Release 4.11 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 asoc_simple_jack {
	
struct snd_soc_jack jack;
	
struct snd_soc_jack_pin pin;
	
struct snd_soc_jack_gpio gpio;
};


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;
		
unsigned int mclk_fs;
	} 
*dai_props;
	
unsigned int mclk_fs;
	
struct asoc_simple_jack hp_jack;
	
struct asoc_simple_jack mic_jack;
	
struct snd_soc_dai_link *dai_link;
};


#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))


#define DAI	"sound-dai"

#define CELL	"#sound-dai-cells"

#define PREFIX	"simple-audio-card,"


#define asoc_simple_card_init_hp(card, sjack, prefix)\
	asoc_simple_card_init_jack(card, sjack, 1, prefix)

#define asoc_simple_card_init_mic(card, sjack, prefix)\
	asoc_simple_card_init_jack(card, sjack, 0, prefix)


static int asoc_simple_card_init_jack(struct snd_soc_card *card,
				      struct asoc_simple_jack *sjack,
				      int is_hp, char *prefix)
{
	struct device *dev = card->dev;
	enum of_gpio_flags flags;
	char prop[128];
	char *pin_name;
	char *gpio_name;
	int mask;
	int det;

	sjack->gpio.gpio = -ENOENT;

	if (is_hp) {
		snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
		pin_name	= "Headphones";
		gpio_name	= "Headphone detection";
		mask		= SND_JACK_HEADPHONE;
	} else {
		snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
		pin_name	= "Mic Jack";
		gpio_name	= "Mic detection";
		mask		= SND_JACK_MICROPHONE;
	}

	det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
	if (det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	if (gpio_is_valid(det)) {
		sjack->pin.pin		= pin_name;
		sjack->pin.mask		= mask;

		sjack->gpio.name	= gpio_name;
		sjack->gpio.report	= mask;
		sjack->gpio.gpio	= det;
		sjack->gpio.invert	= !!(flags & OF_GPIO_ACTIVE_LOW);
		sjack->gpio.debounce_time = 150;

		snd_soc_card_jack_new(card, pin_name, mask,
				      &sjack->jack,
				      &sjack->pin, 1);

		snd_soc_jack_add_gpios(&sjack->jack, 1,
				       &sjack->gpio);
	}

	return 0;
}

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Kuninori Morimoto
263
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263
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1
100.00%



static void asoc_simple_card_remove_jack(struct asoc_simple_jack *sjack)
{
	if (gpio_is_valid(sjack->gpio.gpio))
		snd_soc_jack_free_gpios(&sjack->jack, 1, &sjack->gpio);
}

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37
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1
100.00%



static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct simple_card_data *priv =	snd_soc_card_get_drvdata(rtd->card);
	struct simple_dai_props *dai_props =
		simple_priv_to_props(priv, rtd->num);
	int ret;

	ret = clk_prepare_enable(dai_props->cpu_dai.clk);
	if (ret)
		return ret;

	ret = clk_prepare_enable(dai_props->codec_dai.clk);
	if (ret)
		clk_disable_unprepare(dai_props->cpu_dai.clk);

	return ret;
}

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Jyri Sarha
89
94.68%
1
33.33%
Kuninori Morimoto
4
4.26%
1
33.33%
Mengdong Lin
1
1.06%
1
33.33%
Total
94
100.00%
3
100.00%



static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct simple_card_data *priv =	snd_soc_card_get_drvdata(rtd->card);
	struct simple_dai_props *dai_props =
		simple_priv_to_props(priv, rtd->num);

	clk_disable_unprepare(dai_props->cpu_dai.clk);

	clk_disable_unprepare(dai_props->codec_dai.clk);
}

Contributors
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CommitProp
Jyri Sarha
59
92.19%
1
33.33%
Kuninori Morimoto
4
6.25%
1
33.33%
Mengdong Lin
1
1.56%
1
33.33%
Total
64
100.00%
3
100.00%



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 snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
	struct simple_dai_props *dai_props =
		simple_priv_to_props(priv, rtd->num);
	unsigned int mclk, mclk_fs = 0;
	int ret = 0;

	if (priv->mclk_fs)
		mclk_fs = priv->mclk_fs;
	else if (dai_props->mclk_fs)
		mclk_fs = dai_props->mclk_fs;

	if (mclk_fs) {
		mclk = params_rate(params) * mclk_fs;
		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
					     SND_SOC_CLOCK_IN);
		if (ret && ret != -ENOTSUPP)
			goto err;

		ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
					     SND_SOC_CLOCK_OUT);
		if (ret && ret != -ENOTSUPP)
			goto err;
	}
	return 0;
err:
	return ret;
}

