[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 <linux/shdma-base.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_start(struct rsnd_dma *dma);
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->offset = 0;
	dma->submit_loop = 2;
	__rsnd_dma_start(dma);
}

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_mod *mod = rsnd_dma_to_mod(dma);
	struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
	unsigned long flags;

	rsnd_lock(priv, flags);

	/*
	 * Renesas sound Gen1 needs 1 DMAC,
	 * Gen2 needs 2 DMAC.
	 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
	 * But, Audio-DMAC-peri-peri doesn't have interrupt,
	 * and this driver is assuming that here.
	 *
	 * If Audio-DMAC-peri-peri has interrpt,
	 * rsnd_dai_pointer_update() will be called twice,
	 * ant it will breaks io->byte_pos
	 */

	rsnd_dai_pointer_update(io, io->byte_per_period);

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

	rsnd_unlock(priv, flags);
}

static void __rsnd_dma_start(struct rsnd_dma *dma)
{
	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
	struct device *dev = rsnd_priv_to_dev(priv);
	struct dma_async_tx_descriptor *desc;
	dma_addr_t buf;
	size_t len = io->byte_per_period;
	int i;

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

		buf = runtime->dma_addr +
			rsnd_dai_pointer_offset(io, dma->offset + len);
		dma->offset = len;

		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);
	}
}

static void rsnd_dma_do_work(struct work_struct *work)
{
	struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);

	__rsnd_dma_start(dma);
}

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

int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
		  int is_play, int id)
{
	struct device *dev = rsnd_priv_to_dev(priv);
	struct dma_slave_config cfg;
	dma_cap_mask_t mask;
	int ret;

	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->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
						     (void *)id, dev,
						     is_play ? "tx" : "rx");
	if (!dma->chan) {
		dev_err(dev, "can't get dma channel\n");
		return -EIO;
	}

	cfg.slave_id	= id;
	cfg.dst_addr	= 0; /* use default addr when playback */
	cfg.src_addr	= 0; /* use default addr when capture */
	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;

	ret = dmaengine_slave_config(dma->chan, &cfg);
	if (ret < 0)
		goto rsnd_dma_init_err;

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

	return 0;

rsnd_dma_init_err:
	rsnd_dma_quit(priv, dma);

	return ret;
}

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)
{
	if (!mod)
		return -EIO;

	if (!list_empty(&mod->list)) {
		struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
		struct device *dev = rsnd_priv_to_dev(priv);

		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);
	mod->io = io;

	return 0;
}

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

	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,
	.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)
		return ret;

