[deliverable/linux.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++)

static int rsnd_scu_ssi_mode_init(struct rsnd_mod *mod,
				  struct rsnd_dai *rdai,
				  struct rsnd_dai_stream *io)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	int id = rsnd_mod_id(mod);

	/*
	 * SSI_MODE0
	 */
	rsnd_mod_bset(mod, SSI_MODE0, (1 << id),
		      rsnd_scu_hpbif_is_enable(mod) ? 0 : (1 << id));

	/*
	 * SSI_MODE1
	 */
	if (rsnd_ssi_is_pin_sharing(rsnd_ssi_mod_get(priv, id))) {
		int shift = -1;
		switch (id) {
		case 1:
			shift = 0;
			break;
		case 2:
			shift = 2;
			break;
		case 4:
			shift = 16;
			break;
		}

		if (shift >= 0)
			rsnd_mod_bset(mod, SSI_MODE1,
				      0x3 << shift,
				      rsnd_dai_is_clk_master(rdai) ?
				      0x2 << shift : 0x1 << shift);
	}

	return 0;
}

/* Gen1 only */
static int rsnd_src_set_route_if_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 */
	};
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	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_mod *mod,
			      struct rsnd_dai *rdai,
			      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 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;
}

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_scu *scu = rsnd_mod_to_scu(mod);
	int ret;

	clk_enable(scu->clk);

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

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

	ret = rsnd_scu_convert_rate_ctrl(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);
	int id = rsnd_mod_id(mod);

	if (rsnd_is_gen1(priv))
		rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id));

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

	if (rsnd_is_gen1(priv))
		rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0);

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

	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)",
	.init	= rsnd_scu_ssi_mode_init,
};

