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Commit 91178796 authored by Yongqiang Sun's avatar Yongqiang Sun Committed by Alex Deucher
Browse files

drm/amd/display: disable eDP backlight for extend monitor only reboot use case. 



Signed-off-by: default avatarYongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 146a9f63

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

+27 −1
Original line number Diff line number Diff line
@@ -649,7 +649,31 @@ bool dc_enable_stereo( 
	return ret;

}



static void disable_eDP_not_in_use(struct dc *dc, struct dc_state *context)

{

	int i;

	struct dc_link *link = NULL;



	/* check if eDP panel is suppose to be set mode, if yes, no need to disable */

	for (i = 0; i < context->stream_count; i++) {

		if (context->streams[i]->signal == SIGNAL_TYPE_EDP)

			return;

	}



	/* check if there is an eDP panel not in use */

	for (i = 0; i < dc->link_count; i++) {

		if (dc->links[i]->local_sink &&

			dc->links[i]->local_sink->sink_signal == SIGNAL_TYPE_EDP) {

			link = dc->links[i];

			break;

		}

	}



	if (link) {

		dc->hwss.edp_backlight_control(link, false);

		dc->hwss.edp_power_control(link, false);

	}

}

/*

 * Applies given context to HW and copy it into current context.

 * It's up to the user to release the src context afterwards.
@@ -667,8 +691,10 @@ static enum dc_status dc_commit_state_no_check(struct dc *dc, struct dc_state *c 
	for (i = 0; i < context->stream_count; i++)

		dc_streams[i] =  context->streams[i];



	if (!dcb->funcs->is_accelerated_mode(dcb))

	if (!dcb->funcs->is_accelerated_mode(dcb)) {

		dc->hwss.enable_accelerated_mode(dc);

		disable_eDP_not_in_use(dc, context);

	}



	/* re-program planes for existing stream, in case we need to

	 * free up plane resource for later use