ASoC: rsnd: rename "slots" related variable

Current Renesas sound driver has slots and slots_num in
struct rsnd_dai, but these are very un-understandable naming
(It had named from TDM slots).
In this driver, the "slots" means total usable channels, and
"stot_num" means SSI lane number if Multi SSI was used.
To more understandable code, this patch renames "slots" to
"max_channels", and "slots_num" to "ssi_lane", and replaces related
functions name.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/core.c

@@ -203,27 +203,6 @@ int rsnd_io_is_working(struct rsnd_dai_stream *io)
 	return !!io->substream;
 }
 
-void rsnd_set_slot(struct rsnd_dai *rdai,
-		   int slots, int num)
-{
-	rdai->slots	= slots;
-	rdai->slots_num	= num;
-}
-
-int rsnd_get_slot(struct rsnd_dai_stream *io)
-{
-	struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
-
-	return rdai->slots;
-}
-
-int rsnd_get_slot_num(struct rsnd_dai_stream *io)
-{
-	struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
-
-	return rdai->slots_num;
-}
-
 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
 {
 	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
@@ -248,13 +227,14 @@ int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
 
 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
 {
+	struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 	int chan = rsnd_io_is_play(io) ?
 		rsnd_runtime_channel_after_ctu(io) :
 		rsnd_runtime_channel_original(io);
 
 	/* Use Multi SSI */
 	if (rsnd_runtime_is_ssi_multi(io))
-		chan /= rsnd_get_slot_num(io);
+		chan /= rsnd_rdai_ssi_lane_get(rdai);
 
 	/* TDM Extend Mode needs 8ch */
 	if (chan == 6)
@@ -265,12 +245,13 @@ int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
 
 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
 {
-	int slots = rsnd_get_slot_num(io);
+	struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
+	int lane = rsnd_rdai_ssi_lane_get(rdai);
 	int chan = rsnd_io_is_play(io) ?
 		rsnd_runtime_channel_after_ctu(io) :
 		rsnd_runtime_channel_original(io);
 
-	return (chan >= 6) && (slots > 1);
+	return (chan > 2) && (lane > 1);
 }
 
 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
@@ -549,6 +530,24 @@ static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 	io->mod[type] = NULL;
 }
 
+int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
+			    int max_channels)
+{
+	if (max_channels > 0)
+		rdai->max_channels = max_channels;
+
+	return rdai->max_channels;
+}
+
+int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
+			    int ssi_lane)
+{
+	if (ssi_lane > 0)
+		rdai->ssi_lane = ssi_lane;
+
+	return rdai->ssi_lane;
+}
+
 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 {
 	if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
@@ -726,7 +725,8 @@ static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 	switch (slots) {
 	case 6:
 		/* TDM Extend Mode */
-		rsnd_set_slot(rdai, slots, 1);
+		rsnd_rdai_channels_set(rdai, slots);
+		rsnd_rdai_ssi_lane_set(rdai, 1);
 		break;
 	default:
 		dev_err(dev, "unsupported TDM slots (%d)\n", slots);
@@ -879,7 +879,8 @@ static void __rsnd_dai_probe(struct rsnd_priv *priv,
 
 	rdai->playback.rdai		= rdai;
 	rdai->capture.rdai		= rdai;
-	rsnd_set_slot(rdai, 2, 1); /* default */
+	rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
+	rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
 
 	for (io_i = 0;; io_i++) {
 		playback = of_parse_phandle(dai_np, "playback", io_i);

sound/soc/sh/rcar/dvc.c

@@ -249,8 +249,9 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 			    struct snd_soc_pcm_runtime *rtd)
 {
 	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+	struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 	int is_play = rsnd_io_is_play(io);
-	int slots = rsnd_get_slot(io);
+	int channels = rsnd_rdai_channels_get(rdai);
 	int ret;
 
 	/* Volume */
@@ -259,7 +260,7 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 			"DVC Out Playback Volume" : "DVC In Capture Volume",
 			rsnd_kctrl_accept_anytime,
 			rsnd_dvc_volume_update,
-			&dvc->volume, slots,
+			&dvc->volume, channels,
 			0x00800000 - 1);
 	if (ret < 0)
 		return ret;
@@ -270,7 +271,7 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
 			"DVC Out Mute Switch" : "DVC In Mute Switch",
 			rsnd_kctrl_accept_anytime,
 			rsnd_dvc_volume_update,
-			&dvc->mute,  slots,
+			&dvc->mute, channels,
 			1);
 	if (ret < 0)
 		return ret;

sound/soc/sh/rcar/rsnd.h

@@ -399,11 +399,6 @@ void rsnd_parse_connect_common(struct rsnd_dai *rdai,
 		struct device_node *playback,
 		struct device_node *capture);
 
-void rsnd_set_slot(struct rsnd_dai *rdai,
-		   int slots, int slots_total);
-int rsnd_get_slot(struct rsnd_dai_stream *io);
-int rsnd_get_slot_num(struct rsnd_dai_stream *io);
-
 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io);
 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io);
 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io);
@@ -455,8 +450,8 @@ struct rsnd_dai {
 	struct rsnd_dai_stream capture;
 	struct rsnd_priv *priv;
 
-	int slots;
-	int slots_num;
+	int max_channels;	/* 2ch - 16ch */
+	int ssi_lane;		/* 1lane - 4lane */
 
 	unsigned int clk_master:1;
 	unsigned int bit_clk_inv:1;
@@ -476,6 +471,20 @@ struct rsnd_dai {
 
 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id);
 
+#define rsnd_rdai_channels_set(rdai, max_channels) \
+	rsnd_rdai_channels_ctrl(rdai, max_channels)
+#define rsnd_rdai_channels_get(rdai) \
+	rsnd_rdai_channels_ctrl(rdai, 0)
+int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
+			    int max_channels);
+
+#define rsnd_rdai_ssi_lane_set(rdai, ssi_lane) \
+	rsnd_rdai_ssi_lane_ctrl(rdai, ssi_lane)
+#define rsnd_rdai_ssi_lane_get(rdai) \
+	rsnd_rdai_ssi_lane_ctrl(rdai, 0)
+int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
+			    int ssi_lane);
+
 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io);
 int rsnd_dai_connect(struct rsnd_mod *mod,
 		     struct rsnd_dai_stream *io,

sound/soc/sh/rcar/ssi.c

@@ -897,7 +897,8 @@ static void rsnd_ssi_connect(struct rsnd_mod *mod,
 		type = types[i];
 		if (!rsnd_io_to_mod(io, type)) {
 			rsnd_dai_connect(mod, io, type);
-			rsnd_set_slot(rdai, 2 * (i + 1), (i + 1));
+			rsnd_rdai_channels_set(rdai, (i + 1) * 2);
+			rsnd_rdai_ssi_lane_set(rdai, (i + 1));
 			return;
 		}
 	}