[mirror_ubuntu-zesty-kernel.git] / sound / soc / sh / rcar / dvc.c

/*
 * Renesas R-Car DVC support
 *
 * Copyright (C) 2014 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"

#define RSND_DVC_NAME_SIZE	16

#define DVC_NAME "dvc"

struct rsnd_dvc {
	struct rsnd_dvc_platform_info *info; /* rcar_snd.h */
	struct rsnd_mod mod;
	struct clk *clk;
	struct rsnd_kctrl_cfg_m volume;
	struct rsnd_kctrl_cfg_m mute;
	struct rsnd_kctrl_cfg_s ren;	/* Ramp Enable */
	struct rsnd_kctrl_cfg_s rup;	/* Ramp Rate Up */
	struct rsnd_kctrl_cfg_s rdown;	/* Ramp Rate Down */
};

#define rsnd_mod_to_dvc(_mod)	\
	container_of((_mod), struct rsnd_dvc, mod)

#define for_each_rsnd_dvc(pos, priv, i)				\
	for ((i) = 0;						\
	     ((i) < rsnd_dvc_nr(priv)) &&			\
	     ((pos) = (struct rsnd_dvc *)(priv)->dvc + i);	\
	     i++)

static const char const *dvc_ramp_rate[] = {
	"128 dB/1 step",	 /* 00000 */
	"64 dB/1 step",		 /* 00001 */
	"32 dB/1 step",		 /* 00010 */
	"16 dB/1 step",		 /* 00011 */
	"8 dB/1 step",		 /* 00100 */
	"4 dB/1 step",		 /* 00101 */
	"2 dB/1 step",		 /* 00110 */
	"1 dB/1 step",		 /* 00111 */
	"0.5 dB/1 step",	 /* 01000 */
	"0.25 dB/1 step",	 /* 01001 */
	"0.125 dB/1 step",	 /* 01010 */
	"0.125 dB/2 steps",	 /* 01011 */
	"0.125 dB/4 steps",	 /* 01100 */
	"0.125 dB/8 steps",	 /* 01101 */
	"0.125 dB/16 steps",	 /* 01110 */
	"0.125 dB/32 steps",	 /* 01111 */
	"0.125 dB/64 steps",	 /* 10000 */
	"0.125 dB/128 steps",	 /* 10001 */
	"0.125 dB/256 steps",	 /* 10010 */
	"0.125 dB/512 steps",	 /* 10011 */
	"0.125 dB/1024 steps",	 /* 10100 */
	"0.125 dB/2048 steps",	 /* 10101 */
	"0.125 dB/4096 steps",	 /* 10110 */
	"0.125 dB/8192 steps",	 /* 10111 */
};

static void rsnd_dvc_volume_update(struct rsnd_mod *mod)
{
	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
	u32 val[RSND_DVC_CHANNELS];
	u32 dvucr = 0;
	u32 mute = 0;
	int i;

	for (i = 0; i < dvc->mute.cfg.size; i++)
		mute |= (!!dvc->mute.cfg.val[i]) << i;

	/* Disable DVC Register access */
	rsnd_mod_write(mod, DVC_DVUER, 0);

	/* Enable Ramp */
	if (dvc->ren.val) {
		dvucr |= 0x10;

		/* Digital Volume Max */
		for (i = 0; i < RSND_DVC_CHANNELS; i++)
			val[i] = dvc->volume.cfg.max;

		rsnd_mod_write(mod, DVC_VRCTR, 0xff);
		rsnd_mod_write(mod, DVC_VRPDR, dvc->rup.val << 8 |
					       dvc->rdown.val);
		/*
		 * FIXME !!
		 * use scale-downed Digital Volume
		 * as Volume Ramp
		 * 7F FFFF -> 3FF
		 */
		rsnd_mod_write(mod, DVC_VRDBR,
			       0x3ff - (dvc->volume.val[0] >> 13));

	} else {
		for (i = 0; i < RSND_DVC_CHANNELS; i++)
			val[i] = dvc->volume.val[i];
	}

	/* Enable Digital Volume */
	dvucr |= 0x100;
	rsnd_mod_write(mod, DVC_VOL0R, val[0]);
	rsnd_mod_write(mod, DVC_VOL1R, val[1]);

