[deliverable/linux.git] / sound / soc / sh / rcar / rsrc-card.c

/*
 * Renesas Sampling Rate Convert Sound Card for DPCM
 *
 * Copyright (C) 2015 Renesas Solutions Corp.
 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 *
 * based on ${LINUX}/sound/soc/generic/simple-card.c
 *
 * 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 <linux/clk.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/simple_card_utils.h>

struct rsrc_card_of_data {
	const char *prefix;
	const struct snd_soc_dapm_route *routes;
	int num_routes;
};

static const struct snd_soc_dapm_route routes_ssi0_ak4642[] = {
	{"ak4642 Playback", NULL, "DAI0 Playback"},
	{"DAI0 Capture", NULL, "ak4642 Capture"},
};

static const struct rsrc_card_of_data routes_of_ssi0_ak4642 = {
	.prefix		= "ak4642",
	.routes		= routes_ssi0_ak4642,
	.num_routes	= ARRAY_SIZE(routes_ssi0_ak4642),
};

static const struct of_device_id rsrc_card_of_match[] = {
	{ .compatible = "renesas,rsrc-card,lager",	.data = &routes_of_ssi0_ak4642 },
	{ .compatible = "renesas,rsrc-card,koelsch",	.data = &routes_of_ssi0_ak4642 },
	{ .compatible = "renesas,rsrc-card", },
	{},
};
MODULE_DEVICE_TABLE(of, rsrc_card_of_match);

#define IDX_CPU		0
#define IDX_CODEC	1
struct rsrc_card_priv {
	struct snd_soc_card snd_card;
	struct snd_soc_codec_conf codec_conf;
	struct asoc_simple_dai *dai_props;
	struct snd_soc_dai_link *dai_link;
	u32 convert_rate;
	u32 convert_channels;
};

#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
#define rsrc_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
#define rsrc_priv_to_props(priv, i) ((priv)->dai_props + (i))

static int rsrc_card_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct rsrc_card_priv *priv =	snd_soc_card_get_drvdata(rtd->card);
	struct asoc_simple_dai *dai_props =
		rsrc_priv_to_props(priv, rtd->num);

	return clk_prepare_enable(dai_props->clk);
}

static void rsrc_card_shutdown(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct rsrc_card_priv *priv =	snd_soc_card_get_drvdata(rtd->card);
	struct asoc_simple_dai *dai_props =
		rsrc_priv_to_props(priv, rtd->num);

	clk_disable_unprepare(dai_props->clk);
}

static struct snd_soc_ops rsrc_card_ops = {
	.startup = rsrc_card_startup,
	.shutdown = rsrc_card_shutdown,
};

static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
	struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *dai;
	struct snd_soc_dai_link *dai_link;
	struct asoc_simple_dai *dai_props;
	int num = rtd->num;
	int ret;

	dai_link	= rsrc_priv_to_link(priv, num);
	dai_props	= rsrc_priv_to_props(priv, num);
	dai		= dai_link->dynamic ?
				rtd->cpu_dai :
				rtd->codec_dai;

	if (dai_props->sysclk) {
		ret = snd_soc_dai_set_sysclk(dai, 0, dai_props->sysclk, 0);
		if (ret && ret != -ENOTSUPP) {
			dev_err(dai->dev, "set_sysclk error\n");
			goto err;
		}
	}

	if (dai_props->slots) {
		ret = snd_soc_dai_set_tdm_slot(dai,
					       dai_props->tx_slot_mask,
					       dai_props->rx_slot_mask,
					       dai_props->slots,
					       dai_props->slot_width);
		if (ret && ret != -ENOTSUPP) {
			dev_err(dai->dev, "set_tdm_slot error\n");
			goto err;
		}
	}

	ret = 0;

err:
	return ret;
}

static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
					struct snd_pcm_hw_params *params)
{
	struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
	struct snd_interval *rate = hw_param_interval(params,
						      SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval *channels = hw_param_interval(params,
						SNDRV_PCM_HW_PARAM_CHANNELS);

	if (priv->convert_rate)
		rate->min =
		rate->max = priv->convert_rate;

	if (priv->convert_channels)
		channels->min =
		channels->max = priv->convert_channels;

	return 0;
}

static int rsrc_card_parse_links(struct device_node *np,
				 struct rsrc_card_priv *priv,
				 int idx, bool is_fe)
{
	struct device *dev = rsrc_priv_to_dev(priv);
	struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
	struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
	struct of_phandle_args args;
	int ret;

