ASoC: rsnd: rename scu to src

R-Car sound has SCU unit which has SRC/CTU/MIX/DVC,
and current rsnd driver has scu.c and scu module.
Current scu.c has SRC support only.
My first concept was control these feature on scu.c
but, it become difficult and un-understandable now.
This patch rename scu to src

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

1 files changed, 0 insertions, 682 deletions

diff --git a/sound/soc/sh/rcar/scu.c b/sound/soc/sh/rcar/scu.c
deleted file mode 100644
index 3526a5c2f608..000000000000
--- a/sound/soc/sh/rcar/scu.c
+++ /dev/null
@@ -1,682 +0,0 @@
-/*
- * Renesas R-Car SCU support
- *
- * Copyright (C) 2013 Renesas Solutions Corp.
- * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include "rsnd.h"
-
-struct rsnd_scu {
-	struct rsnd_scu_platform_info *info; /* rcar_snd.h */
-	struct rsnd_mod mod;
-	struct clk *clk;
-};
-
-#define RSND_SCU_NAME_SIZE 16
-
-/*
- * ADINR
- */
-#define OTBL_24		(0 << 16)
-#define OTBL_22		(2 << 16)
-#define OTBL_20		(4 << 16)
-#define OTBL_18		(6 << 16)
-#define OTBL_16		(8 << 16)
-
-#define rsnd_scu_mode_flags(p) ((p)->info->flags)
-#define rsnd_scu_convert_rate(p) ((p)->info->convert_rate)
-#define rsnd_mod_to_scu(_mod)				\
-	container_of((_mod), struct rsnd_scu, mod)
-#define rsnd_scu_hpbif_is_enable(scu)	\
-	(rsnd_scu_mode_flags(scu) & RSND_SCU_USE_HPBIF)
-#define rsnd_scu_dma_available(scu) \
-	rsnd_dma_available(rsnd_mod_to_dma(&(scu)->mod))
-
-#define for_each_rsnd_scu(pos, priv, i)				\
-	for ((i) = 0;						\
-	     ((i) < rsnd_scu_nr(priv)) &&			\
-	     ((pos) = (struct rsnd_scu *)(priv)->scu + i);	\
-	     i++)
-
-
-/*
- *		image of SRC (Sampling Rate Converter)
- *
- * 96kHz   <-> +-----+	48kHz	+-----+	 48kHz	+-------+
- * 48kHz   <-> | SRC | <------>	| SSI |	<----->	| codec |
- * 44.1kHz <-> +-----+		+-----+		+-------+
- * ...
- *
- */
-
-/*
- * scu.c is caring...
- *
- * Gen1
- *
- * [mem] -> [SRU] -> [SSI]
- *        |--------|
- *
- * Gen2
- *
- * [mem] -> [SCU] -> [SSIU] -> [SSI]
- *        |-----------------|
- */
-
-/*
- *	How to use SRC bypass mode for debugging
- *
- * SRC has bypass mode, and it is useful for debugging.
- * In Gen2 case,
- * SRCm_MODE controls whether SRC is used or not
- * SSI_MODE0 controls whether SSIU which receives SRC data
- * is used or not.
- * Both SRCm_MODE/SSI_MODE0 settings are needed if you use SRC,
- * but SRC bypass mode needs SSI_MODE0 only.
- *
- * This driver request
- * struct rsnd_scu_platform_info {
- *	u32 flags;
- *	u32 convert_rate;
- * }
- *
- * rsnd_scu_hpbif_is_enable() will be true
- * if flags had RSND_SCU_USE_HPBIF,
- * and it controls whether SSIU is used or not.
- *
- * rsnd_scu_convert_rate() indicates
- * above convert_rate, and it controls
- * whether SRC is used or not.
