// SPDX-License-Identifier: GPL-2.0 /* * u_tcm.h * * Utility definitions for the tcm function * * Copyright (c) 2015 Samsung Electronics Co., Ltd. * http://www.samsung.com * * Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> */ #ifndef U_TCM_H #define U_TCM_H #include <linux/usb/composite.h> /** * @dependent: optional dependent module. Meant for legacy gadget. * If non-null its refcount will be increased when a tpg is created and * decreased when tpg is dropped. * @dep_lock: lock for dependent module operations. * @ready: true if the dependent module information is set. * @can_attach: true a function can be bound to gadget * @has_dep: true if there is a dependent module * */ struct f_tcm_opts { struct usb_function_instance func_inst; struct module *dependent; struct mutex dep_lock; bool ready; bool can_attach; bool has_dep; /* * Callbacks to be removed when legacy tcm gadget disappears. * * If you use the new function registration interface * programmatically, you MUST set these callbacks to * something sensible (e.g. probe/remove the composite). */ int (*tcm_register_callback)(struct usb_function_instance *); void (*tcm_unregister_callback)(struct usb_function_instance *); }; #endif /* U_TCM_H */