	/*  Enable Mute */
	if (mute) {
		dvucr |= 0x1;
		rsnd_mod_write(mod, DVC_ZCMCR, mute);
	}

	rsnd_mod_write(mod, DVC_DVUCR, dvucr);

	/* Enable DVC Register access */
	rsnd_mod_write(mod, DVC_DVUER, 1);
}

static int rsnd_dvc_probe_gen2(struct rsnd_mod *mod,
			       struct rsnd_dai *rdai)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	struct device *dev = rsnd_priv_to_dev(priv);

	dev_dbg(dev, "%s[%d] (Gen2) is probed\n",
		rsnd_mod_name(mod), rsnd_mod_id(mod));

	return 0;
}

static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
			 struct rsnd_dai *rdai)
{
	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(dvc_mod);
	struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod);
	struct rsnd_priv *priv = rsnd_mod_to_priv(dvc_mod);
	struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
	struct device *dev = rsnd_priv_to_dev(priv);
	int dvc_id = rsnd_mod_id(dvc_mod);
	int src_id = rsnd_mod_id(src_mod);
	u32 route[] = {
		[0] = 0x30000,
		[1] = 0x30001,
		[2] = 0x40000,
		[3] = 0x10000,
		[4] = 0x20000,
		[5] = 0x40100
	};

	if (src_id >= ARRAY_SIZE(route)) {
		dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id);
		return -EINVAL;
	}

	clk_prepare_enable(dvc->clk);

	/*
	 * fixme
	 * it doesn't support CTU/MIX
	 */
	rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);

	rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
	rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);

	rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);

	rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod));

	/* ch0/ch1 Volume */
	rsnd_dvc_volume_update(dvc_mod);

	rsnd_mod_write(dvc_mod, DVC_DVUIR, 0);

	rsnd_adg_set_cmd_timsel_gen2(rdai, dvc_mod, io);

	return 0;
}

static int rsnd_dvc_quit(struct rsnd_mod *mod,
			 struct rsnd_dai *rdai)
{
	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);

	clk_disable_unprepare(dvc->clk);

	return 0;
}

static int rsnd_dvc_start(struct rsnd_mod *mod,
			  struct rsnd_dai *rdai)
{
	rsnd_mod_write(mod, CMD_CTRL, 0x10);

	return 0;
}

static int rsnd_dvc_stop(struct rsnd_mod *mod,
			 struct rsnd_dai *rdai)
{
	rsnd_mod_write(mod, CMD_CTRL, 0);

	return 0;
}

static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
			    struct rsnd_dai *rdai,
			    struct snd_soc_pcm_runtime *rtd)
{
	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
	int ret;

	/* Volume */
	ret = rsnd_kctrl_new_m(mod, rdai, rtd,
			rsnd_dai_is_play(rdai, io) ?
			"DVC Out Playback Volume" : "DVC In Capture Volume",
			rsnd_dvc_volume_update,
			&dvc->volume, 0x00800000 - 1);
	if (ret < 0)
		return ret;

	/* Mute */
	ret = rsnd_kctrl_new_m(mod, rdai, rtd,
			rsnd_dai_is_play(rdai, io) ?
			"DVC Out Mute Switch" : "DVC In Mute Switch",
			rsnd_dvc_volume_update,
			&dvc->mute, 1);
	if (ret < 0)
		return ret;

	/* Ramp */
	ret = rsnd_kctrl_new_s(mod, rdai, rtd,
			rsnd_dai_is_play(rdai, io) ?
			"DVC Out Ramp Switch" : "DVC In Ramp Switch",
			rsnd_dvc_volume_update,
			&dvc->ren, 1);
	if (ret < 0)
		return ret;

	ret = rsnd_kctrl_new_e(mod, rdai, rtd,
			rsnd_dai_is_play(rdai, io) ?
			"DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
			&dvc->rup,
			rsnd_dvc_volume_update,
			dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
	if (ret < 0)
		return ret;

	ret = rsnd_kctrl_new_e(mod, rdai, rtd,
			rsnd_dai_is_play(rdai, io) ?
			"DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
			&dvc->rdown,
			rsnd_dvc_volume_update,
			dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));

	if (ret < 0)
		return ret;

