1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 3a7251ad9a73..d2e8c9f4d6d5 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -140,6 +140,11 @@ struct intel_sdvo {
 
         /* DDC bus used by this SDVO encoder */
         uint8_t ddc_bus;
+
+        /*
+         * the sdvo flag gets lost in round trip: dtd->adjusted_mode->dtd
+         */
+        uint8_t dtd_sdvo_flags;
 };
 
 struct intel_sdvo_connector {
@@ -985,6 +990,7 @@ intel_sdvo_get_preferred_input_mode(struct intel_sdvo *intel_sdvo,
                 return false;
 
         intel_sdvo_get_mode_from_dtd(adjusted_mode, &input_dtd);
+        intel_sdvo->dtd_sdvo_flags = input_dtd.part2.sdvo_flags;
 
         return true;
 }
@@ -1093,6 +1099,8 @@ static void intel_sdvo_mode_set(struct drm_encoder *encoder,
          * adjusted_mode.
          */
         intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode);
+        if (intel_sdvo->is_tv || intel_sdvo->is_lvds)
+                input_dtd.part2.sdvo_flags = intel_sdvo->dtd_sdvo_flags;
         if (!intel_sdvo_set_input_timing(intel_sdvo, &input_dtd))
                 DRM_INFO("Setting input timings on %s failed\n",
                          SDVO_NAME(intel_sdvo));