ASoC: simple-scu-card: remove simple-scu-card

	  This option enables generic simple sound card support

	  It also support DPCM of multi CPU single Codec ststem.

config SND_SIMPLE_SCU_CARD

	tristate "ASoC Simple SCU sound card support"

	depends on OF

	select SND_SIMPLE_CARD_UTILS

	help

	  This option enables generic simple SCU sound card support.

	  It supports DPCM of multi CPU single Codec system.

config SND_AUDIO_GRAPH_CARD

	tristate "ASoC Audio Graph sound card support"

	depends on OF

# SPDX-License-Identifier: GPL-2.0

snd-soc-simple-card-utils-objs	:= simple-card-utils.o

snd-soc-simple-card-objs	:= simple-card.o

snd-soc-simple-scu-card-objs	:= simple-scu-card.o

snd-soc-audio-graph-card-objs	:= audio-graph-card.o

obj-$(CONFIG_SND_SIMPLE_CARD_UTILS)	+= snd-soc-simple-card-utils.o

obj-$(CONFIG_SND_SIMPLE_CARD)		+= snd-soc-simple-card.o

obj-$(CONFIG_SND_SIMPLE_SCU_CARD)	+= snd-soc-simple-scu-card.o

obj-$(CONFIG_SND_AUDIO_GRAPH_CARD)	+= snd-soc-audio-graph-card.o

// SPDX-License-Identifier: GPL-2.0

//

// ASoC simple SCU sound card support

//

// Copyright (C) 2015 Renesas Solutions Corp.

// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

//

// based on ${LINUX}/sound/soc/generic/simple-card.c

#include <linux/clk.h>

#include <linux/device.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include <linux/string.h>

#include <sound/jack.h>

#include <sound/soc.h>

#include <sound/soc-dai.h>

#include <sound/simple_card_utils.h>

struct 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;

		struct snd_soc_dai_link_component codecs;

		struct snd_soc_dai_link_component platform;

		struct asoc_simple_card_data adata;

		struct snd_soc_codec_conf *codec_conf;

	} *dai_props;

	struct snd_soc_dai_link *dai_link;

	struct asoc_simple_dai *dais;

	struct asoc_simple_card_data adata;

	struct snd_soc_codec_conf *codec_conf;

};

#define simple_priv_to_card(priv) (&(priv)->snd_card)

#define simple_priv_to_props(priv, i) ((priv)->dai_props + (i))

#define simple_priv_to_dev(priv) (simple_priv_to_card(priv)->dev)

#define simple_priv_to_link(priv, i) (simple_priv_to_card(priv)->dai_link + (i))

#define DAI	"sound-dai"

#define CELL	"#sound-dai-cells"

#define PREFIX	"simple-audio-card,"

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 = asoc_simple_card_clk_enable(dai_props->cpu_dai);

	if (ret)

		return ret;

	ret = asoc_simple_card_clk_enable(dai_props->codec_dai);

	if (ret)

		asoc_simple_card_clk_disable(dai_props->cpu_dai);

	return ret;

}

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);

	asoc_simple_card_clk_disable(dai_props->cpu_dai);

	asoc_simple_card_clk_disable(dai_props->codec_dai);

}

static const struct snd_soc_ops asoc_simple_card_ops = {

	.startup = asoc_simple_card_startup,

	.shutdown = asoc_simple_card_shutdown,

};

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 simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);

	int ret;

	ret = asoc_simple_card_init_dai(rtd->codec_dai,

					dai_props->codec_dai);

	if (ret < 0)

		return ret;

	ret = asoc_simple_card_init_dai(rtd->cpu_dai,

					dai_props->cpu_dai);

	if (ret < 0)

		return ret;

	return 0;

}

static int asoc_simple_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,

					struct snd_pcm_hw_params *params)

{

	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);

	asoc_simple_card_convert_fixup(&dai_props->adata, params);

	/* overwrite by top level adata if exist */

	asoc_simple_card_convert_fixup(&priv->adata, params);

	return 0;

}

static int asoc_simple_card_dai_link_of(struct device_node *link,

					struct device_node *np,

					struct device_node *codec,

					struct simple_card_data *priv,

					int *dai_idx, int link_idx,

					int *conf_idx, int is_fe,

					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, link_idx);

	struct simple_dai_props *dai_props = simple_priv_to_props(priv, link_idx);

	struct snd_soc_card *card = simple_priv_to_card(priv);

	struct asoc_simple_dai *dai;

	char *prefix = "";

	int ret;

	/* For single DAI link & old style of DT node */

	if (is_top_level_node)

		prefix = PREFIX;

	if (is_fe) {

		int is_single_links = 0;

		struct snd_soc_dai_link_component *codecs;

