[PATCH] drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary
Alex Deucher
alexdeucher at gmail.com
Wed Feb 11 15:45:27 PST 2015
Don't restrict it to just eDP panels. Some LVDS bridge chips require
this. May fix 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 at amd.com>
Cc: stable at 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 db42a67..5bf825d 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;
--
1.8.3.1
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