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86 lines
2.8 KiB
86 lines
2.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* u_uvc.h |
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* |
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* Utility definitions for the uvc function |
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* |
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* Copyright (c) 2013-2014 Samsung Electronics Co., Ltd. |
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* http://www.samsung.com |
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* |
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* Author: Andrzej Pietrasiewicz <[email protected]> |
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*/ |
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#ifndef U_UVC_H |
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#define U_UVC_H |
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#include <linux/mutex.h> |
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#include <linux/usb/composite.h> |
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#include <linux/usb/video.h> |
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#define fi_to_f_uvc_opts(f) container_of(f, struct f_uvc_opts, func_inst) |
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struct f_uvc_opts { |
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struct usb_function_instance func_inst; |
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unsigned int streaming_interval; |
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unsigned int streaming_maxpacket; |
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unsigned int streaming_maxburst; |
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unsigned int control_interface; |
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unsigned int streaming_interface; |
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/* |
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* Control descriptors array pointers for full-/high-speed and |
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* super-speed. They point by default to the uvc_fs_control_cls and |
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* uvc_ss_control_cls arrays respectively. Legacy gadgets must |
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* override them in their gadget bind callback. |
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*/ |
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const struct uvc_descriptor_header * const *fs_control; |
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const struct uvc_descriptor_header * const *ss_control; |
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/* |
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* Streaming descriptors array pointers for full-speed, high-speed and |
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* super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays |
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* for configfs-based gadgets. Legacy gadgets must initialize them in |
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* their gadget bind callback. |
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*/ |
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const struct uvc_descriptor_header * const *fs_streaming; |
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const struct uvc_descriptor_header * const *hs_streaming; |
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const struct uvc_descriptor_header * const *ss_streaming; |
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/* Default control descriptors for configfs-based gadgets. */ |
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struct uvc_camera_terminal_descriptor uvc_camera_terminal; |
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struct uvc_processing_unit_descriptor uvc_processing; |
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struct uvc_output_terminal_descriptor uvc_output_terminal; |
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struct uvc_color_matching_descriptor uvc_color_matching; |
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/* |
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* Control descriptors pointers arrays for full-/high-speed and |
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* super-speed. The first element is a configurable control header |
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* descriptor, the other elements point to the fixed default control |
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* descriptors. Used by configfs only, must not be touched by legacy |
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* gadgets. |
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*/ |
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struct uvc_descriptor_header *uvc_fs_control_cls[5]; |
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struct uvc_descriptor_header *uvc_ss_control_cls[5]; |
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/* |
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* Streaming descriptors for full-speed, high-speed and super-speed. |
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* Used by configfs only, must not be touched by legacy gadgets. The |
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* arrays are allocated at runtime as the number of descriptors isn't |
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* known in advance. |
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*/ |
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struct uvc_descriptor_header **uvc_fs_streaming_cls; |
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struct uvc_descriptor_header **uvc_hs_streaming_cls; |
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struct uvc_descriptor_header **uvc_ss_streaming_cls; |
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/* |
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* Read/write access to configfs attributes is handled by configfs. |
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* |
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* This lock protects the descriptors from concurrent access by |
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* read/write and symlink creation/removal. |
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*/ |
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struct mutex lock; |
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int refcnt; |
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}; |
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#endif /* U_UVC_H */
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