	return 0;
}

static struct rsnd_mod_ops rsnd_dvc_ops = {
	.name		= DVC_NAME,
	.probe		= rsnd_dvc_probe_gen2,
	.init		= rsnd_dvc_init,
	.quit		= rsnd_dvc_quit,
	.start		= rsnd_dvc_start,
	.stop		= rsnd_dvc_stop,
	.pcm_new	= rsnd_dvc_pcm_new,
};

struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
{
	if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
		id = 0;

	return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
}

static void rsnd_of_parse_dvc(struct platform_device *pdev,
			      const struct rsnd_of_data *of_data,
			      struct rsnd_priv *priv)
{
	struct device_node *node;
	struct rsnd_dvc_platform_info *dvc_info;
	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
	struct device *dev = &pdev->dev;
	int nr;

	if (!of_data)
		return;

	node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
	if (!node)
		return;

	nr = of_get_child_count(node);
	if (!nr)
		goto rsnd_of_parse_dvc_end;

	dvc_info = devm_kzalloc(dev,
				sizeof(struct rsnd_dvc_platform_info) * nr,
				GFP_KERNEL);
	if (!dvc_info) {
		dev_err(dev, "dvc info allocation error\n");
		goto rsnd_of_parse_dvc_end;
	}

	info->dvc_info		= dvc_info;
	info->dvc_info_nr	= nr;

rsnd_of_parse_dvc_end:
	of_node_put(node);
}

int rsnd_dvc_probe(struct platform_device *pdev,
		   const struct rsnd_of_data *of_data,
		   struct rsnd_priv *priv)
{
	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
	struct device *dev = rsnd_priv_to_dev(priv);
	struct rsnd_dvc *dvc;
	struct clk *clk;
	char name[RSND_DVC_NAME_SIZE];
	int i, nr;

	rsnd_of_parse_dvc(pdev, of_data, priv);

	nr = info->dvc_info_nr;
	if (!nr)
		return 0;

	/* This driver doesn't support Gen1 at this point */
	if (rsnd_is_gen1(priv)) {
		dev_warn(dev, "CMD is not supported on Gen1\n");
		return -EINVAL;
	}

	dvc	= devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL);
	if (!dvc) {
		dev_err(dev, "CMD allocate failed\n");
		return -ENOMEM;
	}

	priv->dvc_nr	= nr;
	priv->dvc	= dvc;

	for_each_rsnd_dvc(dvc, priv, i) {
		snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
			 DVC_NAME, i);

		clk = devm_clk_get(dev, name);
		if (IS_ERR(clk))
			return PTR_ERR(clk);

		dvc->info = &info->dvc_info[i];
		dvc->clk  = clk;

		rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops, RSND_MOD_DVC, i);

