diff --git a/gbm.h b/gbm.h
index 094d746..fbb8cbc 100644
--- a/gbm.h
+++ b/gbm.h
@@ -71,7 +71,7 @@
 /** Format of the allocated buffer */
 enum gbm_bo_format {
    /** RGB with 8 bits per channel in a 32 bit value */
-   GBM_BO_FORMAT_XRGB8888, 
+   GBM_BO_FORMAT_XRGB8888,
    /** ARGB with 8 bits per channel in a 32 bit value */
    GBM_BO_FORMAT_ARGB8888
 };
@@ -273,6 +273,24 @@
 int
 gbm_bo_get_fd(struct gbm_bo *bo);
 
+size_t
+gbm_bo_get_num_planes(struct gbm_bo *bo);
+
+union gbm_bo_handle
+gbm_bo_get_plane_handle(struct gbm_bo *bo, size_t plane);
+
+int
+gbm_bo_get_plane_fd(struct gbm_bo *bo, size_t plane);
+
+uint32_t
+gbm_bo_get_plane_offset(struct gbm_bo *bo, size_t plane);
+
+uint32_t
+gbm_bo_get_plane_size(struct gbm_bo *bo, size_t plane);
+
+uint32_t
+gbm_bo_get_plane_stride(struct gbm_bo *bo, size_t plane);
+
 int
 gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);