[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/gpio.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/jack.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;
	unsigned int mclk_fs;
	int gpio_hp_det;
	int gpio_mic_det;
	struct snd_soc_dai_link dai_link[];	/* dynamically allocated */
};

#define simple_priv_to_dev(priv) ((priv)->snd_card.dev)
#define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
#define simple_priv_to_props(priv, i) ((priv)->dai_props + i)

static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
				      struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
	unsigned int mclk;
	int ret = 0;

	if (priv->mclk_fs) {
		mclk = params_rate(params) * priv->mclk_fs;
		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
					     SND_SOC_CLOCK_IN);
	}

	return ret;
}

static struct snd_soc_ops asoc_simple_card_ops = {
	.hw_params = asoc_simple_card_hw_params,
};

static struct snd_soc_jack simple_card_hp_jack;
static struct snd_soc_jack_pin simple_card_hp_jack_pins[] = {
	{
		.pin = "Headphones",
		.mask = SND_JACK_HEADPHONE,
	},
};
static struct snd_soc_jack_gpio simple_card_hp_jack_gpio = {
	.name = "Headphone detection",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 150,
};

static struct snd_soc_jack simple_card_mic_jack;
static struct snd_soc_jack_pin simple_card_mic_jack_pins[] = {
	{
		.pin = "Mic Jack",
		.mask = SND_JACK_MICROPHONE,
	},
};
static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = {
	.name = "Mic detection",
	.report = SND_JACK_MICROPHONE,
	.debounce_time = 150,
};

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;
	struct simple_dai_props *dai_props;
	int num, ret;

	num = rtd - rtd->card->rtd;
	dai_props = &priv->dai_props[num];
	ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
	if (ret < 0)
		return ret;

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

	if (gpio_is_valid(priv->gpio_hp_det)) {
		snd_soc_jack_new(codec->codec, "Headphones", SND_JACK_HEADPHONE,
				 &simple_card_hp_jack);
		snd_soc_jack_add_pins(&simple_card_hp_jack,
				      ARRAY_SIZE(simple_card_hp_jack_pins),
				      simple_card_hp_jack_pins);

		simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det;
		snd_soc_jack_add_gpios(&simple_card_hp_jack, 1,
				       &simple_card_hp_jack_gpio);
	}

	if (gpio_is_valid(priv->gpio_mic_det)) {
		snd_soc_jack_new(codec->codec, "Mic Jack", SND_JACK_MICROPHONE,
				 &simple_card_mic_jack);
		snd_soc_jack_add_pins(&simple_card_mic_jack,
				      ARRAY_SIZE(simple_card_mic_jack_pins),
				      simple_card_mic_jack_pins);
		simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det;
		snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
				       &simple_card_mic_jack_gpio);
	}
	return 0;
}

static int
asoc_simple_card_sub_parse_of(struct device_node *np,
			      struct asoc_simple_dai *dai,
			      struct device_node **p_node,
			      const char **name,
			      int *args_count)
{
	struct of_phandle_args args;
	struct clk *clk;
	u32 val;
	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;

	*p_node = args.np;

	if (args_count)
		*args_count = args.args_count;

	/* 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;

	/*
	 * Parse 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_u32(np, "system-clock-frequency", &val)) {
		dai->sysclk = val;
	} else {
		clk = of_clk_get(args.np, 0);
		if (!IS_ERR(clk))
			dai->sysclk = clk_get_rate(clk);
	}

	return 0;
}

static int asoc_simple_card_dai_link_of(struct device_node *node,
					struct simple_card_data *priv,
					int idx,
					bool is_top_level_node)
{
	struct device *dev = simple_priv_to_dev(priv);
	struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
	struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
	struct device_node *np = NULL;
	struct device_node *bitclkmaster = NULL;
	struct device_node *framemaster = NULL;
	unsigned int daifmt;
	char *name;
	char prop[128];
	char *prefix = "";
	int ret, cpu_args;

