ASoC: simple-card-utils: share asoc_simple_hw_param()

The difference between simple-card / audio-graph are just using
OF graph style, or not. In other words, other things should be same.
This means, simple-card/audio-graph common functions should be
implemented at simple-card-utils, and its own functions should be
implemented at each files.

Current simple-card / audio-graph have almost same functions.
This patch shares asoc_simple_hw_param() between in these 2 drivers.

One note is that only simple-card supports simple_set_clk_rate()
at hw_param from commit e9be4ffd ("ASoC: simple-card: set cpu
dai clk in hw_params").
By this patch, audio-graph has same feature.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/simple_card_utils.h

@@ -86,6 +86,8 @@ int asoc_simple_card_parse_clk(struct device *dev,
 			       struct snd_soc_dai_link_component *dlc);
 int asoc_simple_startup(struct snd_pcm_substream *substream);
 void asoc_simple_shutdown(struct snd_pcm_substream *substream);
+int asoc_simple_hw_params(struct snd_pcm_substream *substream,
+			  struct snd_pcm_hw_params *params);
 
 #define asoc_simple_card_parse_cpu(node, dai_link,				\
 				   list_name, cells_name, is_single_link)	\

sound/soc/generic/audio-graph-card.c

@@ -56,41 +56,10 @@ static const struct snd_soc_dapm_widget graph_dapm_widgets[] = {
 			       SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 };
 
-static int graph_hw_params(struct snd_pcm_substream *substream,
-			   struct snd_pcm_hw_params *params)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_soc_dai *codec_dai = rtd->codec_dai;
-	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
-	struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
-	unsigned int mclk, mclk_fs = 0;
-	int ret = 0;
-
-	if (dai_props->mclk_fs)
-		mclk_fs = dai_props->mclk_fs;
-
-	if (mclk_fs) {
-		mclk = params_rate(params) * mclk_fs;
-		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
-					     SND_SOC_CLOCK_IN);
-		if (ret && ret != -ENOTSUPP)
-			goto err;
-
-		ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
-					     SND_SOC_CLOCK_OUT);
-		if (ret && ret != -ENOTSUPP)
-			goto err;
-	}
-	return 0;
-err:
-	return ret;
-}
-
 static const struct snd_soc_ops graph_ops = {
 	.startup	= asoc_simple_startup,
 	.shutdown	= asoc_simple_shutdown,
-	.hw_params	= graph_hw_params,
+	.hw_params	= asoc_simple_hw_params,
 };
 
 static int graph_dai_init(struct snd_soc_pcm_runtime *rtd)

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

@@ -236,6 +236,63 @@ void asoc_simple_shutdown(struct snd_pcm_substream *substream)
 }
 EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
 
+static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai,
+				    unsigned long rate)
+{
+	if (!simple_dai)
+		return 0;
+
+	if (!simple_dai->clk)
+		return 0;
+
+	if (clk_get_rate(simple_dai->clk) == rate)
+		return 0;
+
+	return clk_set_rate(simple_dai->clk, rate);
+}
+
+int asoc_simple_hw_params(struct snd_pcm_substream *substream,
+			  struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	struct simple_dai_props *dai_props =
+		simple_priv_to_props(priv, rtd->num);
+	unsigned int mclk, mclk_fs = 0;
+	int ret = 0;
+
+	if (dai_props->mclk_fs)
+		mclk_fs = dai_props->mclk_fs;
+
+	if (mclk_fs) {
+		mclk = params_rate(params) * mclk_fs;
+
+		ret = asoc_simple_set_clk_rate(dai_props->codec_dai, mclk);
+		if (ret < 0)
+			return ret;
+
+		ret = asoc_simple_set_clk_rate(dai_props->cpu_dai, mclk);
+		if (ret < 0)
+			return ret;
+
+		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+					     SND_SOC_CLOCK_IN);
+		if (ret && ret != -ENOTSUPP)
+			goto err;
+
+		ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+					     SND_SOC_CLOCK_OUT);
+		if (ret && ret != -ENOTSUPP)
+			goto err;
+	}
+	return 0;
+err:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
+
 int asoc_simple_card_parse_dai(struct device_node *node,
 				    struct snd_soc_dai_link_component *dlc,
 				    struct device_node **dai_of_node,

sound/soc/generic/simple-card.c

@@ -26,66 +26,10 @@ struct link_info {
 #define CELL	"#sound-dai-cells"
 #define PREFIX	"simple-audio-card,"
 
-static int simple_set_clk_rate(struct asoc_simple_dai *simple_dai,
-			       unsigned long rate)
-{
-	if (!simple_dai)
-		return 0;
-
-	if (!simple_dai->clk)
-		return 0;
-
-	if (clk_get_rate(simple_dai->clk) == rate)
-		return 0;
-
-	return clk_set_rate(simple_dai->clk, rate);
-}
-
-static int simple_hw_params(struct snd_pcm_substream *substream,
-			    struct snd_pcm_hw_params *params)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_soc_dai *codec_dai = rtd->codec_dai;
-	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
-	struct simple_dai_props *dai_props =
-		simple_priv_to_props(priv, rtd->num);
-	unsigned int mclk, mclk_fs = 0;
-	int ret = 0;
-
-	if (dai_props->mclk_fs)
-		mclk_fs = dai_props->mclk_fs;
-
-	if (mclk_fs) {
-		mclk = params_rate(params) * mclk_fs;
-
-		ret = simple_set_clk_rate(dai_props->codec_dai, mclk);
-		if (ret < 0)
-			return ret;
-
-		ret = simple_set_clk_rate(dai_props->cpu_dai, mclk);
-		if (ret < 0)
-			return ret;
-
-		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
-					     SND_SOC_CLOCK_IN);
-		if (ret && ret != -ENOTSUPP)
-			goto err;
-
-		ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
-					     SND_SOC_CLOCK_OUT);
-		if (ret && ret != -ENOTSUPP)
-			goto err;
-	}
-	return 0;
-err:
-	return ret;
-}
-
 static const struct snd_soc_ops simple_ops = {
 	.startup	= asoc_simple_startup,
 	.shutdown	= asoc_simple_shutdown,
-	.hw_params	= simple_hw_params,
+	.hw_params	= asoc_simple_hw_params,
 };
 
 static int simple_dai_init(struct snd_soc_pcm_runtime *rtd)