[linux-2.6-block.git] / sound / soc / sh / rcar / scu.c

/*
 * 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_mode_flags(p) ((p)->info->flags)
#define rsnd_scu_convert_rate(p) ((p)->info->convert_rate)

#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)

/*
 *		image of SRC (Sampling Rate Converter)
 *
 * 96kHz   <-> +-----+	48kHz	+-----+	 48kHz	+-------+
 * 48kHz   <-> | SRC | <------>	| SSI |	<----->	| codec |
 * 44.1kHz <-> +-----+		+-----+		+-------+
 * ...
 *
 */

#define rsnd_mod_to_scu(_mod)	\
	container_of((_mod), struct rsnd_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++)

/* Gen1 only */
static int rsnd_src_set_route_if_gen1(struct rsnd_priv *priv,
			      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 */
	};
	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	u32 mask;
	u32 val;
	int shift;
	int id;

	/*
	 * Gen1 only
	 */
	if (!rsnd_is_gen1(priv))
		return 0;

	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);

	/*
	 * 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)
	 */
	if (rsnd_scu_convert_rate(scu))	/* use ADG */
		val = 0;
	else if (8 == id)		/* use SSI WS, but SRU8 is special */
		val = id << shift;
	else				/* use SSI WS */
		val = (id + 1) << shift;

	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;
}

unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv,
				   struct rsnd_mod *ssi_mod,
				   struct snd_pcm_runtime *runtime)
{
	struct rsnd_scu *scu;
	unsigned int rate;

	/* this function is assuming SSI id = SCU id here */
	scu = rsnd_mod_to_scu(rsnd_scu_mod_get(priv, rsnd_mod_id(ssi_mod)));

	/*
	 * 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_convert_rate_ctrl(struct rsnd_priv *priv,
			      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;

	/* 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 */
	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);

	if (convert_rate) {
		u32 fsrate = 0x0400000 / convert_rate * runtime->rate;
		int ret;

		/* Enable the initial value of IFS */
		rsnd_mod_write(mod, SRC_IFSCR, 1);

		/* Set initial value of IFS */
		rsnd_mod_write(mod, SRC_IFSVR, fsrate);

		/* 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, fsrate / 100 * 98);

		if (rsnd_is_gen1(priv)) {
			/* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
		}

		/* set convert clock */
		ret = rsnd_adg_set_convert_clk(priv, mod,
					       runtime->rate,
					       convert_rate);
		if (ret < 0)
			return ret;
	}

	/* Cancel the initialization and operate the SRC function */
	rsnd_mod_write(mod, SRC_SRCIR, 0);

	/* use DMA transfer */
	rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);

	return 0;
}

static int rsnd_scu_transfer_start(struct rsnd_priv *priv,
				   struct rsnd_mod *mod,
				   struct rsnd_dai *rdai,
				   struct rsnd_dai_stream *io)
{
	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	int id = rsnd_mod_id(mod);
	u32 val;

	if (rsnd_is_gen1(priv)) {
		val = (1 << id);
		rsnd_mod_bset(mod, SRC_ROUTE_CTRL, val, val);
	}

	if (rsnd_scu_convert_rate(scu))
		rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);

	return 0;
}

static int rsnd_scu_transfer_stop(struct rsnd_priv *priv,
				  struct rsnd_mod *mod,
				  struct rsnd_dai *rdai,
				  struct rsnd_dai_stream *io)
{
	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	int id = rsnd_mod_id(mod);
	u32 mask;

	if (rsnd_is_gen1(priv)) {
		mask = (1 << id);
		rsnd_mod_bset(mod, SRC_ROUTE_CTRL, mask, 0);
	}

	if (rsnd_scu_convert_rate(scu))
		rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);

	return 0;
}

bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod)
{
	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	u32 flags = rsnd_scu_mode_flags(scu);

	return !!(flags & RSND_SCU_USE_HPBIF);
}

static int rsnd_scu_init(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);
	int ret;

	clk_enable(scu->clk);

	ret = rsnd_src_set_route_if_gen1(priv, mod, rdai, io);
	if (ret < 0)
		return ret;

	ret = rsnd_scu_convert_rate_ctrl(priv, mod, rdai, io);
	if (ret < 0)
		return ret;

