Merge branch 'next' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc...
[linux-2.6] / drivers / staging / line6 / audio.c
1 /*
2  * Line6 Linux USB driver - 0.8.0
3  *
4  * Copyright (C) 2004-2009 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  *
10  */
11
12 #include "driver.h"
13 #include "audio.h"
14
15 #include <sound/core.h>
16 #include <sound/initval.h>
17
18
19 static int line6_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
20 static char *line6_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
21
22
23 /*
24         Initialize the Line6 USB audio system.
25 */
26 int line6_init_audio(struct usb_line6 *line6)
27 {
28         static int dev;
29         struct snd_card *card;
30
31         card = snd_card_new(line6_index[dev], line6_id[dev], THIS_MODULE, 0);
32
33         if (card == NULL)
34                 return -ENOMEM;
35
36         line6->card = card;
37
38         strcpy(card->driver, DRIVER_NAME);
39         strcpy(card->shortname, "Line6-USB");
40         sprintf(card->longname, "Line6 %s at USB %s", line6->properties->name,
41                 dev_name(line6->ifcdev));  /* 80 chars - see asound.h */
42         return 0;
43 }
44
45 /*
46         Register the Line6 USB audio system.
47 */
48 int line6_register_audio(struct usb_line6 *line6)
49 {
50         int err;
51
52         err = snd_card_register(line6->card);
53         if (err < 0)
54                 return err;
55
56         return 0;
57 }
58
59 /*
60         Cleanup the Line6 USB audio system.
61 */
62 void line6_cleanup_audio(struct usb_line6 *line6)
63 {
64         struct snd_card *card = line6->card;
65
66         if (card == NULL)
67                 return;
68
69         snd_card_disconnect(card);
70         snd_card_free(card);
71         line6->card = NULL;
72 }