[deliverable/linux.git] / sound / soc / generic / simple-card.c

/*
 * ASoC simple sound card support
 *
 * Copyright (C) 2012 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 <linux/clk.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/simple_card.h>
#include <sound/soc-dai.h>
#include <sound/soc.h>

struct simple_card_data {
	struct snd_soc_card snd_card;
	struct simple_dai_props {
		struct asoc_simple_dai cpu_dai;
		struct asoc_simple_dai codec_dai;
	} *dai_props;
	struct snd_soc_dai_link dai_link[];	/* dynamically allocated */
};

static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
				       struct asoc_simple_dai *set)
{
	int ret;

	if (set->fmt) {
		ret = snd_soc_dai_set_fmt(dai, set->fmt);
		if (ret && ret != -ENOTSUPP) {
			dev_err(dai->dev, "simple-card: set_fmt error\n");
			goto err;
		}
	}

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

	if (set->slots) {
		ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
						set->slots,
						set->slot_width);
		if (ret && ret != -ENOTSUPP) {
			dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
			goto err;
		}
	}

	ret = 0;

err:
	return ret;
}

static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
	struct simple_card_data *priv =
				snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *codec = rtd->codec_dai;
	struct snd_soc_dai *cpu = rtd->cpu_dai;
	int ret;

	ret = __asoc_simple_card_dai_init(codec, &priv->dai_props->codec_dai);
	if (ret < 0)
		return ret;

	ret = __asoc_simple_card_dai_init(cpu, &priv->dai_props->cpu_dai);
	if (ret < 0)
		return ret;

	return 0;
}

static int
asoc_simple_card_sub_parse_of(struct device_node *np,
			      unsigned int daifmt,
			      struct asoc_simple_dai *dai,
			      const struct device_node **p_node,
			      const char **name)
{
	struct device_node *node;
	struct clk *clk;
	int ret;

	/*
	 * get node via "sound-dai = <&phandle port>"
	 * it will be used as xxx_of_node on soc_bind_dai_link()
	 */
	node = of_parse_phandle(np, "sound-dai", 0);
	if (!node)
		return -ENODEV;
	*p_node = node;

	/* get dai->name */
	ret = snd_soc_of_get_dai_name(np, name);
	if (ret < 0)
		return ret;

	/* parse TDM slot */
	ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
	if (ret)
		return ret;

	/*
	 * bitclock-inversion, frame-inversion
	 * bitclock-master,    frame-master
	 * and specific "format" if it has
	 */
	dai->fmt = snd_soc_of_parse_daifmt(np, NULL);
	dai->fmt |= daifmt;

	/*
	 * dai->sysclk come from
	 *  "clocks = <&xxx>" (if system has common clock)
	 *  or "system-clock-frequency = <xxx>"
	 *  or device's module clock.
	 */
	if (of_property_read_bool(np, "clocks")) {
		clk = of_clk_get(np, 0);
		if (IS_ERR(clk)) {
			ret = PTR_ERR(clk);
			return ret;
		}

		dai->sysclk = clk_get_rate(clk);
	} else if (of_property_read_bool(np, "system-clock-frequency")) {
		of_property_read_u32(np,
				     "system-clock-frequency",
				     &dai->sysclk);
	} else {
		clk = of_clk_get(node, 0);
		if (!IS_ERR(clk))
			dai->sysclk = clk_get_rate(clk);
	}

	return 0;
}

static int asoc_simple_card_parse_of(struct device_node *node,
				     struct simple_card_data *priv,
				     struct device *dev)
{
	struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
	struct asoc_simple_dai *codec_dai = &priv->dai_props->codec_dai;
	struct asoc_simple_dai *cpu_dai = &priv->dai_props->cpu_dai;
	struct device_node *np;
	char *name;
	unsigned int daifmt;
	int ret;

	/* parsing the card name from DT */
	snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");

