ASoC: rsnd: SRC settings matches to datasheet

Current SRC settings order was rough. Now, Gen1 support was removed.
This patch makes it cleanup and match to datasheet.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 166 insertions, 258 deletions

diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 0978221b2fe1..d081a652f917 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -117,23 +117,12 @@ struct rsnd_src {
  *
  */
 
-/*
- *		Gen1/Gen2 common functions
- */
 static void rsnd_src_soft_reset(struct rsnd_mod *mod)
 {
 	rsnd_mod_write(mod, SRC_SWRSR, 0);
 	rsnd_mod_write(mod, SRC_SWRSR, 1);
 }
 
-
-#define rsnd_src_initialize_lock(mod)	__rsnd_src_initialize_lock(mod, 1)
-#define rsnd_src_initialize_unlock(mod)	__rsnd_src_initialize_lock(mod, 0)
-static void __rsnd_src_initialize_lock(struct rsnd_mod *mod, u32 enable)
-{
-	rsnd_mod_write(mod, SRC_SRCIR, enable);
-}
-
 static struct dma_chan *rsnd_src_dma_req(struct rsnd_dai_stream *io,
 					 struct rsnd_mod *mod)
 {
@@ -192,34 +181,6 @@ unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
 	return rate;
 }
 
-static int rsnd_src_set_convert_rate(struct rsnd_mod *mod,
-				     struct rsnd_dai_stream *io)
-{
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	struct rsnd_src *src = rsnd_mod_to_src(mod);
-	u32 convert_rate = rsnd_src_convert_rate(io, src);
-	u32 fsrate = 0;
-
-	if (convert_rate)
-		fsrate = 0x0400000 / convert_rate * runtime->rate;
-
-	/* Set channel number and output bit length */
-	rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr_bit(mod, io));
-
-	/* Enable the initial value of IFS */
-	if (fsrate) {
-		rsnd_mod_write(mod, SRC_IFSCR, 1);
-
-		/* Set initial value of IFS */
-		rsnd_mod_write(mod, SRC_IFSVR, fsrate);
-	}
-
-	/* use DMA transfer */
-	rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
-
-	return 0;
-}
-
 static int rsnd_src_hw_params(struct rsnd_mod *mod,
 			      struct rsnd_dai_stream *io,
 			      struct snd_pcm_substream *substream,
@@ -256,65 +217,106 @@ static int rsnd_src_hw_params(struct rsnd_mod *mod,
 	return 0;
 }
 
-static int rsnd_src_init(struct rsnd_mod *mod,
-			 struct rsnd_priv *priv)
+static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
+				      struct rsnd_mod *mod)
 {
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 	struct rsnd_src *src = rsnd_mod_to_src(mod);
+	u32 convert_rate = rsnd_src_convert_rate(io, src);
+	u32 ifscr, fsrate, adinr;
+	u32 cr, route;
+	u32 bsdsr, bsisr;
+	uint ratio;
 
-	rsnd_mod_power_on(mod);
-
-	rsnd_src_soft_reset(mod);
-
-	rsnd_src_initialize_lock(mod);
-
-	src->err = 0;
-
-	/* reset sync convert_rate */
-	src->sync.val = 0;
+	if (!runtime)
+		return;
 
-	return 0;
-}
+	/* 6 - 1/6 are very enough ratio for SRC_BSDSR */
+	if (!convert_rate)
+		ratio = 0;
+	else if (convert_rate > runtime->rate)
+		ratio = 100 * convert_rate / runtime->rate;
+	else
+		ratio = 100 * runtime->rate / convert_rate;
 
-static int rsnd_src_quit(struct rsnd_mod *mod,
-			 struct rsnd_dai_stream *io,
-			 struct rsnd_priv *priv)
-{
-	struct rsnd_src *src = rsnd_mod_to_src(mod);
-	struct device *dev = rsnd_priv_to_dev(priv);
+	if (ratio > 600) {
+		dev_err(dev, "FSO/FSI ratio error\n");
+		return;
+	}
 
-	rsnd_mod_power_off(mod);
+	/*
+	 *	SRC_ADINR
+	 */
+	adinr = rsnd_get_adinr_bit(mod, io);
 
