/**
* drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes
* @plane: drm plane
*
* Resets the atomic state for @plane by freeing the state pointer (which might
* be NULL, e.g. at driver load time) and allocating a new empty state object.
*/
void drm_atomic_helper_plane_reset(struct drm_plane *plane)
{
if (plane->state)
__drm_atomic_helper_plane_destroy_state(plane->state);
kfree(plane->state);
plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL);
if (plane->state)
__drm_atomic_helper_plane_reset(plane, plane->state);
}
static void mtk_plane_reset(struct drm_plane *plane)
{
struct mtk_plane_state *state;
if (plane->state) {
__drm_atomic_helper_plane_destroy_state(plane->state);
state = to_mtk_plane_state(plane->state);
memset(state, 0, sizeof(*state));
} else {
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return;
plane->state = &state->base;
}
state->base.plane = plane;
state->pending.format = DRM_FORMAT_RGB565;
}
static void vkms_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state);
struct drm_crtc *crtc = vkms_state->base.crtc;
if (crtc) {
/* dropping the reference we acquired in
* vkms_primary_plane_update()
*/
if (drm_framebuffer_read_refcount(&vkms_state->crc_data->fb))
drm_framebuffer_put(&vkms_state->crc_data->fb);
}
kfree(vkms_state->crc_data);
vkms_state->crc_data = NULL;
__drm_atomic_helper_plane_destroy_state(old_state);
kfree(vkms_state);
}
static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
__drm_atomic_helper_plane_destroy_state(state);
kfree(to_mtk_plane_state(state));
}
/**
* drm_atomic_helper_plane_destroy_state - default state destroy hook
* @plane: drm plane
* @state: plane state object to release
*
* Default plane state destroy hook for drivers which don't have their own
* subclassed plane state structure.
*/
void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
__drm_atomic_helper_plane_destroy_state(state);
kfree(state);
}