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
7b5ce975 KM	52	static int rsnd_scu_ssi_mode_init(struct rsnd_mod *mod,
	53	struct rsnd_dai *rdai,
	54	struct rsnd_dai_stream *io)
	55	{
	56	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	57	int id = rsnd_mod_id(mod);
	58
	59	/*
	60	* SSI_MODE0
	61	*/
	62	rsnd_mod_bset(mod, SSI_MODE0, (1 << id),
	63	rsnd_scu_hpbif_is_enable(mod) ? 0 : (1 << id));
	64
	65	/*
	66	* SSI_MODE1
	67	*/
	68	if (rsnd_ssi_is_pin_sharing(rsnd_ssi_mod_get(priv, id))) {
	69	int shift = -1;
	70	switch (id) {
	71	case 1:
	72	shift = 0;
	73	break;
	74	case 2:
	75	shift = 2;
	76	break;
	77	case 4:
	78	shift = 16;
	79	break;
	80	}
	81
	82	if (shift >= 0)
	83	rsnd_mod_bset(mod, SSI_MODE1,
	84	0x3 << shift,
	85	rsnd_dai_is_clk_master(rdai) ?
	86	0x2 << shift : 0x1 << shift);
	87	}
	88
	89	return 0;
	90	}
	91
2582718c	92	/* Gen1 only */
47718dc7	93	static int rsnd_src_set_route_if_gen1(
374a5281 KM	94	struct rsnd_mod *mod,
	95	struct rsnd_dai *rdai,
	96	struct rsnd_dai_stream *io)
	97	{
	98	struct scu_route_config {
	99	u32 mask;
	100	int shift;
	101	} routes[] = {
	102	{ 0xF, 0, }, /* 0 */
	103	{ 0xF, 4, }, /* 1 */
	104	{ 0xF, 8, }, /* 2 */
	105	{ 0x7, 12, }, /* 3 */
	106	{ 0x7, 16, }, /* 4 */
	107	{ 0x7, 20, }, /* 5 */
	108	{ 0x7, 24, }, /* 6 */
	109	{ 0x3, 28, }, /* 7 */
	110	{ 0x3, 30, }, /* 8 */
	111	};
47718dc7	112	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
ef749400	113	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
374a5281 KM	114	u32 mask;
	115	u32 val;
	116	int shift;
	117	int id;
	118
	119	/*
	120	* Gen1 only
	121	*/
	122	if (!rsnd_is_gen1(priv))
	123	return 0;
	124
	125	id = rsnd_mod_id(mod);
b5f3d7af	126	if (id < 0 \|\| id >= ARRAY_SIZE(routes))
374a5281 KM	127	return -EIO;
	128
	129	/*
	130	* SRC_ROUTE_SELECT
	131	*/
	132	val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
	133	val = val << routes[id].shift;
	134	mask = routes[id].mask << routes[id].shift;
	135
	136	rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
	137
	138	/*
	139	* SRC_TIMING_SELECT
	140	*/
	141	shift = (id % 4) * 8;
	142	mask = 0x1F << shift;
ef749400 KM	143
	144	/*
	145	* ADG is used as source clock if SRC was used,
	146	* then, SSI WS is used as destination clock.
	147	* SSI WS is used as source clock if SRC is not used
	148	* (when playback, source/destination become reverse when capture)
	149	*/
	150	if (rsnd_scu_convert_rate(scu)) /* use ADG */
	151	val = 0;
	152	else if (8 == id) /* use SSI WS, but SRU8 is special */
374a5281	153	val = id << shift;
ef749400	154	else /* use SSI WS */
374a5281 KM	155	val = (id + 1) << shift;
	156
	157	switch (id / 4) {
	158	case 0:
	159	rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
	160	break;
	161	case 1:
	162	rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
	163	break;
	164	case 2:
	165	rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
	166	break;
	167	}
	168
	169	return 0;
	170	}
	171
ef749400 KM	172	unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv,
	173	struct rsnd_mod *ssi_mod,
	174	struct snd_pcm_runtime *runtime)
374a5281	175	{
ef749400 KM	176	struct rsnd_scu *scu;
ef749400 KM	177	unsigned int rate;
374a5281	178
ef749400 KM	179	/* this function is assuming SSI id = SCU id here */
ef749400 KM	180	scu = rsnd_mod_to_scu(rsnd_scu_mod_get(priv, rsnd_mod_id(ssi_mod)));
374a5281	181
ef749400 KM	182	/*
	183	* return convert rate if SRC is used,
	184	* otherwise, return runtime->rate as usual
	185	*/
	186	rate = rsnd_scu_convert_rate(scu);
	187	if (!rate)
	188	rate = runtime->rate;
	189
	190	return rate;
374a5281 KM	191	}
374a5281 KM	192
47718dc7	193	static int rsnd_scu_convert_rate_ctrl(
374a5281 KM	194	struct rsnd_mod *mod,
	195	struct rsnd_dai *rdai,
	196	struct rsnd_dai_stream *io)
	197	{
47718dc7	198	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
374a5281	199	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
ef749400 KM	200	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
ef749400 KM	201	u32 convert_rate = rsnd_scu_convert_rate(scu);
374a5281 KM	202	u32 adinr = runtime->channels;
374a5281 KM	203
ef749400 KM	204	/* set/clear soft reset */
	205	rsnd_mod_write(mod, SRC_SWRSR, 0);
	206	rsnd_mod_write(mod, SRC_SWRSR, 1);
	207
	208	/* Initialize the operation of the SRC internal circuits */
	209	rsnd_mod_write(mod, SRC_SRCIR, 1);
	210
	211	/* Set channel number and output bit length */
374a5281 KM	212	switch (runtime->sample_bits) {
	213	case 16:
	214	adinr \|= OTBL_16;
	215	break;
	216	case 32:
	217	adinr \|= OTBL_24;
	218	break;
	219	default:
	220	return -EIO;
	221	}
690ef81e	222	rsnd_mod_write(mod, SRC_ADINR, adinr);
374a5281	223
ef749400 KM	224	if (convert_rate) {
	225	u32 fsrate = 0x0400000 / convert_rate * runtime->rate;
	226	int ret;
	227
	228	/* Enable the initial value of IFS */
	229	rsnd_mod_write(mod, SRC_IFSCR, 1);
	230
	231	/* Set initial value of IFS */
	232	rsnd_mod_write(mod, SRC_IFSVR, fsrate);
	233
	234	/* Select SRC mode (fixed value) */
	235	rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
	236
