| Andrzej Pietrasiewicz | 6d11ed7 | 2014-09-09 02:02:10 +0300 | [diff] [blame] | 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> |
| Andrzej Pietrasiewicz | 46919a2 | 2014-12-10 12:34:02 +0100 | [diff] [blame^] | 20 | #include <linux/usb/video.h> |
| Andrzej Pietrasiewicz | 6d11ed7 | 2014-09-09 02:02:10 +0300 | [diff] [blame] | 21 | |
| Andrzej Pietrasiewicz | bbea6de1 | 2014-12-10 12:34:00 +0100 | [diff] [blame] | 22 | #define fi_to_f_uvc_opts(f) container_of(f, struct f_uvc_opts, func_inst) |
| Andrzej Pietrasiewicz | 6d11ed7 | 2014-09-09 02:02:10 +0300 | [diff] [blame] | 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; |
| Andrzej Pietrasiewicz | 46919a2 | 2014-12-10 12:34:02 +0100 | [diff] [blame^] | 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 | */ |
| Andrzej Pietrasiewicz | 6d11ed7 | 2014-09-09 02:02:10 +0300 | [diff] [blame] | 37 | const struct uvc_descriptor_header * const *fs_control; |
| 38 | const struct uvc_descriptor_header * const *ss_control; |
| Andrzej Pietrasiewicz | 46919a2 | 2014-12-10 12:34:02 +0100 | [diff] [blame^] | 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 | */ |
| Andrzej Pietrasiewicz | 6d11ed7 | 2014-09-09 02:02:10 +0300 | [diff] [blame] | 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; |
| Andrzej Pietrasiewicz | 46919a2 | 2014-12-10 12:34:02 +0100 | [diff] [blame^] | 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; |
| Andrzej Pietrasiewicz | 6d11ed7 | 2014-09-09 02:02:10 +0300 | [diff] [blame] | 84 | }; |
| 85 | |
| 86 | void uvc_set_trace_param(unsigned int trace); |
| 87 | |
| 88 | #endif /* U_UVC_H */ |
| 89 | |