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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-11-30 23:31:24 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-09 10:49:26 +0000
commit9115171a6b79b6b4d5c6697f123556b6efc37f1f (patch)
tree0889dc28a991c27947c5b65f611e2e8f600deb69
parentc5af3a2e192d333997d1e191f3eba7fd2f869681 (diff)
ASoC: Add DAI registration API
Add API calls to register and unregister DAIs with the core. Currently these APIs are ineffective. Since multiple DAIs for a given device are a common case bulk variants are provided. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--include/sound/soc-dai.h8
-rw-r--r--sound/soc/soc-core.c83
2 files changed, 91 insertions, 0 deletions
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index e2d5f76838c..24247f76360 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -100,6 +100,12 @@ struct snd_soc_dai_ops;
struct snd_soc_dai;
struct snd_ac97_bus_ops;
+/* Digital Audio Interface registration */
+int snd_soc_register_dai(struct snd_soc_dai *dai);
+void snd_soc_unregister_dai(struct snd_soc_dai *dai);
+int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count);
+void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count);
+
/* Digital Audio Interface clocking API.*/
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir);
@@ -186,6 +192,8 @@ struct snd_soc_dai {
unsigned int id;
int ac97_control;
+ struct device *dev;
+
/* DAI callbacks */
int (*probe)(struct platform_device *pdev,
struct snd_soc_dai *dai);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 44fbd71ce80..03460b068f1 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -45,6 +45,7 @@ static struct dentry *debugfs_root;
static DEFINE_MUTEX(client_mutex);
static LIST_HEAD(card_list);
+static LIST_HEAD(dai_list);
static int snd_soc_register_card(struct snd_soc_card *card);
static int snd_soc_unregister_card(struct snd_soc_card *card);
@@ -2019,6 +2020,88 @@ static int snd_soc_unregister_card(struct snd_soc_card *card)
return 0;
}
+/**
+ * snd_soc_register_dai - Register a DAI with the ASoC core
+ *
+ * @param dai DAI to register
+ */
+int snd_soc_register_dai(struct snd_soc_dai *dai)
+{
+ if (!dai->name)
+ return -EINVAL;
+
+ /* The device should become mandatory over time */
+ if (!dai->dev)
+ printk(KERN_WARNING "No device for DAI %s\n", dai->name);
+
+ INIT_LIST_HEAD(&dai->list);
+
+ mutex_lock(&client_mutex);
+ list_add(&dai->list, &dai_list);
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Registered DAI '%s'\n", dai->name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_dai);
+
+/**
+ * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
+ *
+ * @param dai DAI to unregister
+ */
+void snd_soc_unregister_dai(struct snd_soc_dai *dai)
+{
+ mutex_lock(&client_mutex);
+ list_del(&dai->list);
+ mutex_unlock(&client_mutex);
+
+ pr_debug("Unregistered DAI '%s'\n", dai->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
+
+/**
+ * snd_soc_register_dais - Register multiple DAIs with the ASoC core
+ *
+ * @param dai Array of DAIs to register
+ * @param count Number of DAIs
+ */
+int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count)
+{
+ int i, ret;
+
+ for (i = 0; i < count; i++) {
+ ret = snd_soc_register_dai(&dai[i]);
+ if (ret != 0)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ for (i--; i >= 0; i--)
+ snd_soc_unregister_dai(&dai[i]);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_dais);
+
+/**
+ * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
+ *
+ * @param dai Array of DAIs to unregister
+ * @param count Number of DAIs
+ */
+void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ snd_soc_unregister_dai(&dai[i]);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
+
static int __devinit snd_soc_init(void)
{
#ifdef CONFIG_DEBUG_FS