C++ (Cpp) __drm_atomic_helper_plane_reset Examples

Example #1

File: drm_atomic_state_helper.c Project: avagin/linux

/**
 * 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);
}

Example #2

File: intel_atomic_plane.c Project: Anjali05/linux

struct intel_plane *intel_plane_alloc(void)
{
	struct intel_plane_state *plane_state;
	struct intel_plane *plane;

	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
	if (!plane)
		return ERR_PTR(-ENOMEM);

	plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
	if (!plane_state) {
		kfree(plane);
		return ERR_PTR(-ENOMEM);
	}

	__drm_atomic_helper_plane_reset(&plane->base, &plane_state->base);
	plane_state->scaler_id = -1;

	return plane;
}