2 * u_audio.h -- interface to USB gadget "ALSA AUDIO" utilities
4 * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
5 * Copyright (C) 2008 Analog Devices, Inc
7 * Enter bugs at http://blackfin.uclinux.org/
9 * Licensed under the GPL-2 or later.
15 #include <linux/device.h>
16 #include <linux/err.h>
17 #include <linux/usb/audio.h>
18 #include <linux/usb/composite.h>
20 #include <sound/core.h>
21 #include <sound/pcm.h>
22 #include <sound/pcm_params.h>
24 #include "gadget_chips.h"
27 * This represents the USB side of an audio card device, managed by a USB
28 * function which provides control and stream interfaces.
31 struct gaudio_snd_dev {
34 struct snd_pcm_substream *substream;
42 struct usb_function func;
43 struct usb_gadget *gadget;
45 /* ALSA sound device interfaces */
46 struct gaudio_snd_dev control;
47 struct gaudio_snd_dev playback;
48 struct gaudio_snd_dev capture;
53 int gaudio_setup(struct gaudio *card);
54 void gaudio_cleanup(void);
56 #endif /* __U_AUDIO_H */