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-rw-r--r--include/sound/soc.h5
-rw-r--r--sound/soc/soc-core.c39
2 files changed, 44 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 5297ba7e2c4..e6704c0a440 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -192,6 +192,11 @@ void snd_soc_unregister_platform(struct snd_soc_platform *platform);
int snd_soc_register_codec(struct snd_soc_codec *codec);
void snd_soc_unregister_codec(struct snd_soc_codec *codec);
+#ifdef CONFIG_PM
+int snd_soc_suspend_device(struct device *dev);
+int snd_soc_resume_device(struct device *dev);
+#endif
+
/* pcm <-> DAI connect */
void snd_soc_free_pcms(struct snd_soc_device *socdev);
int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index e1a920cd895..44141178ff4 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -788,6 +788,45 @@ static int soc_resume(struct platform_device *pdev)
return 0;
}
+/**
+ * snd_soc_suspend_device: Notify core of device suspend
+ *
+ * @dev: Device being suspended.
+ *
+ * In order to ensure that the entire audio subsystem is suspended in a
+ * coordinated fashion ASoC devices should suspend themselves when
+ * called by ASoC. When the standard kernel suspend process asks the
+ * device to suspend it should call this function to initiate a suspend
+ * of the entire ASoC card.
+ *
+ * \note Currently this function is stubbed out.
+ */
+int snd_soc_suspend_device(struct device *dev)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_suspend_device);
+
+/**
+ * snd_soc_resume_device: Notify core of device resume
+ *
+ * @dev: Device being resumed.
+ *
+ * In order to ensure that the entire audio subsystem is resumed in a
+ * coordinated fashion ASoC devices should resume themselves when called
+ * by ASoC. When the standard kernel resume process asks the device
+ * to resume it should call this function. Once all the components of
+ * the card have notified that they are ready to be resumed the card
+ * will be resumed.
+ *
+ * \note Currently this function is stubbed out.
+ */
+int snd_soc_resume_device(struct device *dev)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_resume_device);
+
#else
#define soc_suspend NULL
#define soc_resume NULL