From 48841a20fc794cee0dcbcabee64e068bd6db2df7 Mon Sep 17 00:00:00 2001 From: Roman Li Date: Tue, 25 Jul 2017 14:50:44 -0400 Subject: [PATCH] drm/amd/display: Fix eDP panel light-up Power-down panel on disale only if sink exists otherwise it fails edid read during init sequence Signed-off-by: Roman Li Reviewed-by: Andrey Grodzovsky Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c index aac2420caefa..5bdcd5067116 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c @@ -114,7 +114,9 @@ void dp_disable_link_phy(struct dc_link *link, enum signal_type signal) if (signal == SIGNAL_TYPE_EDP) { link->link_enc->funcs->backlight_control(link->link_enc, false); - link->link_enc->funcs->power_control(link->link_enc, false); + if (link->dpcd_sink_count) + link->link_enc->funcs->power_control(link->link_enc, + false); } link->link_enc->funcs->disable_output(link->link_enc, signal); -- GitLab