- *
- * ex) doesn't use SRC
- * struct rsnd_scu_platform_info info = {
- *	.flags = 0,
- *	.convert_rate = 0,
- * };
- *
- * ex) uses SRC
- * struct rsnd_scu_platform_info info = {
- *	.flags = RSND_SCU_USE_HPBIF,
- *	.convert_rate = 48000,
- * };
- *
- * ex) uses SRC bypass mode
- * struct rsnd_scu_platform_info info = {
- *	.flags = RSND_SCU_USE_HPBIF,
- *	.convert_rate = 0,
- * };
- *
- */
-
-/*
- *		Gen1/Gen2 common functions
- */
-int rsnd_scu_ssi_mode_init(struct rsnd_mod *ssi_mod,
-			   struct rsnd_dai *rdai,
-			   struct rsnd_dai_stream *io)
-{
-	struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
-	struct rsnd_mod *scu_mod = rsnd_io_to_mod_scu(io);
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
-	int ssi_id = rsnd_mod_id(ssi_mod);
-	int has_scu = 0;
-
-	/*
-	 * SSI_MODE0
-	 */
-	if (info->dai_info) {
-		has_scu = !!scu_mod;
-	} else {
-		struct rsnd_scu *scu = rsnd_mod_to_scu(scu_mod);
-		has_scu = rsnd_scu_hpbif_is_enable(scu);
-	}
-
-	rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id),
-		      has_scu ? 0 : (1 << ssi_id));
-
-	/*
-	 * SSI_MODE1
-	 */
-	if (rsnd_ssi_is_pin_sharing(ssi_mod)) {
-		int shift = -1;
-		switch (ssi_id) {
-		case 1:
-			shift = 0;
-			break;
-		case 2:
-			shift = 2;
-			break;
-		case 4:
-			shift = 16;
-			break;
-		}
-
-		if (shift >= 0)
-			rsnd_mod_bset(ssi_mod, SSI_MODE1,
-				      0x3 << shift,
-				      rsnd_dai_is_clk_master(rdai) ?
-				      0x2 << shift : 0x1 << shift);
-	}
-
-	return 0;
-}
-
-int rsnd_scu_enable_ssi_irq(struct rsnd_mod *ssi_mod,
-			    struct rsnd_dai *rdai,
-			    struct rsnd_dai_stream *io)
-{
-	struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
-
-	/* enable PIO interrupt if Gen2 */
-	if (rsnd_is_gen2(priv))
-		rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0f000000);
-
-	return 0;
-}
-
-unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv,
-				   struct rsnd_dai_stream *io,
-				   struct snd_pcm_runtime *runtime)
-{
-	struct rsnd_scu *scu;
-	unsigned int rate;
-
-	scu = rsnd_mod_to_scu(rsnd_io_to_mod_scu(io));
-
-	/*
-	 * return convert rate if SRC is used,
-	 * otherwise, return runtime->rate as usual
-	 */
-	rate = rsnd_scu_convert_rate(scu);
-	if (!rate)
-		rate = runtime->rate;
-
-	return rate;
-}
-
-static int rsnd_scu_set_convert_rate(struct rsnd_mod *mod,
-				     struct rsnd_dai *rdai,
-				     struct rsnd_dai_stream *io)
-{
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-	u32 convert_rate = rsnd_scu_convert_rate(scu);
-	u32 adinr = runtime->channels;
-	u32 fsrate = 0;
-
-	if (convert_rate)
-		fsrate = 0x0400000 / convert_rate * runtime->rate;
-
-	/* set/clear soft reset */
-	rsnd_mod_write(mod, SRC_SWRSR, 0);
-	rsnd_mod_write(mod, SRC_SWRSR, 1);
-
-	/*
-	 * Initialize the operation of the SRC internal circuits
-	 * see rsnd_scu_start()
-	 */
-	rsnd_mod_write(mod, SRC_SRCIR, 1);
