[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 asoc_simple_dai cpu_dai;
	struct asoc_simple_dai codec_dai;
	struct snd_soc_dai_link snd_link;
};

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->codec_dai);
	if (ret < 0)
		return ret;

	ret = __asoc_simple_card_dai_init(cpu, &priv->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->codec_dai;
	struct asoc_simple_dai *cpu_dai = &priv->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;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

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

	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->cpu_dai, &cinfo->cpu_dai,
						sizeof(priv->cpu_dai));
		memcpy(&priv->codec_dai, &cinfo->codec_dai,
						sizeof(priv->codec_dai));

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