Merge branch 'topic/simple' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-rcar

include/sound/simple_card_utils.h

@@ -33,4 +33,38 @@ int asoc_simple_card_set_dailink_name(struct device *dev,
 int asoc_simple_card_parse_card_name(struct snd_soc_card *card,
 				     char *prefix);
 
+#define asoc_simple_card_parse_clk_cpu(node, dai_link, simple_dai)		\
+	asoc_simple_card_parse_clk(node, dai_link->cpu_of_node, simple_dai)
+#define asoc_simple_card_parse_clk_codec(node, dai_link, simple_dai)		\
+	asoc_simple_card_parse_clk(node, dai_link->codec_of_node, simple_dai)
+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);
+
+int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
+			      struct asoc_simple_dai *simple_dai);
+
+int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link);
+void asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
+				      int is_single_links);
+
+int asoc_simple_card_clean_reference(struct snd_soc_card *card);
+
 #endif /* __SIMPLE_CARD_CORE_H */

sound/soc/generic/Makefile

@@ -1,5 +1,5 @@
-obj-$(CONFIG_SND_SIMPLE_CARD_UTILS) := simple-card-utils.o
+snd-soc-simple-card-utils-objs	:= simple-card-utils.o
-
 snd-soc-simple-card-objs	:= simple-card.o
 
-obj-$(CONFIG_SND_SIMPLE_CARD)	+= snd-soc-simple-card.o
+obj-$(CONFIG_SND_SIMPLE_CARD_UTILS)	+= snd-soc-simple-card-utils.o
+obj-$(CONFIG_SND_SIMPLE_CARD)		+= snd-soc-simple-card.o

sound/soc/generic/simple-card-utils.c

@@ -7,6 +7,8 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/clk.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <sound/simple_card_utils.h>
 
@@ -95,3 +97,148 @@ int asoc_simple_card_parse_card_name(struct snd_soc_card *card,
 	return 0;
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_parse_card_name);
+
+int asoc_simple_card_parse_clk(struct device_node *node,
+			       struct device_node *dai_of_node,
+			       struct asoc_simple_dai *simple_dai)
+{
+	struct clk *clk;
+	u32 val;
+
+	/*
+	 * Parse dai->sysclk come from "clocks = <&xxx>"
+	 * (if system has common clock)
+	 *  or "system-clock-frequency = <xxx>"
+	 *  or device's module clock.
+	 */
+	clk = of_clk_get(node, 0);
+	if (!IS_ERR(clk)) {
+		simple_dai->sysclk = clk_get_rate(clk);
+		simple_dai->clk = clk;
+	} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
+		simple_dai->sysclk = val;
+	} else {
+		clk = of_clk_get(dai_of_node, 0);
+		if (!IS_ERR(clk))
+			simple_dai->sysclk = clk_get_rate(clk);
+	}
+
+	return 0;
+}
+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);
+
+int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
+			      struct asoc_simple_dai *simple_dai)
+{
+	int ret;
+
+	if (simple_dai->sysclk) {
+		ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk, 0);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_sysclk error\n");
+			return ret;
+		}
+	}
+
+	if (simple_dai->slots) {
+		ret = snd_soc_dai_set_tdm_slot(dai,
+					       simple_dai->tx_slot_mask,
+					       simple_dai->rx_slot_mask,
+					       simple_dai->slots,
+					       simple_dai->slot_width);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_init_dai);
+
+int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link)
+{
+	if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
+		return -EINVAL;
+
+	/* Assumes platform == cpu */
+	if (!dai_link->platform_of_node)
+		dai_link->platform_of_node = dai_link->cpu_of_node;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_dailink);
+
+void asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
+				       int is_single_links)
+{
+	/*
+	 * In soc_bind_dai_link() will check cpu name after
+	 * of_node matching if dai_link has cpu_dai_name.
+	 * but, it will never match if name was created by
+	 * fmt_single_name() remove cpu_dai_name if cpu_args
+	 * was 0. See:
+	 *	fmt_single_name()
+	 *	fmt_multiple_name()
+	 */
+	if (is_single_links)
+		dai_link->cpu_dai_name = NULL;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_cpu);
+
+int asoc_simple_card_clean_reference(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *dai_link;
+	int num_links;
+
+	for (num_links = 0, dai_link = card->dai_link;
+	     num_links < card->num_links;
+	     num_links++, dai_link++) {
+		of_node_put(dai_link->cpu_of_node);
+		of_node_put(dai_link->codec_of_node);
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_clean_reference);
+
+/* Module information */
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
+MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
+MODULE_LICENSE("GPL v2");

sound/soc/generic/simple-card.c

@@ -44,6 +44,8 @@ struct simple_card_data {
 #define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
 #define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
 
