[deliverable/linux.git] / sound / soc / soc-compress.c

/*
 * soc-compress.c  --  ALSA SoC Compress
 *
 * Copyright (C) 2012 Intel Corp.
 *
 * Authors: Namarta Kohli <namartax.kohli@intel.com>
 *          Ramesh Babu K V <ramesh.babu@linux.intel.com>
 *          Vinod Koul <vinod.koul@linux.intel.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <sound/core.h>
#include <sound/compress_params.h>
#include <sound/compress_driver.h>
#include <sound/soc.h>
#include <sound/initval.h>

static int soc_compr_open(struct snd_compr_stream *cstream)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
		ret = platform->driver->compr_ops->open(cstream);
		if (ret < 0) {
			pr_err("compress asoc: can't open platform %s\n", platform->name);
			goto out;
		}
	}

	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
		ret = rtd->dai_link->compr_ops->startup(cstream);
		if (ret < 0) {
			pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name);
			goto machine_err;
		}
	}

	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
		cpu_dai->playback_active++;
		codec_dai->playback_active++;
	} else {
		cpu_dai->capture_active++;
		codec_dai->capture_active++;
	}

	cpu_dai->active++;
	codec_dai->active++;
	rtd->codec->active++;

	mutex_unlock(&rtd->pcm_mutex);

	return 0;

machine_err:
	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
		platform->driver->compr_ops->free(cstream);
out:
	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

/*
 * Power down the audio subsystem pmdown_time msecs after close is called.
 * This is to ensure there are no pops or clicks in between any music tracks
 * due to DAPM power cycling.
 */
static void close_delayed_work(struct work_struct *work)
{
	struct snd_soc_pcm_runtime *rtd =
			container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
	struct snd_soc_dai *codec_dai = rtd->codec_dai;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
		 codec_dai->driver->playback.stream_name,
		 codec_dai->playback_active ? "active" : "inactive",
		 rtd->pop_wait ? "yes" : "no");

	/* are we waiting on this codec DAI stream */
	if (rtd->pop_wait == 1) {
		rtd->pop_wait = 0;
		snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
					  SND_SOC_DAPM_STREAM_STOP);
	}

	mutex_unlock(&rtd->pcm_mutex);
}

static int soc_compr_free(struct snd_compr_stream *cstream)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = rtd->codec;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
		cpu_dai->playback_active--;
		codec_dai->playback_active--;
	} else {
		cpu_dai->capture_active--;
		codec_dai->capture_active--;
	}

	snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);

	cpu_dai->active--;
	codec_dai->active--;
	codec->active--;

	if (!cpu_dai->active)
		cpu_dai->rate = 0;

	if (!codec_dai->active)
		codec_dai->rate = 0;


	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
		rtd->dai_link->compr_ops->shutdown(cstream);

	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
		platform->driver->compr_ops->free(cstream);
	cpu_dai->runtime = NULL;

	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
		if (!rtd->pmdown_time || codec->ignore_pmdown_time ||
		    rtd->dai_link->ignore_pmdown_time) {
			snd_soc_dapm_stream_event(rtd,
					SNDRV_PCM_STREAM_PLAYBACK,
					SND_SOC_DAPM_STREAM_STOP);
		} else {
			rtd->pop_wait = 1;
			queue_delayed_work(system_power_efficient_wq,
					   &rtd->delayed_work,
					   msecs_to_jiffies(rtd->pmdown_time));
		}
	} else {
		/* capture streams can be powered down now */
		snd_soc_dapm_stream_event(rtd,
			SNDRV_PCM_STREAM_CAPTURE,
			SND_SOC_DAPM_STREAM_STOP);
	}

	mutex_unlock(&rtd->pcm_mutex);
	return 0;
}

static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
{

	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
		ret = platform->driver->compr_ops->trigger(cstream, cmd);
		if (ret < 0)
			goto out;
	}

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
		break;
	}

out:
	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_set_params(struct snd_compr_stream *cstream,
					struct snd_compr_params *params)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	/* first we call set_params for the platform driver
	 * this should configure the soc side
	 * if the machine has compressed ops then we call that as well
	 * expectation is that platform and machine will configure everything
	 * for this compress path, like configuring pcm port for codec
	 */
	if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
		ret = platform->driver->compr_ops->set_params(cstream, params);
		if (ret < 0)
			goto err;
	}

	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
		ret = rtd->dai_link->compr_ops->set_params(cstream);
		if (ret < 0)
			goto err;
	}

	if (cstream->direction == SND_COMPRESS_PLAYBACK)
		snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
					SND_SOC_DAPM_STREAM_START);
	else
		snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
					SND_SOC_DAPM_STREAM_START);

