ASoC: add snd_soc_get_stream_cpu()

We are using get_stream_cpu() to get CPU stream which cares
Codec2Codec. But it is static function for now, and we want to use it
from other files. This patch makes it global function.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87fs7cj9mf.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1291,6 +1291,7 @@ unsigned int snd_soc_daifmt_parse_clock_provider_raw(struct device_node *np,
 	snd_soc_daifmt_clock_provider_from_bitmap(			\
 		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_dai_id(struct device_node *ep);
 int snd_soc_get_dai_name(const struct of_phandle_args *args,
 			 const char **dai_name);

sound/soc/soc-core.c

@@ -3196,6 +3196,40 @@ unsigned int snd_soc_daifmt_parse_clock_provider_raw(struct device_node *np,
 }
 EXPORT_SYMBOL_GPL(snd_soc_daifmt_parse_clock_provider_raw);
 
+int snd_soc_get_stream_cpu(struct snd_soc_dai_link *dai_link, int stream)
+{
+	/*
+	 * [Normal]
+	 *
+	 * Playback
+	 *	CPU  : SNDRV_PCM_STREAM_PLAYBACK
+	 *	Codec: SNDRV_PCM_STREAM_PLAYBACK
+	 *
+	 * Capture
+	 *	CPU  : SNDRV_PCM_STREAM_CAPTURE
+	 *	Codec: SNDRV_PCM_STREAM_CAPTURE
+	 */
+	if (!dai_link->c2c_params)
+		return stream;
+
+	/*
+	 * [Codec2Codec]
+	 *
+	 * Playback
+	 *	CPU  : SNDRV_PCM_STREAM_CAPTURE
+	 *	Codec: SNDRV_PCM_STREAM_PLAYBACK
+	 *
+	 * Capture
+	 *	CPU  : SNDRV_PCM_STREAM_PLAYBACK
+	 *	Codec: SNDRV_PCM_STREAM_CAPTURE
+	 */
+	if (stream == SNDRV_PCM_STREAM_CAPTURE)
+		return SNDRV_PCM_STREAM_PLAYBACK;
+
+	return SNDRV_PCM_STREAM_CAPTURE;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_stream_cpu);
+
 int snd_soc_get_dai_id(struct device_node *ep)
 {
 	struct snd_soc_component *component;

sound/soc/soc-dapm.c

@@ -4338,39 +4338,6 @@ static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm,
 	snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL);
 }
 
-static int get_stream_cpu(struct snd_soc_dai_link *dai_link, int stream)
-{
-	/*
-	 * [Normal]
-	 *
-	 * Playback
-	 *	CPU  : SNDRV_PCM_STREAM_PLAYBACK
-	 *	Codec: SNDRV_PCM_STREAM_PLAYBACK
-	 *
-	 * Playback
-	 *	CPU  : SNDRV_PCM_STREAM_CAPTURE
-	 *	Codec: SNDRV_PCM_STREAM_CAPTURE
-	 */
-	if (!dai_link->c2c_params)
-		return stream;
-
-	/*
-	 * [Codec2Codec]
-	 *
-	 * Playback
-	 *	CPU  : SNDRV_PCM_STREAM_CAPTURE
-	 *	Codec: SNDRV_PCM_STREAM_PLAYBACK
-	 *
-	 * Capture
-	 *	CPU  : SNDRV_PCM_STREAM_PLAYBACK
-	 *	Codec: SNDRV_PCM_STREAM_CAPTURE
-	 */
-	if (stream == SNDRV_PCM_STREAM_CAPTURE)
-		return SNDRV_PCM_STREAM_PLAYBACK;
-
-	return SNDRV_PCM_STREAM_CAPTURE;
-}
-
 static void dapm_connect_dai_pair(struct snd_soc_card *card,
 				  struct snd_soc_pcm_runtime *rtd,
 				  struct snd_soc_dai *codec_dai,
@@ -4388,7 +4355,7 @@ static void dapm_connect_dai_pair(struct snd_soc_card *card,
 	for_each_pcm_streams(stream) {
 		int stream_cpu, stream_codec;
 
-		stream_cpu	= get_stream_cpu(dai_link, stream);
+		stream_cpu	= snd_soc_get_stream_cpu(dai_link, stream);
 		stream_codec	= stream;
 
 		/* connect BE DAI playback if widgets are valid */

sound/soc/soc-pcm.c

@@ -2781,10 +2781,8 @@ static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd,
 		struct snd_soc_dai *codec_dai;
 
 		/* Adapt stream for codec2codec links */
-		int cpu_capture = dai_link->c2c_params ?
-			SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
-		int cpu_playback = dai_link->c2c_params ?
-			SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+		int cpu_capture  = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_CAPTURE);
+		int cpu_playback = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_PLAYBACK);
 
 		for_each_rtd_codec_dais(rtd, i, codec_dai) {
 			if (dai_link->num_cpus == 1) {