	/* get CPU/CODEC common format via simple-audio-card,format */
	daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,") &
		(SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK);

	/* off-codec widgets */
	if (of_property_read_bool(node, "simple-audio-card,widgets")) {
		ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
					"simple-audio-card,widgets");
		if (ret)
			return ret;
	}

	/* DAPM routes */
	if (of_property_read_bool(node, "simple-audio-card,routing")) {
		ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
					"simple-audio-card,routing");
		if (ret)
			return ret;
	}

	/* CPU sub-node */
	ret = -EINVAL;
	np = of_get_child_by_name(node, "simple-audio-card,cpu");
	if (np) {
		ret = asoc_simple_card_sub_parse_of(np, daifmt,
						  cpu_dai,
						  &dai_link->cpu_of_node,
						  &dai_link->cpu_dai_name);
		of_node_put(np);
	}
	if (ret < 0)
		return ret;

	/* CODEC sub-node */
	ret = -EINVAL;
	np = of_get_child_by_name(node, "simple-audio-card,codec");
	if (np) {
		ret = asoc_simple_card_sub_parse_of(np, daifmt,
						  codec_dai,
						  &dai_link->codec_of_node,
						  &dai_link->codec_dai_name);
		of_node_put(np);
	}
	if (ret < 0)
		return ret;

	/*
	 * overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC
	 * while the other bits should be identical unless buggy SW/HW design.
	 */
	cpu_dai->fmt = codec_dai->fmt;

	if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
		return -EINVAL;

	/* card name is created from CPU/CODEC dai name */
	name = devm_kzalloc(dev,
			    strlen(dai_link->cpu_dai_name)   +
			    strlen(dai_link->codec_dai_name) + 2,
			    GFP_KERNEL);
	sprintf(name, "%s-%s", dai_link->cpu_dai_name,
				dai_link->codec_dai_name);
	if (!priv->snd_card.name)
		priv->snd_card.name = name;
	dai_link->name = dai_link->stream_name = name;

	/* simple-card assumes platform == cpu */
	dai_link->platform_of_node = dai_link->cpu_of_node;

	dev_dbg(dev, "card-name : %s\n", name);
	dev_dbg(dev, "platform : %04x\n", daifmt);
	dev_dbg(dev, "cpu : %s / %04x / %d\n",
		dai_link->cpu_dai_name,
		cpu_dai->fmt,
		cpu_dai->sysclk);
	dev_dbg(dev, "codec : %s / %04x / %d\n",
		dai_link->codec_dai_name,
		codec_dai->fmt,
		codec_dai->sysclk);

	/*
	 * 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 to escape name matching.
	 * see
	 *	fmt_single_name()
	 *	fmt_multiple_name()
	 */
	dai_link->cpu_dai_name = NULL;

	return 0;
}

/* update the reference count of the devices nodes at end of probe */
static int asoc_simple_card_unref(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct snd_soc_dai_link *dai_link;
	struct device_node *np;
	int num_links;

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

static int asoc_simple_card_probe(struct platform_device *pdev)
{
	struct simple_card_data *priv;
	struct snd_soc_dai_link *dai_link;
	struct device_node *np = pdev->dev.of_node;
	struct device *dev = &pdev->dev;
	int ret;

	/* allocate the private data and the DAI link array */
	priv = devm_kzalloc(dev,
			sizeof(*priv) + sizeof(*dai_link),
			GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	/*
	 * init snd_soc_card
	 */
	priv->snd_card.owner = THIS_MODULE;
	priv->snd_card.dev = dev;
	dai_link = priv->dai_link;
	priv->snd_card.dai_link = dai_link;
	priv->snd_card.num_links = 1;