-
-	/* Set channel number and output bit length */
-	switch (runtime->sample_bits) {
-	case 16:
-		adinr |= OTBL_16;
-		break;
-	case 32:
-		adinr |= OTBL_24;
-		break;
-	default:
-		return -EIO;
-	}
-	rsnd_mod_write(mod, SRC_ADINR, adinr);
-
-	/* 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_scu_init(struct rsnd_mod *mod,
-			 struct rsnd_dai *rdai,
-			 struct rsnd_dai_stream *io)
-{
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
-	clk_enable(scu->clk);
-
-	return 0;
-}
-
-static int rsnd_scu_quit(struct rsnd_mod *mod,
-			 struct rsnd_dai *rdai,
-			 struct rsnd_dai_stream *io)
-{
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
-	clk_disable(scu->clk);
-
-	return 0;
-}
-
-static int rsnd_scu_start(struct rsnd_mod *mod,
-			  struct rsnd_dai *rdai,
-			  struct rsnd_dai_stream *io)
-{
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
-	/*
-	 * Cancel the initialization and operate the SRC function
-	 * see rsnd_scu_set_convert_rate()
-	 */
-	rsnd_mod_write(mod, SRC_SRCIR, 0);
-
-	if (rsnd_scu_convert_rate(scu))
-		rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
-
-	return 0;
-}
-
-
-static int rsnd_scu_stop(struct rsnd_mod *mod,
-			 struct rsnd_dai *rdai,
-			 struct rsnd_dai_stream *io)
-{
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
-	if (rsnd_scu_convert_rate(scu))
-		rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);
-
-	return 0;
-}
-
-static struct rsnd_mod_ops rsnd_scu_non_ops = {
-	.name	= "scu (non)",
-};
-
-/*
- *		Gen1 functions
- */
-static int rsnd_src_set_route_gen1(struct rsnd_mod *mod,
-				   struct rsnd_dai *rdai,
-				   struct rsnd_dai_stream *io)
-{
-	struct scu_route_config {
-		u32 mask;
-		int shift;
-	} routes[] = {
-		{ 0xF,  0, }, /* 0 */
-		{ 0xF,  4, }, /* 1 */
-		{ 0xF,  8, }, /* 2 */
-		{ 0x7, 12, }, /* 3 */
-		{ 0x7, 16, }, /* 4 */
-		{ 0x7, 20, }, /* 5 */
-		{ 0x7, 24, }, /* 6 */
-		{ 0x3, 28, }, /* 7 */
-		{ 0x3, 30, }, /* 8 */
-	};
-	u32 mask;
-	u32 val;
-	int id;
-
-	id = rsnd_mod_id(mod);
-	if (id < 0 || id >= ARRAY_SIZE(routes))
-		return -EIO;
-
-	/*
-	 * SRC_ROUTE_SELECT
-	 */
-	val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
-	val = val		<< routes[id].shift;
-	mask = routes[id].mask	<< routes[id].shift;
-
-	rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
-
-	return 0;
-}
-
-static int rsnd_scu_set_convert_timing_gen1(struct rsnd_mod *mod,
-					    struct rsnd_dai *rdai,
-					    struct rsnd_dai_stream *io)
-{
-	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	u32 convert_rate = rsnd_scu_convert_rate(scu);
-	u32 mask;
-	u32 val;
-	int shift;
-	int id = rsnd_mod_id(mod);
-	int ret;
-
-	/*
-	 * SRC_TIMING_SELECT
-	 */
-	shift	= (id % 4) * 8;
-	mask	= 0x1F << shift;
-
-	/*
-	 * ADG is used as source clock if SRC was used,
-	 * then, SSI WS is used as destination clock.
