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-rw-r--r--drivers/gpu/drm/i915/intel_dp.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f7410cffa8c9..2b99ab23dc8a 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1374,8 +1374,22 @@ static int intel_dp_get_modes(struct drm_connector *connector)
*/
ret = intel_ddc_get_modes(connector, intel_encoder->ddc_bus);
- if (ret)
+ if (ret) {
+ if ((IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) &&
+ !dev_priv->panel_fixed_mode) {
+ struct drm_display_mode *newmode;
+ list_for_each_entry(newmode, &connector->probed_modes,
+ head) {
+ if (newmode->type & DRM_MODE_TYPE_PREFERRED) {
+ dev_priv->panel_fixed_mode =
+ drm_mode_duplicate(dev, newmode);
+ break;
+ }
+ }
+ }
+
return ret;
+ }
/* if eDP has no EDID, try to use fixed panel mode from VBT */
if (IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) {