diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c
index 14d1a7193469..9d22c75b9b32 100644
--- a/sound/soc/sh/rcar/adg.c
+++ b/sound/soc/sh/rcar/adg.c
@@ -80,7 +80,7 @@ static int rsnd_adg_set_src_timsel_gen2(struct rsnd_dai *rdai,
 					struct rsnd_dai_stream *io,
 					u32 timsel)
 {
-	int is_play = rsnd_dai_is_play(rdai, io);
+	int is_play = rsnd_io_is_play(io);
 	int id = rsnd_mod_id(mod);
 	int shift = (id % 2) ? 16 : 0;
 	u32 mask, ws;
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index c8111857c9d9..c1f577da41fe 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -494,11 +494,6 @@ static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 	return rsnd_rdai_get(priv, dai->id);
 }
 
-int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io)
-{
-	return &rdai->playback == io;
-}
-
 /*
  *	rsnd_soc_dai functions
  */
diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c
index 77cb00890471..225baa32bf0b 100644
--- a/sound/soc/sh/rcar/dvc.c
+++ b/sound/soc/sh/rcar/dvc.c
@@ -206,11 +206,12 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 {
 	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
 	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+	int is_play = rsnd_io_is_play(io);
 	int ret;
 
 	/* Volume */
 	ret = rsnd_kctrl_new_m(mod, rdai, rtd,
-			rsnd_dai_is_play(rdai, io) ?
+			is_play ?
 			"DVC Out Playback Volume" : "DVC In Capture Volume",
 			rsnd_dvc_volume_update,
 			&dvc->volume, 0x00800000 - 1);
@@ -219,7 +220,7 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 
 	/* Mute */
 	ret = rsnd_kctrl_new_m(mod, rdai, rtd,
-			rsnd_dai_is_play(rdai, io) ?
+			is_play ?
 			"DVC Out Mute Switch" : "DVC In Mute Switch",
 			rsnd_dvc_volume_update,
 			&dvc->mute, 1);
@@ -228,7 +229,7 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 
 	/* Ramp */
 	ret = rsnd_kctrl_new_s(mod, rdai, rtd,
-			rsnd_dai_is_play(rdai, io) ?
+			is_play ?
 			"DVC Out Ramp Switch" : "DVC In Ramp Switch",
 			rsnd_dvc_volume_update,
 			&dvc->ren, 1);
@@ -236,7 +237,7 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 		return ret;
 
 	ret = rsnd_kctrl_new_e(mod, rdai, rtd,
-			rsnd_dai_is_play(rdai, io) ?
+			is_play ?
 			"DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
 			&dvc->rup,
 			rsnd_dvc_volume_update,
@@ -245,7 +246,7 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 		return ret;
 
 	ret = rsnd_kctrl_new_e(mod, rdai, rtd,
-			rsnd_dai_is_play(rdai, io) ?
+			is_play ?
 			"DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
 			&dvc->rdown,
 			rsnd_dvc_volume_update,
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 0b5518259c28..83eb46c35e94 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -292,9 +292,11 @@ struct rsnd_dai_stream {
 #define rsnd_io_to_mod_src(io)	((io)->mod[RSND_MOD_SRC])
 #define rsnd_io_to_mod_dvc(io)	((io)->mod[RSND_MOD_DVC])
 #define rsnd_io_to_rdai(io)	((io)->rdai)
+#define rsnd_io_is_play(io)	(&rsnd_io_to_rdai(io)->playback == io)
 #define rsnd_io_to_runtime(io) ((io)->substream ? \
 				(io)->substream->runtime : NULL)
 
+
 struct rsnd_dai {
 	char name[RSND_DAI_NAME_SIZE];
 	struct rsnd_dai_stream playback;
@@ -317,8 +319,6 @@ struct rsnd_dai {
 
 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id);
 
-int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io);
-
 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt);
 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional);
 
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index cb2dbf3b8569..d4f9cccfff55 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -362,7 +362,7 @@ static int rsnd_src_set_route_gen1(struct rsnd_mod *mod,
 	/*
 	 * SRC_ROUTE_SELECT
 	 */
-	val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
+	val = rsnd_io_is_play(io) ? 0x1 : 0x2;
 	val = val		<< routes[id].shift;
 	mask = routes[id].mask	<< routes[id].shift;
 
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 816178c71a6b..b9d33b985845 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -307,7 +307,7 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
 		cr |= SDTA;
 	if (rdai->sys_delay)
 		cr |= DEL;
-	if (rsnd_dai_is_play(rdai, io))
+	if (rsnd_io_is_play(io))
 		cr |= TRMD;
 
 	/*
@@ -401,7 +401,7 @@ static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
 		 * directly as 32bit data
 		 * see rsnd_ssi_init()
 		 */
-		if (rsnd_dai_is_play(rdai, io))
+		if (rsnd_io_is_play(io))
 			rsnd_mod_write(mod, SSITDR, *buf);
 		else
 			*buf = rsnd_mod_read(mod, SSIRDR);