	/* cancel any delayed stream shutdown that is pending */
	rtd->pop_wait = 0;
	mutex_unlock(&rtd->pcm_mutex);

	cancel_delayed_work_sync(&rtd->delayed_work);

	return ret;

err:
	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_get_params(struct snd_compr_stream *cstream,
					struct snd_codec *params)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->get_params)
		ret = platform->driver->compr_ops->get_params(cstream, params);

	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_get_caps(struct snd_compr_stream *cstream,
				struct snd_compr_caps *caps)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps)
		ret = platform->driver->compr_ops->get_caps(cstream, caps);

	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
				struct snd_compr_codec_caps *codec)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps)
		ret = platform->driver->compr_ops->get_codec_caps(cstream, codec);

	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->ack)
		ret = platform->driver->compr_ops->ack(cstream, bytes);

	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_pointer(struct snd_compr_stream *cstream,
			struct snd_compr_tstamp *tstamp)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->pointer)
		 platform->driver->compr_ops->pointer(cstream, tstamp);

	mutex_unlock(&rtd->pcm_mutex);
	return 0;
}

static int soc_compr_copy(struct snd_compr_stream *cstream,
			  char __user *buf, size_t count)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);

	if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
		ret = platform->driver->compr_ops->copy(cstream, buf, count);

	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
				struct snd_compr_metadata *metadata)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata)
		ret = platform->driver->compr_ops->set_metadata(cstream, metadata);

	return ret;
}

static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
				struct snd_compr_metadata *metadata)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_platform *platform = rtd->platform;
	int ret = 0;

	if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata)
		ret = platform->driver->compr_ops->get_metadata(cstream, metadata);

	return ret;
}
/* ASoC Compress operations */
static struct snd_compr_ops soc_compr_ops = {
	.open		= soc_compr_open,
	.free		= soc_compr_free,
	.set_params	= soc_compr_set_params,
	.set_metadata   = soc_compr_set_metadata,
	.get_metadata	= soc_compr_get_metadata,
	.get_params	= soc_compr_get_params,
	.trigger	= soc_compr_trigger,
	.pointer	= soc_compr_pointer,
	.ack		= soc_compr_ack,
	.get_caps	= soc_compr_get_caps,
	.get_codec_caps = soc_compr_get_codec_caps
};

/* create a new compress */
int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_compr *compr;
	char new_name[64];
	int ret = 0, direction = 0;

	/* check client and interface hw capabilities */
	snprintf(new_name, sizeof(new_name), "%s %s-%d",
			rtd->dai_link->stream_name, codec_dai->name, num);

	if (codec_dai->driver->playback.channels_min)
		direction = SND_COMPRESS_PLAYBACK;
	else if (codec_dai->driver->capture.channels_min)
		direction = SND_COMPRESS_CAPTURE;
	else
		return -EINVAL;

	compr = kzalloc(sizeof(*compr), GFP_KERNEL);
	if (compr == NULL) {
		snd_printk(KERN_ERR "Cannot allocate compr\n");
		return -ENOMEM;
	}

	compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
				  GFP_KERNEL);
	if (compr->ops == NULL) {
		dev_err(rtd->card->dev, "Cannot allocate compressed ops\n");
		ret = -ENOMEM;
		goto compr_err;
	}
	memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));

	/* Add copy callback for not memory mapped DSPs */
	if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
		compr->ops->copy = soc_compr_copy;

	mutex_init(&compr->lock);
	ret = snd_compress_new(rtd->card->snd_card, num, direction, compr);
	if (ret < 0) {
		pr_err("compress asoc: can't create compress for codec %s\n",
			codec->name);
		goto compr_err;
	}

	/* DAPM dai link stream work */
	INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);

	rtd->compr = compr;
	compr->private_data = rtd;

	printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name,
		cpu_dai->name);
	return ret;