	/*
	 * Get node via "sound-dai = <&phandle port>"
	 * it will be used as xxx_of_node on soc_bind_dai_link()
	 */
	ret = of_parse_phandle_with_args(np, "sound-dai",
					 "#sound-dai-cells", 0, &args);
	if (ret)
		return ret;

	/* Parse TDM slot */
	ret = snd_soc_of_parse_tdm_slot(np,
					&dai_props->tx_slot_mask,
					&dai_props->rx_slot_mask,
					&dai_props->slots,
					&dai_props->slot_width);
	if (ret)
		return ret;

	if (is_fe) {
		/* BE is dummy */
		dai_link->codec_of_node		= NULL;
		dai_link->codec_dai_name	= "snd-soc-dummy-dai";
		dai_link->codec_name		= "snd-soc-dummy";

		/* FE settings */
		dai_link->dynamic		= 1;
		dai_link->dpcm_merged_format	= 1;
		dai_link->cpu_of_node		= args.np;
		ret = snd_soc_of_get_dai_name(np, &dai_link->cpu_dai_name);
		if (ret < 0)
			return ret;

		ret = asoc_simple_card_parse_clk_cpu(np, dai_link, dai_props);
		if (ret < 0)
			return ret;

		ret = asoc_simple_card_set_dailink_name(dev, dai_link,
							"fe.%s",
							dai_link->cpu_dai_name);
		if (ret < 0)
			return ret;

		/*
		 * In soc_bind_dai_link() will check cpu name after
		 * of_node matching if dai_link has cpu_dai_name.
		 * but, it will never match if name was created by
		 * fmt_single_name() remove cpu_dai_name if cpu_args
		 * was 0. See:
		 *	fmt_single_name()
		 *	fmt_multiple_name()
		 */
		if (!args.args_count)
			dai_link->cpu_dai_name = NULL;
	} else {
		const struct rsrc_card_of_data *of_data;

		of_data = of_device_get_match_data(dev);

		/* FE is dummy */
		dai_link->cpu_of_node		= NULL;
		dai_link->cpu_dai_name		= "snd-soc-dummy-dai";
		dai_link->cpu_name		= "snd-soc-dummy";

		/* BE settings */
		dai_link->no_pcm		= 1;
		dai_link->be_hw_params_fixup	= rsrc_card_be_hw_params_fixup;
		dai_link->codec_of_node		= args.np;
		ret = snd_soc_of_get_dai_name(np, &dai_link->codec_dai_name);
		if (ret < 0)
			return ret;

		ret = asoc_simple_card_parse_clk_codec(np, dai_link, dai_props);
		if (ret < 0)
			return ret;

		ret = asoc_simple_card_set_dailink_name(dev, dai_link,
							"be.%s",
							dai_link->codec_dai_name);
		if (ret < 0)
			return ret;

		/* additional name prefix */
		if (of_data) {
			priv->codec_conf.of_node = dai_link->codec_of_node;
			priv->codec_conf.name_prefix = of_data->prefix;
		} else {
			snd_soc_of_parse_audio_prefix(&priv->snd_card,
						      &priv->codec_conf,
						      dai_link->codec_of_node,
						      "audio-prefix");
		}
	}

	/* Simple Card assumes platform == cpu */
	dai_link->platform_of_node	= dai_link->cpu_of_node;
	dai_link->dpcm_playback		= 1;
	dai_link->dpcm_capture		= 1;
	dai_link->ops			= &rsrc_card_ops;
	dai_link->init			= rsrc_card_dai_init;

	dev_dbg(dev, "\t%s / %04x / %d\n",
		dai_link->name,
		dai_link->dai_fmt,
		dai_props->sysclk);

	return 0;
}

static int rsrc_card_dai_link_of(struct device_node *node,
				 struct rsrc_card_priv *priv)
{
	struct device *dev = rsrc_priv_to_dev(priv);
	struct snd_soc_dai_link *dai_link;
	struct device_node *np;
	unsigned int daifmt = 0;
	int ret, i;
	bool is_fe;

