ASoC: simple-card-utils: add asoc_simple_card_parse_dai()

simple-card needs to get its dai name and endpoint node.
This patch makes it simple style standard

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 54 insertions, 0 deletions

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index 1392eb56cf0e..62b392695d2d 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -41,4 +41,21 @@ int asoc_simple_card_parse_clk(struct device_node *node,
                                struct device_node *dai_of_node,
                                struct asoc_simple_dai *simple_dai);
 
+#define asoc_simple_card_parse_cpu(node, dai_link,                              \
+                                   list_name, cells_name, is_single_link)       \
+        asoc_simple_card_parse_dai(node, &dai_link->cpu_of_node,                \
+                &dai_link->cpu_dai_name, list_name, cells_name, is_single_link)
+#define asoc_simple_card_parse_codec(node, dai_link, list_name, cells_name)     \
+        asoc_simple_card_parse_dai(node, &dai_link->codec_of_node,              \
+                &dai_link->codec_dai_name, list_name, cells_name, NULL)
+#define asoc_simple_card_parse_platform(node, dai_link, list_name, cells_name)  \
+        asoc_simple_card_parse_dai(node, &dai_link->platform_of_node,           \
+                NULL, list_name, cells_name, NULL)
+int asoc_simple_card_parse_dai(struct device_node *node,
+                                  struct device_node **endpoint_np,
+                                  const char **dai_name,
+                                  const char *list_name,
+                                  const char *cells_name,
+                                  int *is_single_links);
+
 #endif /* __SIMPLE_CARD_CORE_H */
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 16f65f972d04..27e6d038a902 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -127,6 +127,43 @@ int asoc_simple_card_parse_clk(struct device_node *node,
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_parse_clk);
 
+int asoc_simple_card_parse_dai(struct device_node *node,
+                                    struct device_node **dai_of_node,
+                                    const char **dai_name,
+                                    const char *list_name,
+                                    const char *cells_name,
+                                    int *is_single_link)
+{
+        struct of_phandle_args args;
+        int ret;
+
+        if (!node)
+                return 0;
+
+        /*
+         * Get node via "sound-dai = <&phandle port>"
+         * it will be used as xxx_of_node on soc_bind_dai_link()
+         */
+        ret = of_parse_phandle_with_args(node, list_name, cells_name, 0, &args);
+        if (ret)
+                return ret;
+
+        /* Get dai->name */
+        if (dai_name) {
+                ret = snd_soc_of_get_dai_name(node, dai_name);
+                if (ret < 0)
+                        return ret;
+        }
+
+        *dai_of_node = args.np;
+
+        if (is_single_link)
+                *is_single_link = !args.args_count;
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_parse_dai);
+
 /* Module information */
 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");