-	if (src->err)
-		dev_warn(dev, "%s[%d] under/over flow err = %d\n",
-			 rsnd_mod_name(mod), rsnd_mod_id(mod), src->err);
+	/*
+	 *	SRC_IFSCR / SRC_IFSVR
+	 */
+	ifscr = 0;
+	fsrate = 0;
+	if (convert_rate) {
+		ifscr = 1;
+		fsrate = 0x0400000 / convert_rate * runtime->rate;
+	}
 
-	src->convert_rate = 0;
+	/*
+	 *	SRC_SRCCR / SRC_ROUTE_MODE0
+	 */
+	cr	= 0x00011110;
+	route	= 0x0;
+	if (convert_rate) {
+		route	= 0x1;
 
-	/* reset sync convert_rate */
-	src->sync.val = 0;
+		if (rsnd_enable_sync_convert(src)) {
+			cr |= 0x1;
+			route |= rsnd_io_is_play(io) ?
+				(0x1 << 24) : (0x1 << 25);
+		}
+	}
 
-	return 0;
-}
+	/*
+	 * SRC_BSDSR / SRC_BSISR
+	 */
+	switch (rsnd_mod_id(mod)) {
+	case 5:
+	case 6:
+	case 7:
+	case 8:
+		bsdsr = 0x02400000; /* 6 - 1/6 */
+		bsisr = 0x00100060; /* 6 - 1/6 */
+		break;
+	default:
+		bsdsr = 0x01800000; /* 6 - 1/6 */
+		bsisr = 0x00100060 ;/* 6 - 1/6 */
+		break;
+	}
 
-static int rsnd_src_start(struct rsnd_mod *mod)
-{
-	rsnd_src_initialize_unlock(mod);
+	rsnd_mod_write(mod, SRC_SRCIR, 1);	/* initialize */
+	rsnd_mod_write(mod, SRC_ADINR, adinr);
+	rsnd_mod_write(mod, SRC_IFSCR, ifscr);
+	rsnd_mod_write(mod, SRC_IFSVR, fsrate);
+	rsnd_mod_write(mod, SRC_SRCCR, cr);
+	rsnd_mod_write(mod, SRC_BSDSR, bsdsr);
+	rsnd_mod_write(mod, SRC_BSISR, bsisr);
+	rsnd_mod_write(mod, SRC_SRCIR, 0);	/* cancel initialize */
 
-	return 0;
-}
+	rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);
+	rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
+	rsnd_mod_write(mod, SRC_BUSIF_DALIGN, rsnd_get_dalign(mod, io));
 
-static int rsnd_src_stop(struct rsnd_mod *mod)
-{
-	/* nothing to do */
-	return 0;
+	if (convert_rate)
+		rsnd_adg_set_convert_clk_gen2(mod, io,
+					      runtime->rate,
+					      convert_rate);
+	else
+		rsnd_adg_set_convert_timing_gen2(mod, io);
 }
 
-/*
- *		Gen2 functions
- */
-#define rsnd_src_irq_enable_gen2(mod)  rsnd_src_irq_ctrol_gen2(mod, 1)
-#define rsnd_src_irq_disable_gen2(mod) rsnd_src_irq_ctrol_gen2(mod, 0)
-static void rsnd_src_irq_ctrol_gen2(struct rsnd_mod *mod, int enable)
+#define rsnd_src_irq_enable(mod)  rsnd_src_irq_ctrol(mod, 1)
+#define rsnd_src_irq_disable(mod) rsnd_src_irq_ctrol(mod, 0)
+static void rsnd_src_irq_ctrol(struct rsnd_mod *mod, int enable)
 {
 	struct rsnd_src *src = rsnd_mod_to_src(mod);
 	u32 sys_int_val, int_val, sys_int_mask;
@@ -328,7 +330,7 @@ static void rsnd_src_irq_ctrol_gen2(struct rsnd_mod *mod, int enable)
 	/*
 	 * IRQ is not supported on non-DT
 	 * see
-	 *	rsnd_src_probe_gen2()
+	 *	rsnd_src_probe_()
 	 */
 	if ((irq <= 0) || !enable) {
 		sys_int_val = 0;
@@ -348,7 +350,7 @@ static void rsnd_src_irq_ctrol_gen2(struct rsnd_mod *mod, int enable)
 	rsnd_mod_bset(mod, SCU_SYS_INT_EN1, sys_int_mask, sys_int_val);
 }
 
-static void rsnd_src_error_clear_gen2(struct rsnd_mod *mod)
+static void rsnd_src_error_clear(struct rsnd_mod *mod)
 {
 	u32 val = OUF_SRC(rsnd_mod_id(mod));
 
