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Merge branches 'sh/wdt', 'sh/pci-express-async' and 'common/serial-rework' into sh...
[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
15 #include "driver.h"
16 #include "audio.h"
17
18 static int line6_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
19 static char *line6_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
20
21 /*
22         Initialize the Line6 USB audio system.
23 */
24 int line6_init_audio(struct usb_line6 *line6)
25 {
26         static int dev;
27         struct snd_card *card;
28         int err;
29
30         err = snd_card_create(line6_index[dev], line6_id[dev], THIS_MODULE, 0,
31                               &card);
32         if (err < 0)
33                 return err;
34
35         line6->card = card;
36
37         strcpy(card->id, line6->properties->id);
38         strcpy(card->driver, DRIVER_NAME);
39         strcpy(card->shortname, line6->properties->name);
40         /* longname is 80 chars - see asound.h */
41         sprintf(card->longname, "Line6 %s at USB %s", line6->properties->name,
42                 dev_name(line6->ifcdev));
43         return 0;
44 }
45
46 /*
47         Register the Line6 USB audio system.
48 */
49 int line6_register_audio(struct usb_line6 *line6)
50 {
51         int err;
52
53         err = snd_card_register(line6->card);
54         if (err < 0)
55                 return err;
56
57         return 0;
58 }
59
60 /*
61         Cleanup the Line6 USB audio system.
62 */
63 void line6_cleanup_audio(struct usb_line6 *line6)
64 {
65         struct snd_card *card = line6->card;
66
67         if (card == NULL)
68                 return;
69
70         snd_card_disconnect(card);
71         snd_card_free(card);
72         line6->card = NULL;
73 }