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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-10 14:32:45 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-10 15:40:02 +0000
commit0d0cf00a7fc63cee9a4c4a3b8612879b4f7f42ba (patch)
tree27faa0bd462b4852f16d88be12e4a657700c0bec /sound
parent1e5fa31f96d558e53fe80e943305104bf4339711 (diff)
ASoC: Add codec registration API
Another part of the backporting of Liam's ASoC v2 work. Using this is more complicated than the other registration types since currently the codec is instantiated during the probe of the ASoC device so we can't currently readily wait for the codec to register. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/soc-core.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 4d2db7cfaf4..b098c0b4c58 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -47,6 +47,7 @@ static DEFINE_MUTEX(client_mutex);
static LIST_HEAD(card_list);
static LIST_HEAD(dai_list);
static LIST_HEAD(platform_list);
+static LIST_HEAD(codec_list);
static int snd_soc_register_card(struct snd_soc_card *card);
static int snd_soc_unregister_card(struct snd_soc_card *card);
@@ -2224,6 +2225,48 @@ void snd_soc_unregister_platform(struct snd_soc_platform *platform)
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
+/**
+ * snd_soc_register_codec - Register a codec with the ASoC core
+ *
+ * @param codec codec to register
+ */
+int snd_soc_register_codec(struct snd_soc_codec *codec)
+{
+ if (!codec->name)
+ return -EINVAL;
+
+ /* The device should become mandatory over time */
+ if (!codec->dev)
+ printk(KERN_WARNING "No device for codec %s\n", codec->name);
+
+ INIT_LIST_HEAD(&codec->list);
+
+ mutex_lock(&client_mutex);
+ list_add(&codec->list, &codec_list);
+ snd_soc_instantiate_cards();
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Registered codec '%s'\n", codec->name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_codec);
+
+/**
+ * snd_soc_unregister_codec - Unregister a codec from the ASoC core
+ *
+ * @param codec codec to unregister
+ */
+void snd_soc_unregister_codec(struct snd_soc_codec *codec)
+{
+ mutex_lock(&client_mutex);
+ list_del(&codec->list);
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Unregistered codec '%s'\n", codec->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
+
static int __init snd_soc_init(void)
{
#ifdef CONFIG_DEBUG_FS