	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_priv *priv = rsnd_mod_to_priv(mod);
	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);

	return rsnd_scu_transfer_start(priv, mod, rdai, io);
}

static int rsnd_scu_stop(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);

	rsnd_scu_transfer_stop(priv, mod, rdai, io);

	return 0;
}

static struct rsnd_mod_ops rsnd_scu_ops = {
	.name	= "scu",
	.init	= rsnd_scu_init,
	.quit	= rsnd_scu_quit,
	.start	= rsnd_scu_start,
	.stop	= rsnd_scu_stop,
};

static struct rsnd_mod_ops rsnd_scu_non_ops = {
	.name	= "scu (non)",
};

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 rcar_snd_info *info,
		   struct rsnd_priv *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;
	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->mod))
			ops = &rsnd_scu_ops;

		rsnd_mod_init(priv, &scu->mod, ops, i);

		dev_dbg(dev, "SCU%d probed\n", i);
	}
	dev_dbg(dev, "scu probed\n");

	return 0;
}

void rsnd_scu_remove(struct platform_device *pdev,
		     struct rsnd_priv *priv)
{
}
Commit	Line	Data
07539c1d KM	1	/*
	2	* Renesas R-Car SCU support
	3	*
	4	* Copyright (C) 2013 Renesas Solutions Corp.
	5	* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11	#include "rsnd.h"
	12
	13	struct rsnd_scu {
	14	struct rsnd_scu_platform_info info; / rcar_snd.h */
	15	struct rsnd_mod mod;
ef749400	16	struct clk *clk;
07539c1d KM	17	};
07539c1d KM	18
374a5281	19	#define rsnd_scu_mode_flags(p) ((p)->info->flags)
ef749400 KM	20	#define rsnd_scu_convert_rate(p) ((p)->info->convert_rate)
	21
	22	#define RSND_SCU_NAME_SIZE 16
374a5281 KM	23
	24	/*
	25	* ADINR
	26	*/
	27	#define OTBL_24 (0 << 16)
	28	#define OTBL_22 (2 << 16)
	29	#define OTBL_20 (4 << 16)
	30	#define OTBL_18 (6 << 16)
	31	#define OTBL_16 (8 << 16)
	32
ef749400 KM	33	/*
	34	* image of SRC (Sampling Rate Converter)
	35	*
	36	* 96kHz <-> +-----+ 48kHz +-----+ 48kHz +-------+
	37	* 48kHz <-> \| SRC \| <------> \| SSI \| <-----> \| codec \|
	38	* 44.1kHz <-> +-----+ +-----+ +-------+
	39	* ...
	40	*
	41	*/
374a5281	42
07539c1d KM	43	#define rsnd_mod_to_scu(_mod) \
	44	container_of((_mod), struct rsnd_scu, mod)
	45
	46	#define for_each_rsnd_scu(pos, priv, i) \
	47	for ((i) = 0; \
	48	((i) < rsnd_scu_nr(priv)) && \
	49	((pos) = (struct rsnd_scu *)(priv)->scu + i); \
	50	i++)
	51
2582718c KM	52	/* Gen1 only */
2582718c KM	53	static int rsnd_src_set_route_if_gen1(struct rsnd_priv *priv,
374a5281 KM	54	struct rsnd_mod *mod,
	55	struct rsnd_dai *rdai,
	56	struct rsnd_dai_stream *io)
	57	{
	58	struct scu_route_config {
	59	u32 mask;
	60	int shift;
	61	} routes[] = {
	62	{ 0xF, 0, }, /* 0 */
	63	{ 0xF, 4, }, /* 1 */
	64	{ 0xF, 8, }, /* 2 */
	65	{ 0x7, 12, }, /* 3 */
	66	{ 0x7, 16, }, /* 4 */
	67	{ 0x7, 20, }, /* 5 */
	68	{ 0x7, 24, }, /* 6 */
	69	{ 0x3, 28, }, /* 7 */
	70	{ 0x3, 30, }, /* 8 */
	71	};
ef749400	72	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
374a5281 KM	73	u32 mask;
	74	u32 val;
	75	int shift;
	76	int id;
	77
	78	/*