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

	return 0;
}
Commit	Line	Data
bff58ea4 KM	1	/*
	2	* Renesas R-Car DVC support
	3	*
	4	* Copyright (C) 2014 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	#define RSND_DVC_NAME_SIZE 16
8aefda50 KM	14
	15	#define DVC_NAME "dvc"
	16
bff58ea4 KM	17	struct rsnd_dvc {
	18	struct rsnd_dvc_platform_info info; / rcar_snd.h */
	19	struct rsnd_mod mod;
	20	struct clk *clk;
170a2497 KM	21	struct rsnd_kctrl_cfg_m volume;
	22	struct rsnd_kctrl_cfg_m mute;
	23	struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
	24	struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
	25	struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */
bff58ea4 KM	26	};
	27
	28	#define rsnd_mod_to_dvc(_mod) \
	29	container_of((_mod), struct rsnd_dvc, mod)
	30
	31	#define for_each_rsnd_dvc(pos, priv, i) \
	32	for ((i) = 0; \
	33	((i) < rsnd_dvc_nr(priv)) && \
	34	((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
	35	i++)
	36
3539cacf KM	37	static const char const *dvc_ramp_rate[] = {
	38	"128 dB/1 step", /* 00000 */
	39	"64 dB/1 step", /* 00001 */
	40	"32 dB/1 step", /* 00010 */
	41	"16 dB/1 step", /* 00011 */
	42	"8 dB/1 step", /* 00100 */
	43	"4 dB/1 step", /* 00101 */
	44	"2 dB/1 step", /* 00110 */
	45	"1 dB/1 step", /* 00111 */
	46	"0.5 dB/1 step", /* 01000 */
	47	"0.25 dB/1 step", /* 01001 */
	48	"0.125 dB/1 step", /* 01010 */
	49	"0.125 dB/2 steps", /* 01011 */
	50	"0.125 dB/4 steps", /* 01100 */
	51	"0.125 dB/8 steps", /* 01101 */
	52	"0.125 dB/16 steps", /* 01110 */
	53	"0.125 dB/32 steps", /* 01111 */
	54	"0.125 dB/64 steps", /* 10000 */
	55	"0.125 dB/128 steps", /* 10001 */
	56	"0.125 dB/256 steps", /* 10010 */
	57	"0.125 dB/512 steps", /* 10011 */
	58	"0.125 dB/1024 steps", /* 10100 */
	59	"0.125 dB/2048 steps", /* 10101 */
	60	"0.125 dB/4096 steps", /* 10110 */
	61	"0.125 dB/8192 steps", /* 10111 */
	62	};
	63
bff58ea4 KM	64	static void rsnd_dvc_volume_update(struct rsnd_mod *mod)
	65	{
	66	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
3539cacf	67	u32 val[RSND_DVC_CHANNELS];
1c5d1c98	68	u32 dvucr = 0;
cd2b6574	69	u32 mute = 0;
bff58ea4 KM	70	int i;
bff58ea4 KM	71
ec14af91 KM	72	for (i = 0; i < dvc->mute.cfg.size; i++)
ec14af91 KM	73	mute \|= (!!dvc->mute.cfg.val[i]) << i;
bff58ea4	74
140bab89 KM	75	/* Disable DVC Register access */
	76	rsnd_mod_write(mod, DVC_DVUER, 0);
	77
3539cacf KM	78	/* Enable Ramp */
	79	if (dvc->ren.val) {
	80	dvucr \|= 0x10;
	81
	82	/* Digital Volume Max */
	83	for (i = 0; i < RSND_DVC_CHANNELS; i++)
	84	val[i] = dvc->volume.cfg.max;
	85
	86	rsnd_mod_write(mod, DVC_VRCTR, 0xff);
	87	rsnd_mod_write(mod, DVC_VRPDR, dvc->rup.val << 8 \|
	88	dvc->rdown.val);
	89	/*
	90	* FIXME !!
	91	* use scale-downed Digital Volume
	92	* as Volume Ramp
	93	* 7F FFFF -> 3FF
	94	*/
	95	rsnd_mod_write(mod, DVC_VRDBR,
	96	0x3ff - (dvc->volume.val[0] >> 13));
	97
	98	} else {
	99	for (i = 0; i < RSND_DVC_CHANNELS; i++)
	100	val[i] = dvc->volume.val[i];
	101	}
	102
1c5d1c98	103	/* Enable Digital Volume */
3539cacf KM	104	dvucr \|= 0x100;
	105	rsnd_mod_write(mod, DVC_VOL0R, val[0]);
	106	rsnd_mod_write(mod, DVC_VOL1R, val[1]);
cd2b6574	107
1c5d1c98 KM	108	/* Enable Mute */
	109	if (mute) {
	110	dvucr \|= 0x1;
	111	rsnd_mod_write(mod, DVC_ZCMCR, mute);
	112	}
	113
	114	rsnd_mod_write(mod, DVC_DVUCR, dvucr);
140bab89 KM	115
	116	/* Enable DVC Register access */
	117	rsnd_mod_write(mod, DVC_DVUER, 1);
bff58ea4 KM	118	}
bff58ea4 KM	119
8aefda50 KM	120	static int rsnd_dvc_probe_gen2(struct rsnd_mod *mod,
