drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary
authorAlex Deucher <alexander.deucher@amd.com>
Wed, 11 Feb 2015 23:34:36 +0000 (18:34 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 13 Feb 2015 15:03:33 +0000 (10:03 -0500)
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 <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
drivers/gpu/drm/radeon/atombios_dp.c

index db42a670f9957c7fd6c3698b2c0be178ac6a02d2..5bf825dfaa098ec6b6ad8f479856ce676f51ba21 100644 (file)
@@ -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;