	/* For single DAI link & old style of DT node */
	if (is_top_level_node)
		prefix = "simple-audio-card,";

	daifmt = snd_soc_of_parse_daifmt(node, prefix,
					 &bitclkmaster, &framemaster);
	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;

	snprintf(prop, sizeof(prop), "%scpu", prefix);
	np = of_get_child_by_name(node, prop);
	if (!np) {
		ret = -EINVAL;
		dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
		goto dai_link_of_err;
	}

	ret = asoc_simple_card_sub_parse_of(np, &dai_props->cpu_dai,
					    &dai_link->cpu_of_node,
					    &dai_link->cpu_dai_name,
					    &cpu_args);
	if (ret < 0)
		goto dai_link_of_err;

	dai_props->cpu_dai.fmt = daifmt;
	switch (((np == bitclkmaster) << 4) | (np == framemaster)) {
	case 0x11:
		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS;
		break;
	case 0x10:
		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM;
		break;
	case 0x01:
		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS;
		break;
	default:
		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM;
		break;
	}

	of_node_put(np);
	snprintf(prop, sizeof(prop), "%scodec", prefix);
	np = of_get_child_by_name(node, prop);
	if (!np) {
		ret = -EINVAL;
		dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
		goto dai_link_of_err;
	}

	ret = asoc_simple_card_sub_parse_of(np, &dai_props->codec_dai,
					    &dai_link->codec_of_node,
					    &dai_link->codec_dai_name, NULL);
	if (ret < 0)
		goto dai_link_of_err;

	if (strlen(prefix) && !bitclkmaster && !framemaster) {
		/*
		 * No DAI link level and master setting was found
		 * from sound node level, revert back to legacy DT
		 * parsing and take the settings from codec node.
		 */
		dev_dbg(dev, "%s: Revert to legacy daifmt parsing\n",
			__func__);
		dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt =
			snd_soc_of_parse_daifmt(np, NULL, NULL, NULL) |
			(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
	} else {
		dai_props->codec_dai.fmt = daifmt;
		switch (((np == bitclkmaster) << 4) | (np == framemaster)) {
		case 0x11:
			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM;
			break;
		case 0x10:
			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS;
			break;
		case 0x01:
			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM;
			break;
		default:
			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS;
			break;
		}
	}

	if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
		ret = -EINVAL;
		goto dai_link_of_err;
	}

	/* Simple Card assumes platform == cpu */
	dai_link->platform_of_node = dai_link->cpu_of_node;

	/* DAI link 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);
	dai_link->name = dai_link->stream_name = name;
	dai_link->ops = &asoc_simple_card_ops;
	dai_link->init = asoc_simple_card_dai_init;

	dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
	dev_dbg(dev, "\tcpu : %s / %04x / %d\n",
		dai_link->cpu_dai_name,
		dai_props->cpu_dai.fmt,
		dai_props->cpu_dai.sysclk);
	dev_dbg(dev, "\tcodec : %s / %04x / %d\n",
		dai_link->codec_dai_name,
		dai_props->codec_dai.fmt,
		dai_props->codec_dai.sysclk);

	/*
	 * 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 (!cpu_args)
		dai_link->cpu_dai_name = NULL;

dai_link_of_err:
	of_node_put(np);
	of_node_put(bitclkmaster);
	of_node_put(framemaster);
	return ret;
}

static int asoc_simple_card_parse_of(struct device_node *node,
				     struct simple_card_data *priv)
{
	struct device *dev = simple_priv_to_dev(priv);
	u32 val;
	int ret;

	if (!node)
		return -EINVAL;

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

	/* The 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;
	}

	/* Factor to mclk, used in hw_params() */
	ret = of_property_read_u32(node, "simple-audio-card,mclk-fs", &val);
	if (ret == 0)
		priv->mclk_fs = val;

	dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
		priv->snd_card.name : "");

	/* Single/Muti DAI link(s) & New style of DT node */
	if (of_get_child_by_name(node, "simple-audio-card,dai-link")) {
		struct device_node *np = NULL;
		int i = 0;

		for_each_child_of_node(node, np) {
			dev_dbg(dev, "\tlink %d:\n", i);
			ret = asoc_simple_card_dai_link_of(np, priv,
							   i, false);
			if (ret < 0) {
				of_node_put(np);
				return ret;
			}
			i++;
		}
	} else {
		/* For single DAI link & old style of DT node */
		ret = asoc_simple_card_dai_link_of(node, priv, 0, true);
		if (ret < 0)
			return ret;
	}

	priv->gpio_hp_det = of_get_named_gpio(node,
				"simple-audio-card,hp-det-gpio", 0);
	if (priv->gpio_hp_det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	priv->gpio_mic_det = of_get_named_gpio(node,
				"simple-audio-card,mic-det-gpio", 0);
	if (priv->gpio_mic_det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	if (!priv->snd_card.name)
		priv->snd_card.name = priv->snd_card.dai_link->name;

	return 0;
}

/* Decrease the reference count of the device nodes */
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;
		of_node_put(np);
		np = (struct device_node *) dai_link->codec_of_node;
		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 num_links, ret;

	/* Get the number of DAI links */
	if (np && of_get_child_by_name(np, "simple-audio-card,dai-link"))
		num_links = of_get_child_count(np);
	else
		num_links = 1;

