gma500: Set the correct bits according to the pipe
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / aoa / core / alsa.c
blob0fa3855b4790e30753b7b8ea4fb29644a6e8cd1f
1 /*
2 * Apple Onboard Audio Alsa helpers
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
6 * GPL v2, can be found in COPYING.
7 */
8 #include <linux/module.h>
9 #include "alsa.h"
11 static int index = -1;
12 module_param(index, int, 0444);
13 MODULE_PARM_DESC(index, "index for AOA sound card.");
15 static struct aoa_card *aoa_card;
17 int aoa_alsa_init(char *name, struct module *mod, struct device *dev)
19 struct snd_card *alsa_card;
20 int err;
22 if (aoa_card)
23 /* cannot be EEXIST due to usage in aoa_fabric_register */
24 return -EBUSY;
26 err = snd_card_create(index, name, mod, sizeof(struct aoa_card),
27 &alsa_card);
28 if (err < 0)
29 return err;
30 aoa_card = alsa_card->private_data;
31 aoa_card->alsa_card = alsa_card;
32 alsa_card->dev = dev;
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;
44 return 0;
47 struct snd_card *aoa_get_card(void)
49 if (aoa_card)
50 return aoa_card->alsa_card;
51 return NULL;
53 EXPORT_SYMBOL_GPL(aoa_get_card);
55 void aoa_alsa_cleanup(void)
57 if (aoa_card) {
58 snd_card_free(aoa_card->alsa_card);
59 aoa_card = NULL;
63 int aoa_snd_device_new(snd_device_type_t type,
64 void * device_data, struct snd_device_ops * ops)
66 struct snd_card *card = aoa_get_card();
67 int err;
69 if (!card) return -ENOMEM;
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;
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);
84 return err;
86 EXPORT_SYMBOL_GPL(aoa_snd_device_new);
88 int aoa_snd_ctl_add(struct snd_kcontrol* control)
90 int err;
92 if (!aoa_card) return -ENODEV;
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;
100 EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);