diff options
| -rw-r--r-- | include/sound/soc.h | 5 | ||||
| -rw-r--r-- | sound/soc/soc-core.c | 62 |
2 files changed, 67 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index 79d855d2bdd..4a578b5d855 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -333,6 +333,11 @@ struct snd_soc_dai_link { /* SoC card */ struct snd_soc_card { char *name; + struct device *dev; + + struct list_head list; + + int instantiated; int (*probe)(struct platform_device *pdev); int (*remove)(struct platform_device *pdev); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 2f2a8d93bbf..44fbd71ce80 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -43,6 +43,12 @@ static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); static struct dentry *debugfs_root; #endif +static DEFINE_MUTEX(client_mutex); +static LIST_HEAD(card_list); + +static int snd_soc_register_card(struct snd_soc_card *card); +static int snd_soc_unregister_card(struct snd_soc_card *card); + /* * This is a timeout to do a DAPM powerdown after a stream is closed(). * It can be used to eliminate pops between different playback streams, e.g. @@ -784,6 +790,14 @@ static int soc_probe(struct platform_device *pdev) /* Bodge while we push things out of socdev */ card->socdev = socdev; + /* Bodge while we unpick instantiation */ + card->dev = &pdev->dev; + ret = snd_soc_register_card(card); + if (ret != 0) { + dev_err(&pdev->dev, "Failed to register card\n"); + return ret; + } + if (card->probe) { ret = card->probe(pdev); if (ret < 0) @@ -863,6 +877,8 @@ static int soc_remove(struct platform_device *pdev) if (card->remove) card->remove(pdev); + snd_soc_unregister_card(card); + return 0; } @@ -1957,6 +1973,52 @@ int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute) } EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); +/** + * snd_soc_register_card - Register a card with the ASoC core + * + * @param card Card to register + * + * Note that currently this is an internal only function: it will be + * exposed to machine drivers after further backporting of ASoC v2 + * registration APIs. + */ +static int snd_soc_register_card(struct snd_soc_card *card) +{ + if (!card->name || !card->dev) + return -EINVAL; + + INIT_LIST_HEAD(&card->list); + card->instantiated = 0; + + mutex_lock(&client_mutex); + list_add(&card->list, &card_list); + mutex_unlock(&client_mutex); + + dev_dbg(card->dev, "Registered card '%s'\n", card->name); + + return 0; +} + +/** + * snd_soc_unregister_card - Unregister a card with the ASoC core + * + * @param card Card to unregister + * + * Note that currently this is an internal only function: it will be + * exposed to machine drivers after further backporting of ASoC v2 + * registration APIs. + */ +static int snd_soc_unregister_card(struct snd_soc_card *card) +{ + mutex_lock(&client_mutex); + list_del(&card->list); + mutex_unlock(&client_mutex); + + dev_dbg(card->dev, "Unregistered card '%s'\n", card->name); + + return 0; +} + static int __devinit snd_soc_init(void) { #ifdef CONFIG_DEBUG_FS |