	/* Allocate the private data and the DAI link array */
	priv = devm_kzalloc(dev,
			sizeof(*priv) + sizeof(*dai_link) * num_links,
			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 = num_links;

	priv->gpio_hp_det = -ENOENT;
	priv->gpio_mic_det = -ENOENT;

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

	if (np && of_device_is_available(np)) {

		ret = asoc_simple_card_parse_of(np, priv);
		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;
		dai_link->init		= asoc_simple_card_dai_init;
		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;
	}

	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:
	asoc_simple_card_unref(pdev);
	return ret;
}

static int asoc_simple_card_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct simple_card_data *priv = snd_soc_card_get_drvdata(card);

	if (gpio_is_valid(priv->gpio_hp_det))
		snd_soc_jack_free_gpios(&simple_card_hp_jack, 1,
					&simple_card_hp_jack_gpio);
	if (gpio_is_valid(priv->gpio_mic_det))
		snd_soc_jack_free_gpios(&simple_card_mic_jack, 1,
					&simple_card_mic_jack_gpio);

	return asoc_simple_card_unref(pdev);
}

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,
	.remove = asoc_simple_card_remove,
};

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>
3fe24032	13	#include <linux/gpio.h>
f2390880	14	#include <linux/module.h>
fa558c28	15	#include <linux/of.h>
3fe24032	16	#include <linux/of_gpio.h>
f2390880	17	#include <linux/platform_device.h>
ca919fe4	18	#include <linux/string.h>
3fe24032	19	#include <sound/jack.h>
f2390880	20	#include <sound/simple_card.h>
6ff62eed XL	21	#include <sound/soc-dai.h>
6ff62eed XL	22	#include <sound/soc.h>
f2390880	23
45fce594 JFM	24	struct simple_card_data {
45fce594 JFM	25	struct snd_soc_card snd_card;
cf7dc23c JFM	26	struct simple_dai_props {
	27	struct asoc_simple_dai cpu_dai;
	28	struct asoc_simple_dai codec_dai;
	29	} *dai_props;
2942a0e2	30	unsigned int mclk_fs;
3fe24032 DR	31	int gpio_hp_det;
3fe24032 DR	32	int gpio_mic_det;
cf7dc23c	33	struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
45fce594 JFM	34	};
45fce594 JFM	35
f531913f	36	#define simple_priv_to_dev(priv) ((priv)->snd_card.dev)
9810f537 KM	37	#define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
9810f537 KM	38	#define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
f531913f	39
2942a0e2 AL	40	static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
	41	struct snd_pcm_hw_params *params)
	42	{
	43	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	44	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	45	struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
	46	unsigned int mclk;
	47	int ret = 0;
	48
	49	if (priv->mclk_fs) {
	50	mclk = params_rate(params) * priv->mclk_fs;
	51	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
	52	SND_SOC_CLOCK_IN);
	53	}
	54
	55	return ret;
	56	}
	57
	58	static struct snd_soc_ops asoc_simple_card_ops = {
	59	.hw_params = asoc_simple_card_hw_params,
	60	};
	61
3fe24032 DR	62	static struct snd_soc_jack simple_card_hp_jack;
	63	static struct snd_soc_jack_pin simple_card_hp_jack_pins[] = {
	64	{
	65	.pin = "Headphones",
	66	.mask = SND_JACK_HEADPHONE,
	67	},
	68	};
	69	static struct snd_soc_jack_gpio simple_card_hp_jack_gpio = {
	70	.name = "Headphone detection",
	71	.report = SND_JACK_HEADPHONE,
	72	.debounce_time = 150,
	73	};
	74
	75	static struct snd_soc_jack simple_card_mic_jack;
	76	static struct snd_soc_jack_pin simple_card_mic_jack_pins[] = {
	77	{
	78	.pin = "Mic Jack",
	79	.mask = SND_JACK_MICROPHONE,
	80	},
	81	};
	82	static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = {
