Commit 426714f8 authored by Paul Hsieh's avatar Paul Hsieh Committed by Alex Deucher
Browse files

drm/amd/display: power down eDP if eDP not present 



[Why]
When init, driver will power up eDP to check eDP
present or not. If eDP not present, driver doesn't
power off eDP VDD cause power consumption.

[How]
If eDP is not present when detection, power off eDP
VDD.

Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarPaul Hsieh <Paul.Hsieh@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e89d890c

drivers/gpu/drm/amd/display/dc/link/link_detection.c

+5 −0
Original line number Diff line number Diff line
@@ -1227,6 +1227,11 @@ bool link_detect_connection_type(struct dc_link *link, enum dc_connection_type * 
		/* TODO: need to do the actual detection */

	} else {

		*type = dc_connection_none;

		if (link->connector_signal == SIGNAL_TYPE_EDP) {

			/* eDP is not connected, power down it */

			if (!link->dc->config.edp_no_power_sequencing)

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

		}

	}



	return true;