compr_err:
	kfree(compr);
	return ret;
}
Commit	Line	Data
1245b700 NK	1	/*
	2	* soc-compress.c -- ALSA SoC Compress
	3	*
	4	* Copyright (C) 2012 Intel Corp.
	5	*
	6	* Authors: Namarta Kohli <namartax.kohli@intel.com>
	7	* Ramesh Babu K V <ramesh.babu@linux.intel.com>
	8	* Vinod Koul <vinod.koul@linux.intel.com>
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the
	12	* Free Software Foundation; either version 2 of the License, or (at your
	13	* option) any later version.
	14	*
	15	*/
	16
	17	#include <linux/kernel.h>
	18	#include <linux/init.h>
	19	#include <linux/delay.h>
	20	#include <linux/slab.h>
	21	#include <linux/workqueue.h>
	22	#include <sound/core.h>
	23	#include <sound/compress_params.h>
	24	#include <sound/compress_driver.h>
	25	#include <sound/soc.h>
	26	#include <sound/initval.h>
	27
	28	static int soc_compr_open(struct snd_compr_stream *cstream)
	29	{
	30	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	31	struct snd_soc_platform *platform = rtd->platform;
	32	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	33	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	34	int ret = 0;
	35
15e2e619 CK	36	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	37
1245b700 NK	38	if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
	39	ret = platform->driver->compr_ops->open(cstream);
	40	if (ret < 0) {
	41	pr_err("compress asoc: can't open platform %s\n", platform->name);
	42	goto out;
	43	}
	44	}
	45
	46	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
	47	ret = rtd->dai_link->compr_ops->startup(cstream);
	48	if (ret < 0) {
	49	pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name);
	50	goto machine_err;
	51	}
	52	}
	53
	54	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
	55	cpu_dai->playback_active++;
	56	codec_dai->playback_active++;
	57	} else {
	58	cpu_dai->capture_active++;
	59	codec_dai->capture_active++;
	60	}
	61
	62	cpu_dai->active++;
	63	codec_dai->active++;
	64	rtd->codec->active++;
	65
15e2e619 CK	66	mutex_unlock(&rtd->pcm_mutex);
15e2e619 CK	67
1245b700 NK	68	return 0;
	69
	70	machine_err:
	71	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
	72	platform->driver->compr_ops->free(cstream);
	73	out:
15e2e619	74	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	75	return ret;
	76	}
	77
202c8f70 CK	78	/*
	79	* Power down the audio subsystem pmdown_time msecs after close is called.
	80	* This is to ensure there are no pops or clicks in between any music tracks
	81	* due to DAPM power cycling.
	82	*/
	83	static void close_delayed_work(struct work_struct *work)
	84	{
	85	struct snd_soc_pcm_runtime *rtd =
	86	container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
	87	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	88
	89	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
	90
	91	dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
	92	codec_dai->driver->playback.stream_name,
	93	codec_dai->playback_active ? "active" : "inactive",
	94	rtd->pop_wait ? "yes" : "no");
	95
	96	/* are we waiting on this codec DAI stream */
	97	if (rtd->pop_wait == 1) {
	98	rtd->pop_wait = 0;
	99	snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
	100	SND_SOC_DAPM_STREAM_STOP);
	101	}
	102
	103	mutex_unlock(&rtd->pcm_mutex);
	104	}
	105
1245b700 NK	106	static int soc_compr_free(struct snd_compr_stream *cstream)
	107	{
	108	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	109	struct snd_soc_platform *platform = rtd->platform;
	110	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	111	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	112	struct snd_soc_codec *codec = rtd->codec;
	113
15e2e619 CK	114	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	115
1245b700 NK	116	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
	117	cpu_dai->playback_active--;
	118	codec_dai->playback_active--;
	119	} else {
	120	cpu_dai->capture_active--;
	121	codec_dai->capture_active--;
	122	}
	123
da18396f MB	124	snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
da18396f MB	125
1245b700 NK	126	cpu_dai->active--;
	127	codec_dai->active--;
	128	codec->active--;
	129
	130	if (!cpu_dai->active)
	131	cpu_dai->rate = 0;
	132
	133	if (!codec_dai->active)
	134	codec_dai->rate = 0;
	135
	136
	137	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
	138	rtd->dai_link->compr_ops->shutdown(cstream);
	139
	140	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
	141	platform->driver->compr_ops->free(cstream);
9d2667a9	142	cpu_dai->runtime = NULL;
1245b700 NK	143
	144	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
	145	if (!rtd->pmdown_time \|\| codec->ignore_pmdown_time \|\|
	146	rtd->dai_link->ignore_pmdown_time) {
	147	snd_soc_dapm_stream_event(rtd,
	148	SNDRV_PCM_STREAM_PLAYBACK,
	149	SND_SOC_DAPM_STREAM_STOP);
8c3d2aa4	150	} else {
9bffb1fb	151	rtd->pop_wait = 1;
3d24cfe4 MB	152	queue_delayed_work(system_power_efficient_wq,
	153	&rtd->delayed_work,