+#define DAI	"sound-dai"
+#define CELL	"#sound-dai-cells"
 #define PREFIX	"simple-audio-card,"
 
 #define asoc_simple_card_init_hp(card, sjack, prefix)\
@@ -177,51 +179,19 @@ static struct snd_soc_ops asoc_simple_card_ops = {
 	.hw_params = asoc_simple_card_hw_params,
 };
 
-static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
-				       struct asoc_simple_dai *set)
-{
-	int ret;
-
-	if (set->sysclk) {
-		ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
-		if (ret && ret != -ENOTSUPP) {
-			dev_err(dai->dev, "simple-card: set_sysclk error\n");
-			goto err;
-		}
-	}
-
-	if (set->slots) {
-		ret = snd_soc_dai_set_tdm_slot(dai,
-					       set->tx_slot_mask,
-					       set->rx_slot_mask,
-						set->slots,
-						set->slot_width);
-		if (ret && ret != -ENOTSUPP) {
-			dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
-			goto err;
-		}
-	}
-
-	ret = 0;
-
-err:
-	return ret;
-}
-
 static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct simple_card_data *priv =	snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *codec = rtd->codec_dai;
 	struct snd_soc_dai *cpu = rtd->cpu_dai;
-	struct simple_dai_props *dai_props;
+	struct simple_dai_props *dai_props = &priv->dai_props[rtd->num];
 	int ret;
 
-	dai_props = &priv->dai_props[rtd->num];
+	ret = asoc_simple_card_init_dai(codec, &dai_props->codec_dai);
-	ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
 	if (ret < 0)
 		return ret;
 
-	ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
+	ret = asoc_simple_card_init_dai(cpu, &dai_props->cpu_dai);
 	if (ret < 0)
 		return ret;
 
@@ -236,78 +206,6 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 	return 0;
 }
 
-static int
-asoc_simple_card_sub_parse_of(struct device_node *np,
-			      struct asoc_simple_dai *dai,
-			      struct device_node **p_node,
-			      const char **name,
-			      int *args_count)
-{
-	struct of_phandle_args args;
-	struct clk *clk;
-	u32 val;
-	int ret;
-
-	if (!np)
-		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(np, "sound-dai",
-					 "#sound-dai-cells", 0, &args);
-	if (ret)
-		return ret;
-
-	*p_node = args.np;
-
-	if (args_count)
-		*args_count = args.args_count;
-
-	/* Get dai->name */
-	if (name) {
-		ret = snd_soc_of_get_dai_name(np, name);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (!dai)
-		return 0;
-
-	/* Parse TDM slot */
-	ret = snd_soc_of_parse_tdm_slot(np, &dai->tx_slot_mask,
-					&dai->rx_slot_mask,
-					&dai->slots, &dai->slot_width);
-	if (ret)
-		return ret;
-
-	/*
-	 * Parse dai->sysclk come from "clocks = <&xxx>"
-	 * (if system has common clock)
-	 *  or "system-clock-frequency = <xxx>"
-	 *  or device's module clock.
-	 */
-	if (of_property_read_bool(np, "clocks")) {
-		clk = of_clk_get(np, 0);
-		if (IS_ERR(clk)) {
-			ret = PTR_ERR(clk);
-			return ret;
-		}
-
-		dai->sysclk = clk_get_rate(clk);
-		dai->clk = clk;
-	} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
-		dai->sysclk = val;
-	} else {
-		clk = of_clk_get(args.np, 0);
-		if (!IS_ERR(clk))
-			dai->sysclk = clk_get_rate(clk);
-	}
-
-	return 0;
-}
-
 static int asoc_simple_card_dai_link_of(struct device_node *node,
 					struct simple_card_data *priv,
 					int idx,
@@ -316,12 +214,14 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
 	struct device *dev = simple_priv_to_dev(priv);
 	struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
 	struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
+	struct asoc_simple_dai *cpu_dai = &dai_props->cpu_dai;
+	struct asoc_simple_dai *codec_dai = &dai_props->codec_dai;
 	struct device_node *cpu = NULL;
 	struct device_node *plat = NULL;
 	struct device_node *codec = NULL;
 	char prop[128];
 	char *prefix = "";
-	int ret, cpu_args;
+	int ret, single_cpu;
 	u32 val;
 
