[alsa-devel] [PATCH 21/35] ASoC: rsnd: add rsnd_get_adinr_chan()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

Current rsnd driver has rsnd_get_adinr_bit() to get bit settings for
ADINR (= Audio Information Register) of SSIU/SRC/DVC.
This patch adds rsnd_get_adinr_chan() to get channel settings for
ADINR (= Audio Information Register) of CTU/MIX.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym at renesas.com>
---
 sound/soc/sh/rcar/core.c | 22 ++++++++++++++++++++++
 sound/soc/sh/rcar/rsnd.h |  1 +
 2 files changed, 23 insertions(+)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 0ca6d02..a3637b9 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -227,6 +227,28 @@ u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 	return adinr;
 }
 
+u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	u32 chan = runtime->channels;
+
+	switch (chan) {
+	case 1:
+	case 2:
+	case 4:
+	case 6:
+	case 8:
+		break;
+	default:
+		dev_warn(dev, "not supported channel\n");
+		chan = 0;
+		break;
+	}
+
+	return chan;
+}
 /*
  *	rsnd_dai functions
  */
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 224a4a9..1296b35 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -170,6 +170,7 @@ void rsnd_force_write(struct rsnd_priv *priv, struct rsnd_mod *mod,
 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg,
 		    u32 mask, u32 data);
 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io);
+u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io);
 void rsnd_path_parse(struct rsnd_priv *priv,
 		     struct rsnd_dai_stream *io);
 
-- 
1.9.1