	154	msecs_to_jiffies(rtd->pmdown_time));
8c3d2aa4	155	}
1245b700 NK	156	} else {
	157	/* capture streams can be powered down now */
	158	snd_soc_dapm_stream_event(rtd,
	159	SNDRV_PCM_STREAM_CAPTURE,
	160	SND_SOC_DAPM_STREAM_STOP);
	161	}
	162
15e2e619	163	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	164	return 0;
	165	}
	166
	167	static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
	168	{
	169
	170	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	171	struct snd_soc_platform *platform = rtd->platform;
	172	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	173	int ret = 0;
	174
15e2e619 CK	175	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	176
1245b700 NK	177	if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
	178	ret = platform->driver->compr_ops->trigger(cstream, cmd);
	179	if (ret < 0)
15e2e619	180	goto out;
1245b700 NK	181	}
1245b700 NK	182
da18396f MB	183	switch (cmd) {
	184	case SNDRV_PCM_TRIGGER_START:
	185	snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
	186	break;
	187	case SNDRV_PCM_TRIGGER_STOP:
	188	snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
	189	break;
e38b9b74	190	}
1245b700	191
15e2e619 CK	192	out:
15e2e619 CK	193	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	194	return ret;
	195	}
	196
	197	static int soc_compr_set_params(struct snd_compr_stream *cstream,
	198	struct snd_compr_params *params)
	199	{
	200	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	201	struct snd_soc_platform *platform = rtd->platform;
1245b700 NK	202	int ret = 0;
1245b700 NK	203
15e2e619 CK	204	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	205
1245b700 NK	206	/* first we call set_params for the platform driver
	207	* this should configure the soc side
	208	* if the machine has compressed ops then we call that as well
	209	* expectation is that platform and machine will configure everything
	210	* for this compress path, like configuring pcm port for codec
	211	*/
	212	if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
	213	ret = platform->driver->compr_ops->set_params(cstream, params);
	214	if (ret < 0)
fa40ef20	215	goto err;
1245b700 NK	216	}
	217
	218	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
	219	ret = rtd->dai_link->compr_ops->set_params(cstream);
	220	if (ret < 0)
fa40ef20	221	goto err;
1245b700 NK	222	}
1245b700 NK	223
2c071ed7 CK	224	if (cstream->direction == SND_COMPRESS_PLAYBACK)
	225	snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
	226	SND_SOC_DAPM_STREAM_START);
	227	else
	228	snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
	229	SND_SOC_DAPM_STREAM_START);
1245b700	230
fa40ef20 CK	231	/* cancel any delayed stream shutdown that is pending */
	232	rtd->pop_wait = 0;
	233	mutex_unlock(&rtd->pcm_mutex);
	234
	235	cancel_delayed_work_sync(&rtd->delayed_work);
	236
	237	return ret;
	238
	239	err:
15e2e619	240	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	241	return ret;
	242	}
	243
	244	static int soc_compr_get_params(struct snd_compr_stream *cstream,
	245	struct snd_codec *params)
	246	{
	247	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	248	struct snd_soc_platform *platform = rtd->platform;
	249	int ret = 0;
	250
15e2e619 CK	251	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	252
1245b700 NK	253	if (platform->driver->compr_ops && platform->driver->compr_ops->get_params)
	254	ret = platform->driver->compr_ops->get_params(cstream, params);
	255
15e2e619	256	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	257	return ret;
	258	}
	259
	260	static int soc_compr_get_caps(struct snd_compr_stream *cstream,
	261	struct snd_compr_caps *caps)
	262	{
	263	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	264	struct snd_soc_platform *platform = rtd->platform;
	265	int ret = 0;
	266
15e2e619 CK	267	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	268
1245b700 NK	269	if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps)
	270	ret = platform->driver->compr_ops->get_caps(cstream, caps);
	271
15e2e619	272	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	273	return ret;
	274	}
	275
	276	static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
	277	struct snd_compr_codec_caps *codec)
	278	{
	279	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	280	struct snd_soc_platform *platform = rtd->platform;
	281	int ret = 0;
	282
15e2e619 CK	283	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	284
1245b700 NK	285	if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps)
	286	ret = platform->driver->compr_ops->get_codec_caps(cstream, codec);
	287
15e2e619	288	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	289	return ret;
	290	}
	291
	292	static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
	293	{
	294	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	295	struct snd_soc_platform *platform = rtd->platform;
	296	int ret = 0;
	297
15e2e619 CK	298	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	299