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

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

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

	ret = rsnd_dai_probe(pdev, info, priv);
	if (ret)
		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>
9ade09d6	97	#include <linux/shdma-base.h>
1536a968 KM	98	#include "rsnd.h"
	99
	100	#define RSND_RATES SNDRV_PCM_RATE_8000_96000
	101	#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S16_LE)
	102
	103	/*
	104	* rsnd_platform functions
	105	*/
	106	#define rsnd_platform_call(priv, dai, func, param...) \
740ad6c3	107	(!(priv->info->func) ? 0 : \
1536a968 KM	108	priv->info->func(param))
1536a968 KM	109
cdaa3cdf KM	110	/*
	111	* rsnd_mod functions
	112	*/
	113	char rsnd_mod_name(struct rsnd_mod mod)
	114	{
	115	if (!mod \|\| !mod->ops)
	116	return "unknown";
	117
	118	return mod->ops->name;
	119	}
	120
	121	void rsnd_mod_init(struct rsnd_priv *priv,
	122	struct rsnd_mod *mod,
	123	struct rsnd_mod_ops *ops,
	124	int id)
	125	{
	126	mod->priv = priv;
	127	mod->id = id;
	128	mod->ops = ops;
	129	INIT_LIST_HEAD(&mod->list);
	130	}
	131
0a4d94c0 KM	132	/*
	133	* rsnd_dma functions
	134	*/
f5cab3b8	135	static void __rsnd_dma_start(struct rsnd_dma *dma);
0a4d94c0 KM	136	static void rsnd_dma_continue(struct rsnd_dma *dma)
	137	{
	138	/* push next A or B plane */
	139	dma->submit_loop = 1;
	140	schedule_work(&dma->work);
	141	}
	142
	143	void rsnd_dma_start(struct rsnd_dma *dma)
	144	{
	145	/* push both A and B plane*/
4686a0ad	146	dma->offset = 0;
0a4d94c0	147	dma->submit_loop = 2;
f5cab3b8	148	__rsnd_dma_start(dma);
0a4d94c0 KM	149	}
	150
	151	void rsnd_dma_stop(struct rsnd_dma *dma)
	152	{
	153	dma->submit_loop = 0;
	154	cancel_work_sync(&dma->work);
	155	dmaengine_terminate_all(dma->chan);
	156	}
	157
	158	static void rsnd_dma_complete(void *data)
	159	{
	160	struct rsnd_dma dma = (struct rsnd_dma )data;
4686a0ad	161	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
9b5ab573	162	struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
4686a0ad	163	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
0a4d94c0 KM	164	unsigned long flags;
	165
	166	rsnd_lock(priv, flags);
	167
4686a0ad KM	168	/*
	169	* Renesas sound Gen1 needs 1 DMAC,
	170	* Gen2 needs 2 DMAC.
	171	* In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
	172	* But, Audio-DMAC-peri-peri doesn't have interrupt,
	173	* and this driver is assuming that here.
	174	*
	175	* If Audio-DMAC-peri-peri has interrpt,
	176	* rsnd_dai_pointer_update() will be called twice,
	177	* ant it will breaks io->byte_pos
	178	*/
	179
	180	rsnd_dai_pointer_update(io, io->byte_per_period);
0a4d94c0 KM	181
	182	if (dma->submit_loop)
	183	rsnd_dma_continue(dma);
	184
	185	rsnd_unlock(priv, flags);
	186	}
	187
f5cab3b8	188	static void __rsnd_dma_start(struct rsnd_dma *dma)
0a4d94c0	189	{
4686a0ad KM	190	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
	191	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	192	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
	193	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
0a4d94c0 KM	194	struct device *dev = rsnd_priv_to_dev(priv);
	195	struct dma_async_tx_descriptor *desc;
	196	dma_addr_t buf;
4686a0ad	197	size_t len = io->byte_per_period;
0a4d94c0 KM	198	int i;
	199
	200	for (i = 0; i < dma->submit_loop; i++) {
	201