	/* get room for the other properties */
	priv->dai_props = devm_kzalloc(dev,
			sizeof(*priv->dai_props),
			GFP_KERNEL);
	if (!priv->dai_props)
		return -ENOMEM;

	if (np && of_device_is_available(np)) {

		ret = asoc_simple_card_parse_of(np, priv, dev);
		if (ret < 0) {
			if (ret != -EPROBE_DEFER)
				dev_err(dev, "parse error %d\n", ret);
			goto err;
		}
	} else {
		struct asoc_simple_card_info *cinfo;

		cinfo = dev->platform_data;
		if (!cinfo) {
			dev_err(dev, "no info for asoc-simple-card\n");
			return -EINVAL;
		}

		if (!cinfo->name	||
		    !cinfo->codec_dai.name	||
		    !cinfo->codec	||
		    !cinfo->platform	||
		    !cinfo->cpu_dai.name) {
			dev_err(dev, "insufficient asoc_simple_card_info settings\n");
			return -EINVAL;
		}

		priv->snd_card.name	= (cinfo->card) ? cinfo->card : cinfo->name;
		dai_link->name		= cinfo->name;
		dai_link->stream_name	= cinfo->name;
		dai_link->platform_name	= cinfo->platform;
		dai_link->codec_name	= cinfo->codec;
		dai_link->cpu_dai_name	= cinfo->cpu_dai.name;
		dai_link->codec_dai_name = cinfo->codec_dai.name;
		memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
					sizeof(priv->dai_props->cpu_dai));
		memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
					sizeof(priv->dai_props->codec_dai));

		priv->dai_props->cpu_dai.fmt	|= cinfo->daifmt;
		priv->dai_props->codec_dai.fmt	|= cinfo->daifmt;
	}

	/*
	 * init snd_soc_dai_link
	 */
	dai_link->init = asoc_simple_card_dai_init;

	snd_soc_card_set_drvdata(&priv->snd_card, priv);

	ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);

err:
	asoc_simple_card_unref(pdev);
	return ret;
}

static const struct of_device_id asoc_simple_of_match[] = {
	{ .compatible = "simple-audio-card", },
	{},
};
MODULE_DEVICE_TABLE(of, asoc_simple_of_match);

static struct platform_driver asoc_simple_card = {
	.driver = {
		.name	= "asoc-simple-card",
		.owner = THIS_MODULE,
		.of_match_table = asoc_simple_of_match,
	},
	.probe		= asoc_simple_card_probe,
};

module_platform_driver(asoc_simple_card);