	121	struct rsnd_dai *rdai)
	122	{
	123	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	124	struct device *dev = rsnd_priv_to_dev(priv);
	125
30cc4faf KM	126	dev_dbg(dev, "%s[%d] (Gen2) is probed\n",
30cc4faf KM	127	rsnd_mod_name(mod), rsnd_mod_id(mod));
8aefda50 KM	128
	129	return 0;
	130	}
	131
bff58ea4 KM	132	static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
	133	struct rsnd_dai *rdai)
	134	{
	135	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(dvc_mod);
	136	struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod);
	137	struct rsnd_priv *priv = rsnd_mod_to_priv(dvc_mod);
	138	struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
	139	struct device *dev = rsnd_priv_to_dev(priv);
	140	int dvc_id = rsnd_mod_id(dvc_mod);
	141	int src_id = rsnd_mod_id(src_mod);
	142	u32 route[] = {
	143	[0] = 0x30000,
	144	[1] = 0x30001,
	145	[2] = 0x40000,
	146	[3] = 0x10000,
	147	[4] = 0x20000,
	148	[5] = 0x40100
	149	};
	150
	151	if (src_id >= ARRAY_SIZE(route)) {
	152	dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id);
	153	return -EINVAL;
	154	}
	155
	156	clk_prepare_enable(dvc->clk);
	157
	158	/*
	159	* fixme
	160	* it doesn't support CTU/MIX
	161	*/
	162	rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);
	163
	164	rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
	165	rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);
	166
	167	rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);
	168
	169	rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod));
	170
bff58ea4 KM	171	/* ch0/ch1 Volume */
	172	rsnd_dvc_volume_update(dvc_mod);
	173
	174	rsnd_mod_write(dvc_mod, DVC_DVUIR, 0);
	175
bff58ea4 KM	176	rsnd_adg_set_cmd_timsel_gen2(rdai, dvc_mod, io);
	177
	178	return 0;
	179	}
	180
	181	static int rsnd_dvc_quit(struct rsnd_mod *mod,
	182	struct rsnd_dai *rdai)
	183	{
	184	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
	185
	186	clk_disable_unprepare(dvc->clk);
	187
	188	return 0;
	189	}
	190
	191	static int rsnd_dvc_start(struct rsnd_mod *mod,
	192	struct rsnd_dai *rdai)
	193	{
	194	rsnd_mod_write(mod, CMD_CTRL, 0x10);
	195
	196	return 0;
	197	}
	198
	199	static int rsnd_dvc_stop(struct rsnd_mod *mod,
	200	struct rsnd_dai *rdai)
	201	{
	202	rsnd_mod_write(mod, CMD_CTRL, 0);
	203
	204	return 0;
	205	}
	206
486b09c7 KM	207	static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
	208	struct rsnd_dai *rdai,
	209	struct snd_soc_pcm_runtime *rtd)
	210	{
	211	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
	212	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
	213	int ret;
	214
	215	/* Volume */
170a2497	216	ret = rsnd_kctrl_new_m(mod, rdai, rtd,
486b09c7 KM	217	rsnd_dai_is_play(rdai, io) ?
486b09c7 KM	218	"DVC Out Playback Volume" : "DVC In Capture Volume",
170a2497	219	rsnd_dvc_volume_update,
ec14af91	220	&dvc->volume, 0x00800000 - 1);
486b09c7 KM	221	if (ret < 0)
	222	return ret;
	223
cd2b6574	224	/* Mute */
170a2497	225	ret = rsnd_kctrl_new_m(mod, rdai, rtd,
cd2b6574 KM	226	rsnd_dai_is_play(rdai, io) ?
cd2b6574 KM	227	"DVC Out Mute Switch" : "DVC In Mute Switch",
170a2497	228	rsnd_dvc_volume_update,
ec14af91	229	&dvc->mute, 1);
cd2b6574 KM	230	if (ret < 0)
	231	return ret;
	232
3539cacf	233	/* Ramp */
170a2497	234	ret = rsnd_kctrl_new_s(mod, rdai, rtd,
3539cacf KM	235	rsnd_dai_is_play(rdai, io) ?
3539cacf KM	236	"DVC Out Ramp Switch" : "DVC In Ramp Switch",
170a2497	237	rsnd_dvc_volume_update,
3539cacf KM	238	&dvc->ren, 1);
	239	if (ret < 0)
	240	return ret;