4686a0ad KM	202	buf = runtime->dma_addr +
	203	rsnd_dai_pointer_offset(io, dma->offset + len);
	204	dma->offset = len;
0a4d94c0 KM	205
	206	desc = dmaengine_prep_slave_single(
	207	dma->chan, buf, len, dma->dir,
	208	DMA_PREP_INTERRUPT \| DMA_CTRL_ACK);
	209	if (!desc) {
	210	dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
	211	return;
	212	}
	213
	214	desc->callback = rsnd_dma_complete;
	215	desc->callback_param = dma;
	216
	217	if (dmaengine_submit(desc) < 0) {
	218	dev_err(dev, "dmaengine_submit() fail\n");
	219	return;
	220	}
	221
a0d32bca	222	dma_async_issue_pending(dma->chan);
0a4d94c0	223	}
0a4d94c0 KM	224	}
0a4d94c0 KM	225
f5cab3b8 KM	226	static void rsnd_dma_do_work(struct work_struct *work)
	227	{
	228	struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);
	229
	230	__rsnd_dma_start(dma);
	231	}
	232
0a4d94c0 KM	233	int rsnd_dma_available(struct rsnd_dma *dma)
	234	{
	235	return !!dma->chan;
	236	}
	237
0a4d94c0	238	int rsnd_dma_init(struct rsnd_priv priv, struct rsnd_dma dma,
4686a0ad	239	int is_play, int id)
0a4d94c0 KM	240	{
0a4d94c0 KM	241	struct device *dev = rsnd_priv_to_dev(priv);
9ade09d6	242	struct dma_slave_config cfg;
0a4d94c0	243	dma_cap_mask_t mask;
9ade09d6	244	int ret;
0a4d94c0 KM	245
	246	if (dma->chan) {
	247	dev_err(dev, "it already has dma channel\n");
	248	return -EIO;
	249	}
	250
	251	dma_cap_zero(mask);
	252	dma_cap_set(DMA_SLAVE, mask);
	253
9ade09d6 KM	254	dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
	255	(void *)id, dev,
	256	is_play ? "tx" : "rx");
0a4d94c0 KM	257	if (!dma->chan) {
	258	dev_err(dev, "can't get dma channel\n");
	259	return -EIO;
	260	}
	261
9ade09d6 KM	262	cfg.slave_id = id;
	263	cfg.dst_addr = 0; /* use default addr when playback */
	264	cfg.src_addr = 0; /* use default addr when capture */
	265	cfg.direction = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
	266
	267	ret = dmaengine_slave_config(dma->chan, &cfg);
	268	if (ret < 0)
	269	goto rsnd_dma_init_err;
	270
0a4d94c0	271	dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
0a4d94c0 KM	272	INIT_WORK(&dma->work, rsnd_dma_do_work);
	273
	274	return 0;
9ade09d6 KM	275
	276	rsnd_dma_init_err:
	277	rsnd_dma_quit(priv, dma);
	278
	279	return ret;
0a4d94c0 KM	280	}
	281
	282	void rsnd_dma_quit(struct rsnd_priv *priv,
	283	struct rsnd_dma *dma)
	284	{
	285	if (dma->chan)
	286	dma_release_channel(dma->chan);
	287
	288	dma->chan = NULL;
	289	}
	290
1536a968 KM	291	/*
	292	* rsnd_dai functions
	293	*/
cdaa3cdf KM	294	#define rsnd_dai_call(rdai, io, fn) \
	295	({ \
	296	struct rsnd_mod mod, n; \
	297	int ret = 0; \
	298	for_each_rsnd_mod(mod, n, io) { \
	299	ret = rsnd_mod_call(mod, fn, rdai, io); \
	300	if (ret < 0) \
	301	break; \
	302	} \
	303	ret; \
	304	})
	305
	306	int rsnd_dai_connect(struct rsnd_dai *rdai,
	307	struct rsnd_mod *mod,
	308	struct rsnd_dai_stream *io)
	309	{
6020779b	310	if (!mod)
cdaa3cdf	311	return -EIO;
cdaa3cdf KM	312
cdaa3cdf KM	313	if (!list_empty(&mod->list)) {
6020779b KM	314	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	315	struct device *dev = rsnd_priv_to_dev(priv);
	316
cdaa3cdf KM	317	dev_err(dev, "%s%d is not empty\n",
	318	rsnd_mod_name(mod),
	319	rsnd_mod_id(mod));
	320	return -EIO;
	321	}
	322
	323	list_add_tail(&mod->list, &io->head);
4686a0ad	324	mod->io = io;
cdaa3cdf KM	325
	326	return 0;
	327	}
	328
	329	int rsnd_dai_disconnect(struct rsnd_mod *mod)