	79	* Gen1 only
	80	*/
	81	if (!rsnd_is_gen1(priv))
	82	return 0;
	83
	84	id = rsnd_mod_id(mod);
b5f3d7af	85	if (id < 0 \|\| id >= ARRAY_SIZE(routes))
374a5281 KM	86	return -EIO;
	87
	88	/*
	89	* SRC_ROUTE_SELECT
	90	*/
	91	val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
	92	val = val << routes[id].shift;
	93	mask = routes[id].mask << routes[id].shift;
	94
	95	rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
	96
	97	/*
	98	* SRC_TIMING_SELECT
	99	*/
	100	shift = (id % 4) * 8;
	101	mask = 0x1F << shift;
ef749400 KM	102
	103	/*
	104	* ADG is used as source clock if SRC was used,
	105	* then, SSI WS is used as destination clock.
	106	* SSI WS is used as source clock if SRC is not used
	107	* (when playback, source/destination become reverse when capture)
	108	*/
	109	if (rsnd_scu_convert_rate(scu)) /* use ADG */
	110	val = 0;
	111	else if (8 == id) /* use SSI WS, but SRU8 is special */
374a5281	112	val = id << shift;
ef749400	113	else /* use SSI WS */
374a5281 KM	114	val = (id + 1) << shift;
	115
	116	switch (id / 4) {
	117	case 0:
	118	rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
	119	break;
	120	case 1:
	121	rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
	122	break;
	123	case 2:
	124	rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
	125	break;
	126	}
	127
	128	return 0;
	129	}
	130
ef749400 KM	131	unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv,
	132	struct rsnd_mod *ssi_mod,
	133	struct snd_pcm_runtime *runtime)
374a5281	134	{
ef749400 KM	135	struct rsnd_scu *scu;
ef749400 KM	136	unsigned int rate;
374a5281	137
ef749400 KM	138	/* this function is assuming SSI id = SCU id here */
ef749400 KM	139	scu = rsnd_mod_to_scu(rsnd_scu_mod_get(priv, rsnd_mod_id(ssi_mod)));
374a5281	140
ef749400 KM	141	/*
	142	* return convert rate if SRC is used,
	143	* otherwise, return runtime->rate as usual
	144	*/
	145	rate = rsnd_scu_convert_rate(scu);
	146	if (!rate)
	147	rate = runtime->rate;
	148
	149	return rate;
374a5281 KM	150	}
374a5281 KM	151
ef749400	152	static int rsnd_scu_convert_rate_ctrl(struct rsnd_priv *priv,
374a5281 KM	153	struct rsnd_mod *mod,
	154	struct rsnd_dai *rdai,
	155	struct rsnd_dai_stream *io)
	156	{
	157	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
ef749400 KM	158	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
ef749400 KM	159	u32 convert_rate = rsnd_scu_convert_rate(scu);
374a5281 KM	160	u32 adinr = runtime->channels;
374a5281 KM	161
ef749400 KM	162	/* set/clear soft reset */
	163	rsnd_mod_write(mod, SRC_SWRSR, 0);
	164	rsnd_mod_write(mod, SRC_SWRSR, 1);
	165
	166	/* Initialize the operation of the SRC internal circuits */
	167	rsnd_mod_write(mod, SRC_SRCIR, 1);
	168
	169	/* Set channel number and output bit length */
374a5281 KM	170	switch (runtime->sample_bits) {
	171	case 16:
	172	adinr \|= OTBL_16;
	173	break;
	174	case 32:
	175	adinr \|= OTBL_24;
	176	break;
	177	default:
	178	return -EIO;
	179	}
690ef81e	180	rsnd_mod_write(mod, SRC_ADINR, adinr);
374a5281	181