-	 * SSI WS is used as source clock if SRC is not used
-	 * (when playback, source/destination become reverse when capture)
-	 */
-	ret = 0;
-	if (convert_rate) {
-		/* use ADG */
-		val = 0;
-		ret = rsnd_adg_set_convert_clk_gen1(priv, mod,
-						    runtime->rate,
-						    convert_rate);
-	} else if (8 == id) {
-		/* use SSI WS, but SRU8 is special */
-		val = id << shift;
-	} else {
-		/* use SSI WS */
-		val = (id + 1) << shift;
-	}
-
-	if (ret < 0)
-		return ret;
-
-	switch (id / 4) {
-	case 0:
-		rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
-		break;
-	case 1:
-		rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
-		break;
-	case 2:
-		rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
-		break;
-	}
-
-	return 0;
-}
-
-static int rsnd_scu_set_convert_rate_gen1(struct rsnd_mod *mod,
-					  struct rsnd_dai *rdai,
-					  struct rsnd_dai_stream *io)
-{
-	int ret;
-
-	ret = rsnd_scu_set_convert_rate(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	/* Select SRC mode (fixed value) */
-	rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
-
-	/* Set the restriction value of the FS ratio (98%) */
-	rsnd_mod_write(mod, SRC_MNFSR,
-		       rsnd_mod_read(mod, SRC_IFSVR) / 100 * 98);
-
-	/* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
-
-	return 0;
-}
-
-static int rsnd_scu_init_gen1(struct rsnd_mod *mod,
-			      struct rsnd_dai *rdai,
-			      struct rsnd_dai_stream *io)
-{
-	int ret;
-
-	ret = rsnd_scu_init(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_src_set_route_gen1(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_scu_set_convert_rate_gen1(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_scu_set_convert_timing_gen1(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static int rsnd_scu_start_gen1(struct rsnd_mod *mod,
-			       struct rsnd_dai *rdai,
-			       struct rsnd_dai_stream *io)
-{
-	int id = rsnd_mod_id(mod);
-
-	rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id));
-
-	return rsnd_scu_start(mod, rdai, io);
-}
-
-static int rsnd_scu_stop_gen1(struct rsnd_mod *mod,
-			      struct rsnd_dai *rdai,
-			      struct rsnd_dai_stream *io)
-{
-	int id = rsnd_mod_id(mod);
-
-	rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0);
-
-	return rsnd_scu_stop(mod, rdai, io);
-}
-
-static struct rsnd_mod_ops rsnd_scu_gen1_ops = {
-	.name	= "sru (gen1)",
-	.init	= rsnd_scu_init_gen1,
-	.quit	= rsnd_scu_quit,
-	.start	= rsnd_scu_start_gen1,
-	.stop	= rsnd_scu_stop_gen1,
-};
-
-/*
- *		Gen2 functions
- */
-static int rsnd_scu_set_convert_rate_gen2(struct rsnd_mod *mod,
-					  struct rsnd_dai *rdai,
-					  struct rsnd_dai_stream *io)
-{
-	int ret;
-
-	ret = rsnd_scu_set_convert_rate(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	rsnd_mod_write(mod, SSI_BUSIF_ADINR, rsnd_mod_read(mod, SRC_ADINR));
-	rsnd_mod_write(mod, SSI_BUSIF_MODE,  rsnd_mod_read(mod, SRC_BUSIF_MODE));
-
-	rsnd_mod_write(mod, SRC_SRCCR, 0x00011110);
-
-	rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
-	rsnd_mod_write(mod, SRC_BSISR, 0x00100060);
-
-	return 0;
-}
-
-static int rsnd_scu_set_convert_timing_gen2(struct rsnd_mod *mod,
-					    struct rsnd_dai *rdai,
-					    struct rsnd_dai_stream *io)
-{
-	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-	u32 convert_rate = rsnd_scu_convert_rate(scu);
-	int ret;
-
-	if (convert_rate)
-		ret = rsnd_adg_set_convert_clk_gen2(mod, rdai, io,
-						    runtime->rate,
-						    convert_rate);
-	else