	330	{
	331	list_del_init(&mod->list);
4686a0ad	332	mod->io = NULL;
cdaa3cdf KM	333
	334	return 0;
	335	}
	336
4b4dab82 KM	337	int rsnd_dai_id(struct rsnd_priv priv, struct rsnd_dai rdai)
	338	{
	339	int id = rdai - priv->rdai;
	340
	341	if ((id < 0) \|\| (id >= rsnd_dai_nr(priv)))
	342	return -EINVAL;
	343
	344	return id;
	345	}
	346
1536a968 KM	347	struct rsnd_dai rsnd_dai_get(struct rsnd_priv priv, int id)
1536a968 KM	348	{
2192f81c KM	349	if ((id < 0) \|\| (id >= rsnd_dai_nr(priv)))
	350	return NULL;
	351
1536a968 KM	352	return priv->rdai + id;
	353	}
	354
	355	static struct rsnd_dai rsnd_dai_to_rdai(struct snd_soc_dai dai)
	356	{
	357	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
	358
	359	return rsnd_dai_get(priv, dai->id);
	360	}
	361
	362	int rsnd_dai_is_play(struct rsnd_dai rdai, struct rsnd_dai_stream io)
	363	{
	364	return &rdai->playback == io;
	365	}
	366
	367	/*
	368	* rsnd_soc_dai functions
	369	*/
	370	int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
	371	{
	372	struct snd_pcm_substream *substream = io->substream;
	373	struct snd_pcm_runtime *runtime = substream->runtime;
	374	int pos = io->byte_pos + additional;
	375
	376	pos %= (runtime->periods * io->byte_per_period);
	377
	378	return pos;
	379	}
	380
	381	void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
	382	{
	383	io->byte_pos += byte;
	384
	385	if (io->byte_pos >= io->next_period_byte) {
	386	struct snd_pcm_substream *substream = io->substream;
	387	struct snd_pcm_runtime *runtime = substream->runtime;
	388
	389	io->period_pos++;
	390	io->next_period_byte += io->byte_per_period;
	391
	392	if (io->period_pos >= runtime->periods) {
	393	io->byte_pos = 0;
	394	io->period_pos = 0;
	395	io->next_period_byte = io->byte_per_period;
	396	}
	397
	398	snd_pcm_period_elapsed(substream);
	399	}
	400	}
	401
	402	static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
	403	struct snd_pcm_substream *substream)
	404	{
	405	struct snd_pcm_runtime *runtime = substream->runtime;
	406
	407	if (!list_empty(&io->head))
	408	return -EIO;
	409
	410	INIT_LIST_HEAD(&io->head);
	411	io->substream = substream;
	412	io->byte_pos = 0;
	413	io->period_pos = 0;
	414	io->byte_per_period = runtime->period_size *
	415	runtime->channels *
416	samples_to_bytes(runtime, 1);
417	io->next_period_byte = io->byte_per_period;
418
419	return 0;
420	}
421
422	static
423	struct snd_soc_dai rsnd_substream_to_dai(struct snd_pcm_substream substream)
424	{
425	struct snd_soc_pcm_runtime *rtd = substream->private_data;
426
427	return rtd->cpu_dai;
428	}
429
430	static
431	struct rsnd_dai_stream rsnd_rdai_to_io(struct rsnd_dai rdai,
432	struct snd_pcm_substream *substream)
433	{
434	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
435	return &rdai->playback;
436	else
437	return &rdai->capture;
438	}
439
440	static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
441	struct snd_soc_dai *dai)
442	{
443	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
444	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
445	struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
4b4dab82 KM	446	struct rsnd_mod *mod = rsnd_ssi_mod_get_frm_dai(priv,
	447	rsnd_dai_id(priv, rdai),
	448	rsnd_dai_is_play(rdai, io));
	449	int ssi_id = rsnd_mod_id(mod);
1536a968 KM	450	int ret;
	451	unsigned long flags;
	452
	453	rsnd_lock(priv, flags);
