drivers/usb/gadget/function/u_midi.h

   1 /*
   2  * u_midi.h
   3  *
   4  * Utility definitions for the midi function
   5  *
   6  * Copyright (c) 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_MIDI_H
  17 #define U_MIDI_H
  18
  19 #include <linux/usb/composite.h>
  20
  21 struct f_midi_opts {
  22         struct usb_function_instance    func_inst;
  23         int                             index;
  24         char                            *id;
  25         bool                            id_allocated;
  26         unsigned int                    in_ports;
  27         unsigned int                    out_ports;
  28         unsigned int                    buflen;
  29         unsigned int                    qlen;
  30
  31         /*
  32          * Protect the data form concurrent access by read/write
  33          * and create symlink/remove symlink.
  34          */
  35          struct mutex                   lock;
  36          int                            refcnt;
  37 };
  38
  39 #endif /* U_MIDI_H */
  40