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Andrew Lunn
83
46.11%
1
16.67%
Arnaud Pouliquen
63
35.00%
2
33.33%
Kuninori Morimoto
33
18.33%
2
33.33%
Mengdong Lin
1
0.56%
1
16.67%
Total
180
100.00%
6
100.00%


static const struct snd_soc_ops asoc_simple_card_ops = {
	.startup = asoc_simple_card_startup,
	.shutdown = asoc_simple_card_shutdown,
	.hw_params = asoc_simple_card_hw_params,
};



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 =
		simple_priv_to_props(priv, rtd->num);
	int ret;

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

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

	ret = asoc_simple_card_init_hp(rtd->card, &priv->hp_jack, PREFIX);
	if (ret < 0)
		return ret;

	ret = asoc_simple_card_init_mic(rtd->card, &priv->hp_jack, PREFIX);
	if (ret < 0)
		return ret;

	return 0;
}

Contributors
Person
Tokens
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CommitProp
Kuninori Morimoto
111
72.55%
5
35.71%
Dylan Reid
17
11.11%
1
7.14%
Jean-François Moine
12
7.84%
4
28.57%
Lars-Peter Clausen
4
2.61%
1
7.14%
Jianqun Xu
4
2.61%
1
7.14%
Xiubo Li
3
1.96%
1
7.14%
Mengdong Lin
2
1.31%
1
7.14%
Total
153
100.00%
14
100.00%



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 asoc_simple_dai *cpu_dai = &dai_props->cpu_dai;
	struct asoc_simple_dai *codec_dai = &dai_props->codec_dai;
	struct device_node *cpu = NULL;
	struct device_node *plat = NULL;
	struct device_node *codec = NULL;
	char prop[128];
	char *prefix = "";
	int ret, single_cpu;

	/* For single DAI link & old style of DT node */
	if (is_top_level_node)
		prefix = PREFIX;

	snprintf(prop, sizeof(prop), "%scpu", prefix);
	cpu = of_get_child_by_name(node, prop);

	snprintf(prop, sizeof(prop), "%splat", prefix);
	plat = of_get_child_by_name(node, prop);

	snprintf(prop, sizeof(prop), "%scodec", prefix);
	codec = of_get_child_by_name(node, prop);

	if (!cpu || !codec) {
		ret = -EINVAL;
		dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
		goto dai_link_of_err;
	}

	ret = asoc_simple_card_parse_daifmt(dev, node, codec,
					    prefix, &dai_link->dai_fmt);
	if (ret < 0)
		goto dai_link_of_err;

	of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs);

	ret = asoc_simple_card_parse_cpu(cpu, dai_link,
					 DAI, CELL, &single_cpu);
	if (ret < 0)
		goto dai_link_of_err;

	ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL);
	if (ret < 0)
		goto dai_link_of_err;

	ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL);
	if (ret < 0)
		goto dai_link_of_err;

	ret = snd_soc_of_parse_tdm_slot(cpu,	&cpu_dai->tx_slot_mask,
						&cpu_dai->rx_slot_mask,
						&cpu_dai->slots,
						&cpu_dai->slot_width);
	if (ret < 0)
		goto dai_link_of_err;

	ret = snd_soc_of_parse_tdm_slot(codec,	&codec_dai->tx_slot_mask,
						&codec_dai->rx_slot_mask,
						&codec_dai->slots,
						&codec_dai->slot_width);
	if (ret < 0)
		goto dai_link_of_err;

	ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai);
	if (ret < 0)
		goto dai_link_of_err;

	ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai);
	if (ret < 0)
		goto dai_link_of_err;

	ret = asoc_simple_card_canonicalize_dailink(dai_link);
	if (ret < 0)
		goto dai_link_of_err;

	ret = asoc_simple_card_set_dailink_name(dev, dai_link,
						"%s-%s",
						dai_link->cpu_dai_name,
						dai_link->codec_dai_name);
	if (ret < 0)
		goto dai_link_of_err;

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

	asoc_simple_card_canonicalize_cpu(dai_link, single_cpu);

dai_link_of_err:
	of_node_put(cpu);
	of_node_put(codec);

	return ret;
}

Contributors
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Kuninori Morimoto
369
63.62%
16
59.26%
Jyri Sarha
95
16.38%
2
7.41%
Jean-François Moine
44
7.59%
2
7.41%
Jun Nie
32
5.52%
1
3.70%
Lars-Peter Clausen
12
2.07%
1
3.70%
Arnaud Pouliquen
11
1.90%
1
3.70%
Andrew Lunn
7
1.21%
1
3.70%
Vishal Thanki
6
1.03%
1
3.70%
Nicolin Chen
3
0.52%
1
3.70%
Xiubo Li
1
0.17%
1
3.70%
Total
580
100.00%
27
100.00%



static int asoc_simple_card_parse_aux_devs(struct device_node *node,
					   struct simple_card_data *priv)
{
	struct device *dev = simple_priv_to_dev(priv);
	struct device_node *aux_node;
	int i, n, len;

	if (!of_find_property(node, PREFIX "aux-devs", &len))
		return 0;		/* Ok to have no aux-devs */

