xref: /openbmc/linux/sound/usb/6fire/midi.h (revision 1ab142d4)
1 /*
2  * Linux driver for TerraTec DMX 6Fire USB
3  *
4  * Author:	Torsten Schenk <torsten.schenk@zoho.com>
5  * Created:	Jan 01, 2011
6  * Version:	0.3.0
7  * Copyright:	(C) Torsten Schenk
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  */
14 
15 #ifndef USB6FIRE_MIDI_H
16 #define USB6FIRE_MIDI_H
17 
18 #include "common.h"
19 
20 enum {
21 	MIDI_BUFSIZE = 64
22 };
23 
24 struct midi_runtime {
25 	struct sfire_chip *chip;
26 	struct snd_rawmidi *instance;
27 
28 	struct snd_rawmidi_substream *in;
29 	char in_active;
30 
31 	spinlock_t in_lock;
32 	spinlock_t out_lock;
33 	struct snd_rawmidi_substream *out;
34 	struct urb out_urb;
35 	u8 out_serial; /* serial number of out packet */
36 	u8 out_buffer[MIDI_BUFSIZE];
37 	int buffer_offset;
38 
39 	void (*in_received)(struct midi_runtime *rt, u8 *data, int length);
40 };
41 
42 int __devinit usb6fire_midi_init(struct sfire_chip *chip);
43 void usb6fire_midi_abort(struct sfire_chip *chip);
44 void usb6fire_midi_destroy(struct sfire_chip *chip);
45 #endif /* USB6FIRE_MIDI_H */
46 
47