drm_atomic_helper_prepare_planes
ret = drm_atomic_helper_prepare_planes(dev, state);
ret = drm_atomic_helper_prepare_planes(dev, state);
EXPORT_SYMBOL(drm_atomic_helper_prepare_planes);
ret = drm_atomic_helper_prepare_planes(state->base.dev, &state->base);
ret = drm_atomic_helper_prepare_planes(dev, state);
int drm_atomic_helper_prepare_planes(struct drm_device *dev,