diff --git a/drmdisplaycomposition.h b/drmdisplaycomposition.h
index 2b24231..6c52664 100644
--- a/drmdisplaycomposition.h
+++ b/drmdisplaycomposition.h
@@ -109,6 +109,7 @@
            uint64_t frame_no);
 
   int SetLayers(DrmHwcLayer *layers, size_t num_layers, bool geometry_changed);
+  int AddPlaneComposition(DrmCompositionPlane plane);
   int AddPlaneDisable(DrmPlane *plane);
   int SetDpmsMode(uint32_t dpms_mode);
   int SetDisplayMode(const DrmMode &display_mode);
@@ -116,6 +117,8 @@
   int Plan(SquashState *squash, std::vector<DrmPlane *> *primary_planes,
            std::vector<DrmPlane *> *overlay_planes);
 
+  int FinalizeComposition();
+
   int CreateNextTimelineFence();
   int SignalSquashDone() {
     return IncreaseTimelineToPoint(timeline_squash_done_);