	241
170a2497	242	ret = rsnd_kctrl_new_e(mod, rdai, rtd,
3539cacf KM	243	rsnd_dai_is_play(rdai, io) ?
	244	"DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
	245	&dvc->rup,
170a2497	246	rsnd_dvc_volume_update,
3539cacf KM	247	dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
	248	if (ret < 0)
	249	return ret;
	250
170a2497	251	ret = rsnd_kctrl_new_e(mod, rdai, rtd,
3539cacf KM	252	rsnd_dai_is_play(rdai, io) ?
	253	"DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
	254	&dvc->rdown,
170a2497	255	rsnd_dvc_volume_update,
3539cacf KM	256	dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
	257
	258	if (ret < 0)
	259	return ret;
	260
486b09c7 KM	261	return 0;
	262	}
	263
bff58ea4	264	static struct rsnd_mod_ops rsnd_dvc_ops = {
8aefda50 KM	265	.name = DVC_NAME,
8aefda50 KM	266	.probe = rsnd_dvc_probe_gen2,
bff58ea4 KM	267	.init = rsnd_dvc_init,
	268	.quit = rsnd_dvc_quit,
	269	.start = rsnd_dvc_start,
	270	.stop = rsnd_dvc_stop,
	271	.pcm_new = rsnd_dvc_pcm_new,
	272	};
	273
	274	struct rsnd_mod rsnd_dvc_mod_get(struct rsnd_priv priv, int id)
	275	{
	276	if (WARN_ON(id < 0 \|\| id >= rsnd_dvc_nr(priv)))
	277	id = 0;
	278
	279	return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
	280	}
	281
34cb6123 KM	282	static void rsnd_of_parse_dvc(struct platform_device *pdev,
	283	const struct rsnd_of_data *of_data,
	284	struct rsnd_priv *priv)
	285	{
	286	struct device_node *node;
	287	struct rsnd_dvc_platform_info *dvc_info;
	288	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
	289	struct device *dev = &pdev->dev;
	290	int nr;
	291
	292	if (!of_data)
	293	return;
	294
	295	node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
	296	if (!node)
	297	return;
	298
	299	nr = of_get_child_count(node);
	300	if (!nr)
	301	goto rsnd_of_parse_dvc_end;
	302
	303	dvc_info = devm_kzalloc(dev,
	304	sizeof(struct rsnd_dvc_platform_info) * nr,
	305	GFP_KERNEL);
	306	if (!dvc_info) {
	307	dev_err(dev, "dvc info allocation error\n");
	308	goto rsnd_of_parse_dvc_end;
	309	}
	310
	311	info->dvc_info = dvc_info;
	312	info->dvc_info_nr = nr;
	313
	314	rsnd_of_parse_dvc_end:
	315	of_node_put(node);
	316	}
	317
bff58ea4 KM	318	int rsnd_dvc_probe(struct platform_device *pdev,
	319	const struct rsnd_of_data *of_data,
	320	struct rsnd_priv *priv)
	321	{
	322	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
	323	struct device *dev = rsnd_priv_to_dev(priv);
	324	struct rsnd_dvc *dvc;
	325	struct clk *clk;
	326	char name[RSND_DVC_NAME_SIZE];
	327	int i, nr;
	328
34cb6123 KM	329	rsnd_of_parse_dvc(pdev, of_data, priv);
34cb6123 KM	330
bff58ea4 KM	331	nr = info->dvc_info_nr;
	332	if (!nr)
	333	return 0;
	334
	335	/* This driver doesn't support Gen1 at this point */
	336	if (rsnd_is_gen1(priv)) {
	337	dev_warn(dev, "CMD is not supported on Gen1\n");
	338	return -EINVAL;
	339	}
	340
	341	dvc = devm_kzalloc(dev, sizeof(dvc) nr, GFP_KERNEL);
	342	if (!dvc) {
	343	dev_err(dev, "CMD allocate failed\n");
	344	return -ENOMEM;
	345	}
	346
	347	priv->dvc_nr = nr;
	348	priv->dvc = dvc;
	349
	350	for_each_rsnd_dvc(dvc, priv, i) {
8aefda50 KM	351	snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
8aefda50 KM	352	DVC_NAME, i);
bff58ea4 KM	353
	354	clk = devm_clk_get(dev, name);
	355	if (IS_ERR(clk))
	356	return PTR_ERR(clk);
	357
	358	dvc->info = &info->dvc_info[i];
	359	dvc->clk = clk;
	360
	361	rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops, RSND_MOD_DVC, i);
	362
	363	dev_dbg(dev, "CMD%d probed\n", i);
	364	}
	365
	366	return 0;
	367	}