/**
* drm_atomic_get_plane_state - get plane state
* @state: global atomic state object
* @plane: plane to get state object for
*
* This function returns the plane state for the given plane, allocating it if
* needed. It will also grab the relevant plane lock to make sure that the state
* is consistent.
*
* Returns:
*
* Either the allocated state or the error code encoded into the pointer. When
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
* entire atomic sequence must be restarted. All other errors are fatal.
*/
struct drm_plane_state *
drm_atomic_get_plane_state(struct drm_atomic_state *state,
struct drm_plane *plane)
{
int ret, index = drm_plane_index(plane);
struct drm_plane_state *plane_state;
WARN_ON(!state->acquire_ctx);
/* the legacy pointers should never be set */
WARN_ON(plane->fb);
WARN_ON(plane->old_fb);
WARN_ON(plane->crtc);
plane_state = drm_atomic_get_existing_plane_state(state, plane);
if (plane_state)
return plane_state;
ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
plane_state = plane->funcs->atomic_duplicate_state(plane);
if (!plane_state)
return ERR_PTR(-ENOMEM);
state->planes[index].state = plane_state;
state->planes[index].ptr = plane;
state->planes[index].old_state = plane->state;
state->planes[index].new_state = plane_state;
plane_state->state = state;
DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
plane->base.id, plane->name, plane_state, state);
if (plane_state->crtc) {
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state,
plane_state->crtc);
if (IS_ERR(crtc_state))
return ERR_CAST(crtc_state);
}
return plane_state;
}
/**
* drm_atomic_get_plane_state - get plane state
* @state: global atomic state object
* @plane: plane to get state object for
*
* This function returns the plane state for the given plane, allocating it if
* needed. It will also grab the relevant plane lock to make sure that the state
* is consistent.
*
* Returns:
*
* Either the allocated state or the error code encoded into the pointer. When
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
* entire atomic sequence must be restarted. All other errors are fatal.
*/
struct drm_plane_state *
drm_atomic_get_plane_state(struct drm_atomic_state *state,
struct drm_plane *plane)
{
int ret, index = drm_plane_index(plane);
struct drm_plane_state *plane_state;
plane_state = drm_atomic_get_existing_plane_state(state, plane);
if (plane_state)
return plane_state;
ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
plane_state = plane->funcs->atomic_duplicate_state(plane);
if (!plane_state)
return ERR_PTR(-ENOMEM);
state->plane_states[index] = plane_state;
state->planes[index] = plane;
plane_state->state = state;
DRM_DEBUG_ATOMIC("Added [PLANE:%d] %p state to %p\n",
plane->base.id, plane_state, state);
if (plane_state->crtc) {
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state,
plane_state->crtc);
if (IS_ERR(crtc_state))
return ERR_CAST(crtc_state);
}
return plane_state;
}
