2 files changed, 67 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 79d855d2bddd..4a578b5d855c 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -333,6 +333,11 @@ struct snd_soc_dai_link  {
 /* SoC card */
 struct snd_soc_card {
         char *name;
+        struct device *dev;
+
+        struct list_head list;
+
+        int instantiated;
 
         int (*probe)(struct platform_device *pdev);
         int (*remove)(struct platform_device *pdev);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 2f2a8d93bbf0..44fbd71ce80f 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -43,6 +43,12 @@ static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
 static struct dentry *debugfs_root;
 #endif
 
+static DEFINE_MUTEX(client_mutex);
+static LIST_HEAD(card_list);
+
+static int snd_soc_register_card(struct snd_soc_card *card);
+static int snd_soc_unregister_card(struct snd_soc_card *card);
+
 /*
  * This is a timeout to do a DAPM powerdown after a stream is closed().
  * It can be used to eliminate pops between different playback streams, e.g.
@@ -784,6 +790,14 @@ static int soc_probe(struct platform_device *pdev)
         /* Bodge while we push things out of socdev */
         card->socdev = socdev;
 
+        /* Bodge while we unpick instantiation */
+        card->dev = &pdev->dev;
+        ret = snd_soc_register_card(card);
+        if (ret != 0) {
+                dev_err(&pdev->dev, "Failed to register card\n");
+                return ret;
+        }
+
         if (card->probe) {
                 ret = card->probe(pdev);
                 if (ret < 0)
@@ -863,6 +877,8 @@ static int soc_remove(struct platform_device *pdev)
         if (card->remove)
                 card->remove(pdev);
 
+        snd_soc_unregister_card(card);
+
         return 0;
 }
 
@@ -1957,6 +1973,52 @@ int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
 }
 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
 
+/**
+ * snd_soc_register_card - Register a card with the ASoC core
+ *
+ * @param card Card to register
+ *
+ * Note that currently this is an internal only function: it will be
+ * exposed to machine drivers after further backporting of ASoC v2
+ * registration APIs.
+ */
+static int snd_soc_register_card(struct snd_soc_card *card)
+{
+        if (!card->name || !card->dev)
+                return -EINVAL;
+
+        INIT_LIST_HEAD(&card->list);
+        card->instantiated = 0;
+
+        mutex_lock(&client_mutex);
+        list_add(&card->list, &card_list);
+        mutex_unlock(&client_mutex);
+
+        dev_dbg(card->dev, "Registered card '%s'\n", card->name);
+
+        return 0;
+}
+
+/**
+ * snd_soc_unregister_card - Unregister a card with the ASoC core
+ *
+ * @param card Card to unregister
+ *
+ * Note that currently this is an internal only function: it will be
+ * exposed to machine drivers after further backporting of ASoC v2
+ * registration APIs.
+ */
+static int snd_soc_unregister_card(struct snd_soc_card *card)
+{
+        mutex_lock(&client_mutex);
+        list_del(&card->list);
+        mutex_unlock(&client_mutex);
+
+        dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
+
+        return 0;
+}
+
 static int __devinit snd_soc_init(void)
 {
 #ifdef CONFIG_DEBUG_FS