[deliverable/linux.git] / sound / soc / sh / rcar / core.c

/*
 * Renesas R-Car SRU/SCU/SSIU/SSI support
 *
 * Copyright (C) 2013 Renesas Solutions Corp.
 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 *
 * Based on fsi.c
 * Kuninori Morimoto <morimoto.kuninori@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.
 */

/*
 * Renesas R-Car sound device structure
 *
 * Gen1
 *
 * SRU		: Sound Routing Unit
 *  - SRC	: Sampling Rate Converter
 *  - CMD
 *    - CTU	: Channel Count Conversion Unit
 *    - MIX	: Mixer
 *    - DVC	: Digital Volume and Mute Function
 *  - SSI	: Serial Sound Interface
 *
 * Gen2
 *
 * SCU		: Sampling Rate Converter Unit
 *  - SRC	: Sampling Rate Converter
 *  - CMD
 *   - CTU	: Channel Count Conversion Unit
 *   - MIX	: Mixer
 *   - DVC	: Digital Volume and Mute Function
 * SSIU		: Serial Sound Interface Unit
 *  - SSI	: Serial Sound Interface
 */

/*
 *	driver data Image
 *
 * rsnd_priv
 *   |
 *   | ** this depends on Gen1/Gen2
 *   |
 *   +- gen
 *   |
 *   | ** these depend on data path
 *   | ** gen and platform data control it
 *   |
 *   +- rdai[0]
 *   |   |		 sru     ssiu      ssi
 *   |   +- playback -> [mod] -> [mod] -> [mod] -> ...
 *   |   |
 *   |   |		 sru     ssiu      ssi
 *   |   +- capture  -> [mod] -> [mod] -> [mod] -> ...
 *   |
 *   +- rdai[1]
 *   |   |		 sru     ssiu      ssi
 *   |   +- playback -> [mod] -> [mod] -> [mod] -> ...
 *   |   |
 *   |   |		 sru     ssiu      ssi
 *   |   +- capture  -> [mod] -> [mod] -> [mod] -> ...
 *   ...
 *   |
 *   | ** these control ssi
 *   |
 *   +- ssi
 *   |  |
 *   |  +- ssi[0]
 *   |  +- ssi[1]
 *   |  +- ssi[2]
 *   |  ...
 *   |
 *   | ** these control scu
 *   |
 *   +- scu
 *      |
 *      +- scu[0]
 *      +- scu[1]
 *      +- scu[2]
 *      ...
 *
 *
 * for_each_rsnd_dai(xx, priv, xx)
 *  rdai[0] => rdai[1] => rdai[2] => ...
 *
 * for_each_rsnd_mod(xx, rdai, xx)
 *  [mod] => [mod] => [mod] => ...
 *
 * rsnd_dai_call(xxx, fn )
 *  [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
 *
 */
#include <linux/pm_runtime.h>
#include "rsnd.h"

#define RSND_RATES SNDRV_PCM_RATE_8000_96000
#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)

/*
 *	rsnd_platform functions
 */
#define rsnd_platform_call(priv, dai, func, param...)	\
	(!(priv->info->func) ? 0 :		\
	 priv->info->func(param))

/*
 *	rsnd_mod functions
 */
char *rsnd_mod_name(struct rsnd_mod *mod)
{
	if (!mod || !mod->ops)
		return "unknown";

	return mod->ops->name;
}

void rsnd_mod_init(struct rsnd_priv *priv,
		   struct rsnd_mod *mod,
		   struct rsnd_mod_ops *ops,
		   int id)
{
	mod->priv	= priv;
	mod->id		= id;
	mod->ops	= ops;
	INIT_LIST_HEAD(&mod->list);
}

/*
 *	rsnd_dma functions
 */
static void rsnd_dma_continue(struct rsnd_dma *dma)
{
	/* push next A or B plane */
	dma->submit_loop = 1;
	schedule_work(&dma->work);
}

void rsnd_dma_start(struct rsnd_dma *dma)
{
	/* push both A and B plane*/
	dma->submit_loop = 2;
	schedule_work(&dma->work);
}

void rsnd_dma_stop(struct rsnd_dma *dma)
{
	dma->submit_loop = 0;
	cancel_work_sync(&dma->work);
	dmaengine_terminate_all(dma->chan);
}

static void rsnd_dma_complete(void *data)
{
	struct rsnd_dma *dma = (struct rsnd_dma *)data;
	struct rsnd_priv *priv = dma->priv;
	unsigned long flags;

	rsnd_lock(priv, flags);

	dma->complete(dma);

	if (dma->submit_loop)
		rsnd_dma_continue(dma);

	rsnd_unlock(priv, flags);
}

static void rsnd_dma_do_work(struct work_struct *work)
{
	struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);
	struct rsnd_priv *priv = dma->priv;
	struct device *dev = rsnd_priv_to_dev(priv);
	struct dma_async_tx_descriptor *desc;
	dma_addr_t buf;
	size_t len;
	int i;

	for (i = 0; i < dma->submit_loop; i++) {

		if (dma->inquiry(dma, &buf, &len) < 0)
			return;

		desc = dmaengine_prep_slave_single(
			dma->chan, buf, len, dma->dir,
			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
		if (!desc) {
			dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
			return;
		}

		desc->callback		= rsnd_dma_complete;
		desc->callback_param	= dma;

		if (dmaengine_submit(desc) < 0) {
			dev_err(dev, "dmaengine_submit() fail\n");
			return;
		}

