Commit 0c522b65 authored by Eric Yang's avatar Eric Yang Committed by Alex Deucher
Browse files

drm/amd/display: take dpms_off into account for edp turn off logic 



[why]
Previously we incorrectly skipped backlight control when stream is
present but dpms_off = true. This causes backlight to remain on in
the we boot up or resume into a external display only configuration
where VBIOS posted on the eDP.

[How]
Add dpms_off into the condition for edp need to turn off.

Signed-off-by: default avatarEric Yang <Eric.Yang2@amd.com>
Reviewed-by: default avatarYongqiang Sun <yongqiang.sun@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 8635c5a7

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

+8 −4
Original line number Diff line number Diff line
@@ -1520,7 +1520,7 @@ static struct dc_link *get_link_for_edp(struct dc *dc) 
	return NULL;

}



static struct dc_link *get_link_for_edp_not_in_use(

static struct dc_link *get_link_for_edp_to_turn_off(

		struct dc *dc,

		struct dc_state *context)

{
@@ -1529,9 +1529,13 @@ static struct dc_link *get_link_for_edp_not_in_use( 


	/* 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)

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

			if (context->streams[i]->dpms_off == true)

				return context->streams[i]->sink->link;

			else

				return NULL;

		}

	}



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

	for (i = 0; i < dc->link_count; i++) {
@@ -1572,7 +1576,7 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context) 
	}



	if (can_edp_fast_boot_optimize)

		edp_link_to_turnoff = get_link_for_edp_not_in_use(dc, context);

		edp_link_to_turnoff = get_link_for_edp_to_turn_off(dc, context);



	/* if OS doesn't light up eDP and eDP link is available, we want to disable

	 * If resume from S4/S5, should optimization.

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