	/* find 1st codec */
	i = 0;
	for_each_child_of_node(node, np) {
		dai_link = rsrc_priv_to_link(priv, i);

		if (strcmp(np->name, "codec") == 0) {
			ret = asoc_simple_card_parse_daifmt(dev, node, np,
							    NULL, &daifmt);
			if (ret < 0)
				return ret;
			break;
		}
		i++;
	}

	i = 0;
	for_each_child_of_node(node, np) {
		dai_link = rsrc_priv_to_link(priv, i);
		dai_link->dai_fmt = daifmt;

		is_fe = false;
		if (strcmp(np->name, "cpu") == 0)
			is_fe = true;

		ret = rsrc_card_parse_links(np, priv, i, is_fe);
		if (ret < 0)
			return ret;
		i++;
	}

	return 0;
}

static int rsrc_card_parse_of(struct device_node *node,
			      struct rsrc_card_priv *priv,
			      struct device *dev)
{
	const struct rsrc_card_of_data *of_data = of_device_get_match_data(dev);
	struct asoc_simple_dai *props;
	struct snd_soc_dai_link *links;
	int ret;
	int num;

	if (!node)
		return -EINVAL;

	num = of_get_child_count(node);
	props = devm_kzalloc(dev, sizeof(*props) * num, GFP_KERNEL);
	links = devm_kzalloc(dev, sizeof(*links) * num, GFP_KERNEL);
	if (!props || !links)
		return -ENOMEM;

	priv->dai_props	= props;
	priv->dai_link	= links;

	/* Init snd_soc_card */
	priv->snd_card.owner			= THIS_MODULE;
	priv->snd_card.dev			= dev;
	priv->snd_card.dai_link			= priv->dai_link;
	priv->snd_card.num_links		= num;
	priv->snd_card.codec_conf		= &priv->codec_conf;
	priv->snd_card.num_configs		= 1;

	if (of_data) {
		priv->snd_card.of_dapm_routes		= of_data->routes;
		priv->snd_card.num_of_dapm_routes	= of_data->num_routes;
	} else {
		snd_soc_of_parse_audio_routing(&priv->snd_card,
					       "audio-routing");
	}

	/* sampling rate convert */
	of_property_read_u32(node, "convert-rate", &priv->convert_rate);

	/* channels transfer */
	of_property_read_u32(node, "convert-channels", &priv->convert_channels);

	dev_dbg(dev, "New rsrc-audio-card: %s\n",
		priv->snd_card.name ? priv->snd_card.name : "");
	dev_dbg(dev, "SRC : convert_rate     %d\n", priv->convert_rate);
	dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels);

	ret = rsrc_card_dai_link_of(node, priv);
	if (ret < 0)
		return ret;

	ret = asoc_simple_card_parse_card_name(&priv->snd_card, "card-");
	if (ret < 0)
		return ret;

	return 0;
}

/* Decrease the reference count of the device nodes */
static int rsrc_card_unref(struct snd_soc_card *card)
{
	struct snd_soc_dai_link *dai_link;
	int num_links;

	for (num_links = 0, dai_link = card->dai_link;
	     num_links < card->num_links;
	     num_links++, dai_link++) {
		of_node_put(dai_link->cpu_of_node);
		of_node_put(dai_link->codec_of_node);
	}
	return 0;
}

static int rsrc_card_probe(struct platform_device *pdev)
{
	struct rsrc_card_priv *priv;
	struct device_node *np = pdev->dev.of_node;
	struct device *dev = &pdev->dev;
	int ret;

	/* Allocate the private data */
	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	ret = rsrc_card_parse_of(np, priv, dev);
	if (ret < 0) {
		if (ret != -EPROBE_DEFER)
			dev_err(dev, "parse error %d\n", ret);
		goto err;
	}

	snd_soc_card_set_drvdata(&priv->snd_card, priv);

	ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
	if (ret >= 0)
		return ret;
err:
	rsrc_card_unref(&priv->snd_card);

	return ret;
}

static int rsrc_card_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	return rsrc_card_unref(card);
}

static struct platform_driver rsrc_card = {
	.driver = {
		.name = "renesas-src-audio-card",
		.of_match_table = rsrc_card_of_match,
	},
	.probe = rsrc_card_probe,
	.remove = rsrc_card_remove,
};

module_platform_driver(rsrc_card);