	}

	dma_async_issue_pending(dma->chan);
}

int rsnd_dma_available(struct rsnd_dma *dma)
{
	return !!dma->chan;
}

static bool rsnd_dma_filter(struct dma_chan *chan, void *param)
{
	chan->private = param;

	return true;
}

int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
		  int is_play, int id,
		  int (*inquiry)(struct rsnd_dma *dma,
				  dma_addr_t *buf, int *len),
		  int (*complete)(struct rsnd_dma *dma))
{
	struct device *dev = rsnd_priv_to_dev(priv);
	dma_cap_mask_t mask;

	if (dma->chan) {
		dev_err(dev, "it already has dma channel\n");
		return -EIO;
	}

	dma_cap_zero(mask);
	dma_cap_set(DMA_SLAVE, mask);

	dma->slave.shdma_slave.slave_id = id;

	dma->chan = dma_request_channel(mask, rsnd_dma_filter,
					&dma->slave.shdma_slave);
	if (!dma->chan) {
		dev_err(dev, "can't get dma channel\n");
		return -EIO;
	}

	dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
	dma->priv = priv;
	dma->inquiry = inquiry;
	dma->complete = complete;
	INIT_WORK(&dma->work, rsnd_dma_do_work);

	return 0;
}

void  rsnd_dma_quit(struct rsnd_priv *priv,
		    struct rsnd_dma *dma)
{
	if (dma->chan)
		dma_release_channel(dma->chan);

	dma->chan = NULL;
}

/*
 *	rsnd_dai functions
 */
#define rsnd_dai_call(rdai, io, fn)			\
({							\
	struct rsnd_mod *mod, *n;			\
	int ret = 0;					\
	for_each_rsnd_mod(mod, n, io) {			\
		ret = rsnd_mod_call(mod, fn, rdai, io);	\
		if (ret < 0)				\
			break;				\
	}						\
	ret;						\
})

int rsnd_dai_connect(struct rsnd_dai *rdai,
		     struct rsnd_mod *mod,
		     struct rsnd_dai_stream *io)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	struct device *dev = rsnd_priv_to_dev(priv);

	if (!mod) {
		dev_err(dev, "NULL mod\n");
		return -EIO;
	}

	if (!list_empty(&mod->list)) {
		dev_err(dev, "%s%d is not empty\n",
			rsnd_mod_name(mod),
			rsnd_mod_id(mod));
		return -EIO;
	}

	list_add_tail(&mod->list, &io->head);

	return 0;
}

int rsnd_dai_disconnect(struct rsnd_mod *mod)
{
	list_del_init(&mod->list);

	return 0;
}

int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai)
{
	int id = rdai - priv->rdai;

	if ((id < 0) || (id >= rsnd_dai_nr(priv)))
		return -EINVAL;

	return id;
}

struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id)
{
	if ((id < 0) || (id >= rsnd_dai_nr(priv)))
		return NULL;

	return priv->rdai + id;
}

static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
{
	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);

	return rsnd_dai_get(priv, dai->id);
}

int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io)
{
	return &rdai->playback == io;
}

/*
 *	rsnd_soc_dai functions
 */
int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
{
	struct snd_pcm_substream *substream = io->substream;
	struct snd_pcm_runtime *runtime = substream->runtime;
	int pos = io->byte_pos + additional;

	pos %= (runtime->periods * io->byte_per_period);

	return pos;
}

void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
{
	io->byte_pos += byte;

	if (io->byte_pos >= io->next_period_byte) {
		struct snd_pcm_substream *substream = io->substream;
		struct snd_pcm_runtime *runtime = substream->runtime;

		io->period_pos++;
		io->next_period_byte += io->byte_per_period;

		if (io->period_pos >= runtime->periods) {
			io->byte_pos = 0;
			io->period_pos = 0;
			io->next_period_byte = io->byte_per_period;
		}

		snd_pcm_period_elapsed(substream);
	}
}

static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
				struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;

	if (!list_empty(&io->head))
		return -EIO;

	INIT_LIST_HEAD(&io->head);
	io->substream		= substream;
	io->byte_pos		= 0;
	io->period_pos		= 0;
	io->byte_per_period	= runtime->period_size *
				  runtime->channels *
				  samples_to_bytes(runtime, 1);
	io->next_period_byte	= io->byte_per_period;

	return 0;
}

static
struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	return  rtd->cpu_dai;
}

static
struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
					struct snd_pcm_substream *substream)
{
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		return &rdai->playback;
	else
		return &rdai->capture;
}

static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
			    struct snd_soc_dai *dai)
{
	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
	struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
	struct rsnd_mod *mod = rsnd_ssi_mod_get_frm_dai(priv,
						rsnd_dai_id(priv, rdai),
						rsnd_dai_is_play(rdai, io));
	int ssi_id = rsnd_mod_id(mod);
	int ret;
	unsigned long flags;

	rsnd_lock(priv, flags);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		ret = rsnd_dai_stream_init(io, substream);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_platform_call(priv, dai, start, ssi_id);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_gen_path_init(priv, rdai, io);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_dai_call(rdai, io, init);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_dai_call(rdai, io, start);
		if (ret < 0)
			goto dai_trigger_end;
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		ret = rsnd_dai_call(rdai, io, stop);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_dai_call(rdai, io, quit);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_gen_path_exit(priv, rdai, io);
		if (ret < 0)
			goto dai_trigger_end;

		ret = rsnd_platform_call(priv, dai, stop, ssi_id);
		if (ret < 0)
			goto dai_trigger_end;
		break;
	default:
		ret = -EINVAL;
	}

dai_trigger_end:
	rsnd_unlock(priv, flags);

	return ret;
}

static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);

	/* set master/slave audio interface */
	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		rdai->clk_master = 1;
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
		rdai->clk_master = 0;
		break;
	default:
		return -EINVAL;
	}

	/* set clock inversion */
	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_IF:
		rdai->bit_clk_inv = 0;
		rdai->frm_clk_inv = 1;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		rdai->bit_clk_inv = 1;
		rdai->frm_clk_inv = 0;
		break;
	case SND_SOC_DAIFMT_IB_IF:
		rdai->bit_clk_inv = 1;
		rdai->frm_clk_inv = 1;
		break;
	case SND_SOC_DAIFMT_NB_NF:
	default:
		rdai->bit_clk_inv = 0;
		rdai->frm_clk_inv = 0;
		break;
	}

