ASoC: Add snd_soc_{add, remove}_platform
snd_soc_{add,remove}_platform are similar to snd_soc_register_platform and
snd_soc_unregister_platform with the difference that they won't allocate and
free the snd_soc_platform structure.
Also add snd_soc_lookup_platform which looks up a platform by the device it has
been registered for.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index f619905..4429254 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -373,6 +373,10 @@
int snd_soc_register_platform(struct device *dev,
const struct snd_soc_platform_driver *platform_drv);
void snd_soc_unregister_platform(struct device *dev);
+int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
+ const struct snd_soc_platform_driver *platform_drv);
+void snd_soc_remove_platform(struct snd_soc_platform *platform);
+struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev);
int snd_soc_register_codec(struct device *dev,
const struct snd_soc_codec_driver *codec_drv,
struct snd_soc_dai_driver *dai_drv, int num_dai);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 4d24b5e..0e64af1 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3901,21 +3901,14 @@
EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
/**
- * snd_soc_register_platform - Register a platform with the ASoC core
- *
- * @platform: platform to register
+ * snd_soc_add_platform - Add a platform to the ASoC core
+ * @dev: The parent device for the platform
+ * @platform: The platform to add
+ * @platform_driver: The driver for the platform
*/
-int snd_soc_register_platform(struct device *dev,
+int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
const struct snd_soc_platform_driver *platform_drv)
{
- struct snd_soc_platform *platform;
-
- dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
-
- platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
- if (platform == NULL)
- return -ENOMEM;
-
/* create platform component name */
platform->name = fmt_single_name(dev, &platform->id);
if (platform->name == NULL) {
@@ -3938,9 +3931,63 @@
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_add_platform);
+
+/**
+ * snd_soc_register_platform - Register a platform with the ASoC core
+ *
+ * @platform: platform to register
+ */
+int snd_soc_register_platform(struct device *dev,
+ const struct snd_soc_platform_driver *platform_drv)
+{
+ struct snd_soc_platform *platform;
+ int ret;
+
+ dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
+
+ platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
+ if (platform == NULL)
+ return -ENOMEM;
+
+ ret = snd_soc_add_platform(dev, platform, platform_drv);
+ if (ret)
+ kfree(platform);
+
+ return ret;
+}
EXPORT_SYMBOL_GPL(snd_soc_register_platform);
/**
+ * snd_soc_remove_platform - Remove a platform from the ASoC core
+ * @platform: the platform to remove
+ */
+void snd_soc_remove_platform(struct snd_soc_platform *platform)
+{
+ mutex_lock(&client_mutex);
+ list_del(&platform->list);
+ mutex_unlock(&client_mutex);
+
+ dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
+ platform->name);
+ kfree(platform->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
+
+struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
+{
+ struct snd_soc_platform *platform;
+
+ list_for_each_entry(platform, &platform_list, list) {
+ if (dev == platform->dev)
+ return platform;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
+
+/**
* snd_soc_unregister_platform - Unregister a platform from the ASoC core
*
* @platform: platform to unregister
@@ -3949,19 +3996,11 @@
{
struct snd_soc_platform *platform;
- list_for_each_entry(platform, &platform_list, list) {
- if (dev == platform->dev)
- goto found;
- }
- return;
+ platform = snd_soc_lookup_platform(dev);
+ if (!platform)
+ return;
-found:
- mutex_lock(&client_mutex);
- list_del(&platform->list);
- mutex_unlock(&client_mutex);
-
- dev_dbg(dev, "ASoC: Unregistered platform '%s'\n", platform->name);
- kfree(platform->name);
+ snd_soc_remove_platform(platform);
kfree(platform);
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);