@@ -356,7 +358,7 @@ static void rsnd_src_error_clear_gen2(struct rsnd_mod *mod)
 	rsnd_mod_bset(mod, SCU_SYS_STATUS1, val, val);
 }
 
-static bool rsnd_src_error_record_gen2(struct rsnd_mod *mod)
+static bool rsnd_src_error_record(struct rsnd_mod *mod)
 {
 	struct rsnd_src *src = rsnd_mod_to_src(mod);
 	u32 val0, val1;
@@ -381,22 +383,18 @@ static bool rsnd_src_error_record_gen2(struct rsnd_mod *mod)
 	}
 
 	/* clear error static */
-	rsnd_src_error_clear_gen2(mod);
+	rsnd_src_error_clear(mod);
 
 	return ret;
 }
 
-static int rsnd_src_start_gen2(struct rsnd_mod *mod,
-			       struct rsnd_dai_stream *io,
-			       struct rsnd_priv *priv)
+static int rsnd_src_start(struct rsnd_mod *mod,
+			  struct rsnd_dai_stream *io,
+			  struct rsnd_priv *priv)
 {
 	struct rsnd_src *src = rsnd_mod_to_src(mod);
 	u32 val;
 
-	val = rsnd_get_dalign(mod, io);
-
-	rsnd_mod_write(mod, SRC_BUSIF_DALIGN, val);
-
 	/*
 	 * WORKAROUND
 	 *
@@ -407,44 +405,74 @@ static int rsnd_src_start_gen2(struct rsnd_mod *mod,
 
 	rsnd_mod_write(mod, SRC_CTRL, val);
 
-	rsnd_src_error_clear_gen2(mod);
-
-	rsnd_src_start(mod);
-
-	rsnd_src_irq_enable_gen2(mod);
-
 	return 0;
 }
 
-static int rsnd_src_stop_gen2(struct rsnd_mod *mod,
-			      struct rsnd_dai_stream *io,
-			      struct rsnd_priv *priv)
+static int rsnd_src_stop(struct rsnd_mod *mod,
+			 struct rsnd_dai_stream *io,
+			 struct rsnd_priv *priv)
 {
-	rsnd_src_irq_disable_gen2(mod);
-
 	/*
 	 * stop SRC output only
-	 * see rsnd_src_quit_gen2
+	 * see rsnd_src_quit
 	 */
 	rsnd_mod_write(mod, SRC_CTRL, 0x01);
 
-	rsnd_src_error_record_gen2(mod);
+	return 0;
+}
+
+static int rsnd_src_init(struct rsnd_mod *mod,
+			 struct rsnd_dai_stream *io,
+			 struct rsnd_priv *priv)
+{
+	struct rsnd_src *src = rsnd_mod_to_src(mod);
 
-	return rsnd_src_stop(mod);
+	rsnd_mod_power_on(mod);
+
+	rsnd_src_soft_reset(mod);
+
+	rsnd_src_set_convert_rate(io, mod);
+
+	rsnd_src_error_clear(mod);
+
+	rsnd_src_irq_enable(mod);
+
+	src->err = 0;
+
+	/* reset sync convert_rate */
+	src->sync.val = 0;
+
+	return 0;
 }
 
-static int rsnd_src_quit_gen2(struct rsnd_mod *mod,
-			      struct rsnd_dai_stream *io,
-			      struct rsnd_priv *priv)
+static int rsnd_src_quit(struct rsnd_mod *mod,
+			 struct rsnd_dai_stream *io,
+			 struct rsnd_priv *priv)
 {
+	struct rsnd_src *src = rsnd_mod_to_src(mod);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	rsnd_src_irq_disable(mod);
+
 	/* stop both out/in */
 	rsnd_mod_write(mod, SRC_CTRL, 0);
 
-	return rsnd_src_quit(mod, io, priv);
+	rsnd_mod_power_off(mod);
+
+	if (src->err)
+		dev_warn(dev, "%s[%d] under/over flow err = %d\n",
+			 rsnd_mod_name(mod), rsnd_mod_id(mod), src->err);
+
+	src->convert_rate = 0;
+
+	/* reset sync convert_rate */
+	src->sync.val = 0;
+
+	return 0;
 }
 