1245b700 NK	300	if (platform->driver->compr_ops && platform->driver->compr_ops->ack)
	301	ret = platform->driver->compr_ops->ack(cstream, bytes);
	302
15e2e619	303	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	304	return ret;
	305	}
	306
	307	static int soc_compr_pointer(struct snd_compr_stream *cstream,
	308	struct snd_compr_tstamp *tstamp)
	309	{
	310	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	311	struct snd_soc_platform *platform = rtd->platform;
	312
15e2e619 CK	313	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
15e2e619 CK	314
1245b700 NK	315	if (platform->driver->compr_ops && platform->driver->compr_ops->pointer)
	316	platform->driver->compr_ops->pointer(cstream, tstamp);
	317
15e2e619	318	mutex_unlock(&rtd->pcm_mutex);
1245b700 NK	319	return 0;
	320	}
	321
1f88eb0f	322	static int soc_compr_copy(struct snd_compr_stream *cstream,
4daf891c	323	char __user *buf, size_t count)
1f88eb0f CK	324	{
	325	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	326	struct snd_soc_platform *platform = rtd->platform;
	327	int ret = 0;
	328
	329	mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
	330
	331	if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
	332	ret = platform->driver->compr_ops->copy(cstream, buf, count);
	333
	334	mutex_unlock(&rtd->pcm_mutex);
	335	return ret;
	336	}
	337
02bd90e8	338	static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
36953d98 JK	339	struct snd_compr_metadata *metadata)
	340	{
	341	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	342	struct snd_soc_platform *platform = rtd->platform;
	343	int ret = 0;
	344
	345	if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata)
	346	ret = platform->driver->compr_ops->set_metadata(cstream, metadata);
	347
	348	return ret;
	349	}
	350
02bd90e8	351	static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
36953d98 JK	352	struct snd_compr_metadata *metadata)
	353	{
	354	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	355	struct snd_soc_platform *platform = rtd->platform;
	356	int ret = 0;
	357
	358	if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata)
	359	ret = platform->driver->compr_ops->get_metadata(cstream, metadata);
	360
	361	return ret;
	362	}
1245b700 NK	363	/* ASoC Compress operations */
	364	static struct snd_compr_ops soc_compr_ops = {
	365	.open = soc_compr_open,
	366	.free = soc_compr_free,
	367	.set_params = soc_compr_set_params,
02bd90e8 VK	368	.set_metadata = soc_compr_set_metadata,
02bd90e8 VK	369	.get_metadata = soc_compr_get_metadata,
1245b700 NK	370	.get_params = soc_compr_get_params,
	371	.trigger = soc_compr_trigger,
	372	.pointer = soc_compr_pointer,
	373	.ack = soc_compr_ack,
	374	.get_caps = soc_compr_get_caps,
	375	.get_codec_caps = soc_compr_get_codec_caps
	376	};
	377
	378	/* create a new compress */
	379	int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
	380	{
	381	struct snd_soc_codec *codec = rtd->codec;
1f88eb0f	382	struct snd_soc_platform *platform = rtd->platform;
1245b700 NK	383	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	384	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	385	struct snd_compr *compr;
	386	char new_name[64];
	387	int ret = 0, direction = 0;
	388
	389	/* check client and interface hw capabilities */
	390	snprintf(new_name, sizeof(new_name), "%s %s-%d",
	391	rtd->dai_link->stream_name, codec_dai->name, num);
daa2db59 CK	392
	393	if (codec_dai->driver->playback.channels_min)
	394	direction = SND_COMPRESS_PLAYBACK;
	395	else if (codec_dai->driver->capture.channels_min)
	396	direction = SND_COMPRESS_CAPTURE;
	397	else
	398	return -EINVAL;
	399
1245b700 NK	400	compr = kzalloc(sizeof(*compr), GFP_KERNEL);
	401	if (compr == NULL) {
	402	snd_printk(KERN_ERR "Cannot allocate compr\n");
	403	return -ENOMEM;
	404	}
	405
1f88eb0f CK	406	compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
	407	GFP_KERNEL);
	408	if (compr->ops == NULL) {
	409	dev_err(rtd->card->dev, "Cannot allocate compressed ops\n");
	410	ret = -ENOMEM;
	411	goto compr_err;
	412	}
	413	memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
	414
	415	/* Add copy callback for not memory mapped DSPs */
	416	if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
	417	compr->ops->copy = soc_compr_copy;
	418
1245b700 NK	419	mutex_init(&compr->lock);
	420	ret = snd_compress_new(rtd->card->snd_card, num, direction, compr);
	421	if (ret < 0) {
	422	pr_err("compress asoc: can't create compress for codec %s\n",
	423	codec->name);
1f88eb0f	424	goto compr_err;
1245b700 NK	425	}
1245b700 NK	426
202c8f70 CK	427	/* DAPM dai link stream work */
	428	INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
	429
1245b700 NK	430	rtd->compr = compr;
	431	compr->private_data = rtd;
	432
	433	printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name,
	434	cpu_dai->name);
	435	return ret;
1f88eb0f CK	436
	437	compr_err:
	438	kfree(compr);
	439	return ret;
1245b700	440	}