	83	.name = "Mic detection",
	84	.report = SND_JACK_MICROPHONE,
	85	.debounce_time = 150,
	86	};
	87
a4a2992c	88	static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
30d0341e	89	struct asoc_simple_dai *set)
a4a2992c	90	{
4763ebe2	91	int ret;
a4a2992c	92
30d0341e XL	93	if (set->fmt) {
30d0341e XL	94	ret = snd_soc_dai_set_fmt(dai, set->fmt);
4763ebe2 XL	95	if (ret && ret != -ENOTSUPP) {
	96	dev_err(dai->dev, "simple-card: set_fmt error\n");
	97	goto err;
	98	}
e244bb9b KM	99	}
e244bb9b KM	100
4763ebe2	101	if (set->sysclk) {
a4a2992c	102	ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
4763ebe2 XL	103	if (ret && ret != -ENOTSUPP) {
	104	dev_err(dai->dev, "simple-card: set_sysclk error\n");
	105	goto err;
	106	}
	107	}
	108
6ff62eed XL	109	if (set->slots) {
	110	ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
	111	set->slots,
	112	set->slot_width);
	113	if (ret && ret != -ENOTSUPP) {
	114	dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
	115	goto err;
	116	}
	117	}
	118
4763ebe2	119	ret = 0;
a4a2992c	120
4763ebe2	121	err:
a4a2992c KM	122	return ret;
	123	}
	124
f2390880 KM	125	static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
f2390880 KM	126	{
781cbebe	127	struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
f2390880 KM	128	struct snd_soc_dai *codec = rtd->codec_dai;
f2390880 KM	129	struct snd_soc_dai *cpu = rtd->cpu_dai;
6a91a17b JFM	130	struct simple_dai_props *dai_props;
6a91a17b JFM	131	int num, ret;
f2390880	132
6a91a17b JFM	133	num = rtd - rtd->card->rtd;
	134	dai_props = &priv->dai_props[num];
	135	ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
a4a2992c KM	136	if (ret < 0)
a4a2992c KM	137	return ret;
f2390880	138
6a91a17b	139	ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
a4a2992c KM	140	if (ret < 0)
a4a2992c KM	141	return ret;
f2390880	142
3fe24032 DR	143	if (gpio_is_valid(priv->gpio_hp_det)) {
	144	snd_soc_jack_new(codec->codec, "Headphones", SND_JACK_HEADPHONE,
	145	&simple_card_hp_jack);
	146	snd_soc_jack_add_pins(&simple_card_hp_jack,
	147	ARRAY_SIZE(simple_card_hp_jack_pins),
	148	simple_card_hp_jack_pins);
	149
	150	simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det;
	151	snd_soc_jack_add_gpios(&simple_card_hp_jack, 1,
	152	&simple_card_hp_jack_gpio);
	153	}
	154
	155	if (gpio_is_valid(priv->gpio_mic_det)) {
	156	snd_soc_jack_new(codec->codec, "Mic Jack", SND_JACK_MICROPHONE,
	157	&simple_card_mic_jack);
	158	snd_soc_jack_add_pins(&simple_card_mic_jack,
	159	ARRAY_SIZE(simple_card_mic_jack_pins),
	160	simple_card_mic_jack_pins);
	161	simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det;
	162	snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
	163	&simple_card_mic_jack_gpio);
	164	}
f2390880 KM	165	return 0;
	166	}
	167
fa558c28 KM	168	static int
	169	asoc_simple_card_sub_parse_of(struct device_node *np,
	170	struct asoc_simple_dai *dai,
8ea21348	171	struct device_node **p_node,
7c7b9cf5 KM	172	const char **name,
7c7b9cf5 KM	173	int *args_count)
fa558c28	174	{
7c7b9cf5	175	struct of_phandle_args args;
fa558c28	176	struct clk *clk;
c7099eb1	177	u32 val;
fa558c28 KM	178	int ret;
	179
	180	/*
0dd4fc3c	181	* Get node via "sound-dai = <&phandle port>"
fa558c28 KM	182	* it will be used as xxx_of_node on soc_bind_dai_link()
fa558c28 KM	183	*/
7c7b9cf5 KM	184	ret = of_parse_phandle_with_args(np, "sound-dai",
	185	"#sound-dai-cells", 0, &args);
	186	if (ret)
	187	return ret;
	188
	189	*p_node = args.np;
	190
	191	if (args_count)
	192	*args_count = args.args_count;
fa558c28	193
0dd4fc3c	194	/* Get dai->name */
