projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 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); |