162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * u_tcm.h 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Utility definitions for the tcm function 662306a36Sopenharmony_ci * 762306a36Sopenharmony_ci * Copyright (c) 2015 Samsung Electronics Co., Ltd. 862306a36Sopenharmony_ci * http://www.samsung.com 962306a36Sopenharmony_ci * 1062306a36Sopenharmony_ci * Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> 1162306a36Sopenharmony_ci */ 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#ifndef U_TCM_H 1462306a36Sopenharmony_ci#define U_TCM_H 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci#include <linux/usb/composite.h> 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci/** 1962306a36Sopenharmony_ci * @dependent: optional dependent module. Meant for legacy gadget. 2062306a36Sopenharmony_ci * If non-null its refcount will be increased when a tpg is created and 2162306a36Sopenharmony_ci * decreased when tpg is dropped. 2262306a36Sopenharmony_ci * @dep_lock: lock for dependent module operations. 2362306a36Sopenharmony_ci * @ready: true if the dependent module information is set. 2462306a36Sopenharmony_ci * @can_attach: true a function can be bound to gadget 2562306a36Sopenharmony_ci * @has_dep: true if there is a dependent module 2662306a36Sopenharmony_ci * 2762306a36Sopenharmony_ci */ 2862306a36Sopenharmony_cistruct f_tcm_opts { 2962306a36Sopenharmony_ci struct usb_function_instance func_inst; 3062306a36Sopenharmony_ci struct module *dependent; 3162306a36Sopenharmony_ci struct mutex dep_lock; 3262306a36Sopenharmony_ci bool ready; 3362306a36Sopenharmony_ci bool can_attach; 3462306a36Sopenharmony_ci bool has_dep; 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ci /* 3762306a36Sopenharmony_ci * Callbacks to be removed when legacy tcm gadget disappears. 3862306a36Sopenharmony_ci * 3962306a36Sopenharmony_ci * If you use the new function registration interface 4062306a36Sopenharmony_ci * programmatically, you MUST set these callbacks to 4162306a36Sopenharmony_ci * something sensible (e.g. probe/remove the composite). 4262306a36Sopenharmony_ci */ 4362306a36Sopenharmony_ci int (*tcm_register_callback)(struct usb_function_instance *); 4462306a36Sopenharmony_ci void (*tcm_unregister_callback)(struct usb_function_instance *); 4562306a36Sopenharmony_ci}; 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ci#endif /* U_TCM_H */ 48