52008472	195	ret = snd_soc_of_get_dai_name(np, name);
fa558c28	196	if (ret < 0)
e512e001	197	return ret;
fa558c28	198
0dd4fc3c	199	/* Parse TDM slot */
6ff62eed XL	200	ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
6ff62eed XL	201	if (ret)
e512e001	202	return ret;
6ff62eed	203
fa558c28	204	/*
0dd4fc3c XL	205	* Parse dai->sysclk come from "clocks = <&xxx>"
0dd4fc3c XL	206	* (if system has common clock)
fa558c28	207	* or "system-clock-frequency = <xxx>"
71467e46	208	* or device's module clock.
fa558c28	209	*/
71467e46 XL	210	if (of_property_read_bool(np, "clocks")) {
	211	clk = of_clk_get(np, 0);
	212	if (IS_ERR(clk)) {
	213	ret = PTR_ERR(clk);
e512e001	214	return ret;
71467e46 XL	215	}
	216
	217	dai->sysclk = clk_get_rate(clk);
c7099eb1 JS	218	} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
c7099eb1 JS	219	dai->sysclk = val;
71467e46	220	} else {
88a60e55	221	clk = of_clk_get(args.np, 0);
e2a19ac6 XL	222	if (!IS_ERR(clk))
e2a19ac6 XL	223	dai->sysclk = clk_get_rate(clk);
71467e46	224	}
fa558c28	225
e512e001	226	return 0;
fa558c28 KM	227	}
fa558c28 KM	228
2d82eeb0	229	static int asoc_simple_card_dai_link_of(struct device_node *node,
f531913f	230	struct simple_card_data *priv,
9810f537	231	int idx,
2d82eeb0	232	bool is_top_level_node)
6a91a17b	233	{
f531913f	234	struct device *dev = simple_priv_to_dev(priv);
9810f537 KM	235	struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
9810f537 KM	236	struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
b3ca11ff JS	237	struct device_node *np = NULL;
	238	struct device_node *bitclkmaster = NULL;
	239	struct device_node *framemaster = NULL;
	240	unsigned int daifmt;
	241	char *name;
	242	char prop[128];
	243	char *prefix = "";
7c7b9cf5	244	int ret, cpu_args;
6a91a17b	245
2080437d	246	/* For single DAI link & old style of DT node */
64872215 JS	247	if (is_top_level_node)
64872215 JS	248	prefix = "simple-audio-card,";
b3ca11ff JS	249
	250	daifmt = snd_soc_of_parse_daifmt(node, prefix,
	251	&bitclkmaster, &framemaster);
	252	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
	253
	254	snprintf(prop, sizeof(prop), "%scpu", prefix);
	255	np = of_get_child_by_name(node, prop);
	256	if (!np) {
	257	ret = -EINVAL;
966b8063	258	dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
b3ca11ff	259	goto dai_link_of_err;
6a91a17b	260	}
b3ca11ff JS	261
	262	ret = asoc_simple_card_sub_parse_of(np, &dai_props->cpu_dai,
	263	&dai_link->cpu_of_node,
7c7b9cf5 KM	264	&dai_link->cpu_dai_name,
7c7b9cf5 KM	265	&cpu_args);
6a91a17b	266	if (ret < 0)
b3ca11ff JS	267	goto dai_link_of_err;
	268
	269	dai_props->cpu_dai.fmt = daifmt;
781cbebe	270	switch (((np == bitclkmaster) << 4) \| (np == framemaster)) {
b3ca11ff JS	271	case 0x11:
	272	dai_props->cpu_dai.fmt \|= SND_SOC_DAIFMT_CBS_CFS;
	273	break;
	274	case 0x10:
	275	dai_props->cpu_dai.fmt \|= SND_SOC_DAIFMT_CBS_CFM;
	276	break;
	277	case 0x01:
	278	dai_props->cpu_dai.fmt \|= SND_SOC_DAIFMT_CBM_CFS;
	279	break;
	280	default:
	281	dai_props->cpu_dai.fmt \|= SND_SOC_DAIFMT_CBM_CFM;
	282	break;
	283	}
6a91a17b	284
b3ca11ff JS	285	of_node_put(np);
	286	snprintf(prop, sizeof(prop), "%scodec", prefix);
	287	np = of_get_child_by_name(node, prop);
	288	if (!np) {
	289	ret = -EINVAL;
966b8063	290	dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
b3ca11ff	291	goto dai_link_of_err;
6a91a17b	292	}
b3ca11ff JS	293
	294	ret = asoc_simple_card_sub_parse_of(np, &dai_props->codec_dai,
	295	&dai_link->codec_of_node,
7c7b9cf5	296	&dai_link->codec_dai_name, NULL);
b3ca11ff JS	297	if (ret < 0)
	298	goto dai_link_of_err;