-		ret = rsnd_adg_set_convert_timing_gen2(mod, rdai, io);
-
-	return ret;
-}
-
-static int rsnd_scu_probe_gen2(struct rsnd_mod *mod,
-			       struct rsnd_dai *rdai,
-			       struct rsnd_dai_stream *io)
-{
-	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-	struct rsnd_mod *ssi = rsnd_ssi_mod_get(priv, rsnd_mod_id(mod));
-	struct device *dev = rsnd_priv_to_dev(priv);
-	int ret;
-	int is_play;
-
-	if (info->dai_info)
-		is_play = rsnd_info_is_playback(priv, scu);
-	else
-		is_play = rsnd_ssi_is_play(ssi);
-
-	ret = rsnd_dma_init(priv,
-			    rsnd_mod_to_dma(mod),
-			    is_play,
-			    scu->info->dma_id);
-	if (ret < 0)
-		dev_err(dev, "SCU DMA failed\n");
-
-	return ret;
-}
-
-static int rsnd_scu_remove_gen2(struct rsnd_mod *mod,
-				struct rsnd_dai *rdai,
-				struct rsnd_dai_stream *io)
-{
-	rsnd_dma_quit(rsnd_mod_to_priv(mod), rsnd_mod_to_dma(mod));
-
-	return 0;
-}
-
-static int rsnd_scu_init_gen2(struct rsnd_mod *mod,
-			      struct rsnd_dai *rdai,
-			      struct rsnd_dai_stream *io)
-{
-	int ret;
-
-	ret = rsnd_scu_init(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_scu_set_convert_rate_gen2(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	ret = rsnd_scu_set_convert_timing_gen2(mod, rdai, io);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static int rsnd_scu_start_gen2(struct rsnd_mod *mod,
-			       struct rsnd_dai *rdai,
-			       struct rsnd_dai_stream *io)
-{
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
-	rsnd_dma_start(rsnd_mod_to_dma(&scu->mod));
-
-	rsnd_mod_write(mod, SSI_CTRL, 0x1);
-	rsnd_mod_write(mod, SRC_CTRL, 0x11);
-
-	return rsnd_scu_start(mod, rdai, io);
-}
-
-static int rsnd_scu_stop_gen2(struct rsnd_mod *mod,
-			      struct rsnd_dai *rdai,
-			      struct rsnd_dai_stream *io)
-{
-	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
-	rsnd_mod_write(mod, SSI_CTRL, 0);
-	rsnd_mod_write(mod, SRC_CTRL, 0);
-
-	rsnd_dma_stop(rsnd_mod_to_dma(&scu->mod));
-
-	return rsnd_scu_stop(mod, rdai, io);
-}
-
-static struct rsnd_mod_ops rsnd_scu_gen2_ops = {
-	.name	= "scu (gen2)",
-	.probe	= rsnd_scu_probe_gen2,
-	.remove	= rsnd_scu_remove_gen2,
-	.init	= rsnd_scu_init_gen2,
-	.quit	= rsnd_scu_quit,
-	.start	= rsnd_scu_start_gen2,
-	.stop	= rsnd_scu_stop_gen2,
-};
-
-struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id)
-{
-	if (WARN_ON(id < 0 || id >= rsnd_scu_nr(priv)))
-		id = 0;
-
-	return &((struct rsnd_scu *)(priv->scu) + id)->mod;
-}
-
-int rsnd_scu_probe(struct platform_device *pdev,
-		   struct rsnd_priv *priv)
-{
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct rsnd_scu *scu;
-	struct rsnd_mod_ops *ops;
-	struct clk *clk;
-	char name[RSND_SCU_NAME_SIZE];
-	int i, nr;
-
-	/*
-	 * init SCU
-	 */
-	nr	= info->scu_info_nr;
-	if (!nr)
-		return 0;
-
-	scu	= devm_kzalloc(dev, sizeof(*scu) * nr, GFP_KERNEL);
-	if (!scu) {
-		dev_err(dev, "SCU allocate failed\n");
-		return -ENOMEM;
-	}
-
-	priv->scu_nr	= nr;
-	priv->scu	= scu;
-
-	for_each_rsnd_scu(scu, priv, i) {
-		snprintf(name, RSND_SCU_NAME_SIZE, "scu.%d", i);
-
-		clk = devm_clk_get(dev, name);
-		if (IS_ERR(clk))
-			return PTR_ERR(clk);
-
-		scu->info = &info->scu_info[i];
-		scu->clk = clk;
-
-		ops = &rsnd_scu_non_ops;
-		if (rsnd_scu_hpbif_is_enable(scu)) {
-			if (rsnd_is_gen1(priv))
-				ops = &rsnd_scu_gen1_ops;
-			if (rsnd_is_gen2(priv))
-				ops = &rsnd_scu_gen2_ops;
-		}
-
-		rsnd_mod_init(priv, &scu->mod, ops, RSND_MOD_SCU, i);
-
-		dev_dbg(dev, "SCU%d probed\n", i);
-	}
-
-	return 0;
-}