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dc8c46a5 AP |
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 */ |