	/* set format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		rdai->sys_delay = 0;
		rdai->data_alignment = 0;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		rdai->sys_delay = 1;
		rdai->data_alignment = 0;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		rdai->sys_delay = 1;
		rdai->data_alignment = 1;
		break;
	}

	return 0;
}

static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
	.trigger	= rsnd_soc_dai_trigger,
	.set_fmt	= rsnd_soc_dai_set_fmt,
};

static int rsnd_dai_probe(struct platform_device *pdev,
			  struct rcar_snd_info *info,
			  struct rsnd_priv *priv)
{
	struct snd_soc_dai_driver *drv;
	struct rsnd_dai *rdai;
	struct rsnd_mod *pmod, *cmod;
	struct device *dev = rsnd_priv_to_dev(priv);
	int dai_nr;
	int i;

	/* get max dai nr */
	for (dai_nr = 0; dai_nr < 32; dai_nr++) {
		pmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 1);
		cmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 0);

		if (!pmod && !cmod)
			break;
	}

	if (!dai_nr) {
		dev_err(dev, "no dai\n");
		return -EIO;
	}

	drv  = devm_kzalloc(dev, sizeof(*drv)  * dai_nr, GFP_KERNEL);
	rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
	if (!drv || !rdai) {
		dev_err(dev, "dai allocate failed\n");
		return -ENOMEM;
	}

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

		pmod = rsnd_ssi_mod_get_frm_dai(priv, i, 1);
		cmod = rsnd_ssi_mod_get_frm_dai(priv, i, 0);

		/*
		 *	init rsnd_dai
		 */
		INIT_LIST_HEAD(&rdai[i].playback.head);
		INIT_LIST_HEAD(&rdai[i].capture.head);

		snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);

		/*
		 *	init snd_soc_dai_driver
		 */
		drv[i].name	= rdai[i].name;
		drv[i].ops	= &rsnd_soc_dai_ops;
		if (pmod) {
			drv[i].playback.rates		= RSND_RATES;
			drv[i].playback.formats		= RSND_FMTS;
			drv[i].playback.channels_min	= 2;
			drv[i].playback.channels_max	= 2;
		}
		if (cmod) {
			drv[i].capture.rates		= RSND_RATES;
			drv[i].capture.formats		= RSND_FMTS;
			drv[i].capture.channels_min	= 2;
			drv[i].capture.channels_max	= 2;
		}

		dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
			pmod ? "play"    : " -- ",
			cmod ? "capture" : "  --   ");
	}

	priv->dai_nr	= dai_nr;
	priv->daidrv	= drv;
	priv->rdai	= rdai;

	return 0;
}

static void rsnd_dai_remove(struct platform_device *pdev,
			  struct rsnd_priv *priv)
{
}

/*
 *		pcm ops
 */
static struct snd_pcm_hardware rsnd_pcm_hardware = {
	.info =		SNDRV_PCM_INFO_INTERLEAVED	|
			SNDRV_PCM_INFO_MMAP		|
			SNDRV_PCM_INFO_MMAP_VALID	|
			SNDRV_PCM_INFO_PAUSE,
	.formats		= RSND_FMTS,
	.rates			= RSND_RATES,
	.rate_min		= 8000,
	.rate_max		= 192000,
	.channels_min		= 2,
	.channels_max		= 2,
	.buffer_bytes_max	= 64 * 1024,
	.period_bytes_min	= 32,
	.period_bytes_max	= 8192,
	.periods_min		= 1,
	.periods_max		= 32,
	.fifo_size		= 256,
};

static int rsnd_pcm_open(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	int ret = 0;

	snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);

	ret = snd_pcm_hw_constraint_integer(runtime,
					    SNDRV_PCM_HW_PARAM_PERIODS);

	return ret;
}

static int rsnd_hw_params(struct snd_pcm_substream *substream,
			 struct snd_pcm_hw_params *hw_params)
{
	return snd_pcm_lib_malloc_pages(substream,
					params_buffer_bytes(hw_params));
}

static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
	struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);

	return bytes_to_frames(runtime, io->byte_pos);
}

static struct snd_pcm_ops rsnd_pcm_ops = {
	.open		= rsnd_pcm_open,
	.ioctl		= snd_pcm_lib_ioctl,
	.hw_params	= rsnd_hw_params,
	.hw_free	= snd_pcm_lib_free_pages,
	.pointer	= rsnd_pointer,
};

/*
 *		snd_soc_platform
 */

#define PREALLOC_BUFFER		(32 * 1024)
#define PREALLOC_BUFFER_MAX	(32 * 1024)

static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
	return snd_pcm_lib_preallocate_pages_for_all(
		rtd->pcm,
		SNDRV_DMA_TYPE_DEV,
		rtd->card->snd_card->dev,
		PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
}

static void rsnd_pcm_free(struct snd_pcm *pcm)
{
	snd_pcm_lib_preallocate_free_for_all(pcm);
}

static struct snd_soc_platform_driver rsnd_soc_platform = {
	.ops		= &rsnd_pcm_ops,
	.pcm_new	= rsnd_pcm_new,
	.pcm_free	= rsnd_pcm_free,
};

static const struct snd_soc_component_driver rsnd_soc_component = {
	.name		= "rsnd",
};

/*
 *	rsnd probe
 */
static int rsnd_probe(struct platform_device *pdev)
{
	struct rcar_snd_info *info;
	struct rsnd_priv *priv;
	struct device *dev = &pdev->dev;
	int ret;

	info = pdev->dev.platform_data;
	if (!info) {
		dev_err(dev, "driver needs R-Car sound information\n");
		return -ENODEV;
	}

