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Commit | Line | Data |
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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> | |
888dcb7c | 9 | #include "alsa.h" |
f3d9478b JB |
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 | ||
61e77107 | 17 | int aoa_alsa_init(char *name, struct module *mod, struct device *dev) |
f3d9478b JB |
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 | ||
bd7dd77c TI |
26 | err = snd_card_create(index, name, mod, sizeof(struct aoa_card), |
27 | &alsa_card); | |
28 | if (err < 0) | |
29 | return err; | |
f3d9478b JB |
30 | aoa_card = alsa_card->private_data; |
31 | aoa_card->alsa_card = alsa_card; | |
61e77107 | 32 | alsa_card->dev = dev; |
f3d9478b JB |
33 | strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver)); |
34 | strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname)); | |
35 | strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname)); | |
36 | strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername)); | |
37 | err = snd_card_register(aoa_card->alsa_card); | |
38 | if (err < 0) { | |
39 | printk(KERN_ERR "snd-aoa: couldn't register alsa card\n"); | |
40 | snd_card_free(aoa_card->alsa_card); | |
41 | aoa_card = NULL; | |
42 | return err; | |
43 | } | |
44 | return 0; | |
45 | } | |
46 | ||
47 | struct snd_card *aoa_get_card(void) | |
48 | { | |
49 | if (aoa_card) | |
50 | return aoa_card->alsa_card; | |
51 | return NULL; | |
52 | } | |
53 | EXPORT_SYMBOL_GPL(aoa_get_card); | |
54 | ||
55 | void aoa_alsa_cleanup(void) | |
56 | { | |
57 | if (aoa_card) { | |
58 | snd_card_free(aoa_card->alsa_card); | |
59 | aoa_card = NULL; | |
60 | } | |
61 | } | |
62 | ||
63 | int aoa_snd_device_new(snd_device_type_t type, | |
73e85fe8 | 64 | void * device_data, struct snd_device_ops * ops) |
f3d9478b JB |
65 | { |
66 | struct snd_card *card = aoa_get_card(); | |
67 | int err; | |
888dcb7c | 68 | |
f3d9478b JB |
69 | if (!card) return -ENOMEM; |
70 | ||
71 | err = snd_device_new(card, type, device_data, ops); | |
72 | if (err) { | |
73 | printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err); | |
74 | return err; | |
75 | } | |
76 | err = snd_device_register(card, device_data); | |
77 | if (err) { | |
78 | printk(KERN_ERR "snd-aoa: failed to register " | |
79 | "snd device (%d)\n", err); | |
80 | printk(KERN_ERR "snd-aoa: have you forgotten the " | |
81 | "dev_register callback?\n"); | |
82 | snd_device_free(card, device_data); | |
83 | } | |
84 | return err; | |
85 | } | |
86 | EXPORT_SYMBOL_GPL(aoa_snd_device_new); | |
87 | ||
88 | int aoa_snd_ctl_add(struct snd_kcontrol* control) | |
89 | { | |
90 | int err; | |
91 | ||
92 | if (!aoa_card) return -ENODEV; | |
93 | ||
94 | err = snd_ctl_add(aoa_card->alsa_card, control); | |
95 | if (err) | |
96 | printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n", | |
97 | err); | |
98 | return err; | |
99 | } | |
100 | EXPORT_SYMBOL_GPL(aoa_snd_ctl_add); |