Messages in this thread Patch in this message | | | From | Thierry Reding <> | Subject | [PATCH 05/36] drm/atomic: Add drm_atomic_plane_get_crtc_state() | Date | Tue, 20 Jan 2015 11:48:24 +0100 |
| |
From: Thierry Reding <treding@nvidia.com>
This function is useful to obtain the state of the CRTC that a plane is being attached to.
Signed-off-by: Thierry Reding <treding@nvidia.com> --- include/drm/drm_atomic.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 51168a8b723a..ddca107e5cce 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -75,4 +75,25 @@ int __must_check drm_atomic_check_only(struct drm_atomic_state *state); int __must_check drm_atomic_commit(struct drm_atomic_state *state); int __must_check drm_atomic_async_commit(struct drm_atomic_state *state); +/** + * drm_atomic_plane_get_crtc_state - obtain atomic state of the CRTC that a + * plane is being attached to + * @state: atomic state of plane + * + * Getting the atomic state of the CRTC that a given plane being attached to + * is non-trivial. We need to look at the global atomic state that the plane + * state is part of and extract the CRTC state using the CRTC's index. Using + * the drm_atomic_get_crtc_state() helper we make sure to acquire the proper + * locks, too. + * + * RETURNS: + * The atomic state of the CRTC that the plane is being attached to, or an + * ERR_PTR()-encoded negative error code on failure. + */ +static inline struct drm_crtc_state * +drm_atomic_plane_get_crtc_state(struct drm_plane_state *state) +{ + return drm_atomic_get_crtc_state(state->state, state->crtc); +} + #endif /* DRM_ATOMIC_H_ */ -- 2.1.3
| |