	n = len / sizeof(__be32);
	if (n <= 0)
		return -EINVAL;

	priv->snd_card.aux_dev = devm_kzalloc(dev,
			n * sizeof(*priv->snd_card.aux_dev), GFP_KERNEL);
	if (!priv->snd_card.aux_dev)
		return -ENOMEM;

	for (i = 0; i < n; i++) {
		aux_node = of_parse_phandle(node, PREFIX "aux-devs", i);
		if (!aux_node)
			return -EINVAL;
		priv->snd_card.aux_dev[i].codec_of_node = aux_node;
	}

	priv->snd_card.num_aux_devs = n;
	return 0;
}

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1
100.00%



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

	if (!node)
		return -EINVAL;

	dai_link = of_get_child_by_name(node, PREFIX "dai-link");

	/* The off-codec widgets */
	if (of_property_read_bool(node, PREFIX "widgets")) {
		ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
					PREFIX "widgets");
		if (ret)
			goto card_parse_end;
	}

	/* DAPM routes */
	if (of_property_read_bool(node, PREFIX "routing")) {
		ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
					PREFIX "routing");
		if (ret)
			goto card_parse_end;
	}

	/* Factor to mclk, used in hw_params() */
	of_property_read_u32(node, PREFIX "mclk-fs", &priv->mclk_fs);

	/* Single/Muti DAI link(s) & New style of DT node */
	if (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);
				goto card_parse_end;
			}
			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)
			goto card_parse_end;
	}

	ret = asoc_simple_card_parse_card_name(&priv->snd_card, PREFIX);
	if (ret < 0)
		goto card_parse_end;

	ret = asoc_simple_card_parse_aux_devs(node, priv);

card_parse_end:
	of_node_put(dai_link);

	return ret;
}

Contributors
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CommitProp
Jyri Sarha
125
46.82%
2
12.50%
Kuninori Morimoto
92
34.46%
9
56.25%
Nikita Yushchenko
18
6.74%
1
6.25%
Xiubo Li
12
4.49%
2
12.50%
Andrew Lunn
11
4.12%
1
6.25%
Jean-François Moine
9
3.37%
1
6.25%
Total
267
100.00%
16
100.00%



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

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

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

	dai_props = devm_kzalloc(dev, sizeof(*dai_props) * num, GFP_KERNEL);
	dai_link  = devm_kzalloc(dev, sizeof(*dai_link)  * num, GFP_KERNEL);
	if (!dai_props || !dai_link)
		return -ENOMEM;

	priv->dai_props			= dai_props;
	priv->dai_link			= dai_link;

	/* 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;

	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->dai_fmt	= cinfo->daifmt;
		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));
	}

	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_clean_reference(&priv->snd_card);

	return ret;
}

Contributors
Person
Tokens
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CommitProp
Kuninori Morimoto
292
58.52%
11
40.74%
Jean-François Moine
161
32.26%
9
33.33%
Xiubo Li
34
6.81%
5
18.52%
Lars-Peter Clausen
8
1.60%
1
3.70%
Geert Uytterhoeven
4
0.80%
1
3.70%
Total
499
100.00%
27
100.00%



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);

	asoc_simple_card_remove_jack(&priv->hp_jack);
	asoc_simple_card_remove_jack(&priv->mic_jack);

	return asoc_simple_card_clean_reference(card);
}

Contributors
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CommitProp
Dylan Reid
30
56.60%
1
20.00%
Xiubo Li
15
28.30%
1
20.00%
Kuninori Morimoto
7
13.21%
2
40.00%
Geert Uytterhoeven
1
1.89%
1
20.00%
Total
53
100.00%
5
100.00%


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",
		.pm = &snd_soc_pm_ops,
		.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 v2");
MODULE_DESCRIPTION("ASoC Simple Sound Card");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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Kuninori Morimoto
1393
52.89%
35
47.95%
Jyri Sarha
368
13.97%
4
5.48%
Jean-François Moine
254
9.64%
10
13.70%
Nikita Yushchenko
191
7.25%
1
1.37%
Andrew Lunn
105
3.99%
1
1.37%
Xiubo Li
80
3.04%
8
10.96%
Arnaud Pouliquen
78
2.96%
2
2.74%
Dylan Reid
71
2.70%
1
1.37%
Jun Nie
32
1.21%
1
1.37%
Lars-Peter Clausen
24
0.91%
2
2.74%
Fabio Estevam
7
0.27%
1
1.37%
Vishal Thanki
6
0.23%
1
1.37%
Peter Ujfalusi
6
0.23%
1
1.37%
Jianqun Xu
5
0.19%
1
1.37%
Mengdong Lin
5
0.19%
1
1.37%
Geert Uytterhoeven
5
0.19%
1
1.37%
Nicolin Chen
3
0.11%
1
1.37%
Julia Lawall
1
0.04%
1
1.37%
Total
2634
100.00%
73
100.00%
Directory: sound/soc/generic

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