	454
	455	switch (cmd) {
	456	case SNDRV_PCM_TRIGGER_START:
	457	ret = rsnd_dai_stream_init(io, substream);
	458	if (ret < 0)
	459	goto dai_trigger_end;
	460
	461	ret = rsnd_platform_call(priv, dai, start, ssi_id);
	462	if (ret < 0)
	463	goto dai_trigger_end;
	464
3337744a KM	465	ret = rsnd_gen_path_init(priv, rdai, io);
	466	if (ret < 0)
	467	goto dai_trigger_end;
	468
cdaa3cdf KM	469	ret = rsnd_dai_call(rdai, io, init);
	470	if (ret < 0)
	471	goto dai_trigger_end;
	472
	473	ret = rsnd_dai_call(rdai, io, start);
	474	if (ret < 0)
	475	goto dai_trigger_end;
1536a968 KM	476	break;
1536a968 KM	477	case SNDRV_PCM_TRIGGER_STOP:
cdaa3cdf KM	478	ret = rsnd_dai_call(rdai, io, stop);
	479	if (ret < 0)
	480	goto dai_trigger_end;
	481
	482	ret = rsnd_dai_call(rdai, io, quit);
	483	if (ret < 0)
	484	goto dai_trigger_end;
	485
3337744a	486	ret = rsnd_gen_path_exit(priv, rdai, io);
1536a968 KM	487	if (ret < 0)
	488	goto dai_trigger_end;
	489
3337744a KM	490	ret = rsnd_platform_call(priv, dai, stop, ssi_id);
	491	if (ret < 0)
	492	goto dai_trigger_end;
1536a968 KM	493	break;
	494	default:
	495	ret = -EINVAL;
	496	}
	497
	498	dai_trigger_end:
	499	rsnd_unlock(priv, flags);
	500
	501	return ret;
	502	}
	503
	504	static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
	505	{
	506	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
	507
	508	/* set master/slave audio interface */
	509	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	510	case SND_SOC_DAIFMT_CBM_CFM:
	511	rdai->clk_master = 1;
	512	break;
	513	case SND_SOC_DAIFMT_CBS_CFS:
	514	rdai->clk_master = 0;
	515	break;
	516	default:
	517	return -EINVAL;
	518	}
	519
	520	/* set clock inversion */
	521	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	522	case SND_SOC_DAIFMT_NB_IF:
	523	rdai->bit_clk_inv = 0;
	524	rdai->frm_clk_inv = 1;
	525	break;
	526	case SND_SOC_DAIFMT_IB_NF:
	527	rdai->bit_clk_inv = 1;
	528	rdai->frm_clk_inv = 0;
	529	break;
	530	case SND_SOC_DAIFMT_IB_IF:
	531	rdai->bit_clk_inv = 1;
	532	rdai->frm_clk_inv = 1;
	533	break;
	534	case SND_SOC_DAIFMT_NB_NF:
	535	default:
	536	rdai->bit_clk_inv = 0;
	537	rdai->frm_clk_inv = 0;
	538	break;
	539	}
	540
	541	/* set format */
	542	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	543	case SND_SOC_DAIFMT_I2S:
	544	rdai->sys_delay = 0;
	545	rdai->data_alignment = 0;
	546	break;
	547	case SND_SOC_DAIFMT_LEFT_J:
	548	rdai->sys_delay = 1;
	549	rdai->data_alignment = 0;
	550	break;
	551	case SND_SOC_DAIFMT_RIGHT_J:
	552	rdai->sys_delay = 1;
	553	rdai->data_alignment = 1;
	554	break;
	555	}
	556
557	return 0;
558	}
559
560	static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
561	.trigger = rsnd_soc_dai_trigger,
562	.set_fmt = rsnd_soc_dai_set_fmt,
563	};
564
565	static int rsnd_dai_probe(struct platform_device *pdev,
566	struct rcar_snd_info *info,
567	struct rsnd_priv *priv)
568	{
569	struct snd_soc_dai_driver *drv;
570	struct rsnd_dai *rdai;
4b4dab82	571	struct rsnd_mod pmod, cmod;
1536a968	572	struct device *dev = rsnd_priv_to_dev(priv);
4b4dab82 KM	573	int dai_nr;
	574	int i;
	575
	576	/* get max dai nr */
	577	for (dai_nr = 0; dai_nr < 32; dai_nr++) {
	578	pmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 1);
	579	cmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 0);
	580
	581	if (!pmod && !cmod)
	582	break;
	583	}
	584
	585	if (!dai_nr) {
