linux/drivers/usb/gadget/function/u_hid.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * u_hid.h
   4 *
   5 * Utility definitions for the hid function
   6 *
   7 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   8 *              http://www.samsung.com
   9 *
  10 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
  11 */
  12
  13#ifndef U_HID_H
  14#define U_HID_H
  15
  16#include <linux/usb/composite.h>
  17
  18struct f_hid_opts {
  19        struct usb_function_instance    func_inst;
  20        int                             minor;
  21        unsigned char                   subclass;
  22        unsigned char                   protocol;
  23        unsigned short                  report_length;
  24        unsigned short                  report_desc_length;
  25        unsigned char                   *report_desc;
  26        bool                            report_desc_alloc;
  27
  28        /*
  29         * Protect the data form concurrent access by read/write
  30         * and create symlink/remove symlink.
  31         */
  32        struct mutex                    lock;
  33        int                             refcnt;
  34};
  35
  36int ghid_setup(struct usb_gadget *g, int count);
  37void ghid_cleanup(void);
  38
  39#endif /* U_HID_H */
  40