	/*
	 *	init priv data
	 */
	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		dev_err(dev, "priv allocate failed\n");
		return -ENODEV;
	}

	priv->dev	= dev;
	priv->info	= info;
	spin_lock_init(&priv->lock);

	/*
	 *	init each module
	 */
	ret = rsnd_gen_probe(pdev, info, priv);
	if (ret < 0)
		return ret;

	ret = rsnd_scu_probe(pdev, info, priv);
	if (ret < 0)
		return ret;

	ret = rsnd_adg_probe(pdev, info, priv);
	if (ret < 0)
		return ret;

	ret = rsnd_ssi_probe(pdev, info, priv);
	if (ret < 0)
		return ret;

	ret = rsnd_dai_probe(pdev, info, priv);
	if (ret < 0)
		return ret;

	/*
	 *	asoc register
	 */
	ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
	if (ret < 0) {
		dev_err(dev, "cannot snd soc register\n");
		return ret;
	}

	ret = snd_soc_register_component(dev, &rsnd_soc_component,
					 priv->daidrv, rsnd_dai_nr(priv));
	if (ret < 0) {
		dev_err(dev, "cannot snd dai register\n");
		goto exit_snd_soc;
	}

	dev_set_drvdata(dev, priv);

	pm_runtime_enable(dev);

	dev_info(dev, "probed\n");
	return ret;

exit_snd_soc:
	snd_soc_unregister_platform(dev);

	return ret;
}

static int rsnd_remove(struct platform_device *pdev)
{
	struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);

	pm_runtime_disable(&pdev->dev);

	/*
	 *	remove each module
	 */
	rsnd_ssi_remove(pdev, priv);
	rsnd_adg_remove(pdev, priv);
	rsnd_scu_remove(pdev, priv);
	rsnd_dai_remove(pdev, priv);
	rsnd_gen_remove(pdev, priv);

