From 66c2b84ba6256bc5399eed45582af9ebb3ba2c15 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 11 Feb 2015 18:34:36 -0500 Subject: [PATCH] drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary Don't restrict it to just eDP panels. Some LVDS bridge chips require this. Fixes blank panels on resume on certain laptops. Noticed by mrnuke on IRC. bug: https://bugs.freedesktop.org/show_bug.cgi?id=42960 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/atombios_dp.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index db42a670f995..5bf825dfaa09 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -623,10 +623,8 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info) drm_dp_dpcd_writeb(dp_info->aux, DP_DOWNSPREAD_CTRL, 0); - if ((dp_info->connector->connector_type == DRM_MODE_CONNECTOR_eDP) && - (dig->panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE)) { + if (dig->panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE) drm_dp_dpcd_writeb(dp_info->aux, DP_EDP_CONFIGURATION_SET, 1); - } /* set the lane count on the sink */ tmp = dp_info->dp_lane_count; -- 2.20.1