	299
	300	if (strlen(prefix) && !bitclkmaster && !framemaster) {
0dd4fc3c XL	301	/*
	302	* No DAI link level and master setting was found
	303	* from sound node level, revert back to legacy DT
	304	* parsing and take the settings from codec node.
	305	*/
b3ca11ff JS	306	dev_dbg(dev, "%s: Revert to legacy daifmt parsing\n",
	307	__func__);
	308	dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt =
	309	snd_soc_of_parse_daifmt(np, NULL, NULL, NULL) \|
	310	(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
	311	} else {
	312	dai_props->codec_dai.fmt = daifmt;
781cbebe	313	switch (((np == bitclkmaster) << 4) \| (np == framemaster)) {
b3ca11ff JS	314	case 0x11:
	315	dai_props->codec_dai.fmt \|= SND_SOC_DAIFMT_CBM_CFM;
	316	break;
	317	case 0x10:
	318	dai_props->codec_dai.fmt \|= SND_SOC_DAIFMT_CBM_CFS;
	319	break;
	320	case 0x01:
	321	dai_props->codec_dai.fmt \|= SND_SOC_DAIFMT_CBS_CFM;
	322	break;
	323	default:
	324	dai_props->codec_dai.fmt \|= SND_SOC_DAIFMT_CBS_CFS;
	325	break;
	326	}
	327	}
	328
	329	if (!dai_link->cpu_dai_name \|\| !dai_link->codec_dai_name) {
781cbebe NC	330	ret = -EINVAL;
781cbebe NC	331	goto dai_link_of_err;
b3ca11ff JS	332	}
b3ca11ff JS	333
0dd4fc3c	334	/* Simple Card assumes platform == cpu */
b3ca11ff JS	335	dai_link->platform_of_node = dai_link->cpu_of_node;
b3ca11ff JS	336
0dd4fc3c	337	/* DAI link name is created from CPU/CODEC dai name */
b3ca11ff JS	338	name = devm_kzalloc(dev,
	339	strlen(dai_link->cpu_dai_name) +
	340	strlen(dai_link->codec_dai_name) + 2,
	341	GFP_KERNEL);
	342	sprintf(name, "%s-%s", dai_link->cpu_dai_name,
	343	dai_link->codec_dai_name);
	344	dai_link->name = dai_link->stream_name = name;
2942a0e2	345	dai_link->ops = &asoc_simple_card_ops;
a5960bd5	346	dai_link->init = asoc_simple_card_dai_init;
b3ca11ff JS	347
	348	dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
	349	dev_dbg(dev, "\tcpu : %s / %04x / %d\n",
	350	dai_link->cpu_dai_name,
	351	dai_props->cpu_dai.fmt,
	352	dai_props->cpu_dai.sysclk);
	353	dev_dbg(dev, "\tcodec : %s / %04x / %d\n",
	354	dai_link->codec_dai_name,
	355	dai_props->codec_dai.fmt,
	356	dai_props->codec_dai.sysclk);
	357
179949bc	358	/*
0dd4fc3c XL	359	* In soc_bind_dai_link() will check cpu name after
	360	* of_node matching if dai_link has cpu_dai_name.
	361	* but, it will never match if name was created by
	362	* fmt_single_name() remove cpu_dai_name if cpu_args
	363	* was 0. See:
179949bc KM	364	* fmt_single_name()
	365	* fmt_multiple_name()
	366	*/
7c7b9cf5 KM	367	if (!cpu_args)
7c7b9cf5 KM	368	dai_link->cpu_dai_name = NULL;
179949bc	369
b3ca11ff	370	dai_link_of_err:
84d4cbe9 FE	371	of_node_put(np);
	372	of_node_put(bitclkmaster);
	373	of_node_put(framemaster);
6a91a17b JFM	374	return ret;
	375	}
	376
fa558c28	377	static int asoc_simple_card_parse_of(struct device_node *node,
f531913f	378	struct simple_card_data *priv)
fa558c28	379	{
f531913f	380	struct device *dev = simple_priv_to_dev(priv);
c7099eb1	381	u32 val;
d4c22094	382	int ret;
fa558c28	383
2080437d XL	384	if (!node)
	385	return -EINVAL;
	386
0dd4fc3c	387	/* Parse the card name from DT */
2772555b XL	388	snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
2772555b XL	389
0dd4fc3c	390	/* The off-codec widgets */
9d681f5b XL	391	if (of_property_read_bool(node, "simple-audio-card,widgets")) {
	392	ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
	393	"simple-audio-card,widgets");
	394	if (ret)
	395	return ret;
	396	}
	397
d4c22094	398	/* DAPM routes */
8c0b8230	399	if (of_property_read_bool(node, "simple-audio-card,routing")) {