-static void __rsnd_src_interrupt_gen2(struct rsnd_mod *mod,
-				      struct rsnd_dai_stream *io)
+static void __rsnd_src_interrupt(struct rsnd_mod *mod,
+				 struct rsnd_dai_stream *io)
 {
 	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 	struct rsnd_src *src = rsnd_mod_to_src(mod);
@@ -454,119 +482,40 @@ static void __rsnd_src_interrupt_gen2(struct rsnd_mod *mod,
 
 	/* ignore all cases if not working */
 	if (!rsnd_io_is_working(io))
-		goto rsnd_src_interrupt_gen2_out;
+		goto rsnd_src_interrupt_out;
 
-	if (rsnd_src_error_record_gen2(mod)) {
+	if (rsnd_src_error_record(mod)) {
 
 		dev_dbg(dev, "%s[%d] restart\n",
 			rsnd_mod_name(mod), rsnd_mod_id(mod));
 
-		rsnd_src_stop_gen2(mod, io, priv);
-		rsnd_src_start_gen2(mod, io, priv);
+		rsnd_src_stop(mod, io, priv);
+		rsnd_src_start(mod, io, priv);
 	}
 
 	if (src->err > 1024) {
-		rsnd_src_irq_disable_gen2(mod);
+		rsnd_src_irq_disable(mod);
 
 		dev_warn(dev, "no more %s[%d] restart\n",
 			 rsnd_mod_name(mod), rsnd_mod_id(mod));
 	}
 
-rsnd_src_interrupt_gen2_out:
+rsnd_src_interrupt_out:
 	spin_unlock(&priv->lock);
 }
 
-static irqreturn_t rsnd_src_interrupt_gen2(int irq, void *data)
+static irqreturn_t rsnd_src_interrupt(int irq, void *data)
 {
 	struct rsnd_mod *mod = data;
 
-	rsnd_mod_interrupt(mod, __rsnd_src_interrupt_gen2);
+	rsnd_mod_interrupt(mod, __rsnd_src_interrupt);
 
 	return IRQ_HANDLED;
 }
 
-static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod,
-					  struct rsnd_dai_stream *io)
-{
-	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	struct rsnd_src *src = rsnd_mod_to_src(mod);
-	u32 convert_rate = rsnd_src_convert_rate(io, src);
-	u32 cr, route;
-	uint ratio;
-	int ret;
-
-	/* 6 - 1/6 are very enough ratio for SRC_BSDSR */
-	if (!convert_rate)
-		ratio = 0;
-	else if (convert_rate > runtime->rate)
-		ratio = 100 * convert_rate / runtime->rate;
-	else
-		ratio = 100 * runtime->rate / convert_rate;
-
-	if (ratio > 600) {
-		dev_err(dev, "FSO/FSI ratio error\n");
-		return -EINVAL;
-	}
-
-	ret = rsnd_src_set_convert_rate(mod, io);
-	if (ret < 0)
-		return ret;
-
-	cr	= 0x00011110;
-	route	= 0x0;
-	if (convert_rate) {
-		route	= 0x1;
-
-		if (rsnd_enable_sync_convert(src)) {
-			cr |= 0x1;
-			route |= rsnd_io_is_play(io) ?
-				(0x1 << 24) : (0x1 << 25);
-		}
-	}
-
-	rsnd_mod_write(mod, SRC_SRCCR, cr);
-	rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);
-
-	switch (rsnd_mod_id(mod)) {
-	case 5:
-	case 6:
-	case 7:
-	case 8:
-		rsnd_mod_write(mod, SRC_BSDSR, 0x02400000);
-		break;
-	default:
-		rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
-		break;
-	}
-
-	rsnd_mod_write(mod, SRC_BSISR, 0x00100060);
-
-	return 0;
-}
-
-static int rsnd_src_set_convert_timing_gen2(struct rsnd_dai_stream *io,
-					    struct rsnd_mod *mod)
-{
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	struct rsnd_src *src = rsnd_mod_to_src(mod);
-	u32 convert_rate = rsnd_src_convert_rate(io, src);
-	int ret;
-
-	if (convert_rate)
-		ret = rsnd_adg_set_convert_clk_gen2(mod, io,
-						    runtime->rate,
-						    convert_rate);
-	else
-		ret = rsnd_adg_set_convert_timing_gen2(mod, io);
-
-	return ret;
-}
-
-static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
-			       struct rsnd_dai_stream *io,
-			       struct rsnd_priv *priv)
+static int rsnd_src_probe_(struct rsnd_mod *mod,
+			   struct rsnd_dai_stream *io,
+			   struct rsnd_priv *priv)
 {
 	struct rsnd_src *src = rsnd_mod_to_src(mod);
 	struct device *dev = rsnd_priv_to_dev(priv);
@@ -577,10 +526,10 @@ static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
 		/*
 		 * IRQ is not supported on non-DT
 		 * see
-		 *	rsnd_src_irq_enable_gen2()
+		 *	rsnd_src_irq_enable()
 		 */
 		ret = devm_request_irq(dev, irq,
-				       rsnd_src_interrupt_gen2,
+				       rsnd_src_interrupt,
 				       IRQF_SHARED,
 				       dev_name(dev), mod);
 		if (ret)
@@ -594,48 +543,7 @@ static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
 	return ret;
 }
 