	237	/* Set the restriction value of the FS ratio (98%) */
	238	rsnd_mod_write(mod, SRC_MNFSR, fsrate / 100 * 98);
	239
	240	if (rsnd_is_gen1(priv)) {
	241	/* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
	242	}
374a5281	243
ef749400 KM	244	/* set convert clock */
	245	ret = rsnd_adg_set_convert_clk(priv, mod,
	246	runtime->rate,
	247	convert_rate);
	248	if (ret < 0)
	249	return ret;
	250	}
	251
	252	/* Cancel the initialization and operate the SRC function */
	253	rsnd_mod_write(mod, SRC_SRCIR, 0);
	254
	255	/* use DMA transfer */
0290d2a4	256	rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
ef749400	257
374a5281 KM	258	return 0;
	259	}
	260
cdcfcac9 KM	261	bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod)
	262	{
	263	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	264	u32 flags = rsnd_scu_mode_flags(scu);
	265
	266	return !!(flags & RSND_SCU_USE_HPBIF);
	267	}
	268
a204d90c	269	static int rsnd_scu_init(struct rsnd_mod *mod,
07539c1d KM	270	struct rsnd_dai *rdai,
	271	struct rsnd_dai_stream *io)
	272	{
ef749400	273	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
374a5281 KM	274	int ret;
374a5281 KM	275
ef749400 KM	276	clk_enable(scu->clk);
ef749400 KM	277
7b5ce975 KM	278	ret = rsnd_scu_ssi_mode_init(mod, rdai, io);
	279	if (ret < 0)
	280	return ret;
	281
47718dc7	282	ret = rsnd_src_set_route_if_gen1(mod, rdai, io);
374a5281 KM	283	if (ret < 0)
	284	return ret;
	285
47718dc7	286	ret = rsnd_scu_convert_rate_ctrl(mod, rdai, io);
374a5281 KM	287	if (ret < 0)
374a5281 KM	288	return ret;
07539c1d	289
a204d90c KM	290	return 0;
	291	}
	292
	293	static int rsnd_scu_quit(struct rsnd_mod *mod,
	294	struct rsnd_dai *rdai,
	295	struct rsnd_dai_stream *io)
	296	{
	297	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
	298
	299	clk_disable(scu->clk);
374a5281	300
07539c1d KM	301	return 0;
	302	}
	303
a204d90c KM	304	static int rsnd_scu_start(struct rsnd_mod *mod,
	305	struct rsnd_dai *rdai,
	306	struct rsnd_dai_stream *io)
	307	{
	308	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	309	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
e7ce74ea	310	int id = rsnd_mod_id(mod);
a204d90c	311
e7ce74ea KM	312	if (rsnd_is_gen1(priv))
	313	rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id));
	314
	315	if (rsnd_scu_convert_rate(scu))
	316	rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
	317
	318	return 0;
a204d90c KM	319	}
a204d90c KM	320
ef749400 KM	321	static int rsnd_scu_stop(struct rsnd_mod *mod,
	322	struct rsnd_dai *rdai,
	323	struct rsnd_dai_stream *io)
	324	{
	325	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	326	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
e7ce74ea KM	327	int id = rsnd_mod_id(mod);
	328
	329	if (rsnd_is_gen1(priv))
	330	rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0);
ef749400	331
e7ce74ea KM	332	if (rsnd_scu_convert_rate(scu))
e7ce74ea KM	333	rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);
ef749400	334
ef749400 KM	335	return 0;
	336	}
	337
07539c1d KM	338	static struct rsnd_mod_ops rsnd_scu_ops = {
07539c1d KM	339	.name = "scu",
a204d90c KM	340	.init = rsnd_scu_init,
a204d90c KM	341	.quit = rsnd_scu_quit,
07539c1d	342	.start = rsnd_scu_start,
ef749400	343	.stop = rsnd_scu_stop,
07539c1d KM	344	};
07539c1d KM	345
013f38fe KM	346	static struct rsnd_mod_ops rsnd_scu_non_ops = {
013f38fe KM	347	.name = "scu (non)",
7b5ce975	348	.init = rsnd_scu_ssi_mode_init,
013f38fe KM	349	};
013f38fe KM	350
07539c1d KM	351	struct rsnd_mod rsnd_scu_mod_get(struct rsnd_priv priv, int id)
07539c1d KM	352	{
8b14719b TI	353	if (WARN_ON(id < 0 \|\| id >= rsnd_scu_nr(priv)))
8b14719b TI	354	id = 0;
07539c1d KM	355
	356	return &((struct rsnd_scu *)(priv->scu) + id)->mod;
	357	}
	358
	359	int rsnd_scu_probe(struct platform_device *pdev,
	360	struct rcar_snd_info *info,
	361	struct rsnd_priv *priv)
	362	{
	363	struct device *dev = rsnd_priv_to_dev(priv);
	364	struct rsnd_scu *scu;
013f38fe	365	struct rsnd_mod_ops *ops;
ef749400 KM	366	struct clk *clk;
ef749400 KM	367	char name[RSND_SCU_NAME_SIZE];
07539c1d KM	368	int i, nr;
	369
	370	/*
	371	* init SCU
	372	*/
	373	nr = info->scu_info_nr;
	374	scu = devm_kzalloc(dev, sizeof(scu) nr, GFP_KERNEL);
	375	if (!scu) {
	376	dev_err(dev, "SCU allocate failed\n");
	377	return -ENOMEM;
	378	}
	379
	380	priv->scu_nr = nr;
	381	priv->scu = scu;
	382
	383	for_each_rsnd_scu(scu, priv, i) {
ef749400 KM	384	snprintf(name, RSND_SCU_NAME_SIZE, "scu.%d", i);
	385
	386	clk = devm_clk_get(dev, name);
	387	if (IS_ERR(clk))
	388	return PTR_ERR(clk);
	389
07539c1d	390	scu->info = &info->scu_info[i];
ef749400	391	scu->clk = clk;
07539c1d	392
013f38fe KM	393	ops = &rsnd_scu_non_ops;
	394	if (rsnd_scu_hpbif_is_enable(&scu->mod))
	395	ops = &rsnd_scu_ops;
	396
	397	rsnd_mod_init(priv, &scu->mod, ops, i);
	398
374a5281 KM	399	dev_dbg(dev, "SCU%d probed\n", i);
374a5281 KM	400	}
07539c1d KM	401	dev_dbg(dev, "scu probed\n");
	402
	403	return 0;
	404	}
	405
	406	void rsnd_scu_remove(struct platform_device *pdev,
	407	struct rsnd_priv *priv)
	408	{
	409	}