MODULE_ALIAS("platform:asoc-simple-card");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ASoC Simple Sound Card");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
Commit	Line	Data
f2390880 KM	1	/*
	2	* ASoC simple sound card support
	3	*
	4	* Copyright (C) 2012 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	*/
fa558c28	11	#include <linux/clk.h>
6ff62eed	12	#include <linux/device.h>
f2390880	13	#include <linux/module.h>
fa558c28	14	#include <linux/of.h>
f2390880	15	#include <linux/platform_device.h>
ca919fe4	16	#include <linux/string.h>
f2390880	17	#include <sound/simple_card.h>
6ff62eed XL	18	#include <sound/soc-dai.h>
6ff62eed XL	19	#include <sound/soc.h>
f2390880	20
45fce594 JFM	21	struct simple_card_data {
45fce594 JFM	22	struct snd_soc_card snd_card;
cf7dc23c JFM	23	struct simple_dai_props {
	24	struct asoc_simple_dai cpu_dai;
	25	struct asoc_simple_dai codec_dai;
	26	} *dai_props;
	27	struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
45fce594 JFM	28	};
45fce594 JFM	29
a4a2992c	30	static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
30d0341e	31	struct asoc_simple_dai *set)
a4a2992c	32	{
4763ebe2	33	int ret;
a4a2992c	34
30d0341e XL	35	if (set->fmt) {
30d0341e XL	36	ret = snd_soc_dai_set_fmt(dai, set->fmt);
4763ebe2 XL	37	if (ret && ret != -ENOTSUPP) {
	38	dev_err(dai->dev, "simple-card: set_fmt error\n");
	39	goto err;
	40	}
e244bb9b KM	41	}
e244bb9b KM	42
4763ebe2	43	if (set->sysclk) {
a4a2992c	44	ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
4763ebe2 XL	45	if (ret && ret != -ENOTSUPP) {
	46	dev_err(dai->dev, "simple-card: set_sysclk error\n");
	47	goto err;
	48	}
	49	}
	50
6ff62eed XL	51	if (set->slots) {
	52	ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
	53	set->slots,
	54	set->slot_width);
	55	if (ret && ret != -ENOTSUPP) {
	56	dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
	57	goto err;
	58	}
	59	}
	60
4763ebe2	61	ret = 0;
a4a2992c	62
4763ebe2	63	err:
a4a2992c KM	64	return ret;
	65	}
	66
f2390880 KM	67	static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
f2390880 KM	68	{
b367a325	69	struct simple_card_data *priv =
ba194a4d	70	snd_soc_card_get_drvdata(rtd->card);
f2390880 KM	71	struct snd_soc_dai *codec = rtd->codec_dai;
f2390880 KM	72	struct snd_soc_dai *cpu = rtd->cpu_dai;
f2390880 KM	73	int ret;
f2390880 KM	74
cf7dc23c	75	ret = __asoc_simple_card_dai_init(codec, &priv->dai_props->codec_dai);
a4a2992c KM	76	if (ret < 0)
a4a2992c KM	77	return ret;
f2390880	78
cf7dc23c	79	ret = __asoc_simple_card_dai_init(cpu, &priv->dai_props->cpu_dai);
a4a2992c KM	80	if (ret < 0)
a4a2992c KM	81	return ret;
f2390880 KM	82
	83	return 0;
	84	}
	85
fa558c28 KM	86	static int
fa558c28 KM	87	asoc_simple_card_sub_parse_of(struct device_node *np,
30d0341e	88	unsigned int daifmt,
fa558c28	89	struct asoc_simple_dai *dai,
52008472 JFM	90	const struct device_node **p_node,
52008472 JFM	91	const char **name)
fa558c28	92	{
201a0eac	93	struct device_node *node;
fa558c28 KM	94	struct clk *clk;
	95	int ret;
	96
	97	/*
	98	* get node via "sound-dai = <&phandle port>"
	99	* it will be used as xxx_of_node on soc_bind_dai_link()
	100	*/
201a0eac JFM	101	node = of_parse_phandle(np, "sound-dai", 0);
201a0eac JFM	102	if (!node)
fa558c28	103	return -ENODEV;
201a0eac	104	*p_node = node;