ef749400 KM	182	if (convert_rate) {
	183	u32 fsrate = 0x0400000 / convert_rate * runtime->rate;
	184	int ret;
	185
	186	/* Enable the initial value of IFS */
	187	rsnd_mod_write(mod, SRC_IFSCR, 1);
	188
	189	/* Set initial value of IFS */
	190	rsnd_mod_write(mod, SRC_IFSVR, fsrate);
	191
	192	/* Select SRC mode (fixed value) */
	193	rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
	194
	195	/* Set the restriction value of the FS ratio (98%) */
	196	rsnd_mod_write(mod, SRC_MNFSR, fsrate / 100 * 98);
	197
	198	if (rsnd_is_gen1(priv)) {
	199	/* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
	200	}
374a5281	201
ef749400 KM	202	/* set convert clock */
	203	ret = rsnd_adg_set_convert_clk(priv, mod,
	204	runtime->rate,
	205	convert_rate);
	206	if (ret < 0)
	207	return ret;
	208	}
	209
	210	/* Cancel the initialization and operate the SRC function */
	211	rsnd_mod_write(mod, SRC_SRCIR, 0);
	212
	213	/* use DMA transfer */
0290d2a4	214	rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
ef749400	215
374a5281 KM	216	return 0;
	217	}
	218
af8a4788 KM	219	static int rsnd_scu_transfer_start(struct rsnd_priv *priv,
	220	struct rsnd_mod *mod,
	221	struct rsnd_dai *rdai,
	222	struct rsnd_dai_stream *io)
	223	{
ef749400	224	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
af8a4788 KM	225	int id = rsnd_mod_id(mod);
	226	u32 val;
	227
	228	if (rsnd_is_gen1(priv)) {
	229	val = (1 << id);
	230	rsnd_mod_bset(mod, SRC_ROUTE_CTRL, val, val);
	231	}
	232
ef749400 KM	233	if (rsnd_scu_convert_rate(scu))
	234	rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
	235
	236	return 0;
	237	}
	238
	239	static int rsnd_scu_transfer_stop(struct rsnd_priv *priv,
	240	struct rsnd_mod *mod,
	241	struct rsnd_dai *rdai,
	242	struct rsnd_dai_stream *io)
	243	{
	244	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	245	int id = rsnd_mod_id(mod);
	246	u32 mask;
	247
	248	if (rsnd_is_gen1(priv)) {
	249	mask = (1 << id);
	250	rsnd_mod_bset(mod, SRC_ROUTE_CTRL, mask, 0);
	251	}
	252
	253	if (rsnd_scu_convert_rate(scu))
	254	rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);
374a5281 KM	255
	256	return 0;
	257	}
	258
cdcfcac9 KM	259	bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod)
	260	{
	261	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	262	u32 flags = rsnd_scu_mode_flags(scu);
	263
	264	return !!(flags & RSND_SCU_USE_HPBIF);
	265	}
	266
a204d90c	267	static int rsnd_scu_init(struct rsnd_mod *mod,
07539c1d KM	268	struct rsnd_dai *rdai,
	269	struct rsnd_dai_stream *io)
	270	{
	271	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
ef749400	272	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
374a5281 KM	273	int ret;
374a5281 KM	274
ef749400 KM	275	clk_enable(scu->clk);
ef749400 KM	276
2582718c	277	ret = rsnd_src_set_route_if_gen1(priv, mod, rdai, io);
374a5281 KM	278	if (ret < 0)
	279	return ret;
	280
ef749400	281	ret = rsnd_scu_convert_rate_ctrl(priv, mod, rdai, io);
374a5281 KM	282	if (ret < 0)
374a5281 KM	283	return ret;
