1 /*
2  * u_tcm.h
3  *
4  * Utility definitions for the tcm function
5  *
6  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
7  *		http://www.samsung.com
8  *
9  * Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  */
15 
16 #ifndef U_TCM_H
17 #define U_TCM_H
18 
19 #include <linux/usb/composite.h>
20 
21 /**
22  * @dependent: optional dependent module. Meant for legacy gadget.
23  * If non-null its refcount will be increased when a tpg is created and
24  * decreased when tpg is dropped.
25  * @dep_lock: lock for dependent module operations.
26  * @ready: true if the dependent module information is set.
27  * @can_attach: true a function can be bound to gadget
28  * @has_dep: true if there is a dependent module
29  *
30  */
31 struct f_tcm_opts {
32 	struct usb_function_instance	func_inst;
33 	struct module			*dependent;
34 	struct mutex			dep_lock;
35 	bool				ready;
36 	bool				can_attach;
37 	bool				has_dep;
38 
39 	/*
40 	 * Callbacks to be removed when legacy tcm gadget disappears.
41 	 *
42 	 * If you use the new function registration interface
43 	 * programmatically, you MUST set these callbacks to
44 	 * something sensible (e.g. probe/remove the composite).
45 	 */
46 	int (*tcm_register_callback)(struct usb_function_instance *);
47 	void (*tcm_unregister_callback)(struct usb_function_instance *);
48 };
49 
50 #endif /* U_TCM_H */
51