cregit-Linux how code gets into the kernel

Release 4.11 drivers/usb/gadget/function/u_uvc.h

/*
 * u_uvc.h
 *
 * Utility definitions for the uvc function
 *
 * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd.
 *              http://www.samsung.com
 *
 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef U_UVC_H

#define U_UVC_H

#include <linux/usb/composite.h>
#include <linux/usb/video.h>


#define fi_to_f_uvc_opts(f)	container_of(f, struct f_uvc_opts, func_inst)


struct f_uvc_opts {
	
struct usb_function_instance			func_inst;
	
unsigned int					uvc_gadget_trace_param;
	
unsigned int					streaming_interval;
	
unsigned int					streaming_maxpacket;
	
unsigned int					streaming_maxburst;

	/*
         * Control descriptors array pointers for full-/high-speed and
         * super-speed. They point by default to the uvc_fs_control_cls and
         * uvc_ss_control_cls arrays respectively. Legacy gadgets must
         * override them in their gadget bind callback.
         */
	
const struct uvc_descriptor_header * const	*fs_control;
	
const struct uvc_descriptor_header * const	*ss_control;

	/*
         * Streaming descriptors array pointers for full-speed, high-speed and
         * super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays
         * for configfs-based gadgets. Legacy gadgets must initialize them in
         * their gadget bind callback.
         */
	
const struct uvc_descriptor_header * const	*fs_streaming;
	
const struct uvc_descriptor_header * const	*hs_streaming;
	
const struct uvc_descriptor_header * const	*ss_streaming;

	/* Default control descriptors for configfs-based gadgets. */
	
struct uvc_camera_terminal_descriptor		uvc_camera_terminal;
	
struct uvc_processing_unit_descriptor		uvc_processing;
	
struct uvc_output_terminal_descriptor		uvc_output_terminal;
	
struct uvc_color_matching_descriptor		uvc_color_matching;

	/*
         * Control descriptors pointers arrays for full-/high-speed and
         * super-speed. The first element is a configurable control header
         * descriptor, the other elements point to the fixed default control
         * descriptors. Used by configfs only, must not be touched by legacy
         * gadgets.
         */
	
struct uvc_descriptor_header			*uvc_fs_control_cls[5];
	
struct uvc_descriptor_header			*uvc_ss_control_cls[5];

	/*
         * Streaming descriptors for full-speed, high-speed and super-speed.
         * Used by configfs only, must not be touched by legacy gadgets. The
         * arrays are allocated at runtime as the number of descriptors isn't
         * known in advance.
         */
	
struct uvc_descriptor_header			**uvc_fs_streaming_cls;
	
struct uvc_descriptor_header			**uvc_hs_streaming_cls;
	
struct uvc_descriptor_header			**uvc_ss_streaming_cls;

	/*
         * Read/write access to configfs attributes is handled by configfs.
         *
         * This lock protects the descriptors from concurrent access by
         * read/write and symlink creation/removal.
         */
	
struct mutex			lock;
	
int				refcnt;
};

void uvc_set_trace_param(unsigned int trace);

#endif /* U_UVC_H */


Overall Contributors

PersonTokensPropCommitsCommitProp
Andrzej Pietrasiewicz159100.00%3100.00%
Total159100.00%3100.00%
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