07539c1d	284
a204d90c KM	285	return 0;
	286	}
	287
	288	static int rsnd_scu_quit(struct rsnd_mod *mod,
	289	struct rsnd_dai *rdai,
	290	struct rsnd_dai_stream *io)
	291	{
	292	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	293
	294	clk_disable(scu->clk);
374a5281	295
07539c1d KM	296	return 0;
	297	}
	298
a204d90c KM	299	static int rsnd_scu_start(struct rsnd_mod *mod,
	300	struct rsnd_dai *rdai,
	301	struct rsnd_dai_stream *io)
	302	{
	303	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	304	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	305
	306	return rsnd_scu_transfer_start(priv, mod, rdai, io);
	307	}
	308
ef749400 KM	309	static int rsnd_scu_stop(struct rsnd_mod *mod,
	310	struct rsnd_dai *rdai,
	311	struct rsnd_dai_stream *io)
	312	{
	313	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	314	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	315
ef749400 KM	316	rsnd_scu_transfer_stop(priv, mod, rdai, io);
ef749400 KM	317
ef749400 KM	318	return 0;
	319	}
	320
07539c1d KM	321	static struct rsnd_mod_ops rsnd_scu_ops = {
07539c1d KM	322	.name = "scu",
a204d90c KM	323	.init = rsnd_scu_init,
a204d90c KM	324	.quit = rsnd_scu_quit,
07539c1d	325	.start = rsnd_scu_start,
ef749400	326	.stop = rsnd_scu_stop,
07539c1d KM	327	};
07539c1d KM	328
013f38fe KM	329	static struct rsnd_mod_ops rsnd_scu_non_ops = {
	330	.name = "scu (non)",
	331	};
	332
07539c1d KM	333	struct rsnd_mod rsnd_scu_mod_get(struct rsnd_priv priv, int id)
07539c1d KM	334	{
8b14719b TI	335	if (WARN_ON(id < 0 \|\| id >= rsnd_scu_nr(priv)))
8b14719b TI	336	id = 0;
07539c1d KM	337
	338	return &((struct rsnd_scu *)(priv->scu) + id)->mod;
	339	}
	340
	341	int rsnd_scu_probe(struct platform_device *pdev,
	342	struct rcar_snd_info *info,
	343	struct rsnd_priv *priv)
	344	{
	345	struct device *dev = rsnd_priv_to_dev(priv);
	346	struct rsnd_scu *scu;
013f38fe	347	struct rsnd_mod_ops *ops;
ef749400 KM	348	struct clk *clk;
ef749400 KM	349	char name[RSND_SCU_NAME_SIZE];
07539c1d KM	350	int i, nr;
	351
	352	/*
	353	* init SCU
	354	*/
	355	nr = info->scu_info_nr;
	356	scu = devm_kzalloc(dev, sizeof(scu) nr, GFP_KERNEL);
	357	if (!scu) {
	358	dev_err(dev, "SCU allocate failed\n");
	359	return -ENOMEM;
	360	}
	361
	362	priv->scu_nr = nr;
	363	priv->scu = scu;
	364
	365	for_each_rsnd_scu(scu, priv, i) {
ef749400 KM	366	snprintf(name, RSND_SCU_NAME_SIZE, "scu.%d", i);
	367
	368	clk = devm_clk_get(dev, name);
	369	if (IS_ERR(clk))
	370	return PTR_ERR(clk);
	371
07539c1d	372	scu->info = &info->scu_info[i];
ef749400	373	scu->clk = clk;
07539c1d	374
013f38fe KM	375	ops = &rsnd_scu_non_ops;
	376	if (rsnd_scu_hpbif_is_enable(&scu->mod))
	377	ops = &rsnd_scu_ops;
	378
	379	rsnd_mod_init(priv, &scu->mod, ops, i);
	380
374a5281 KM	381	dev_dbg(dev, "SCU%d probed\n", i);
374a5281 KM	382	}
07539c1d KM	383	dev_dbg(dev, "scu probed\n");
	384
	385	return 0;
	386	}
	387
	388	void rsnd_scu_remove(struct platform_device *pdev,
	389	struct rsnd_priv *priv)
	390	{
	391	}