	586	dev_err(dev, "no dai\n");
	587	return -EIO;
	588	}
1536a968 KM	589
	590	drv = devm_kzalloc(dev, sizeof(drv) dai_nr, GFP_KERNEL);
	591	rdai = devm_kzalloc(dev, sizeof(rdai) dai_nr, GFP_KERNEL);
	592	if (!drv \|\| !rdai) {
	593	dev_err(dev, "dai allocate failed\n");
	594	return -ENOMEM;
	595	}
	596
	597	for (i = 0; i < dai_nr; i++) {
1536a968	598
4b4dab82 KM	599	pmod = rsnd_ssi_mod_get_frm_dai(priv, i, 1);
4b4dab82 KM	600	cmod = rsnd_ssi_mod_get_frm_dai(priv, i, 0);
1536a968 KM	601
	602	/*
	603	* init rsnd_dai
	604	*/
	605	INIT_LIST_HEAD(&rdai[i].playback.head);
	606	INIT_LIST_HEAD(&rdai[i].capture.head);
	607
1536a968 KM	608	snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
	609
	610	/*
	611	* init snd_soc_dai_driver
	612	*/
	613	drv[i].name = rdai[i].name;
	614	drv[i].ops = &rsnd_soc_dai_ops;
4b4dab82	615	if (pmod) {
1536a968 KM	616	drv[i].playback.rates = RSND_RATES;
	617	drv[i].playback.formats = RSND_FMTS;
	618	drv[i].playback.channels_min = 2;
	619	drv[i].playback.channels_max = 2;
	620	}
4b4dab82	621	if (cmod) {
1536a968 KM	622	drv[i].capture.rates = RSND_RATES;
	623	drv[i].capture.formats = RSND_FMTS;
	624	drv[i].capture.channels_min = 2;
	625	drv[i].capture.channels_max = 2;
	626	}
	627
4b4dab82 KM	628	dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
	629	pmod ? "play" : " -- ",
	630	cmod ? "capture" : " -- ");
1536a968 KM	631	}
	632
	633	priv->dai_nr = dai_nr;
	634	priv->daidrv = drv;
	635	priv->rdai = rdai;
	636
	637	return 0;
	638	}
	639
	640	static void rsnd_dai_remove(struct platform_device *pdev,
	641	struct rsnd_priv *priv)
	642	{
	643	}
	644
	645	/*
	646	* pcm ops
	647	*/
	648	static struct snd_pcm_hardware rsnd_pcm_hardware = {
	649	.info = SNDRV_PCM_INFO_INTERLEAVED \|
	650	SNDRV_PCM_INFO_MMAP \|
	651	SNDRV_PCM_INFO_MMAP_VALID \|
	652	SNDRV_PCM_INFO_PAUSE,
1536a968 KM	653	.buffer_bytes_max = 64 * 1024,
	654	.period_bytes_min = 32,
	655	.period_bytes_max = 8192,
	656	.periods_min = 1,
	657	.periods_max = 32,
	658	.fifo_size = 256,
	659	};
	660
	661	static int rsnd_pcm_open(struct snd_pcm_substream *substream)
	662	{
	663	struct snd_pcm_runtime *runtime = substream->runtime;
	664	int ret = 0;
	665
	666	snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
	667
	668	ret = snd_pcm_hw_constraint_integer(runtime,
	669	SNDRV_PCM_HW_PARAM_PERIODS);
	670
	671	return ret;
	672	}
	673
	674	static int rsnd_hw_params(struct snd_pcm_substream *substream,
	675	struct snd_pcm_hw_params *hw_params)
	676	{
	677	return snd_pcm_lib_malloc_pages(substream,
	678	params_buffer_bytes(hw_params));
	679	}
	680
	681	static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
	682	{
	683	struct snd_pcm_runtime *runtime = substream->runtime;
	684	struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
	685	struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
	686	struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
	687
	688	return bytes_to_frames(runtime, io->byte_pos);
	689	}
	690
	691	static struct snd_pcm_ops rsnd_pcm_ops = {
	692	.open = rsnd_pcm_open,
	693	.ioctl = snd_pcm_lib_ioctl,
	694	.hw_params = rsnd_hw_params,
	695	.hw_free = snd_pcm_lib_free_pages,
	696	.pointer = rsnd_pointer,
	697	};
	698
	699	/*
	700	* snd_soc_platform
	701	*/
	702
	703	#define PREALLOC_BUFFER (32 * 1024)
	704	#define PREALLOC_BUFFER_MAX (32 * 1024)
	705
	706	static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