	return 0;
}

static struct platform_driver rsnd_driver = {
	.driver	= {
		.name	= "rcar_sound",
	},
	.probe		= rsnd_probe,
	.remove		= rsnd_remove,
};
module_platform_driver(rsnd_driver);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Renesas R-Car audio driver");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_ALIAS("platform:rcar-pcm-audio");
Commit	Line	Data
1536a968 KM	1	/*
	2	* Renesas R-Car SRU/SCU/SSIU/SSI support
	3	*
	4	* Copyright (C) 2013 Renesas Solutions Corp.
	5	* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	6	*
	7	* Based on fsi.c
	8	* Kuninori Morimoto <morimoto.kuninori@renesas.com>
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	/*
	16	* Renesas R-Car sound device structure
	17	*
	18	* Gen1
	19	*
	20	* SRU : Sound Routing Unit
	21	* - SRC : Sampling Rate Converter
	22	* - CMD
	23	* - CTU : Channel Count Conversion Unit
	24	* - MIX : Mixer
	25	* - DVC : Digital Volume and Mute Function
	26	* - SSI : Serial Sound Interface
	27	*
	28	* Gen2
	29	*
	30	* SCU : Sampling Rate Converter Unit
	31	* - SRC : Sampling Rate Converter
	32	* - CMD
	33	* - CTU : Channel Count Conversion Unit
	34	* - MIX : Mixer
	35	* - DVC : Digital Volume and Mute Function
	36	* SSIU : Serial Sound Interface Unit
	37	* - SSI : Serial Sound Interface
	38	*/
	39
	40	/*
	41	* driver data Image
	42	*
	43	* rsnd_priv
	44	* \|
	45	* \| ** this depends on Gen1/Gen2
	46	* \|
	47	* +- gen
	48	* \|
	49	* \| ** these depend on data path
	50	* \| ** gen and platform data control it
	51	* \|
	52	* +- rdai[0]
	53	* \| \| sru ssiu ssi
	54	* \| +- playback -> [mod] -> [mod] -> [mod] -> ...
	55	* \| \|
	56	* \| \| sru ssiu ssi
	57	* \| +- capture -> [mod] -> [mod] -> [mod] -> ...
	58	* \|
	59	* +- rdai[1]
	60	* \| \| sru ssiu ssi
	61	* \| +- playback -> [mod] -> [mod] -> [mod] -> ...
	62	* \| \|
	63	* \| \| sru ssiu ssi
	64	* \| +- capture -> [mod] -> [mod] -> [mod] -> ...
65	* ...
66	* \|
67	* \| ** these control ssi
68	* \|
69	* +- ssi
70	* \| \|
71	* \| +- ssi[0]
72	* \| +- ssi[1]
73	* \| +- ssi[2]
74	* \| ...
75	* \|
76	* \| ** these control scu
77	* \|
78	* +- scu
79	* \|
80	* +- scu[0]
81	* +- scu[1]
82	* +- scu[2]
83	* ...
84	*
85	*
86	* for_each_rsnd_dai(xx, priv, xx)
87	* rdai[0] => rdai[1] => rdai[2] => ...
88	*
89	* for_each_rsnd_mod(xx, rdai, xx)
90	* [mod] => [mod] => [mod] => ...
91	*
92	* rsnd_dai_call(xxx, fn )
93	* [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
94	*
95	*/
96	#include <linux/pm_runtime.h>
97	#include "rsnd.h"
98
99	#define RSND_RATES SNDRV_PCM_RATE_8000_96000
100	#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S16_LE)
101
102	/*
103	* rsnd_platform functions
104	*/
105	#define rsnd_platform_call(priv, dai, func, param...) \
740ad6c3	106	(!(priv->info->func) ? 0 : \
1536a968 KM	107	priv->info->func(param))
1536a968 KM	108
cdaa3cdf KM	109	/*
	110	* rsnd_mod functions
	111	*/
	112	char rsnd_mod_name(struct rsnd_mod mod)
	113	{
	114	if (!mod \|\| !mod->ops)
	115	return "unknown";
	116
	117	return mod->ops->name;
	118	}
	119
	120	void rsnd_mod_init(struct rsnd_priv *priv,
	121	struct rsnd_mod *mod,
	122	struct rsnd_mod_ops *ops,
	123	int id)
	124	{
	125	mod->priv = priv;
	126	mod->id = id;
	127	mod->ops = ops;
	128	INIT_LIST_HEAD(&mod->list);
	129	}
	130
0a4d94c0 KM	131	/*
	132	* rsnd_dma functions
	133	*/
	134	static void rsnd_dma_continue(struct rsnd_dma *dma)
	135	{
	136	/* push next A or B plane */
	137	dma->submit_loop = 1;
	138	schedule_work(&dma->work);
	139	}
	140
	141	void rsnd_dma_start(struct rsnd_dma *dma)
	142	{
	143	/* push both A and B plane*/
	144	dma->submit_loop = 2;
	145	schedule_work(&dma->work);
	146	}
	147
	148	void rsnd_dma_stop(struct rsnd_dma *dma)
	149	{
	150	dma->submit_loop = 0;
	151	cancel_work_sync(&dma->work);
	152	dmaengine_terminate_all(dma->chan);
	153	}
	154
	155	static void rsnd_dma_complete(void *data)
	156	{
	157	struct rsnd_dma dma = (struct rsnd_dma )data;
	158	struct rsnd_priv *priv = dma->priv;
	159	unsigned long flags;
	160
	161	rsnd_lock(priv, flags);
	162
	163	dma->complete(dma);
	164
	165	if (dma->submit_loop)
	166	rsnd_dma_continue(dma);
	167
	168	rsnd_unlock(priv, flags);
	169	}
	170
	171	static void rsnd_dma_do_work(struct work_struct *work)
	172	{
	173	struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);
	174	struct rsnd_priv *priv = dma->priv;
	175	struct device *dev = rsnd_priv_to_dev(priv);
	176	struct dma_async_tx_descriptor *desc;
	177	dma_addr_t buf;
	178	size_t len;
	179	int i;
	180
	181	for (i = 0; i < dma->submit_loop; i++) {
	182
	183	if (dma->inquiry(dma, &buf, &len) < 0)
	184	return;
	185
	186	desc = dmaengine_prep_slave_single(
	187	dma->chan, buf, len, dma->dir,
	188	DMA_PREP_INTERRUPT \| DMA_CTRL_ACK);
	189	if (!desc) {
	190	dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
	191	return;
	192	}
	193
	194	desc->callback = rsnd_dma_complete;
195	desc->callback_param = dma;
196
197	if (dmaengine_submit(desc) < 0) {
198	dev_err(dev, "dmaengine_submit() fail\n");
199	return;
200	}
201
202	}
203
204	dma_async_issue_pending(dma->chan);
205	}
206
207	int rsnd_dma_available(struct rsnd_dma *dma)
208	{
209	return !!dma->chan;
210	}
211
