1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * Line 6 Linux USB driver 2 * Line 6 Linux USB driver
4 * 3 *
5 * Copyright (C) 2004-2010 Markus Grabner (lin !! 4 * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
>> 5 *
>> 6 * This program is free software; you can redistribute it and/or
>> 7 * modify it under the terms of the GNU General Public License as
>> 8 * published by the Free Software Foundation, version 2.
>> 9 *
6 */ 10 */
7 11
8 #ifndef MIDI_H 12 #ifndef MIDI_H
9 #define MIDI_H 13 #define MIDI_H
10 14
11 #include <sound/rawmidi.h> 15 #include <sound/rawmidi.h>
12 16
13 #include "midibuf.h" 17 #include "midibuf.h"
14 18
15 #define MIDI_BUFFER_SIZE 1024 19 #define MIDI_BUFFER_SIZE 1024
16 20
17 struct snd_line6_midi { 21 struct snd_line6_midi {
18 /* Pointer back to the Line 6 driver d 22 /* Pointer back to the Line 6 driver data structure */
19 struct usb_line6 *line6; 23 struct usb_line6 *line6;
20 24
21 /* MIDI substream for receiving (or NU 25 /* MIDI substream for receiving (or NULL if not active) */
22 struct snd_rawmidi_substream *substrea 26 struct snd_rawmidi_substream *substream_receive;
23 27
24 /* MIDI substream for transmitting (or 28 /* MIDI substream for transmitting (or NULL if not active) */
25 struct snd_rawmidi_substream *substrea 29 struct snd_rawmidi_substream *substream_transmit;
26 30
27 /* Number of currently active MIDI sen 31 /* Number of currently active MIDI send URBs */
28 int num_active_send_urbs; 32 int num_active_send_urbs;
29 33
30 /* Spin lock to protect MIDI buffer ha 34 /* Spin lock to protect MIDI buffer handling */
31 spinlock_t lock; 35 spinlock_t lock;
32 36
33 /* Wait queue for MIDI transmission */ 37 /* Wait queue for MIDI transmission */
34 wait_queue_head_t send_wait; 38 wait_queue_head_t send_wait;
35 39
36 /* Buffer for incoming MIDI stream */ 40 /* Buffer for incoming MIDI stream */
37 struct midi_buffer midibuf_in; 41 struct midi_buffer midibuf_in;
38 42
39 /* Buffer for outgoing MIDI stream */ 43 /* Buffer for outgoing MIDI stream */
40 struct midi_buffer midibuf_out; 44 struct midi_buffer midibuf_out;
41 }; 45 };
42 46
43 extern int line6_init_midi(struct usb_line6 *l 47 extern int line6_init_midi(struct usb_line6 *line6);
44 extern void line6_midi_receive(struct usb_line 48 extern void line6_midi_receive(struct usb_line6 *line6, unsigned char *data,
45 int length); 49 int length);
46 50
47 #endif 51 #endif
48 52
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.