aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/usb/gadget/u_uac1.h
blob: 18c2e729faf6fc203da34bf2a3dd78c64f7ea58e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/*
 * u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities
 *
 * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
 * Copyright (C) 2008 Analog Devices, Inc
 *
 * Enter bugs at http://blackfin.uclinux.org/
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef __U_AUDIO_H
#define __U_AUDIO_H

#include <linux/device.h>
#include <linux/err.h>
#include <linux/usb/audio.h>
#include <linux/usb/composite.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>

#include "gadget_chips.h"

/*
 * This represents the USB side of an audio card device, managed by a USB
 * function which provides control and stream interfaces.
 */

struct gaudio_snd_dev {
	struct gaudio			*card;
	struct file			*filp;
	struct snd_pcm_substream	*substream;
	int				access;
	int				format;
	int				channels;
	int				rate;
};

struct gaudio {
	struct usb_function		func;
	struct usb_gadget		*gadget;

	/* ALSA sound device interfaces */
	struct gaudio_snd_dev		control;
	struct gaudio_snd_dev		playback;
	struct gaudio_snd_dev		capture;

	/* TODO */
};

int gaudio_setup(struct gaudio *card);
void gaudio_cleanup(void);

#endif /* __U_AUDIO_H */