blob: b42fdea77ed04a4f36f37d3e0f64ad02f6c20b9d [file] [log] [blame]
Johannes Bergf3d94782006-06-21 15:42:43 +02001/*
2 * Apple Onboard Audio Alsa helpers
3 *
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * GPL v2, can be found in COPYING.
7 */
8#include <linux/module.h>
9#include "snd-aoa-alsa.h"
10
11static int index = -1;
12module_param(index, int, 0444);
13MODULE_PARM_DESC(index, "index for AOA sound card.");
14
15static struct aoa_card *aoa_card;
16
17int aoa_alsa_init(char *name, struct module *mod)
18{
19 struct snd_card *alsa_card;
20 int err;
21
22 if (aoa_card)
23 /* cannot be EEXIST due to usage in aoa_fabric_register */
24 return -EBUSY;
25
26 alsa_card = snd_card_new(index, name, mod, sizeof(struct aoa_card));
27 if (!alsa_card)
28 return -ENOMEM;
29 aoa_card = alsa_card->private_data;
30 aoa_card->alsa_card = alsa_card;
31 strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver));
32 strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname));
33 strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname));
34 strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername));
35 err = snd_card_register(aoa_card->alsa_card);
36 if (err < 0) {
37 printk(KERN_ERR "snd-aoa: couldn't register alsa card\n");
38 snd_card_free(aoa_card->alsa_card);
39 aoa_card = NULL;
40 return err;
41 }
42 return 0;
43}
44
45struct snd_card *aoa_get_card(void)
46{
47 if (aoa_card)
48 return aoa_card->alsa_card;
49 return NULL;
50}
51EXPORT_SYMBOL_GPL(aoa_get_card);
52
53void aoa_alsa_cleanup(void)
54{
55 if (aoa_card) {
56 snd_card_free(aoa_card->alsa_card);
57 aoa_card = NULL;
58 }
59}
60
61int aoa_snd_device_new(snd_device_type_t type,
62 void * device_data, struct snd_device_ops * ops)
63{
64 struct snd_card *card = aoa_get_card();
65 int err;
66
67 if (!card) return -ENOMEM;
68
69 err = snd_device_new(card, type, device_data, ops);
70 if (err) {
71 printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err);
72 return err;
73 }
74 err = snd_device_register(card, device_data);
75 if (err) {
76 printk(KERN_ERR "snd-aoa: failed to register "
77 "snd device (%d)\n", err);
78 printk(KERN_ERR "snd-aoa: have you forgotten the "
79 "dev_register callback?\n");
80 snd_device_free(card, device_data);
81 }
82 return err;
83}
84EXPORT_SYMBOL_GPL(aoa_snd_device_new);
85
86int aoa_snd_ctl_add(struct snd_kcontrol* control)
87{
88 int err;
89
90 if (!aoa_card) return -ENODEV;
91
92 err = snd_ctl_add(aoa_card->alsa_card, control);
93 if (err)
94 printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n",
95 err);
96 return err;
97}
98EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);