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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid...
[karo-tx-linux.git] / drivers / staging / line6 / audio.c
1 /*
2  * Line6 Linux USB driver - 0.9.1beta
3  *
4  * Copyright (C) 2004-2010 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 <sound/core.h>
13 #include <sound/initval.h>
14 #include <linux/export.h>
15
16 #include "driver.h"
17 #include "audio.h"
18
19 /*
20         Initialize the Line6 USB audio system.
21 */
22 int line6_init_audio(struct usb_line6 *line6)
23 {
24         struct snd_card *card;
25         int err;
26
27         err = snd_card_new(line6->ifcdev,
28                            SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
29                            THIS_MODULE, 0, &card);
30         if (err < 0)
31                 return err;
32
33         line6->card = card;
34
35         strcpy(card->id, line6->properties->id);
36         strcpy(card->driver, DRIVER_NAME);
37         strcpy(card->shortname, line6->properties->name);
38         /* longname is 80 chars - see asound.h */
39         sprintf(card->longname, "Line6 %s at USB %s", line6->properties->name,
40                 dev_name(line6->ifcdev));
41         return 0;
42 }
43
44 /*
45         Register the Line6 USB audio system.
46 */
47 int line6_register_audio(struct usb_line6 *line6)
48 {
49         int err;
50
51         err = snd_card_register(line6->card);
52         if (err < 0)
53                 return err;
54
55         return 0;
56 }
57
58 /*
59         Cleanup the Line6 USB audio system.
60 */
61 void line6_cleanup_audio(struct usb_line6 *line6)
62 {
63         struct snd_card *card = line6->card;
64
65         if (card == NULL)
66                 return;
67
68         snd_card_disconnect(card);
69         snd_card_free(card);
70         line6->card = NULL;
71 }