	707	{
	708	return snd_pcm_lib_preallocate_pages_for_all(
	709	rtd->pcm,
	710	SNDRV_DMA_TYPE_DEV,
	711	rtd->card->snd_card->dev,
	712	PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
	713	}
	714
	715	static void rsnd_pcm_free(struct snd_pcm *pcm)
	716	{
717	snd_pcm_lib_preallocate_free_for_all(pcm);
718	}
719
720	static struct snd_soc_platform_driver rsnd_soc_platform = {
721	.ops = &rsnd_pcm_ops,
722	.pcm_new = rsnd_pcm_new,
723	.pcm_free = rsnd_pcm_free,
724	};
725
726	static const struct snd_soc_component_driver rsnd_soc_component = {
727	.name = "rsnd",
728	};
729
730	/*
731	* rsnd probe
732	*/
733	static int rsnd_probe(struct platform_device *pdev)
734	{
735	struct rcar_snd_info *info;
736	struct rsnd_priv *priv;
737	struct device *dev = &pdev->dev;
738	int ret;
739
740	info = pdev->dev.platform_data;
741	if (!info) {
742	dev_err(dev, "driver needs R-Car sound information\n");
743	return -ENODEV;
744	}
745
746	/*
747	* init priv data
748	*/
749	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
750	if (!priv) {
751	dev_err(dev, "priv allocate failed\n");
752	return -ENODEV;
753	}
754
755	priv->dev = dev;
756	priv->info = info;
757	spin_lock_init(&priv->lock);
758
759	/*
760	* init each module
761	*/
3337744a	762	ret = rsnd_gen_probe(pdev, info, priv);
106d2eff	763	if (ret)
3337744a KM	764	return ret;
3337744a KM	765
eb854f6d	766	ret = rsnd_ssi_probe(pdev, info, priv);
106d2eff	767	if (ret)
07539c1d KM	768	return ret;
07539c1d KM	769
eb854f6d	770	ret = rsnd_scu_probe(pdev, info, priv);
106d2eff	771	if (ret)
dfc9403b KM	772	return ret;
dfc9403b KM	773
eb854f6d	774	ret = rsnd_adg_probe(pdev, info, priv);
106d2eff	775	if (ret)
ae5c3223 KM	776	return ret;
ae5c3223 KM	777
4b4dab82	778	ret = rsnd_dai_probe(pdev, info, priv);
106d2eff	779	if (ret)
4b4dab82 KM	780	return ret;
4b4dab82 KM	781
1536a968 KM	782	/*
	783	* asoc register
	784	*/
	785	ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
	786	if (ret < 0) {
	787	dev_err(dev, "cannot snd soc register\n");
	788	return ret;
	789	}
	790
	791	ret = snd_soc_register_component(dev, &rsnd_soc_component,
	792	priv->daidrv, rsnd_dai_nr(priv));
	793	if (ret < 0) {
	794	dev_err(dev, "cannot snd dai register\n");
	795	goto exit_snd_soc;
	796	}
	797
	798	dev_set_drvdata(dev, priv);
	799
	800	pm_runtime_enable(dev);
	801
	802	dev_info(dev, "probed\n");
	803	return ret;
	804
	805	exit_snd_soc:
	806	snd_soc_unregister_platform(dev);
	807
	808	return ret;
	809	}
	810
	811	static int rsnd_remove(struct platform_device *pdev)
	812	{
	813	struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
	814
	815	pm_runtime_disable(&pdev->dev);
	816
	817	/*
	818	* remove each module
	819	*/
ae5c3223	820	rsnd_ssi_remove(pdev, priv);
dfc9403b	821	rsnd_adg_remove(pdev, priv);
07539c1d	822	rsnd_scu_remove(pdev, priv);
1536a968	823	rsnd_dai_remove(pdev, priv);
3337744a	824	rsnd_gen_remove(pdev, priv);
1536a968 KM	825
	826	return 0;
	827	}
	828
	829	static struct platform_driver rsnd_driver = {
	830	.driver = {
	831	.name = "rcar_sound",
	832	},
	833	.probe = rsnd_probe,
	834	.remove = rsnd_remove,
	835	};
	836	module_platform_driver(rsnd_driver);
	837
	838	MODULE_LICENSE("GPL");
	839	MODULE_DESCRIPTION("Renesas R-Car audio driver");
	840	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
	841	MODULE_ALIAS("platform:rcar-pcm-audio");