MODULE_ALIAS("platform:renesas-src-audio-card");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Renesas Sampling Rate Convert Sound Card");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
Commit	Line	Data
415f1cb2 KM	1	/*
	2	* Renesas Sampling Rate Convert Sound Card for DPCM
	3	*
	4	* Copyright (C) 2015 Renesas Solutions Corp.
	5	* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	6	*
	7	* based on ${LINUX}/sound/soc/generic/simple-card.c
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13	#include <linux/clk.h>
	14	#include <linux/device.h>
	15	#include <linux/module.h>
	16	#include <linux/of.h>
	17	#include <linux/of_device.h>
	18	#include <linux/platform_device.h>
	19	#include <linux/string.h>
	20	#include <sound/jack.h>
	21	#include <sound/soc.h>
	22	#include <sound/soc-dai.h>
d6a4a9a4	23	#include <sound/simple_card_utils.h>
415f1cb2 KM	24
	25	struct rsrc_card_of_data {
	26	const char *prefix;
	27	const struct snd_soc_dapm_route *routes;
	28	int num_routes;
	29	};
	30
	31	static const struct snd_soc_dapm_route routes_ssi0_ak4642[] = {
	32	{"ak4642 Playback", NULL, "DAI0 Playback"},
	33	{"DAI0 Capture", NULL, "ak4642 Capture"},
	34	};
	35
	36	static const struct rsrc_card_of_data routes_of_ssi0_ak4642 = {
	37	.prefix = "ak4642",
	38	.routes = routes_ssi0_ak4642,
	39	.num_routes = ARRAY_SIZE(routes_ssi0_ak4642),
	40	};
	41
	42	static const struct of_device_id rsrc_card_of_match[] = {
	43	{ .compatible = "renesas,rsrc-card,lager", .data = &routes_of_ssi0_ak4642 },
	44	{ .compatible = "renesas,rsrc-card,koelsch", .data = &routes_of_ssi0_ak4642 },
b7419dd7	45	{ .compatible = "renesas,rsrc-card", },
415f1cb2 KM	46	{},
	47	};
	48	MODULE_DEVICE_TABLE(of, rsrc_card_of_match);
	49
415f1cb2 KM	50	#define IDX_CPU 0
	51	#define IDX_CODEC 1
	52	struct rsrc_card_priv {
	53	struct snd_soc_card snd_card;
415f1cb2	54	struct snd_soc_codec_conf codec_conf;
303c3be4	55	struct asoc_simple_dai *dai_props;
3433bf07	56	struct snd_soc_dai_link *dai_link;
af7e2be9	57	u32 convert_rate;
f90432fc	58	u32 convert_channels;
415f1cb2 KM	59	};
	60
	61	#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
8bd616c4 KM	62	#define rsrc_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
8bd616c4 KM	63	#define rsrc_priv_to_props(priv, i) ((priv)->dai_props + (i))
415f1cb2 KM	64
	65	static int rsrc_card_startup(struct snd_pcm_substream *substream)
	66	{
	67	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	68	struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
303c3be4	69	struct asoc_simple_dai *dai_props =
1a497983	70	rsrc_priv_to_props(priv, rtd->num);
415f1cb2	71
04700027	72	return clk_prepare_enable(dai_props->clk);
415f1cb2 KM	73	}
	74
	75	static void rsrc_card_shutdown(struct snd_pcm_substream *substream)
	76	{
	77	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	78	struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
303c3be4	79	struct asoc_simple_dai *dai_props =
1a497983	80	rsrc_priv_to_props(priv, rtd->num);
415f1cb2	81
04700027	82	clk_disable_unprepare(dai_props->clk);
415f1cb2 KM	83	}
	84
	85	static struct snd_soc_ops rsrc_card_ops = {
	86	.startup = rsrc_card_startup,
	87	.shutdown = rsrc_card_shutdown,
	88	};
	89
04700027	90	static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
415f1cb2	91	{
04700027 KM	92	struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
	93	struct snd_soc_dai *dai;
	94	struct snd_soc_dai_link *dai_link;
303c3be4	95	struct asoc_simple_dai *dai_props;
