surface(dc, stream, surface_count, context);
		return;
		}

		/* Lock pipes for provided surfaces, or all active if full update*/
		for (i = 0; i < surface_count; i++) {