2 files changed, 174 insertions, 104 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index a72af6327987..b13eecbaea78 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -13,6 +13,7 @@
 #ifndef __LINUX_SND_SOC_H
 #define __LINUX_SND_SOC_H
 
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <linux/notifier.h>
@@ -630,6 +631,26 @@ struct snd_soc_compr_ops {
         int (*trigger)(struct snd_compr_stream *);
 };
 
+/* component interface */
+struct snd_soc_component_driver {
+        const char *name;
+
+        /* DT */
+        int (*of_xlate_dai_name)(struct snd_soc_component *component,
+                                 struct of_phandle_args *args,
+                                 const char **dai_name);
+};
+
+struct snd_soc_component {
+        const char *name;
+        int id;
+        int num_dai;
+        struct device *dev;
+        struct list_head list;
+
+        const struct snd_soc_component_driver *driver;
+};
+
 /* SoC Audio Codec device */
 struct snd_soc_codec {
         const char *name;
@@ -670,6 +691,9 @@ struct snd_soc_codec {
         struct mutex cache_rw_mutex;
         int val_bytes;
 
+        /* component */
+        struct snd_soc_component component;
+
         /* dapm */
         struct snd_soc_dapm_context dapm;
         unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
@@ -688,6 +712,7 @@ struct snd_soc_codec_driver {
         int (*remove)(struct snd_soc_codec *);
         int (*suspend)(struct snd_soc_codec *);
         int (*resume)(struct snd_soc_codec *);
+        struct snd_soc_component_driver component_driver;
 
         /* Default control and setup, added after probe() is run */
         const struct snd_kcontrol_new *controls;
@@ -801,20 +826,6 @@ struct snd_soc_platform {
 #endif
 };
 
-struct snd_soc_component_driver {
-        const char *name;
-};
-
-struct snd_soc_component {
-        const char *name;
-        int id;
-        int num_dai;
-        struct device *dev;
-        struct list_head list;
-
-        const struct snd_soc_component_driver *driver;
-};
-
 struct snd_soc_dai_link {
         /* config - must be set by machine driver */
         const char *name;                       /* Codec name */
@@ -1145,6 +1156,8 @@ int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
                                    const char *propname);
 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
                                      const char *prefix);
+int snd_soc_of_get_dai_name(struct device_node *of_node,
+                            const char **dai_name);
 
 #include <sound/soc-dai.h>
 
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 16a3930c6375..67cfb5f5ca96 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3996,6 +3996,112 @@ static void snd_soc_unregister_dais(struct device *dev, size_t count)
 }
 
 /**
+ * snd_soc_register_component - Register a component with the ASoC core
+ *
+ */
+static int
+__snd_soc_register_component(struct device *dev,
+                             struct snd_soc_component *cmpnt,
+                             const struct snd_soc_component_driver *cmpnt_drv,
+                             struct snd_soc_dai_driver *dai_drv,
+                             int num_dai, bool allow_single_dai)
+{
+        int ret;
+
+        dev_dbg(dev, "component register %s\n", dev_name(dev));
+
+        if (!cmpnt) {
+                dev_err(dev, "ASoC: Failed to connecting component\n");
+                return -ENOMEM;
+        }
+
+        cmpnt->name = fmt_single_name(dev, &cmpnt->id);
+        if (!cmpnt->name) {
+                dev_err(dev, "ASoC: Failed to simplifying name\n");
+                return -ENOMEM;
+        }
+
+        cmpnt->dev      = dev;
+        cmpnt->driver   = cmpnt_drv;
+        cmpnt->num_dai  = num_dai;
+
+        /*
+         * snd_soc_register_dai()  uses fmt_single_name(), and
+         * snd_soc_register_dais() uses fmt_multiple_name()
+         * for dai->name which is used for name based matching
+         *
+         * this function is used from cpu/codec.
+         * allow_single_dai flag can ignore "codec" driver reworking
+         * since it had been used snd_soc_register_dais(),
+         */
+        if ((1 == num_dai) && allow_single_dai)
+                ret = snd_soc_register_dai(dev, dai_drv);
+        else
+                ret = snd_soc_register_dais(dev, dai_drv, num_dai);
+        if (ret < 0) {
+                dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
+                goto error_component_name;
+        }
+
+        mutex_lock(&client_mutex);
+        list_add(&cmpnt->list, &component_list);
+        mutex_unlock(&client_mutex);
+
+        dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
+
+        return ret;
+
+error_component_name:
+        kfree(cmpnt->name);
+
+        return ret;
+}
+
+int snd_soc_register_component(struct device *dev,
+                               const struct snd_soc_component_driver *cmpnt_drv,
+                               struct snd_soc_dai_driver *dai_drv,
+                               int num_dai)
+{
+        struct snd_soc_component *cmpnt;
+
+        cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
+        if (!cmpnt) {
+                dev_err(dev, "ASoC: Failed to allocate memory\n");
+                return -ENOMEM;
+        }
+
+        return __snd_soc_register_component(dev, cmpnt, cmpnt_drv,
+                                            dai_drv, num_dai, true);
+}
+EXPORT_SYMBOL_GPL(snd_soc_register_component);
+
+/**
+ * snd_soc_unregister_component - Unregister a component from the ASoC core
+ *
+ */
+void snd_soc_unregister_component(struct device *dev)
+{
+        struct snd_soc_component *cmpnt;
+
+        list_for_each_entry(cmpnt, &component_list, list) {
+                if (dev == cmpnt->dev)
+                        goto found;
+        }
+        return;
+
+found:
+        snd_soc_unregister_dais(dev, cmpnt->num_dai);
+
+        mutex_lock(&client_mutex);
+        list_del(&cmpnt->list);
+        mutex_unlock(&client_mutex);
+
+        dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
+        kfree(cmpnt->name);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
+
+/**
  * snd_soc_add_platform - Add a platform to the ASoC core
  * @dev: The parent device for the platform
  * @platform: The platform to add
@@ -4182,10 +4288,12 @@ int snd_soc_register_codec(struct device *dev,
         list_add(&codec->list, &codec_list);
         mutex_unlock(&client_mutex);
 