		/* BE is dummy */

		codecs			= dai_link->codecs;

		codecs->of_node		= NULL;

		codecs->dai_name	= "snd-soc-dummy-dai";

		codecs->name		= "snd-soc-dummy";

		/* FE settings */

		dai_link->dynamic		= 1;

		dai_link->dpcm_merged_format	= 1;

		dai =

		dai_props->cpu_dai	= &priv->dais[(*dai_idx)++];

		ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL,

						 &is_single_links);

		if (ret)

			return ret;

		ret = asoc_simple_card_parse_clk_cpu(dev, np, dai_link, dai);

		if (ret < 0)

			return ret;

		ret = asoc_simple_card_set_dailink_name(dev, dai_link,

							"fe.%s",

							dai_link->cpu_dai_name);

		if (ret < 0)

			return ret;

		asoc_simple_card_canonicalize_cpu(dai_link, is_single_links);

	} else {

		struct snd_soc_codec_conf *cconf;

		/* FE is dummy */

		dai_link->cpu_of_node		= NULL;

		dai_link->cpu_dai_name		= "snd-soc-dummy-dai";

		dai_link->cpu_name		= "snd-soc-dummy";

		/* BE settings */

		dai_link->no_pcm		= 1;

		dai_link->be_hw_params_fixup	= asoc_simple_card_be_hw_params_fixup;

		dai =

		dai_props->codec_dai	= &priv->dais[(*dai_idx)++];

		cconf =

		dai_props->codec_conf	= &priv->codec_conf[(*conf_idx)++];

		ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL);

		if (ret < 0)

			return ret;

		ret = asoc_simple_card_parse_clk_codec(dev, np, dai_link, dai);

		if (ret < 0)

			return ret;

		ret = asoc_simple_card_set_dailink_name(dev, dai_link,

							"be.%s",

							dai_link->codecs->dai_name);

		if (ret < 0)

			return ret;

		/* check "prefix" from top node */

		snd_soc_of_parse_audio_prefix(card, cconf,

					      dai_link->codecs->of_node,

					      PREFIX "prefix");

		/* check "prefix" from each node if top doesn't have */

		if (!cconf->of_node)

			snd_soc_of_parse_node_prefix(np, cconf,

						     dai_link->codecs->of_node,

						     "prefix");

	}

	asoc_simple_card_parse_convert(dev, link, prefix, &dai_props->adata);

	ret = asoc_simple_card_of_parse_tdm(np, dai);

	if (ret)

		return ret;

	ret = asoc_simple_card_canonicalize_dailink(dai_link);

	if (ret < 0)

		return ret;

	ret = asoc_simple_card_parse_daifmt(dev, link, codec,

					    prefix, &dai_link->dai_fmt);

	if (ret < 0)

		return ret;

	dai_link->dpcm_playback		= 1;

	dai_link->dpcm_capture		= 1;

	dai_link->ops			= &asoc_simple_card_ops;

	dai_link->init			= asoc_simple_card_dai_init;

	return 0;

}

static int asoc_simple_card_parse_of(struct simple_card_data *priv)

{

	struct device *dev = simple_priv_to_dev(priv);

	struct device_node *top = dev->of_node;

	struct device_node *node;

	struct device_node *np;

	struct device_node *codec;

	struct snd_soc_card *card = simple_priv_to_card(priv);

	bool is_fe;

	int ret, loop;

	int dai_idx, link_idx, conf_idx;

	if (!top)

		return -EINVAL;

	ret = asoc_simple_card_of_parse_widgets(card, PREFIX);

	if (ret < 0)

		return ret;

	ret = asoc_simple_card_of_parse_routing(card, PREFIX);

	if (ret < 0)

		return ret;

	asoc_simple_card_parse_convert(dev, top, PREFIX, &priv->adata);

	loop = 1;

	link_idx = 0;

	dai_idx = 0;

	conf_idx = 0;

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

	if (!node) {

		node = dev->of_node;

		loop = 0;

	}

	do  {

		codec = of_get_child_by_name(node,

					     loop ? "codec" : PREFIX "codec");

		if (!codec)

			return -ENODEV;

		for_each_child_of_node(node, np) {

			is_fe = (np != codec);

			ret = asoc_simple_card_dai_link_of(node, np, codec, priv,

							   &dai_idx, link_idx++,

							   &conf_idx,

							   is_fe, !loop);

			if (ret < 0)

				return ret;

		}

		node = of_get_next_child(top, node);

	} while (loop && node);

	ret = asoc_simple_card_parse_card_name(card, PREFIX);

	if (ret < 0)

		return ret;

	return 0;

}

static void asoc_simple_card_get_dais_count(struct device *dev,

					    int *link_num,

					    int *dais_num,

					    int *ccnf_num)

{

	struct device_node *top = dev->of_node;

	struct device_node *node;

	int loop;

	int num;

	/*

	 * link_num :	number of links.