b367a325	400	ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
8c0b8230	401	"simple-audio-card,routing");
f87a3e82 XL	402	if (ret)
	403	return ret;
	404	}
d4c22094	405
2942a0e2	406	/* Factor to mclk, used in hw_params() */
c7099eb1 JS	407	ret = of_property_read_u32(node, "simple-audio-card,mclk-fs", &val);
	408	if (ret == 0)
	409	priv->mclk_fs = val;
2942a0e2	410
b3ca11ff JS	411	dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
	412	priv->snd_card.name : "");
	413
2080437d XL	414	/* Single/Muti DAI link(s) & New style of DT node */
2080437d XL	415	if (of_get_child_by_name(node, "simple-audio-card,dai-link")) {
b3ca11ff	416	struct device_node *np = NULL;
a44a750e KM	417	int i = 0;
	418
	419	for_each_child_of_node(node, np) {
b3ca11ff	420	dev_dbg(dev, "\tlink %d:\n", i);
f531913f	421	ret = asoc_simple_card_dai_link_of(np, priv,
9810f537	422	i, false);
b3ca11ff JS	423	if (ret < 0) {
	424	of_node_put(np);
	425	return ret;
	426	}
a44a750e	427	i++;
6a91a17b	428	}
b3ca11ff	429	} else {
2080437d	430	/* For single DAI link & old style of DT node */
9810f537	431	ret = asoc_simple_card_dai_link_of(node, priv, 0, true);
6a91a17b	432	if (ret < 0)
b3ca11ff	433	return ret;
6a91a17b	434	}
dd41e0c4	435
3fe24032 DR	436	priv->gpio_hp_det = of_get_named_gpio(node,
	437	"simple-audio-card,hp-det-gpio", 0);
	438	if (priv->gpio_hp_det == -EPROBE_DEFER)
	439	return -EPROBE_DEFER;
	440
	441	priv->gpio_mic_det = of_get_named_gpio(node,
	442	"simple-audio-card,mic-det-gpio", 0);
	443	if (priv->gpio_mic_det == -EPROBE_DEFER)
	444	return -EPROBE_DEFER;
	445
2772555b	446	if (!priv->snd_card.name)
b3ca11ff	447	priv->snd_card.name = priv->snd_card.dai_link->name;
f687d900	448
fa558c28 KM	449	return 0;
	450	}
	451
0dd4fc3c	452	/* Decrease the reference count of the device nodes */
e512e001 JFM	453	static int asoc_simple_card_unref(struct platform_device *pdev)
	454	{
	455	struct snd_soc_card *card = platform_get_drvdata(pdev);
	456	struct snd_soc_dai_link *dai_link;
	457	struct device_node *np;
	458	int num_links;
	459
	460	for (num_links = 0, dai_link = card->dai_link;
	461	num_links < card->num_links;
	462	num_links++, dai_link++) {
	463	np = (struct device_node *) dai_link->cpu_of_node;
84d4cbe9	464	of_node_put(np);
e512e001	465	np = (struct device_node *) dai_link->codec_of_node;
84d4cbe9	466	of_node_put(np);
e512e001 JFM	467	}
	468	return 0;
	469	}
	470
f2390880 KM	471	static int asoc_simple_card_probe(struct platform_device *pdev)
f2390880 KM	472	{
45fce594	473	struct simple_card_data *priv;
5ca8ba41	474	struct snd_soc_dai_link *dai_link;
fa558c28	475	struct device_node *np = pdev->dev.of_node;
f89983ef	476	struct device *dev = &pdev->dev;
2080437d	477	int num_links, ret;
6a91a17b	478
0dd4fc3c	479	/* Get the number of DAI links */
2080437d	480	if (np && of_get_child_by_name(np, "simple-audio-card,dai-link"))
6a91a17b	481	num_links = of_get_child_count(np);
2080437d	482	else
6a91a17b	483	num_links = 1;
f2390880	484
0dd4fc3c	485	/* Allocate the private data and the DAI link array */
cf7dc23c	486	priv = devm_kzalloc(dev,
6a91a17b	487	sizeof(priv) + sizeof(dai_link) * num_links,
cf7dc23c	488	GFP_KERNEL);
ca65b492	489	if (!priv)
ca919fe4 XL	490	return -ENOMEM;
ca919fe4 XL	491
0dd4fc3c	492	/* Init snd_soc_card */
ca65b492 JFM	493	priv->snd_card.owner = THIS_MODULE;
ca65b492 JFM	494	priv->snd_card.dev = dev;
cf7dc23c	495	dai_link = priv->dai_link;
ca65b492	496	priv->snd_card.dai_link = dai_link;
6a91a17b	497	priv->snd_card.num_links = num_links;
201a0eac	498
2dbab978 GU	499	priv->gpio_hp_det = -ENOENT;
	500	priv->gpio_mic_det = -ENOENT;
	501