fa558c28 KM	105
fa558c28 KM	106	/* get dai->name */
52008472	107	ret = snd_soc_of_get_dai_name(np, name);
fa558c28	108	if (ret < 0)
e512e001	109	return ret;
fa558c28	110
6ff62eed XL	111	/* parse TDM slot */
	112	ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
	113	if (ret)
e512e001	114	return ret;
6ff62eed	115
fa558c28 KM	116	/*
	117	* bitclock-inversion, frame-inversion
	118	* bitclock-master, frame-master
	119	* and specific "format" if it has
	120	*/
	121	dai->fmt = snd_soc_of_parse_daifmt(np, NULL);
30d0341e	122	dai->fmt \|= daifmt;
fa558c28 KM	123
	124	/*
	125	* dai->sysclk come from
	126	* "clocks = <&xxx>" (if system has common clock)
	127	* or "system-clock-frequency = <xxx>"
71467e46	128	* or device's module clock.
fa558c28	129	*/
71467e46 XL	130	if (of_property_read_bool(np, "clocks")) {
	131	clk = of_clk_get(np, 0);
	132	if (IS_ERR(clk)) {
	133	ret = PTR_ERR(clk);
e512e001	134	return ret;
71467e46 XL	135	}
	136
	137	dai->sysclk = clk_get_rate(clk);
	138	} else if (of_property_read_bool(np, "system-clock-frequency")) {
fa558c28 KM	139	of_property_read_u32(np,
	140	"system-clock-frequency",
	141	&dai->sysclk);
71467e46	142	} else {
201a0eac	143	clk = of_clk_get(node, 0);
e2a19ac6 XL	144	if (!IS_ERR(clk))
e2a19ac6 XL	145	dai->sysclk = clk_get_rate(clk);
71467e46	146	}
fa558c28	147
e512e001	148	return 0;
fa558c28 KM	149	}
	150
	151	static int asoc_simple_card_parse_of(struct device_node *node,
b367a325	152	struct simple_card_data *priv,
201a0eac	153	struct device *dev)
fa558c28	154	{
b367a325	155	struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
cf7dc23c JFM	156	struct asoc_simple_dai *codec_dai = &priv->dai_props->codec_dai;
cf7dc23c JFM	157	struct asoc_simple_dai *cpu_dai = &priv->dai_props->cpu_dai;
fa558c28 KM	158	struct device_node *np;
fa558c28 KM	159	char *name;
c56c4d74	160	unsigned int daifmt;
d4c22094	161	int ret;
fa558c28	162
2772555b XL	163	/* parsing the card name from DT */
	164	snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
	165
fa558c28	166	/* get CPU/CODEC common format via simple-audio-card,format */
c56c4d74	167	daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,") &
fa558c28 KM	168	(SND_SOC_DAIFMT_FORMAT_MASK \| SND_SOC_DAIFMT_INV_MASK);
fa558c28 KM	169
9d681f5b XL	170	/* off-codec widgets */
	171	if (of_property_read_bool(node, "simple-audio-card,widgets")) {
	172	ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
	173	"simple-audio-card,widgets");
	174	if (ret)
	175	return ret;
	176	}
	177
d4c22094	178	/* DAPM routes */
8c0b8230	179	if (of_property_read_bool(node, "simple-audio-card,routing")) {
b367a325	180	ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
8c0b8230	181	"simple-audio-card,routing");
f87a3e82 XL	182	if (ret)
	183	return ret;
	184	}
d4c22094	185
fa558c28 KM	186	/* CPU sub-node */
	187	ret = -EINVAL;
	188	np = of_get_child_by_name(node, "simple-audio-card,cpu");
e512e001	189	if (np) {
c56c4d74	190	ret = asoc_simple_card_sub_parse_of(np, daifmt,
46c39cae	191	cpu_dai,
52008472 JFM	192	&dai_link->cpu_of_node,
52008472 JFM	193	&dai_link->cpu_dai_name);
e512e001 JFM	194	of_node_put(np);
e512e001 JFM	195	}
fa558c28 KM	196	if (ret < 0)
	197	return ret;
	198
	199	/* CODEC sub-node */
	200	ret = -EINVAL;
