Op 13-07-15 om 02:21 schreef John Hunter: > From: Zhao Junwang <zhjwpku at gmail.com> > > Cc: Daniel Vetter <daniel.vetter at ffwll.ch> > Signed-off-by: Zhao Junwang <zhjwpku at gmail.com> > --- > drivers/gpu/drm/drm_atomic_helper.c | 55 > +++++++++++++++++++++++++++++++++++ > include/drm/drm_atomic_helper.h | 7 +++++ > 2 files changed, 62 insertions(+) > > diff --git a/drivers/gpu/drm/drm_atomic_helper.c > b/drivers/gpu/drm/drm_atomic_helper.c > index 536ae4d..3d94ff8 100644 > --- a/drivers/gpu/drm/drm_atomic_helper.c > +++ b/drivers/gpu/drm/drm_atomic_helper.c > @@ -1336,6 +1336,61 @@ void drm_atomic_helper_swap_state(struct drm_device > *dev, > EXPORT_SYMBOL(drm_atomic_helper_swap_state); > > /** > + * drm_atomic_helper_plane_check_update > + * @plane: plane object to update == plane_state->plane, so can be removed > + * @state: drm plane state rename to plane_state > + * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point > + * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point > + * @can_position: is it legal to position the plane such that it > + * doesn't cover the entire crtc? This will generally > + * only be false for primary planes. > + * @can_update_disabled: can the plane be updated while the crtc > + * is disabled? > + * If you look carefully at drm_plane_helper_check_update, can_update_disabled will be a noop, so remove this parameter.
plane_state->crtc != NULL iff plane_state->fb != NULL