1a497983	96	int num = rtd->num;
415f1cb2 KM	97	int ret;
415f1cb2 KM	98
04700027 KM	99	dai_link = rsrc_priv_to_link(priv, num);
	100	dai_props = rsrc_priv_to_props(priv, num);
	101	dai = dai_link->dynamic ?
	102	rtd->cpu_dai :
	103	rtd->codec_dai;
	104
04700027 KM	105	if (dai_props->sysclk) {
04700027 KM	106	ret = snd_soc_dai_set_sysclk(dai, 0, dai_props->sysclk, 0);
415f1cb2	107	if (ret && ret != -ENOTSUPP) {
415f1cb2	108	dev_err(dai->dev, "set_sysclk error\n");
415f1cb2 KM	109	goto err;
	110	}
	111	}
	112
6dad9758 KM	113	if (dai_props->slots) {
	114	ret = snd_soc_dai_set_tdm_slot(dai,
	115	dai_props->tx_slot_mask,
	116	dai_props->rx_slot_mask,
	117	dai_props->slots,
	118	dai_props->slot_width);
415f1cb2	119	if (ret && ret != -ENOTSUPP) {
6dad9758	120	dev_err(dai->dev, "set_tdm_slot error\n");
415f1cb2 KM	121	goto err;
	122	}
	123	}
	124
	125	ret = 0;
	126
	127	err:
	128	return ret;
	129	}
	130
af7e2be9 KM	131	static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
	132	struct snd_pcm_hw_params *params)
	133	{
	134	struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
	135	struct snd_interval *rate = hw_param_interval(params,
	136	SNDRV_PCM_HW_PARAM_RATE);
f90432fc KM	137	struct snd_interval *channels = hw_param_interval(params,
f90432fc KM	138	SNDRV_PCM_HW_PARAM_CHANNELS);
af7e2be9	139
f90432fc KM	140	if (priv->convert_rate)
	141	rate->min =
	142	rate->max = priv->convert_rate;
af7e2be9	143
f90432fc KM	144	if (priv->convert_channels)
	145	channels->min =
	146	channels->max = priv->convert_channels;
af7e2be9 KM	147
	148	return 0;
	149	}
	150
04700027 KM	151	static int rsrc_card_parse_links(struct device_node *np,
	152	struct rsrc_card_priv *priv,
	153	int idx, bool is_fe)
415f1cb2	154	{
8a99a6bd	155	struct device *dev = rsrc_priv_to_dev(priv);
04700027	156	struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
303c3be4	157	struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
415f1cb2	158	struct of_phandle_args args;
415f1cb2 KM	159	int ret;
415f1cb2 KM	160
415f1cb2 KM	161	/*
	162	* Get node via "sound-dai = <&phandle port>"
	163	* it will be used as xxx_of_node on soc_bind_dai_link()
	164	*/
	165	ret = of_parse_phandle_with_args(np, "sound-dai",
	166	"#sound-dai-cells", 0, &args);
	167	if (ret)
	168	return ret;
	169
6dad9758 KM	170	/* Parse TDM slot */
	171	ret = snd_soc_of_parse_tdm_slot(np,
	172	&dai_props->tx_slot_mask,
	173	&dai_props->rx_slot_mask,
	174	&dai_props->slots,
	175	&dai_props->slot_width);
	176	if (ret)
	177	return ret;
	178
04700027 KM	179	if (is_fe) {
	180	/* BE is dummy */
	181	dai_link->codec_of_node = NULL;
	182	dai_link->codec_dai_name = "snd-soc-dummy-dai";
	183	dai_link->codec_name = "snd-soc-dummy";
	184
	185	/* FE settings */
	186	dai_link->dynamic = 1;
	187	dai_link->dpcm_merged_format = 1;
	188	dai_link->cpu_of_node = args.np;
575f1f92 KM	189	ret = snd_soc_of_get_dai_name(np, &dai_link->cpu_dai_name);
	190	if (ret < 0)
	191	return ret;
04700027	192
c9a235da KM	193	ret = asoc_simple_card_parse_clk_cpu(np, dai_link, dai_props);
	194	if (ret < 0)
	195	return ret;
	196
8a99a6bd KM	197	ret = asoc_simple_card_set_dailink_name(dev, dai_link,
	198	"fe.%s",
	199	dai_link->cpu_dai_name);
	200	if (ret < 0)
	201	return ret;
04700027 KM	202
	203	/*
	204	* In soc_bind_dai_link() will check cpu name after
	205	* of_node matching if dai_link has cpu_dai_name.
	206	* but, it will never match if name was created by
	207	* fmt_single_name() remove cpu_dai_name if cpu_args
