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1 | /* |
2 | * u_uvc.h | |
3 | * | |
4 | * Utility definitions for the uvc function | |
5 | * | |
6 | * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd. | |
7 | * http://www.samsung.com | |
8 | * | |
9 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
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_UVC_H | |
17 | #define U_UVC_H | |
18 | ||
19 | #include <linux/usb/composite.h> | |
46919a23 | 20 | #include <linux/usb/video.h> |
6d11ed76 | 21 | |
bbea6de1 | 22 | #define fi_to_f_uvc_opts(f) container_of(f, struct f_uvc_opts, func_inst) |
6d11ed76 AP |
23 | |
24 | struct f_uvc_opts { | |
25 | struct usb_function_instance func_inst; | |
26 | unsigned int uvc_gadget_trace_param; | |
27 | unsigned int streaming_interval; | |
28 | unsigned int streaming_maxpacket; | |
29 | unsigned int streaming_maxburst; | |
46919a23 AP |
30 | |
31 | /* | |
32 | * Control descriptors array pointers for full-/high-speed and | |
33 | * super-speed. They point by default to the uvc_fs_control_cls and | |
34 | * uvc_ss_control_cls arrays respectively. Legacy gadgets must | |
35 | * override them in their gadget bind callback. | |
36 | */ | |
6d11ed76 AP |
37 | const struct uvc_descriptor_header * const *fs_control; |
38 | const struct uvc_descriptor_header * const *ss_control; | |
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39 | |
40 | /* | |
41 | * Streaming descriptors array pointers for full-speed, high-speed and | |
42 | * super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays | |
43 | * for configfs-based gadgets. Legacy gadgets must initialize them in | |
44 | * their gadget bind callback. | |
45 | */ | |
6d11ed76 AP |
46 | const struct uvc_descriptor_header * const *fs_streaming; |
47 | const struct uvc_descriptor_header * const *hs_streaming; | |
48 | const struct uvc_descriptor_header * const *ss_streaming; | |
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49 | |
50 | /* Default control descriptors for configfs-based gadgets. */ | |
51 | struct uvc_camera_terminal_descriptor uvc_camera_terminal; | |
52 | struct uvc_processing_unit_descriptor uvc_processing; | |
53 | struct uvc_output_terminal_descriptor uvc_output_terminal; | |
54 | struct uvc_color_matching_descriptor uvc_color_matching; | |
55 | ||
56 | /* | |
57 | * Control descriptors pointers arrays for full-/high-speed and | |
58 | * super-speed. The first element is a configurable control header | |
59 | * descriptor, the other elements point to the fixed default control | |
60 | * descriptors. Used by configfs only, must not be touched by legacy | |
61 | * gadgets. | |
62 | */ | |
63 | struct uvc_descriptor_header *uvc_fs_control_cls[5]; | |
64 | struct uvc_descriptor_header *uvc_ss_control_cls[5]; | |
65 | ||
66 | /* | |
67 | * Streaming descriptors for full-speed, high-speed and super-speed. | |
68 | * Used by configfs only, must not be touched by legacy gadgets. The | |
69 | * arrays are allocated at runtime as the number of descriptors isn't | |
70 | * known in advance. | |
71 | */ | |
72 | struct uvc_descriptor_header **uvc_fs_streaming_cls; | |
73 | struct uvc_descriptor_header **uvc_hs_streaming_cls; | |
74 | struct uvc_descriptor_header **uvc_ss_streaming_cls; | |
75 | ||
76 | /* | |
77 | * Read/write access to configfs attributes is handled by configfs. | |
78 | * | |
79 | * This lock protects the descriptors from concurrent access by | |
80 | * read/write and symlink creation/removal. | |
81 | */ | |
82 | struct mutex lock; | |
83 | int refcnt; | |
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84 | }; |
85 | ||
86 | void uvc_set_trace_param(unsigned int trace); | |
87 | ||
88 | #endif /* U_UVC_H */ | |
89 |