0dd4fc3c	502	/* Get room for the other properties */
cf7dc23c	503	priv->dai_props = devm_kzalloc(dev,
6a91a17b	504	sizeof(priv->dai_props) num_links,
cf7dc23c JFM	505	GFP_KERNEL);
	506	if (!priv->dai_props)
	507	return -ENOMEM;
	508
fa558c28	509	if (np && of_device_is_available(np)) {
ca919fe4	510
f531913f	511	ret = asoc_simple_card_parse_of(np, priv);
ca919fe4 XL	512	if (ret < 0) {
	513	if (ret != -EPROBE_DEFER)
	514	dev_err(dev, "parse error %d\n", ret);
e512e001	515	goto err;
fa558c28	516	}
6a91a17b	517
fa558c28	518	} else {
ca65b492 JFM	519	struct asoc_simple_card_info *cinfo;
	520
	521	cinfo = dev->platform_data;
	522	if (!cinfo) {
34787d0a XL	523	dev_err(dev, "no info for asoc-simple-card\n");
	524	return -EINVAL;
	525	}
fa558c28	526
781cbebe NC	527	if (!cinfo->name \|\|
	528	!cinfo->codec_dai.name \|\|
	529	!cinfo->codec \|\|
	530	!cinfo->platform \|\|
7722f830 JFM	531	!cinfo->cpu_dai.name) {
	532	dev_err(dev, "insufficient asoc_simple_card_info settings\n");
	533	return -EINVAL;
	534	}
2bee9914	535
12ffa6fc	536	priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
5ca8ba41 JFM	537	dai_link->name = cinfo->name;
	538	dai_link->stream_name = cinfo->name;
	539	dai_link->platform_name = cinfo->platform;
	540	dai_link->codec_name = cinfo->codec;
52008472 JFM	541	dai_link->cpu_dai_name = cinfo->cpu_dai.name;
52008472 JFM	542	dai_link->codec_dai_name = cinfo->codec_dai.name;
a5960bd5	543	dai_link->init = asoc_simple_card_dai_init;
cf7dc23c JFM	544	memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
	545	sizeof(priv->dai_props->cpu_dai));
	546	memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
	547	sizeof(priv->dai_props->codec_dai));
81985bd6	548
cf7dc23c JFM	549	priv->dai_props->cpu_dai.fmt \|= cinfo->daifmt;
cf7dc23c JFM	550	priv->dai_props->codec_dai.fmt \|= cinfo->daifmt;
f2390880 KM	551	}
f2390880 KM	552
ca65b492	553	snd_soc_card_set_drvdata(&priv->snd_card, priv);
f2390880	554
e512e001	555	ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
e3c4a28b XL	556	if (ret >= 0)
e3c4a28b XL	557	return ret;
e512e001 JFM	558
	559	err:
	560	asoc_simple_card_unref(pdev);
	561	return ret;
f2390880 KM	562	}
f2390880 KM	563
e3c4a28b XL	564	static int asoc_simple_card_remove(struct platform_device *pdev)
e3c4a28b XL	565	{
3fe24032 DR	566	struct snd_soc_card *card = platform_get_drvdata(pdev);
	567	struct simple_card_data *priv = snd_soc_card_get_drvdata(card);
	568
	569	if (gpio_is_valid(priv->gpio_hp_det))
	570	snd_soc_jack_free_gpios(&simple_card_hp_jack, 1,
	571	&simple_card_hp_jack_gpio);
	572	if (gpio_is_valid(priv->gpio_mic_det))
	573	snd_soc_jack_free_gpios(&simple_card_mic_jack, 1,
	574	&simple_card_mic_jack_gpio);
	575
e3c4a28b XL	576	return asoc_simple_card_unref(pdev);
	577	}
	578
fa558c28 KM	579	static const struct of_device_id asoc_simple_of_match[] = {
	580	{ .compatible = "simple-audio-card", },
	581	{},
	582	};
	583	MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
	584
f2390880 KM	585	static struct platform_driver asoc_simple_card = {
f2390880 KM	586	.driver = {
781cbebe	587	.name = "asoc-simple-card",
c445be35	588	.owner = THIS_MODULE,
fa558c28	589	.of_match_table = asoc_simple_of_match,
f2390880	590	},
781cbebe	591	.probe = asoc_simple_card_probe,
e3c4a28b	592	.remove = asoc_simple_card_remove,
f2390880 KM	593	};
	594
	595	module_platform_driver(asoc_simple_card);
	596
c445be35	597	MODULE_ALIAS("platform:asoc-simple-card");
f2390880 KM	598	MODULE_LICENSE("GPL");
	599	MODULE_DESCRIPTION("ASoC Simple Sound Card");
	600	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");