diff options
Diffstat (limited to 'include/drm/drm_bridge.h')
| -rw-r--r-- | include/drm/drm_bridge.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 00a95f927e34..70e574fbf034 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -531,6 +531,22 @@ struct drm_bridge_funcs { struct drm_bridge_state *(*atomic_reset)(struct drm_bridge *bridge); /** + * @atomic_create_state: + * + * Allocate a pristine, initialized, state for the bridge + * object and return it. This callback must have no side + * effects: in particular, the returned state must not be + * assigned to the object's state pointer and it must not affect + * the hardware state. + * + * RETURNS: + * + * A new, pristine, bridge state instance or an error pointer + * on failure. + */ + struct drm_bridge_state *(*atomic_create_state)(struct drm_bridge *bridge); + + /** * @detect: * * Check if anything is attached to the bridge output. @@ -1375,7 +1391,8 @@ drm_bridge_get_current_state(struct drm_bridge *bridge) * drm_atomic_private_obj_init(), so we need to make sure we're * working with one before we try to use the lock. */ - if (!bridge->funcs || !bridge->funcs->atomic_reset) + if (!bridge->funcs || + !(bridge->funcs->atomic_reset || bridge->funcs->atomic_create_state)) return NULL; drm_modeset_lock_assert_held(&bridge->base.lock); |