-static int rsnd_src_init_gen2(struct rsnd_mod *mod,
-			      struct rsnd_dai_stream *io,
-			      struct rsnd_priv *priv)
-{
-	int ret;
-
-	ret = rsnd_src_init(mod, priv);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_src_set_convert_rate_gen2(mod, io);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_src_set_convert_timing_gen2(io, mod);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static void rsnd_src_reconvert_update(struct rsnd_dai_stream *io,
-				      struct rsnd_mod *mod)
-{
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	struct rsnd_src *src = rsnd_mod_to_src(mod);
-	u32 convert_rate = rsnd_src_convert_rate(io, src);
-	u32 fsrate;
-
-	if (!runtime)
-		return;
-
-	if (!convert_rate)
-		convert_rate = runtime->rate;
-
-	fsrate = 0x0400000 / convert_rate * runtime->rate;
-
-	/* update IFS */
-	rsnd_mod_write(mod, SRC_IFSVR, fsrate);
-}
-
-static int rsnd_src_pcm_new_gen2(struct rsnd_mod *mod,
+static int rsnd_src_pcm_new(struct rsnd_mod *mod,
 			    struct rsnd_dai_stream *io,
 			    struct snd_soc_pcm_runtime *rtd)
 {
@@ -660,7 +568,7 @@ static int rsnd_src_pcm_new_gen2(struct rsnd_mod *mod,
 			       rsnd_io_is_play(io) ?
 			       "SRC Out Rate Switch" :
 			       "SRC In Rate Switch",
-			       rsnd_src_reconvert_update,
+			       rsnd_src_set_convert_rate,
 			       &src->sen, 1);
 	if (ret < 0)
 		return ret;
@@ -669,22 +577,22 @@ static int rsnd_src_pcm_new_gen2(struct rsnd_mod *mod,
 			       rsnd_io_is_play(io) ?
 			       "SRC Out Rate" :
 			       "SRC In Rate",
-			       rsnd_src_reconvert_update,
+			       rsnd_src_set_convert_rate,
 			       &src->sync, 192000);
 
 	return ret;
 }
 
-static struct rsnd_mod_ops rsnd_src_gen2_ops = {
+static struct rsnd_mod_ops rsnd_src_ops = {
 	.name	= SRC_NAME,
 	.dma_req = rsnd_src_dma_req,
-	.probe	= rsnd_src_probe_gen2,
-	.init	= rsnd_src_init_gen2,
-	.quit	= rsnd_src_quit_gen2,
-	.start	= rsnd_src_start_gen2,
-	.stop	= rsnd_src_stop_gen2,
+	.probe	= rsnd_src_probe_,
+	.init	= rsnd_src_init,
+	.quit	= rsnd_src_quit,
+	.start	= rsnd_src_start,
+	.stop	= rsnd_src_stop,
 	.hw_params = rsnd_src_hw_params,
-	.pcm_new = rsnd_src_pcm_new_gen2,
+	.pcm_new = rsnd_src_pcm_new,
 };
 
 struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id)
@@ -781,7 +689,7 @@ int rsnd_src_probe(struct platform_device *pdev,
 		src->info = &info->src_info[i];
 
 		ret = rsnd_mod_init(priv, rsnd_mod_get(src),
-				    &rsnd_src_gen2_ops, clk, RSND_MOD_SRC, i);
+				    &rsnd_src_ops, clk, RSND_MOD_SRC, i);
 		if (ret)
 			return ret;
 	}