xref: /openbmc/linux/sound/usb/6fire/midi.h (revision 2874c5fd)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Linux driver for TerraTec DMX 6Fire USB
4  *
5  * Author:	Torsten Schenk <torsten.schenk@zoho.com>
6  * Created:	Jan 01, 2011
7  * Copyright:	(C) Torsten Schenk
8  */
9 
10 #ifndef USB6FIRE_MIDI_H
11 #define USB6FIRE_MIDI_H
12 
13 #include "common.h"
14 
15 struct midi_runtime {
16 	struct sfire_chip *chip;
17 	struct snd_rawmidi *instance;
18 
19 	struct snd_rawmidi_substream *in;
20 	char in_active;
21 
22 	spinlock_t in_lock;
23 	spinlock_t out_lock;
24 	struct snd_rawmidi_substream *out;
25 	struct urb out_urb;
26 	u8 out_serial; /* serial number of out packet */
27 	u8 *out_buffer;
28 	int buffer_offset;
29 
30 	void (*in_received)(struct midi_runtime *rt, u8 *data, int length);
31 };
32 
33 int usb6fire_midi_init(struct sfire_chip *chip);
34 void usb6fire_midi_abort(struct sfire_chip *chip);
35 void usb6fire_midi_destroy(struct sfire_chip *chip);
36 #endif /* USB6FIRE_MIDI_H */
37 
38