cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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u_uvc.h (2915B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * u_uvc.h
      4 *
      5 * Utility definitions for the uvc function
      6 *
      7 * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd.
      8 *		http://www.samsung.com
      9 *
     10 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
     11 */
     12
     13#ifndef U_UVC_H
     14#define U_UVC_H
     15
     16#include <linux/mutex.h>
     17#include <linux/usb/composite.h>
     18#include <linux/usb/video.h>
     19
     20#define fi_to_f_uvc_opts(f)	container_of(f, struct f_uvc_opts, func_inst)
     21
     22struct f_uvc_opts {
     23	struct usb_function_instance			func_inst;
     24	unsigned int					streaming_interval;
     25	unsigned int					streaming_maxpacket;
     26	unsigned int					streaming_maxburst;
     27
     28	unsigned int					control_interface;
     29	unsigned int					streaming_interface;
     30	char						function_name[32];
     31
     32	/*
     33	 * Control descriptors array pointers for full-/high-speed and
     34	 * super-speed. They point by default to the uvc_fs_control_cls and
     35	 * uvc_ss_control_cls arrays respectively. Legacy gadgets must
     36	 * override them in their gadget bind callback.
     37	 */
     38	const struct uvc_descriptor_header * const	*fs_control;
     39	const struct uvc_descriptor_header * const	*ss_control;
     40
     41	/*
     42	 * Streaming descriptors array pointers for full-speed, high-speed and
     43	 * super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays
     44	 * for configfs-based gadgets. Legacy gadgets must initialize them in
     45	 * their gadget bind callback.
     46	 */
     47	const struct uvc_descriptor_header * const	*fs_streaming;
     48	const struct uvc_descriptor_header * const	*hs_streaming;
     49	const struct uvc_descriptor_header * const	*ss_streaming;
     50
     51	/* Default control descriptors for configfs-based gadgets. */
     52	struct uvc_camera_terminal_descriptor		uvc_camera_terminal;
     53	struct uvc_processing_unit_descriptor		uvc_processing;
     54	struct uvc_output_terminal_descriptor		uvc_output_terminal;
     55	struct uvc_color_matching_descriptor		uvc_color_matching;
     56
     57	/*
     58	 * Control descriptors pointers arrays for full-/high-speed and
     59	 * super-speed. The first element is a configurable control header
     60	 * descriptor, the other elements point to the fixed default control
     61	 * descriptors. Used by configfs only, must not be touched by legacy
     62	 * gadgets.
     63	 */
     64	struct uvc_descriptor_header			*uvc_fs_control_cls[5];
     65	struct uvc_descriptor_header			*uvc_ss_control_cls[5];
     66
     67	/*
     68	 * Streaming descriptors for full-speed, high-speed and super-speed.
     69	 * Used by configfs only, must not be touched by legacy gadgets. The
     70	 * arrays are allocated at runtime as the number of descriptors isn't
     71	 * known in advance.
     72	 */
     73	struct uvc_descriptor_header			**uvc_fs_streaming_cls;
     74	struct uvc_descriptor_header			**uvc_hs_streaming_cls;
     75	struct uvc_descriptor_header			**uvc_ss_streaming_cls;
     76
     77	/*
     78	 * Read/write access to configfs attributes is handled by configfs.
     79	 *
     80	 * This lock protects the descriptors from concurrent access by
     81	 * read/write and symlink creation/removal.
     82	 */
     83	struct mutex			lock;
     84	int				refcnt;
     85};
     86
     87#endif /* U_UVC_H */