212	static bool rsnd_dma_filter(struct dma_chan chan, void param)
213	{
214	chan->private = param;
215
216	return true;
217	}
218
219	int rsnd_dma_init(struct rsnd_priv priv, struct rsnd_dma dma,
220	int is_play, int id,
221	int (inquiry)(struct rsnd_dma dma,
222	dma_addr_t buf, int len),
223	int (complete)(struct rsnd_dma dma))
224	{
225	struct device *dev = rsnd_priv_to_dev(priv);
226	dma_cap_mask_t mask;
227
228	if (dma->chan) {
229	dev_err(dev, "it already has dma channel\n");
230	return -EIO;
231	}
232
233	dma_cap_zero(mask);
234	dma_cap_set(DMA_SLAVE, mask);
235
236	dma->slave.shdma_slave.slave_id = id;
237
238	dma->chan = dma_request_channel(mask, rsnd_dma_filter,
239	&dma->slave.shdma_slave);
240	if (!dma->chan) {
241	dev_err(dev, "can't get dma channel\n");
242	return -EIO;
243	}
244
245	dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
246	dma->priv = priv;
247	dma->inquiry = inquiry;
248	dma->complete = complete;
249	INIT_WORK(&dma->work, rsnd_dma_do_work);
250
251	return 0;
252	}
253
254	void rsnd_dma_quit(struct rsnd_priv *priv,
255	struct rsnd_dma *dma)
256	{
257	if (dma->chan)
258	dma_release_channel(dma->chan);
259
260	dma->chan = NULL;
261	}
262
1536a968 KM	263	/*
	264	* rsnd_dai functions
	265	*/
cdaa3cdf KM	266	#define rsnd_dai_call(rdai, io, fn) \
	267	({ \
	268	struct rsnd_mod mod, n; \
	269	int ret = 0; \
	270	for_each_rsnd_mod(mod, n, io) { \
	271	ret = rsnd_mod_call(mod, fn, rdai, io); \
	272	if (ret < 0) \
	273	break; \
	274	} \
	275	ret; \
	276	})
	277
	278	int rsnd_dai_connect(struct rsnd_dai *rdai,
	279	struct rsnd_mod *mod,
	280	struct rsnd_dai_stream *io)
	281	{
	282	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	283	struct device *dev = rsnd_priv_to_dev(priv);
	284
	285	if (!mod) {
	286	dev_err(dev, "NULL mod\n");
	287	return -EIO;
	288	}
	289
	290	if (!list_empty(&mod->list)) {
	291	dev_err(dev, "%s%d is not empty\n",
	292	rsnd_mod_name(mod),
	293	rsnd_mod_id(mod));
	294	return -EIO;
	295	}
	296
	297	list_add_tail(&mod->list, &io->head);
	298
	299	return 0;
	300	}
	301
	302	int rsnd_dai_disconnect(struct rsnd_mod *mod)
	303	{
	304	list_del_init(&mod->list);
	305
	306	return 0;
	307	}
	308
4b4dab82 KM	309	int rsnd_dai_id(struct rsnd_priv priv, struct rsnd_dai rdai)
	310	{
	311	int id = rdai - priv->rdai;
	312
	313	if ((id < 0) \|\| (id >= rsnd_dai_nr(priv)))
	314	return -EINVAL;
	315
	316	return id;
	317	}
	318
1536a968 KM	319	struct rsnd_dai rsnd_dai_get(struct rsnd_priv priv, int id)
1536a968 KM	320	{
2192f81c KM	321	if ((id < 0) \|\| (id >= rsnd_dai_nr(priv)))
	322	return NULL;
	323
1536a968 KM	324	return priv->rdai + id;
	325	}
	326
	327	static struct rsnd_dai rsnd_dai_to_rdai(struct snd_soc_dai dai)
	328	{
	329	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
	330
	331	return rsnd_dai_get(priv, dai->id);
	332	}
	333
	334	int rsnd_dai_is_play(struct rsnd_dai rdai, struct rsnd_dai_stream io)
	335	{
	336	return &rdai->playback == io;
	337	}
	338
	339	/*
	340	* rsnd_soc_dai functions
	341	*/
	342	int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
	343	{
	344	struct snd_pcm_substream *substream = io->substream;
	345	struct snd_pcm_runtime *runtime = substream->runtime;
	346	int pos = io->byte_pos + additional;
	347
	348	pos %= (runtime->periods * io->byte_per_period);
	349
	350	return pos;
	351	}
	352
	353	void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
	354	{
	355	io->byte_pos += byte;
	356
	357	if (io->byte_pos >= io->next_period_byte) {
	358	struct snd_pcm_substream *substream = io->substream;
	359	struct snd_pcm_runtime *runtime = substream->runtime;
	360
	361	io->period_pos++;
	362	io->next_period_byte += io->byte_per_period;
	363
	364	if (io->period_pos >= runtime->periods) {
	365	io->byte_pos = 0;
	366	io->period_pos = 0;
	367	io->next_period_byte = io->byte_per_period;
	368	}
	369
	370	snd_pcm_period_elapsed(substream);
	371	}
	372	}
	373
	374	static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
	375	struct snd_pcm_substream *substream)
	376	{
	377	struct snd_pcm_runtime *runtime = substream->runtime;
	378
	379	if (!list_empty(&io->head))
	380	return -EIO;
	381
	382	INIT_LIST_HEAD(&io->head);
	383	io->substream = substream;
	384	io->byte_pos = 0;
	385	io->period_pos = 0;
	386	io->byte_per_period = runtime->period_size *
	387	runtime->channels *
388	samples_to_bytes(runtime, 1);
389	io->next_period_byte = io->byte_per_period;
390
391	return 0;
392	}
393
394	static
395	struct snd_soc_dai rsnd_substream_to_dai(struct snd_pcm_substream substream)
396	{
397	struct snd_soc_pcm_runtime *rtd = substream->private_data;
398
399	return rtd->cpu_dai;
400	}
401
402	static
403	struct rsnd_dai_stream rsnd_rdai_to_io(struct rsnd_dai rdai,
404	struct snd_pcm_substream *substream)
405	{
406	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
407	return &rdai->playback;
408	else
409	return &rdai->capture;
410	}
411
412	static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
413	struct snd_soc_dai *dai)
414	{
415	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
416	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
417	struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
