diff --git a/drmconnector.h b/drmconnector.h
index 4f7f6a8..9c526c8 100644
--- a/drmconnector.h
+++ b/drmconnector.h
@@ -74,6 +74,10 @@
   uint32_t mm_width() const;
   uint32_t mm_height() const;
 
+  uint32_t get_preferred_mode_id() const {
+    return preferred_mode_id_;
+  }
+
  private:
   DrmDevice *drm_;
 
@@ -97,6 +101,8 @@
   DrmProperty writeback_out_fence_;
 
   std::vector<DrmEncoder *> possible_encoders_;
+
+  uint32_t preferred_mode_id_;
 };
 }  // namespace android