-        /* register any DAIs */
-        ret = snd_soc_register_dais(dev, dai_drv, num_dai);
+        /* register component */
+        ret = __snd_soc_register_component(dev, &codec->component,
+                                           &codec_drv->component_driver,
+                                           dai_drv, num_dai, false);
         if (ret < 0) {
-                dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret);
+                dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret);
                 goto fail_codec_name;
         }
 
@@ -4220,7 +4328,7 @@ void snd_soc_unregister_codec(struct device *dev)
         return;
 
 found:
-        snd_soc_unregister_dais(dev, codec->num_dai);
+        snd_soc_unregister_component(dev);
 
         mutex_lock(&client_mutex);
         list_del(&codec->list);
@@ -4234,92 +4342,6 @@ found:
 }
 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
 
-
-/**
- * snd_soc_register_component - Register a component with the ASoC core
- *
- */
-int snd_soc_register_component(struct device *dev,
-                         const struct snd_soc_component_driver *cmpnt_drv,
-                         struct snd_soc_dai_driver *dai_drv,
-                         int num_dai)
-{
-        struct snd_soc_component *cmpnt;
-        int ret;
-
-        dev_dbg(dev, "component register %s\n", dev_name(dev));
-
-        cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
-        if (!cmpnt) {
-                dev_err(dev, "ASoC: Failed to allocate memory\n");
-                return -ENOMEM;
-        }
-
-        cmpnt->name = fmt_single_name(dev, &cmpnt->id);
-        if (!cmpnt->name) {
-                dev_err(dev, "ASoC: Failed to simplifying name\n");
-                return -ENOMEM;
-        }
-
-        cmpnt->dev      = dev;
-        cmpnt->driver   = cmpnt_drv;
-        cmpnt->num_dai  = num_dai;
-
-        /*
-         * snd_soc_register_dai()  uses fmt_single_name(), and
-         * snd_soc_register_dais() uses fmt_multiple_name()
-         * for dai->name which is used for name based matching
-         */
-        if (1 == num_dai)
-                ret = snd_soc_register_dai(dev, dai_drv);
-        else
-                ret = snd_soc_register_dais(dev, dai_drv, num_dai);
-        if (ret < 0) {
-                dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
-                goto error_component_name;
-        }
-
-        mutex_lock(&client_mutex);
-        list_add(&cmpnt->list, &component_list);
-        mutex_unlock(&client_mutex);
-
-        dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
-
-        return ret;
-
-error_component_name:
-        kfree(cmpnt->name);
-
-        return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_register_component);
-
-/**
- * snd_soc_unregister_component - Unregister a component from the ASoC core
- *
- */
-void snd_soc_unregister_component(struct device *dev)
-{
-        struct snd_soc_component *cmpnt;
-
-        list_for_each_entry(cmpnt, &component_list, list) {
-                if (dev == cmpnt->dev)
-                        goto found;
-        }
-        return;
-
-found:
-        snd_soc_unregister_dais(dev, cmpnt->num_dai);
-
-        mutex_lock(&client_mutex);
-        list_del(&cmpnt->list);
-        mutex_unlock(&client_mutex);
-
-        dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
-        kfree(cmpnt->name);
-}
-EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
-
 /* Retrieve a card's name from device tree */
 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
                                const char *propname)
@@ -4507,6 +4529,41 @@ unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
 }
 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
 
+int snd_soc_of_get_dai_name(struct device_node *of_node,
+                            const char **dai_name)
+{
+        struct snd_soc_component *pos;
+        struct of_phandle_args args;
+        int ret;
+
+        ret = of_parse_phandle_with_args(of_node, "sound-dai",
+                                         "#sound-dai-cells", 0, &args);
+        if (ret)
+                return ret;
+
+        ret = -EPROBE_DEFER;
+
+        mutex_lock(&client_mutex);
+        list_for_each_entry(pos, &component_list, list) {
+                if (pos->dev->of_node != args.np)
+                        continue;
+
+                if (!pos->driver->of_xlate_dai_name) {
+                        ret = -ENOSYS;
+                        break;
+                }
+
+                ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
+                break;
+        }
+        mutex_unlock(&client_mutex);
+
+        of_node_put(args.np);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
+
 static int __init snd_soc_init(void)
 {
 #ifdef CONFIG_DEBUG_FS