	201	np = of_get_child_by_name(node, "simple-audio-card,codec");
e512e001	202	if (np) {
c56c4d74	203	ret = asoc_simple_card_sub_parse_of(np, daifmt,
46c39cae	204	codec_dai,
52008472 JFM	205	&dai_link->codec_of_node,
52008472 JFM	206	&dai_link->codec_dai_name);
e512e001 JFM	207	of_node_put(np);
e512e001 JFM	208	}
fa558c28 KM	209	if (ret < 0)
	210	return ret;
	211
46c39cae NC	212	/*
	213	* overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC
	214	* while the other bits should be identical unless buggy SW/HW design.
	215	*/
	216	cpu_dai->fmt = codec_dai->fmt;
	217
52008472	218	if (!dai_link->cpu_dai_name \|\| !dai_link->codec_dai_name)
dd41e0c4 XL	219	return -EINVAL;
dd41e0c4 XL	220
fa558c28 KM	221	/* card name is created from CPU/CODEC dai name */
fa558c28 KM	222	name = devm_kzalloc(dev,
52008472 JFM	223	strlen(dai_link->cpu_dai_name) +
52008472 JFM	224	strlen(dai_link->codec_dai_name) + 2,
fa558c28	225	GFP_KERNEL);
52008472 JFM	226	sprintf(name, "%s-%s", dai_link->cpu_dai_name,
52008472 JFM	227	dai_link->codec_dai_name);
2772555b XL	228	if (!priv->snd_card.name)
2772555b XL	229	priv->snd_card.name = name;
5ca8ba41	230	dai_link->name = dai_link->stream_name = name;
fa558c28 KM	231
fa558c28 KM	232	/* simple-card assumes platform == cpu */
5ca8ba41	233	dai_link->platform_of_node = dai_link->cpu_of_node;
fa558c28	234
2bee9914	235	dev_dbg(dev, "card-name : %s\n", name);
c56c4d74	236	dev_dbg(dev, "platform : %04x\n", daifmt);
fa558c28	237	dev_dbg(dev, "cpu : %s / %04x / %d\n",
52008472	238	dai_link->cpu_dai_name,
46c39cae NC	239	cpu_dai->fmt,
46c39cae NC	240	cpu_dai->sysclk);
fa558c28	241	dev_dbg(dev, "codec : %s / %04x / %d\n",
52008472	242	dai_link->codec_dai_name,
46c39cae NC	243	codec_dai->fmt,
46c39cae NC	244	codec_dai->sysclk);
fa558c28	245
f687d900 KM	246	/*
	247	* soc_bind_dai_link() will check cpu name
	248	* after of_node matching if dai_link has cpu_dai_name.
	249	* but, it will never match if name was created by fmt_single_name()
	250	* remove cpu_dai_name to escape name matching.
	251	* see
	252	* fmt_single_name()
	253	* fmt_multiple_name()
	254	*/
	255	dai_link->cpu_dai_name = NULL;
	256
fa558c28 KM	257	return 0;
	258	}
	259
e512e001 JFM	260	/* update the reference count of the devices nodes at end of probe */
	261	static int asoc_simple_card_unref(struct platform_device *pdev)
	262	{
	263	struct snd_soc_card *card = platform_get_drvdata(pdev);
	264	struct snd_soc_dai_link *dai_link;
	265	struct device_node *np;
	266	int num_links;
	267
	268	for (num_links = 0, dai_link = card->dai_link;
	269	num_links < card->num_links;
	270	num_links++, dai_link++) {
	271	np = (struct device_node *) dai_link->cpu_of_node;
	272	if (np)
	273	of_node_put(np);
	274	np = (struct device_node *) dai_link->codec_of_node;
	275	if (np)
	276	of_node_put(np);
	277	}
	278	return 0;
	279	}
	280
f2390880 KM	281	static int asoc_simple_card_probe(struct platform_device *pdev)
f2390880 KM	282	{
45fce594	283	struct simple_card_data *priv;
5ca8ba41	284	struct snd_soc_dai_link *dai_link;
fa558c28	285	struct device_node *np = pdev->dev.of_node;
f89983ef	286	struct device *dev = &pdev->dev;
ca919fe4	287	int ret;
f2390880	288
cf7dc23c JFM	289	/* allocate the private data and the DAI link array */
	290	priv = devm_kzalloc(dev,
	291	sizeof(priv) + sizeof(dai_link),