4b4dab82 KM	418	struct rsnd_mod *mod = rsnd_ssi_mod_get_frm_dai(priv,
	419	rsnd_dai_id(priv, rdai),
	420	rsnd_dai_is_play(rdai, io));
	421	int ssi_id = rsnd_mod_id(mod);
1536a968 KM	422	int ret;
	423	unsigned long flags;
	424
	425	rsnd_lock(priv, flags);
	426
	427	switch (cmd) {
	428	case SNDRV_PCM_TRIGGER_START:
	429	ret = rsnd_dai_stream_init(io, substream);
	430	if (ret < 0)
	431	goto dai_trigger_end;
	432
	433	ret = rsnd_platform_call(priv, dai, start, ssi_id);
	434	if (ret < 0)
	435	goto dai_trigger_end;
	436
3337744a KM	437	ret = rsnd_gen_path_init(priv, rdai, io);
	438	if (ret < 0)
	439	goto dai_trigger_end;
	440
cdaa3cdf KM	441	ret = rsnd_dai_call(rdai, io, init);
	442	if (ret < 0)
	443	goto dai_trigger_end;
	444
	445	ret = rsnd_dai_call(rdai, io, start);
	446	if (ret < 0)
	447	goto dai_trigger_end;
1536a968 KM	448	break;
1536a968 KM	449	case SNDRV_PCM_TRIGGER_STOP:
cdaa3cdf KM	450	ret = rsnd_dai_call(rdai, io, stop);
	451	if (ret < 0)
	452	goto dai_trigger_end;
	453
	454	ret = rsnd_dai_call(rdai, io, quit);
	455	if (ret < 0)
	456	goto dai_trigger_end;
	457
3337744a	458	ret = rsnd_gen_path_exit(priv, rdai, io);
1536a968 KM	459	if (ret < 0)
	460	goto dai_trigger_end;
	461
3337744a KM	462	ret = rsnd_platform_call(priv, dai, stop, ssi_id);
	463	if (ret < 0)
	464	goto dai_trigger_end;
1536a968 KM	465	break;
	466	default:
	467	ret = -EINVAL;
	468	}
	469
	470	dai_trigger_end:
	471	rsnd_unlock(priv, flags);
	472
	473	return ret;
	474	}
	475
	476	static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
	477	{
	478	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
	479
	480	/* set master/slave audio interface */
	481	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	482	case SND_SOC_DAIFMT_CBM_CFM:
	483	rdai->clk_master = 1;
	484	break;
	485	case SND_SOC_DAIFMT_CBS_CFS:
	486	rdai->clk_master = 0;
	487	break;
	488	default:
	489	return -EINVAL;
	490	}
	491
	492	/* set clock inversion */
	493	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	494	case SND_SOC_DAIFMT_NB_IF:
	495	rdai->bit_clk_inv = 0;
	496	rdai->frm_clk_inv = 1;
	497	break;
	498	case SND_SOC_DAIFMT_IB_NF:
	499	rdai->bit_clk_inv = 1;
	500	rdai->frm_clk_inv = 0;
	501	break;
	502	case SND_SOC_DAIFMT_IB_IF:
	503	rdai->bit_clk_inv = 1;
	504	rdai->frm_clk_inv = 1;
	505	break;
	506	case SND_SOC_DAIFMT_NB_NF:
	507	default:
	508	rdai->bit_clk_inv = 0;
	509	rdai->frm_clk_inv = 0;
	510	break;
	511	}
	512
	513	/* set format */
	514	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	515	case SND_SOC_DAIFMT_I2S:
	516	rdai->sys_delay = 0;
	517	rdai->data_alignment = 0;
	518	break;
	519	case SND_SOC_DAIFMT_LEFT_J:
	520	rdai->sys_delay = 1;
	521	rdai->data_alignment = 0;
	522	break;
	523	case SND_SOC_DAIFMT_RIGHT_J:
	524	rdai->sys_delay = 1;
	525	rdai->data_alignment = 1;
	526	break;
	527	}
	528
529	return 0;
530	}
531
532	static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
533	.trigger = rsnd_soc_dai_trigger,
534	.set_fmt = rsnd_soc_dai_set_fmt,
535	};
536
537	static int rsnd_dai_probe(struct platform_device *pdev,
538	struct rcar_snd_info *info,
539	struct rsnd_priv *priv)
540	{
541	struct snd_soc_dai_driver *drv;
542	struct rsnd_dai *rdai;
4b4dab82	543	struct rsnd_mod pmod, cmod;
1536a968	544	struct device *dev = rsnd_priv_to_dev(priv);
4b4dab82 KM	545	int dai_nr;
	546	int i;
	547
	548	/* get max dai nr */
	549	for (dai_nr = 0; dai_nr < 32; dai_nr++) {
	550	pmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 1);
	551	cmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 0);
	552
	553	if (!pmod && !cmod)
	554	break;
	555	}
	556
	557	if (!dai_nr) {
	558	dev_err(dev, "no dai\n");
	559	return -EIO;
	560	}
1536a968 KM	561
	562	drv = devm_kzalloc(dev, sizeof(drv) dai_nr, GFP_KERNEL);
	563	rdai = devm_kzalloc(dev, sizeof(rdai) dai_nr, GFP_KERNEL);
	564	if (!drv \|\| !rdai) {
	565	dev_err(dev, "dai allocate failed\n");
	566	return -ENOMEM;
	567	}
	568
	569	for (i = 0; i < dai_nr; i++) {
1536a968	570
4b4dab82 KM	571	pmod = rsnd_ssi_mod_get_frm_dai(priv, i, 1);
4b4dab82 KM	572	cmod = rsnd_ssi_mod_get_frm_dai(priv, i, 0);
1536a968 KM	573
	574	/*
	575	* init rsnd_dai
	576	*/
	577	INIT_LIST_HEAD(&rdai[i].playback.head);
	578	INIT_LIST_HEAD(&rdai[i].capture.head);
	579
1536a968 KM	580	snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
	581
	582	/*
	583	* init snd_soc_dai_driver
	584	*/
	585	drv[i].name = rdai[i].name;
	586	drv[i].ops = &rsnd_soc_dai_ops;
4b4dab82	587	if (pmod) {
1536a968 KM	588	drv[i].playback.rates = RSND_RATES;
	589	drv[i].playback.formats = RSND_FMTS;
	590	drv[i].playback.channels_min = 2;
	591	drv[i].playback.channels_max = 2;
	592	}
4b4dab82	593	if (cmod) {
1536a968 KM	594	drv[i].capture.rates = RSND_RATES;
	595	drv[i].capture.formats = RSND_FMTS;
	596	drv[i].capture.channels_min = 2;
	597	drv[i].capture.channels_max = 2;
	598	}
	599
4b4dab82 KM	600	dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
	601	pmod ? "play" : " -- ",
	602	cmod ? "capture" : " -- ");
1536a968 KM	603	}
	604
	605	priv->dai_nr = dai_nr;
	606	priv->daidrv = drv;
	607	priv->rdai = rdai;
	608
	609	return 0;
	610	}
	611
	612	static void rsnd_dai_remove(struct platform_device *pdev,
