drm: export atomic wait_for_vblanks helper (v2)

v1: original
v2: danvet's kerneldoc nitpicks

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index 67e3c4645ae0..64b4e91b93bc 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -34,6 +34,9 @@ int drm_atomic_helper_commit(struct drm_device *dev,
                              struct drm_atomic_state *state,
                              bool async);
 
+void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
+                                        struct drm_atomic_state *old_state);
+
 void drm_atomic_helper_commit_pre_planes(struct drm_device *dev,
                                          struct drm_atomic_state *state);
 void drm_atomic_helper_commit_post_planes(struct drm_device *dev,