 	/* For single DAI link & old style of DT node */
@@ -351,33 +251,44 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
 	if (!of_property_read_u32(node, "mclk-fs", &val))
 		dai_props->mclk_fs = val;
 
-	ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai,
+	ret = asoc_simple_card_parse_cpu(cpu, dai_link,
-					    &dai_link->cpu_of_node,
+					 DAI, CELL, &single_cpu);
-					    &dai_link->cpu_dai_name,
-					    &cpu_args);
 	if (ret < 0)
 		goto dai_link_of_err;
 
-	ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai,
+	ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL);
-					    &dai_link->codec_of_node,
-					    &dai_link->codec_dai_name, NULL);
 	if (ret < 0)
 		goto dai_link_of_err;
 
-	ret = asoc_simple_card_sub_parse_of(plat, NULL,
+	ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL);
-					    &dai_link->platform_of_node,
-					    NULL, NULL);
 	if (ret < 0)
 		goto dai_link_of_err;
 
-	if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
+	ret = snd_soc_of_parse_tdm_slot(cpu,	&cpu_dai->tx_slot_mask,
-		ret = -EINVAL;
+						&cpu_dai->rx_slot_mask,
+						&cpu_dai->slots,
+						&cpu_dai->slot_width);
+	if (ret < 0)
 		goto dai_link_of_err;
-	}
 
-	/* Assumes platform == cpu */
+	ret = snd_soc_of_parse_tdm_slot(codec,	&codec_dai->tx_slot_mask,
-	if (!dai_link->platform_of_node)
+						&codec_dai->rx_slot_mask,
-		dai_link->platform_of_node = dai_link->cpu_of_node;
+						&codec_dai->slots,
+						&codec_dai->slot_width);
+	if (ret < 0)
+		goto dai_link_of_err;
+
+	ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai);
+	if (ret < 0)
+		goto dai_link_of_err;
+
+	ret = asoc_simple_card_parse_clk_codec(codec, dai_link, codec_dai);
+	if (ret < 0)
+		goto dai_link_of_err;
+
+	ret = asoc_simple_card_canonicalize_dailink(dai_link);
+	if (ret < 0)
+		goto dai_link_of_err;
 
 	ret = asoc_simple_card_set_dailink_name(dev, dai_link,
 						"%s-%s",
@@ -398,17 +309,7 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
 		dai_link->codec_dai_name,
 		dai_props->codec_dai.sysclk);
 
-	/*
+	asoc_simple_card_canonicalize_cpu(dai_link, single_cpu);
-	 * In soc_bind_dai_link() will check cpu name after
-	 * of_node matching if dai_link has cpu_dai_name.
-	 * but, it will never match if name was created by
-	 * fmt_single_name() remove cpu_dai_name if cpu_args
-	 * was 0. See:
-	 *	fmt_single_name()
-	 *	fmt_multiple_name()
-	 */
-	if (!cpu_args)
-		dai_link->cpu_dai_name = NULL;
 
 dai_link_of_err:
 	of_node_put(cpu);
@@ -477,21 +378,6 @@ static int asoc_simple_card_parse_of(struct device_node *node,
 	return 0;
 }
 
-/* Decrease the reference count of the device nodes */
-static int asoc_simple_card_unref(struct snd_soc_card *card)
-{
-	struct snd_soc_dai_link *dai_link;
-	int num_links;
-
-	for (num_links = 0, dai_link = card->dai_link;
-	     num_links < card->num_links;
-	     num_links++, dai_link++) {
-		of_node_put(dai_link->cpu_of_node);
-		of_node_put(dai_link->codec_of_node);
-	}
-	return 0;
-}
-
 static int asoc_simple_card_probe(struct platform_device *pdev)
 {
 	struct simple_card_data *priv;
@@ -577,7 +463,7 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
 		return ret;
 
 err:
-	asoc_simple_card_unref(&priv->snd_card);
+	asoc_simple_card_clean_reference(&priv->snd_card);
 	return ret;
 }
 
@@ -589,7 +475,7 @@ static int asoc_simple_card_remove(struct platform_device *pdev)
 	asoc_simple_card_remove_jack(&priv->hp_jack);
 	asoc_simple_card_remove_jack(&priv->mic_jack);
 
