[PATCH 17/17] ASoC: remove snd_soc_dai_set_tristate()

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

snd_soc_dai_set_tristate() has never been used before.
Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
 include/sound/soc-dai.h |  3 ---
 sound/soc/soc-dai.c     | 19 -------------------
 2 files changed, 22 deletions(-)

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index aab57c19f62b2..eeadb636c9f64 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -191,8 +191,6 @@ int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
 	unsigned int tx_num, const unsigned int *tx_slot,
 	unsigned int rx_num, const unsigned int *rx_slot);
 
-int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
-
 /* Digital Audio Interface mute */
 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
 			     int direction);
@@ -306,7 +304,6 @@ struct snd_soc_dai_ops {
 	int (*get_channel_map)(const struct snd_soc_dai *dai,
 			unsigned int *tx_num, unsigned int *tx_slot,
 			unsigned int *rx_num, unsigned int *rx_slot);
-	int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
 
 	int (*set_stream)(struct snd_soc_dai *dai,
 			  void *stream, int direction);
diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c
index 34ba1a93a4c95..e42b99f12f0b3 100644
--- a/sound/soc/soc-dai.c
+++ b/sound/soc/soc-dai.c
@@ -341,25 +341,6 @@ int snd_soc_dai_get_channel_map(const struct snd_soc_dai *dai,
 }
 EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
 
-/**
- * snd_soc_dai_set_tristate - configure DAI system or master clock.
- * @dai: DAI
- * @tristate: tristate enable
- *
- * Tristates the DAI so that others can use it.
- */
-int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
-{
-	int ret = -EINVAL;
-
-	if (dai->driver->ops &&
-	    dai->driver->ops->set_tristate)
-		ret = dai->driver->ops->set_tristate(dai, tristate);
-
-	return soc_dai_ret(dai, ret);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
-
 /**
  * snd_soc_dai_digital_mute - configure DAI system or master clock.
  * @dai: DAI
-- 
2.43.0