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path: root/drivers/gpu/drm/drm_plane.c
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Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
-rw-r--r--drivers/gpu/drm/drm_plane.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index c17c9c2a342e..cd0d475bf3c3 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -45,6 +45,9 @@
* &drm_plane_type for a more in-depth discussion of these special uapi-relevant
* plane types. Special planes are associated with their CRTC by calling
* drm_crtc_init_with_planes().
+ *
+ * The type of a plane is exposed in the immutable "type" enumeration property,
+ * which has one of the following values: "Overlay", "Primary", "Cursor".
*/
static unsigned int drm_num_planes(struct drm_device *dev)