	 *		CPU-Codec / CPU-dummy / dummy-Codec

	 * dais_num :	number of DAIs

	 * ccnf_num :	number of codec_conf

	 *		same number for "dummy-Codec"

	 *

	 * ex1)

	 * CPU0 --- Codec0	link : 5

	 * CPU1 --- Codec1	dais : 7

	 * CPU2 -/		ccnf : 1

	 * CPU3 --- Codec2

	 *

	 *	=> 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec

	 *	=> 7 DAIs  = 4xCPU + 3xCodec

	 *	=> 1 ccnf  = 1xdummy-Codec

	 *

	 * ex2)

	 * CPU0 --- Codec0	link : 5

	 * CPU1 --- Codec1	dais : 6

	 * CPU2 -/		ccnf : 1

	 * CPU3 -/

	 *

	 *	=> 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec

	 *	=> 6 DAIs  = 4xCPU + 2xCodec

	 *	=> 1 ccnf  = 1xdummy-Codec

	 *

	 * ex3)

	 * CPU0 --- Codec0	link : 6

	 * CPU1 -/		dais : 6

	 * CPU2 --- Codec1	ccnf : 2

	 * CPU3 -/

	 *

	 *	=> 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec

	 *	=> 6 DAIs  = 4xCPU + 2xCodec

	 *	=> 2 ccnf  = 2xdummy-Codec

	 */

	if (!top) {

		(*link_num) = 1;

		(*dais_num) = 2;

		(*ccnf_num) = 0;

		return;

	}

	loop = 1;

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

	if (!node) {

		node = top;

		loop = 0;

	}

	do {

		num = of_get_child_count(node);

		(*dais_num) += num;

		if (num > 2) {

			(*link_num) += num;

			(*ccnf_num)++;

		} else {

			(*link_num)++;

		}

		node = of_get_next_child(top, node);

	} while (loop && node);

}

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 asoc_simple_dai *dais;

	struct snd_soc_card *card;

	struct snd_soc_codec_conf *cconf;

	struct device *dev = &pdev->dev;

	int ret, i;

	int lnum = 0, dnum = 0, cnum = 0;

	/* Allocate the private data */

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;

	asoc_simple_card_get_dais_count(dev, &lnum, &dnum, &cnum);

	if (!lnum || !dnum)

		return -EINVAL;

	dai_props = devm_kcalloc(dev, lnum, sizeof(*dai_props), GFP_KERNEL);

	dai_link  = devm_kcalloc(dev, lnum, sizeof(*dai_link), GFP_KERNEL);

	dais      = devm_kcalloc(dev, dnum, sizeof(*dais),      GFP_KERNEL);

	cconf     = devm_kcalloc(dev, cnum, sizeof(*cconf),     GFP_KERNEL);

	if (!dai_props || !dai_link || !dais)

		return -ENOMEM;

	/*

	 * Use snd_soc_dai_link_component instead of legacy style

	 * It is codec only. but cpu/platform will be supported in the future.

	 * see

	 *	soc-core.c :: snd_soc_init_multicodec()

	 */

	for (i = 0; i < lnum; i++) {

		dai_link[i].codecs	= &dai_props[i].codecs;

		dai_link[i].num_codecs	= 1;

		dai_link[i].platform	= &dai_props[i].platform;

	}

	priv->dai_props				= dai_props;

	priv->dai_link				= dai_link;

	priv->dais				= dais;

	priv->codec_conf			= cconf;

	/* Init snd_soc_card */

	card = simple_priv_to_card(priv);

	card->owner		= THIS_MODULE;

	card->dev		= dev;

	card->dai_link		= priv->dai_link;

	card->num_links		= lnum;

	card->codec_conf	= cconf;

	card->num_configs	= cnum;

	ret = asoc_simple_card_parse_of(priv);

	if (ret < 0) {

		if (ret != -EPROBE_DEFER)

			dev_err(dev, "parse error %d\n", ret);

		goto err;

	}

	snd_soc_card_set_drvdata(card, priv);

	ret = devm_snd_soc_register_card(dev, card);

	if (ret < 0)

		goto err;

	return 0;

err:

	asoc_simple_card_clean_reference(card);

	return ret;

}

static int asoc_simple_card_remove(struct platform_device *pdev)

{

	struct snd_soc_card *card = platform_get_drvdata(pdev);

	return asoc_simple_card_clean_reference(card);

}

static const struct of_device_id asoc_simple_of_match[] = {

	{ .compatible = "renesas,rsrc-card", },

	{ .compatible = "simple-scu-audio-card", },

	{},

};

MODULE_DEVICE_TABLE(of, asoc_simple_of_match);

static struct platform_driver asoc_simple_card = {

	.driver = {

		.name = "simple-scu-audio-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-scu-card");

MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("ASoC Simple SCU Sound Card");

MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");