	208	* was 0. See:
	209	* fmt_single_name()
	210	* fmt_multiple_name()
	211	*/
	212	if (!args.args_count)
	213	dai_link->cpu_dai_name = NULL;
	214	} else {
04700027	215	const struct rsrc_card_of_data *of_data;
415f1cb2	216
6a16c176	217	of_data = of_device_get_match_data(dev);
415f1cb2	218
04700027 KM	219	/* FE is dummy */
	220	dai_link->cpu_of_node = NULL;
	221	dai_link->cpu_dai_name = "snd-soc-dummy-dai";
	222	dai_link->cpu_name = "snd-soc-dummy";
415f1cb2	223
04700027 KM	224	/* BE settings */
	225	dai_link->no_pcm = 1;
	226	dai_link->be_hw_params_fixup = rsrc_card_be_hw_params_fixup;
	227	dai_link->codec_of_node = args.np;
575f1f92 KM	228	ret = snd_soc_of_get_dai_name(np, &dai_link->codec_dai_name);
	229	if (ret < 0)
	230	return ret;
04700027	231
c9a235da KM	232	ret = asoc_simple_card_parse_clk_codec(np, dai_link, dai_props);
	233	if (ret < 0)
	234	return ret;
	235
8a99a6bd KM	236	ret = asoc_simple_card_set_dailink_name(dev, dai_link,
	237	"be.%s",
	238	dai_link->codec_dai_name);
	239	if (ret < 0)
	240	return ret;
	241
04700027	242	/* additional name prefix */
b7419dd7 KM	243	if (of_data) {
	244	priv->codec_conf.of_node = dai_link->codec_of_node;
	245	priv->codec_conf.name_prefix = of_data->prefix;
	246	} else {
	247	snd_soc_of_parse_audio_prefix(&priv->snd_card,
	248	&priv->codec_conf,
	249	dai_link->codec_of_node,
	250	"audio-prefix");
	251	}
415f1cb2 KM	252	}
415f1cb2 KM	253
04700027 KM	254	/* Simple Card assumes platform == cpu */
	255	dai_link->platform_of_node = dai_link->cpu_of_node;
	256	dai_link->dpcm_playback = 1;
	257	dai_link->dpcm_capture = 1;
04700027 KM	258	dai_link->ops = &rsrc_card_ops;
	259	dai_link->init = rsrc_card_dai_init;
	260
04700027	261	dev_dbg(dev, "\t%s / %04x / %d\n",
8a99a6bd	262	dai_link->name,
ae638b72	263	dai_link->dai_fmt,
04700027	264	dai_props->sysclk);
415f1cb2	265
c9a235da	266	return 0;
415f1cb2 KM	267	}
415f1cb2 KM	268
af998f85 KM	269	static int rsrc_card_dai_link_of(struct device_node *node,
	270	struct rsrc_card_priv *priv)
	271	{
d6a4a9a4	272	struct device *dev = rsrc_priv_to_dev(priv);
af998f85 KM	273	struct snd_soc_dai_link *dai_link;
	274	struct device_node *np;
	275	unsigned int daifmt = 0;
	276	int ret, i;
	277	bool is_fe;
	278
	279	/* find 1st codec */
	280	i = 0;
	281	for_each_child_of_node(node, np) {
	282	dai_link = rsrc_priv_to_link(priv, i);
	283
	284	if (strcmp(np->name, "codec") == 0) {
d6a4a9a4 KM	285	ret = asoc_simple_card_parse_daifmt(dev, node, np,
d6a4a9a4 KM	286	NULL, &daifmt);
af998f85 KM	287	if (ret < 0)
	288	return ret;
	289	break;
	290	}
	291	i++;
	292	}
	293
	294	i = 0;
	295	for_each_child_of_node(node, np) {
	296	dai_link = rsrc_priv_to_link(priv, i);
	297	dai_link->dai_fmt = daifmt;
	298
	299	is_fe = false;
	300	if (strcmp(np->name, "cpu") == 0)
	301	is_fe = true;
	302
c9a235da	303	ret = rsrc_card_parse_links(np, priv, i, is_fe);
af998f85 KM	304	if (ret < 0)
	305	return ret;
	306	i++;
	307	}
	308
	309	return 0;
	310	}
	311
415f1cb2	312	static int rsrc_card_parse_of(struct device_node *node,
3c7e64dd KM	313	struct rsrc_card_priv *priv,
3c7e64dd KM	314	struct device *dev)
415f1cb2	315	{
6a16c176	316	const struct rsrc_card_of_data *of_data = of_device_get_match_data(dev);
303c3be4	317	struct asoc_simple_dai *props;
3433bf07	318	struct snd_soc_dai_link *links;
415f1cb2	319	int ret;
af998f85	320	int num;
415f1cb2 KM	321
	322	if (!node)
	323	return -EINVAL;
	324
3433bf07 KM	325	num = of_get_child_count(node);