	613	struct rsnd_priv *priv)
	614	{
	615	}
	616
	617	/*
	618	* pcm ops
	619	*/
	620	static struct snd_pcm_hardware rsnd_pcm_hardware = {
	621	.info = SNDRV_PCM_INFO_INTERLEAVED \|
	622	SNDRV_PCM_INFO_MMAP \|
	623	SNDRV_PCM_INFO_MMAP_VALID \|
	624	SNDRV_PCM_INFO_PAUSE,
	625	.formats = RSND_FMTS,
	626	.rates = RSND_RATES,
	627	.rate_min = 8000,
	628	.rate_max = 192000,
	629	.channels_min = 2,
	630	.channels_max = 2,
	631	.buffer_bytes_max = 64 * 1024,
	632	.period_bytes_min = 32,
	633	.period_bytes_max = 8192,
	634	.periods_min = 1,
	635	.periods_max = 32,
	636	.fifo_size = 256,
	637	};
	638
	639	static int rsnd_pcm_open(struct snd_pcm_substream *substream)
	640	{
	641	struct snd_pcm_runtime *runtime = substream->runtime;
	642	int ret = 0;
	643
	644	snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
	645
	646	ret = snd_pcm_hw_constraint_integer(runtime,
	647	SNDRV_PCM_HW_PARAM_PERIODS);
	648
	649	return ret;
	650	}
	651
	652	static int rsnd_hw_params(struct snd_pcm_substream *substream,
	653	struct snd_pcm_hw_params *hw_params)
	654	{
	655	return snd_pcm_lib_malloc_pages(substream,
	656	params_buffer_bytes(hw_params));
	657	}
	658
	659	static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
	660	{
	661	struct snd_pcm_runtime *runtime = substream->runtime;
	662	struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
	663	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
	664	struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
	665
	666	return bytes_to_frames(runtime, io->byte_pos);
667	}
668
669	static struct snd_pcm_ops rsnd_pcm_ops = {
670	.open = rsnd_pcm_open,
671	.ioctl = snd_pcm_lib_ioctl,
672	.hw_params = rsnd_hw_params,
673	.hw_free = snd_pcm_lib_free_pages,
674	.pointer = rsnd_pointer,
675	};
676
677	/*
678	* snd_soc_platform
679	*/
680
681	#define PREALLOC_BUFFER (32 * 1024)
682	#define PREALLOC_BUFFER_MAX (32 * 1024)
683
684	static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
685	{
686	return snd_pcm_lib_preallocate_pages_for_all(
687	rtd->pcm,
688	SNDRV_DMA_TYPE_DEV,
689	rtd->card->snd_card->dev,
690	PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
691	}
692
693	static void rsnd_pcm_free(struct snd_pcm *pcm)
694	{
695	snd_pcm_lib_preallocate_free_for_all(pcm);
696	}
697
698	static struct snd_soc_platform_driver rsnd_soc_platform = {
699	.ops = &rsnd_pcm_ops,
700	.pcm_new = rsnd_pcm_new,
701	.pcm_free = rsnd_pcm_free,
702	};
703
704	static const struct snd_soc_component_driver rsnd_soc_component = {
705	.name = "rsnd",
706	};
707
708	/*
709	* rsnd probe
710	*/
711	static int rsnd_probe(struct platform_device *pdev)
712	{
713	struct rcar_snd_info *info;
714	struct rsnd_priv *priv;
715	struct device *dev = &pdev->dev;
716	int ret;
717
718	info = pdev->dev.platform_data;
719	if (!info) {
720	dev_err(dev, "driver needs R-Car sound information\n");
721	return -ENODEV;
722	}
723
724	/*
725	* init priv data
726	*/
727	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
728	if (!priv) {
729	dev_err(dev, "priv allocate failed\n");
730	return -ENODEV;
731	}
732
733	priv->dev = dev;
734	priv->info = info;
735	spin_lock_init(&priv->lock);
736
737	/*
738	* init each module
739	*/
3337744a KM	740	ret = rsnd_gen_probe(pdev, info, priv);
	741	if (ret < 0)
	742	return ret;
	743
07539c1d KM	744	ret = rsnd_scu_probe(pdev, info, priv);
	745	if (ret < 0)
	746	return ret;
	747
dfc9403b KM	748	ret = rsnd_adg_probe(pdev, info, priv);
	749	if (ret < 0)
	750	return ret;
	751
ae5c3223 KM	752	ret = rsnd_ssi_probe(pdev, info, priv);
	753	if (ret < 0)
	754	return ret;
	755
4b4dab82 KM	756	ret = rsnd_dai_probe(pdev, info, priv);
	757	if (ret < 0)
	758	return ret;
	759
1536a968 KM	760	/*
	761	* asoc register
	762	*/
	763	ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
	764	if (ret < 0) {
	765	dev_err(dev, "cannot snd soc register\n");
	766	return ret;
	767	}
	768
	769	ret = snd_soc_register_component(dev, &rsnd_soc_component,
	770	priv->daidrv, rsnd_dai_nr(priv));
	771	if (ret < 0) {
	772	dev_err(dev, "cannot snd dai register\n");
	773	goto exit_snd_soc;
	774	}
	775
	776	dev_set_drvdata(dev, priv);
	777
	778	pm_runtime_enable(dev);
	779
	780	dev_info(dev, "probed\n");
	781	return ret;
	782
	783	exit_snd_soc:
	784	snd_soc_unregister_platform(dev);
	785
	786	return ret;
	787	}
	788
	789	static int rsnd_remove(struct platform_device *pdev)
	790	{
	791	struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
	792
	793	pm_runtime_disable(&pdev->dev);
	794
	795	/*
	796	* remove each module
	797	*/
ae5c3223	798	rsnd_ssi_remove(pdev, priv);
dfc9403b	799	rsnd_adg_remove(pdev, priv);
07539c1d	800	rsnd_scu_remove(pdev, priv);
1536a968	801	rsnd_dai_remove(pdev, priv);
3337744a	802	rsnd_gen_remove(pdev, priv);
1536a968 KM	803
	804	return 0;
	805	}
	806
	807	static struct platform_driver rsnd_driver = {
	808	.driver = {
	809	.name = "rcar_sound",
	810	},
	811	.probe = rsnd_probe,
	812	.remove = rsnd_remove,
	813	};
	814	module_platform_driver(rsnd_driver);
	815
	816	MODULE_LICENSE("GPL");
	817	MODULE_DESCRIPTION("Renesas R-Car audio driver");
	818	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
	819	MODULE_ALIAS("platform:rcar-pcm-audio");