-	return asoc_simple_card_unref(card);
+	return asoc_simple_card_clean_reference(card);
 }
 
 static const struct of_device_id asoc_simple_of_match[] = {

sound/soc/sh/rcar/rsrc-card.c

@@ -62,6 +62,9 @@ struct rsrc_card_priv {
 #define rsrc_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
 #define rsrc_priv_to_props(priv, i) ((priv)->dai_props + (i))
 
+#define DAI	"sound-dai"
+#define CELL	"#sound-dai-cells"
+
 static int rsrc_card_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -94,7 +97,6 @@ static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 	struct snd_soc_dai_link *dai_link;
 	struct asoc_simple_dai *dai_props;
 	int num = rtd->num;
-	int ret;
 
 	dai_link	= rsrc_priv_to_link(priv, num);
 	dai_props	= rsrc_priv_to_props(priv, num);
@@ -102,30 +104,7 @@ static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 				rtd->cpu_dai :
 				rtd->codec_dai;
 
-	if (dai_props->sysclk) {
+	return asoc_simple_card_init_dai(dai, dai_props);
-		ret = snd_soc_dai_set_sysclk(dai, 0, dai_props->sysclk, 0);
-		if (ret && ret != -ENOTSUPP) {
-			dev_err(dai->dev, "set_sysclk error\n");
-			goto err;
-		}
-	}
-
-	if (dai_props->slots) {
-		ret = snd_soc_dai_set_tdm_slot(dai,
-					       dai_props->tx_slot_mask,
-					       dai_props->rx_slot_mask,
-					       dai_props->slots,
-					       dai_props->slot_width);
-		if (ret && ret != -ENOTSUPP) {
-			dev_err(dai->dev, "set_tdm_slot error\n");
-			goto err;
-		}
-	}
-
-	ret = 0;
-
-err:
-	return ret;
 }
 
 static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
@@ -155,18 +134,8 @@ static int rsrc_card_parse_links(struct device_node *np,
 	struct device *dev = rsrc_priv_to_dev(priv);
 	struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
 	struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
-	struct of_phandle_args args;
 	int ret;
 
-	/*
-	 * 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(np, "sound-dai",
-					 "#sound-dai-cells", 0, &args);
-	if (ret)
-		return ret;
-
 	/* Parse TDM slot */
 	ret = snd_soc_of_parse_tdm_slot(np,
 					&dai_props->tx_slot_mask,
@@ -177,6 +146,8 @@ static int rsrc_card_parse_links(struct device_node *np,
 		return ret;
 
 	if (is_fe) {
+		int is_single_links = 0;
+
 		/* BE is dummy */
 		dai_link->codec_of_node		= NULL;
 		dai_link->codec_dai_name	= "snd-soc-dummy-dai";
@@ -185,8 +156,13 @@ static int rsrc_card_parse_links(struct device_node *np,
 		/* FE settings */
 		dai_link->dynamic		= 1;
 		dai_link->dpcm_merged_format	= 1;
-		dai_link->cpu_of_node		= args.np;
+
-		ret = snd_soc_of_get_dai_name(np, &dai_link->cpu_dai_name);
+		ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL,
+						 &is_single_links);
+		if (ret)
+			return ret;
+
+		ret = asoc_simple_card_parse_clk_cpu(np, dai_link, dai_props);
 		if (ret < 0)
 			return ret;
 
@@ -196,17 +172,7 @@ static int rsrc_card_parse_links(struct device_node *np,
 		if (ret < 0)
 			return ret;
 
-		/*
+		asoc_simple_card_canonicalize_cpu(dai_link, is_single_links);
-		 * In soc_bind_dai_link() will check cpu name after
-		 * of_node matching if dai_link has cpu_dai_name.
-		 * but, it will never match if name was created by
-		 * fmt_single_name() remove cpu_dai_name if cpu_args
-		 * was 0. See:
-		 *	fmt_single_name()
-		 *	fmt_multiple_name()
-		 */
-		if (!args.args_count)
-			dai_link->cpu_dai_name = NULL;
 	} else {
 		const struct rsrc_card_of_data *of_data;
 
@@ -220,8 +186,12 @@ static int rsrc_card_parse_links(struct device_node *np,
 		/* BE settings */
 		dai_link->no_pcm		= 1;
 		dai_link->be_hw_params_fixup	= rsrc_card_be_hw_params_fixup;
-		dai_link->codec_of_node		= args.np;
+
-		ret = snd_soc_of_get_dai_name(np, &dai_link->codec_dai_name);
+		ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL);
+		if (ret < 0)
+			return ret;
+
+		ret = asoc_simple_card_parse_clk_codec(np, dai_link, dai_props);
 		if (ret < 0)
 			return ret;
 
