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f3d9478b JB |
1 | /* |
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 | ||
11 | static int index = -1; | |
12 | module_param(index, int, 0444); | |
13 | MODULE_PARM_DESC(index, "index for AOA sound card."); | |
14 | ||
15 | static struct aoa_card *aoa_card; | |
16 | ||
17 | int 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 | ||
45 | struct snd_card *aoa_get_card(void) | |
46 | { | |
47 | if (aoa_card) | |
48 | return aoa_card->alsa_card; | |
49 | return NULL; | |
50 | } | |
51 | EXPORT_SYMBOL_GPL(aoa_get_card); | |
52 | ||
53 | void aoa_alsa_cleanup(void) | |
54 | { | |
55 | if (aoa_card) { | |
56 | snd_card_free(aoa_card->alsa_card); | |
57 | aoa_card = NULL; | |
58 | } | |
59 | } | |
60 | ||
61 | int aoa_snd_device_new(snd_device_type_t type, | |
73e85fe8 | 62 | void * device_data, struct snd_device_ops * ops) |
f3d9478b JB |
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 | } | |
84 | EXPORT_SYMBOL_GPL(aoa_snd_device_new); | |
85 | ||
86 | int 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 | } | |
98 | EXPORT_SYMBOL_GPL(aoa_snd_ctl_add); |