	292	GFP_KERNEL);
ca65b492	293	if (!priv)
ca919fe4 XL	294	return -ENOMEM;
ca919fe4 XL	295
201a0eac JFM	296	/*
	297	* init snd_soc_card
	298	*/
ca65b492 JFM	299	priv->snd_card.owner = THIS_MODULE;
ca65b492 JFM	300	priv->snd_card.dev = dev;
cf7dc23c	301	dai_link = priv->dai_link;
ca65b492 JFM	302	priv->snd_card.dai_link = dai_link;
ca65b492 JFM	303	priv->snd_card.num_links = 1;
201a0eac	304
cf7dc23c JFM	305	/* get room for the other properties */
	306	priv->dai_props = devm_kzalloc(dev,
	307	sizeof(*priv->dai_props),
	308	GFP_KERNEL);
	309	if (!priv->dai_props)
	310	return -ENOMEM;
	311
fa558c28	312	if (np && of_device_is_available(np)) {
ca919fe4	313
ca65b492	314	ret = asoc_simple_card_parse_of(np, priv, dev);
ca919fe4 XL	315	if (ret < 0) {
	316	if (ret != -EPROBE_DEFER)
	317	dev_err(dev, "parse error %d\n", ret);
e512e001	318	goto err;
fa558c28 KM	319	}
fa558c28 KM	320	} else {
ca65b492 JFM	321	struct asoc_simple_card_info *cinfo;
	322
	323	cinfo = dev->platform_data;
	324	if (!cinfo) {
34787d0a XL	325	dev_err(dev, "no info for asoc-simple-card\n");
	326	return -EINVAL;
	327	}
fa558c28	328
7722f830	329	if (!cinfo->name \|\|
7722f830 JFM	330	!cinfo->codec_dai.name \|\|
	331	!cinfo->codec \|\|
	332	!cinfo->platform \|\|
	333	!cinfo->cpu_dai.name) {
	334	dev_err(dev, "insufficient asoc_simple_card_info settings\n");
	335	return -EINVAL;
	336	}
2bee9914	337
12ffa6fc	338	priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
5ca8ba41 JFM	339	dai_link->name = cinfo->name;
	340	dai_link->stream_name = cinfo->name;
	341	dai_link->platform_name = cinfo->platform;
	342	dai_link->codec_name = cinfo->codec;
52008472 JFM	343	dai_link->cpu_dai_name = cinfo->cpu_dai.name;
52008472 JFM	344	dai_link->codec_dai_name = cinfo->codec_dai.name;
cf7dc23c JFM	345	memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
	346	sizeof(priv->dai_props->cpu_dai));
	347	memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
	348	sizeof(priv->dai_props->codec_dai));
81985bd6	349
cf7dc23c JFM	350	priv->dai_props->cpu_dai.fmt \|= cinfo->daifmt;
cf7dc23c JFM	351	priv->dai_props->codec_dai.fmt \|= cinfo->daifmt;
f2390880 KM	352	}
	353
	354	/*
	355	* init snd_soc_dai_link
	356	*/
5ca8ba41	357	dai_link->init = asoc_simple_card_dai_init;
f2390880	358
ca65b492	359	snd_soc_card_set_drvdata(&priv->snd_card, priv);
f2390880	360
e512e001 JFM	361	ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
	362
	363	err:
	364	asoc_simple_card_unref(pdev);
	365	return ret;
f2390880 KM	366	}
f2390880 KM	367
fa558c28 KM	368	static const struct of_device_id asoc_simple_of_match[] = {
	369	{ .compatible = "simple-audio-card", },
	370	{},
	371	};
	372	MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
	373
f2390880 KM	374	static struct platform_driver asoc_simple_card = {
	375	.driver = {
	376	.name = "asoc-simple-card",
c445be35	377	.owner = THIS_MODULE,
fa558c28	378	.of_match_table = asoc_simple_of_match,
f2390880 KM	379	},
f2390880 KM	380	.probe = asoc_simple_card_probe,
f2390880 KM	381	};
	382
	383	module_platform_driver(asoc_simple_card);
	384
c445be35	385	MODULE_ALIAS("platform:asoc-simple-card");
f2390880 KM	386	MODULE_LICENSE("GPL");
	387	MODULE_DESCRIPTION("ASoC Simple Sound Card");
	388	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");