ASoC: soc-core.c: add snd_soc_{of_}get_dlc()

Current soc-core.c has snd_soc_{of_}get_dai_name() to get DAI name
for dlc (snd_soc_dai_link_component). It gets .dai_name, but we need
.of_node too. Therefor user need to arrange.

It will be more useful if it gets both .dai_name and .of_node.
This patch adds snd_soc_{of_}get_dlc() for it, and existing functions
uses it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87r0q6dgnm.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc.h b/include/sound/soc.h
index a7ae8b2..943f0a1 100644 (file)
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1309,6 +1309,12 @@ unsigned int snd_soc_daifmt_parse_clock_provider_raw(struct device_node *np,
                snd_soc_daifmt_parse_clock_provider_as_bitmap(np, prefix))
 
 int snd_soc_get_stream_cpu(struct snd_soc_dai_link *dai_link, int stream);
+int snd_soc_get_dlc(const struct of_phandle_args *args,
+                   struct snd_soc_dai_link_component *dlc);
+int snd_soc_of_get_dlc(struct device_node *of_node,
+                      struct of_phandle_args *args,
+                      struct snd_soc_dai_link_component *dlc,
+                      int index);
 int snd_soc_get_dai_id(struct device_node *ep);
 int snd_soc_get_dai_name(const struct of_phandle_args *args,
                         const char **dai_name);

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index e830892..8dba5bb 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3257,8 +3257,7 @@ int snd_soc_get_dai_id(struct device_node *ep)
 }
 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
 
-int snd_soc_get_dai_name(const struct of_phandle_args *args,
-                               const char **dai_name)
+int snd_soc_get_dlc(const struct of_phandle_args *args, struct snd_soc_dai_link_component *dlc)
 {
        struct snd_soc_component *pos;
        int ret = -EPROBE_DEFER;
@@ -3270,7 +3269,7 @@ int snd_soc_get_dai_name(const struct of_phandle_args *args,
                if (component_of_node != args->np || !pos->num_dai)
                        continue;
 
-               ret = snd_soc_component_of_xlate_dai_name(pos, args, dai_name);
+               ret = snd_soc_component_of_xlate_dai_name(pos, args, &dlc->dai_name);
                if (ret == -ENOTSUPP) {
                        struct snd_soc_dai *dai;
                        int id = -1;
@@ -3301,9 +3300,10 @@ int snd_soc_get_dai_name(const struct of_phandle_args *args,
                                id--;
                        }
 
-                       *dai_name = dai->driver->name;
-                       if (!*dai_name)
-                               *dai_name = pos->name;
+                       dlc->of_node    = args->np;
+                       dlc->dai_name   = dai->driver->name;
+                       if (!dlc->dai_name)
+                               dlc->dai_name = pos->name;
                } else if (ret) {
                        /*
                         * if another error than ENOTSUPP is returned go on and
@@ -3319,22 +3319,49 @@ int snd_soc_get_dai_name(const struct of_phandle_args *args,
        mutex_unlock(&client_mutex);
        return ret;
 }
-EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
+EXPORT_SYMBOL_GPL(snd_soc_get_dlc);
 
-int snd_soc_of_get_dai_name(struct device_node *of_node,
-                           const char **dai_name)
+int snd_soc_of_get_dlc(struct device_node *of_node,
+                      struct of_phandle_args *args,
+                      struct snd_soc_dai_link_component *dlc,
+                      int index)
 {
-       struct of_phandle_args args;
+       struct of_phandle_args __args;
        int ret;
 
+       if (!args)
+               args = &__args;
+
        ret = of_parse_phandle_with_args(of_node, "sound-dai",
-                                        "#sound-dai-cells", 0, &args);
+                                        "#sound-dai-cells", index, args);
        if (ret)
                return ret;
 
-       ret = snd_soc_get_dai_name(&args, dai_name);
+       return snd_soc_get_dlc(args, dlc);
+}
+EXPORT_SYMBOL_GPL(snd_soc_of_get_dlc);
+
+int snd_soc_get_dai_name(const struct of_phandle_args *args,
+                        const char **dai_name)
+{
+       struct snd_soc_dai_link_component dlc;
+       int ret = snd_soc_get_dlc(args, &dlc);
 
-       of_node_put(args.np);
+       if (ret == 0)
+               *dai_name = dlc.dai_name;
+
+       return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
+
+int snd_soc_of_get_dai_name(struct device_node *of_node,
+                           const char **dai_name)
+{
+       struct snd_soc_dai_link_component dlc;
+       int ret = snd_soc_of_get_dlc(of_node, NULL, &dlc, 0);
+
+       if (ret == 0)
+               *dai_name = dlc.dai_name;
 
        return ret;
 }