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authorMengdong Lin <mengdong.lin@linux.intel.com>2015-12-31 16:40:20 +0800
committerMark Brown <broonie@kernel.org>2016-01-10 12:06:19 +0000
commit5e4fb372117f476e0c7f85418ed3e39506fbb75c (patch)
treef8daae778eee0fca54688e08433cfdc923f810dd /sound/soc
parent61b0088b6a5b98608ce00c18a057b1f5bcb5f8b3 (diff)
ASoC: Define soc_add_dai() to add a DAI to a component
Define soc_add_dai() as a wrapper to add a single DAI to a component. It can be reused to register a DAI dynamically by topology. Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/soc-core.c88
1 files changed, 52 insertions, 36 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 6b1982dcedf1..1bd0b37b907f 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2744,6 +2744,56 @@ static void snd_soc_unregister_dais(struct snd_soc_component *component)
}
}
+/* Create a DAI and add it to the component's DAI list */
+static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
+ struct snd_soc_dai_driver *dai_drv,
+ bool legacy_dai_naming)
+{
+ struct device *dev = component->dev;
+ struct snd_soc_dai *dai;
+
+ dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
+
+ dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
+ if (dai == NULL)
+ return NULL;
+
+ /*
+ * Back in the old days when we still had component-less DAIs,
+ * instead of having a static name, component-less DAIs would
+ * inherit the name of the parent device so it is possible to
+ * register multiple instances of the DAI. We still need to keep
+ * the same naming style even though those DAIs are not
+ * component-less anymore.
+ */
+ if (legacy_dai_naming &&
+ (dai_drv->id == 0 || dai_drv->name == NULL)) {
+ dai->name = fmt_single_name(dev, &dai->id);
+ } else {
+ dai->name = fmt_multiple_name(dev, dai_drv);
+ if (dai_drv->id)
+ dai->id = dai_drv->id;
+ else
+ dai->id = component->num_dai;
+ }
+ if (dai->name == NULL) {
+ kfree(dai);
+ return NULL;
+ }
+
+ dai->component = component;
+ dai->dev = dev;
+ dai->driver = dai_drv;
+ if (!dai->driver->ops)
+ dai->driver->ops = &null_dai_ops;
+
+ list_add(&dai->list, &component->dai_list);
+ component->num_dai++;
+
+ dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
+ return dai;
+}
+
/**
* snd_soc_register_dais - Register a DAI with the ASoC core
*
@@ -2765,49 +2815,15 @@ static int snd_soc_register_dais(struct snd_soc_component *component,
dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
component->dai_drv = dai_drv;
- component->num_dai = count;
for (i = 0; i < count; i++) {
- dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
+ dai = soc_add_dai(component, dai_drv + i,
+ count == 1 && legacy_dai_naming);
if (dai == NULL) {
ret = -ENOMEM;
goto err;
}
-
- /*
- * Back in the old days when we still had component-less DAIs,
- * instead of having a static name, component-less DAIs would
- * inherit the name of the parent device so it is possible to
- * register multiple instances of the DAI. We still need to keep
- * the same naming style even though those DAIs are not
- * component-less anymore.
- */
- if (count == 1 && legacy_dai_naming &&
- (dai_drv[i].id == 0 || dai_drv[i].name == NULL)) {
- dai->name = fmt_single_name(dev, &dai->id);
- } else {
- dai->name = fmt_multiple_name(dev, &dai_drv[i]);
- if (dai_drv[i].id)
- dai->id = dai_drv[i].id;
- else
- dai->id = i;
- }
- if (dai->name == NULL) {
- kfree(dai);
- ret = -ENOMEM;
- goto err;
- }
-
- dai->component = component;
- dai->dev = dev;
- dai->driver = &dai_drv[i];
- if (!dai->driver->ops)
- dai->driver->ops = &null_dai_ops;
-
- list_add(&dai->list, &component->dai_list);
-
- dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
}
return 0;