	326	props = devm_kzalloc(dev, sizeof(props) num, GFP_KERNEL);
	327	links = devm_kzalloc(dev, sizeof(links) num, GFP_KERNEL);
	328	if (!props \|\| !links)
	329	return -ENOMEM;
	330
	331	priv->dai_props = props;
	332	priv->dai_link = links;
3433bf07	333
3c7e64dd KM	334	/* Init snd_soc_card */
	335	priv->snd_card.owner = THIS_MODULE;
	336	priv->snd_card.dev = dev;
	337	priv->snd_card.dai_link = priv->dai_link;
3433bf07	338	priv->snd_card.num_links = num;
3c7e64dd KM	339	priv->snd_card.codec_conf = &priv->codec_conf;
3c7e64dd KM	340	priv->snd_card.num_configs = 1;
b7419dd7 KM	341
	342	if (of_data) {
	343	priv->snd_card.of_dapm_routes = of_data->routes;
	344	priv->snd_card.num_of_dapm_routes = of_data->num_routes;
	345	} else {
	346	snd_soc_of_parse_audio_routing(&priv->snd_card,
	347	"audio-routing");
	348	}
415f1cb2	349
af7e2be9 KM	350	/* sampling rate convert */
	351	of_property_read_u32(node, "convert-rate", &priv->convert_rate);
	352
f90432fc KM	353	/* channels transfer */
	354	of_property_read_u32(node, "convert-channels", &priv->convert_channels);
	355
	356	dev_dbg(dev, "New rsrc-audio-card: %s\n",
	357	priv->snd_card.name ? priv->snd_card.name : "");
	358	dev_dbg(dev, "SRC : convert_rate %d\n", priv->convert_rate);
	359	dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels);
415f1cb2	360
af998f85 KM	361	ret = rsrc_card_dai_link_of(node, priv);
	362	if (ret < 0)
	363	return ret;
415f1cb2	364
53ae918f KM	365	ret = asoc_simple_card_parse_card_name(&priv->snd_card, "card-");
	366	if (ret < 0)
	367	return ret;
415f1cb2 KM	368
	369	return 0;
	370	}
	371
	372	/* Decrease the reference count of the device nodes */
	373	static int rsrc_card_unref(struct snd_soc_card *card)
	374	{
	375	struct snd_soc_dai_link *dai_link;
	376	int num_links;
	377
	378	for (num_links = 0, dai_link = card->dai_link;
	379	num_links < card->num_links;
	380	num_links++, dai_link++) {
	381	of_node_put(dai_link->cpu_of_node);
	382	of_node_put(dai_link->codec_of_node);
	383	}
	384	return 0;
	385	}
	386
	387	static int rsrc_card_probe(struct platform_device *pdev)
	388	{
	389	struct rsrc_card_priv *priv;
415f1cb2 KM	390	struct device_node *np = pdev->dev.of_node;
	391	struct device *dev = &pdev->dev;
	392	int ret;
	393
	394	/* Allocate the private data */
	395	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	396	if (!priv)
	397	return -ENOMEM;
	398
3c7e64dd	399	ret = rsrc_card_parse_of(np, priv, dev);
415f1cb2 KM	400	if (ret < 0) {
	401	if (ret != -EPROBE_DEFER)
	402	dev_err(dev, "parse error %d\n", ret);
	403	goto err;
	404	}
	405
	406	snd_soc_card_set_drvdata(&priv->snd_card, priv);
	407
	408	ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
	409	if (ret >= 0)
	410	return ret;
	411	err:
	412	rsrc_card_unref(&priv->snd_card);
	413
	414	return ret;
	415	}
	416
	417	static int rsrc_card_remove(struct platform_device *pdev)
	418	{
	419	struct snd_soc_card *card = platform_get_drvdata(pdev);
	420
	421	return rsrc_card_unref(card);
	422	}
	423
	424	static struct platform_driver rsrc_card = {
	425	.driver = {
	426	.name = "renesas-src-audio-card",
	427	.of_match_table = rsrc_card_of_match,
	428	},
	429	.probe = rsrc_card_probe,
	430	.remove = rsrc_card_remove,
	431	};
	432
	433	module_platform_driver(rsrc_card);
	434
	435	MODULE_ALIAS("platform:renesas-src-audio-card");
	436	MODULE_LICENSE("GPL");
	437	MODULE_DESCRIPTION("Renesas Sampling Rate Convert Sound Card");
	438	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");