@@ -243,75 +213,21 @@ static int rsrc_card_parse_links(struct device_node *np,
 		}
 	}
 
-	/* Simple Card assumes platform == cpu */
+	ret = asoc_simple_card_canonicalize_dailink(dai_link);
-	dai_link->platform_of_node	= dai_link->cpu_of_node;
+	if (ret < 0)
+		return ret;
+
 	dai_link->dpcm_playback		= 1;
 	dai_link->dpcm_capture		= 1;
 	dai_link->ops			= &rsrc_card_ops;
 	dai_link->init			= rsrc_card_dai_init;
 
-	return 0;
-}
-
-static int rsrc_card_parse_clk(struct device_node *np,
-			       struct rsrc_card_priv *priv,
-			       int idx, bool is_fe)
-{
-	struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
-	struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
-	struct clk *clk;
-	struct device_node *of_np = is_fe ?	dai_link->cpu_of_node :
-						dai_link->codec_of_node;
-	u32 val;
-
-	/*
-	 * Parse dai->sysclk come from "clocks = <&xxx>"
-	 * (if system has common clock)
-	 *  or "system-clock-frequency = <xxx>"
-	 *  or device's module clock.
-	 */
-	if (of_property_read_bool(np, "clocks")) {
-		clk = of_clk_get(np, 0);
-		if (IS_ERR(clk))
-			return PTR_ERR(clk);
-
-		dai_props->sysclk = clk_get_rate(clk);
-		dai_props->clk = clk;
-	} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
-		dai_props->sysclk = val;
-	} else {
-		clk = of_clk_get(of_np, 0);
-		if (!IS_ERR(clk))
-			dai_props->sysclk = clk_get_rate(clk);
-	}
-
-	return 0;
-}
-
-static int rsrc_card_dai_sub_link_of(struct device_node *node,
-				     struct device_node *np,
-				     struct rsrc_card_priv *priv,
-				     int idx, bool is_fe)
-{
-	struct device *dev = rsrc_priv_to_dev(priv);
-	struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
-	struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
-	int ret;
-
-	ret = rsrc_card_parse_links(np, priv, idx, is_fe);
-	if (ret < 0)
-		return ret;
-
-	ret = rsrc_card_parse_clk(np, priv, idx, is_fe);
-	if (ret < 0)
-		return ret;
-
 	dev_dbg(dev, "\t%s / %04x / %d\n",
 		dai_link->name,
 		dai_link->dai_fmt,
 		dai_props->sysclk);
 
-	return ret;
+	return 0;
 }
 
 static int rsrc_card_dai_link_of(struct device_node *node,
@@ -348,7 +264,7 @@ static int rsrc_card_dai_link_of(struct device_node *node,
 		if (strcmp(np->name, "cpu") == 0)
 			is_fe = true;
 
-		ret = rsrc_card_dai_sub_link_of(node, np, priv, i, is_fe);
+		ret = rsrc_card_parse_links(np, priv, i, is_fe);
 		if (ret < 0)
 			return ret;
 		i++;
@@ -417,21 +333,6 @@ static int rsrc_card_parse_of(struct device_node *node,
 	return 0;
 }
 
-/* Decrease the reference count of the device nodes */
-static int rsrc_card_unref(struct snd_soc_card *card)
-{
-	struct snd_soc_dai_link *dai_link;
-	int num_links;
-
-	for (num_links = 0, dai_link = card->dai_link;
-	     num_links < card->num_links;
-	     num_links++, dai_link++) {
-		of_node_put(dai_link->cpu_of_node);
-		of_node_put(dai_link->codec_of_node);
-	}
-	return 0;
-}
-
 static int rsrc_card_probe(struct platform_device *pdev)
 {
 	struct rsrc_card_priv *priv;
@@ -457,7 +358,7 @@ static int rsrc_card_probe(struct platform_device *pdev)
 	if (ret >= 0)
 		return ret;
 err:
-	rsrc_card_unref(&priv->snd_card);
+	asoc_simple_card_clean_reference(&priv->snd_card);
 
 	return ret;
 }
@@ -466,7 +367,7 @@ static int rsrc_card_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);
 
-	return rsrc_card_unref(card);
+	return asoc_simple_card_clean_reference(card);
 }
 
 static struct platform_driver rsrc_card = {