Release 4.18 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>
#include <sound/soc-dpcm.h>



static int soc_compr_components_open(struct snd_compr_stream *cstream,
				     struct snd_soc_component **last)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	int ret;

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->open)
			continue;

		ret = component->driver->compr_ops->open(cstream);
		if (ret < 0) {
			dev_err(component->dev,
				"Compress ASoC: can't open platform %s: %d\n",
				component->name, ret);

			*last = component;
			return ret;
		}
	}

	*last = NULL;
	return 0;
}

Contributors
Person
Tokens
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CommitProp
Charles Keepax
52
41.94%
2
40.00%
Vinod Koul
39
31.45%
1
20.00%
Namarta Kohli
24
19.35%
1
20.00%
Kuninori Morimoto
9
7.26%
1
20.00%
Total
124
100.00%
5
100.00%



static int soc_compr_components_free(struct snd_compr_stream *cstream,
				     struct snd_soc_component *last)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_component *component;
	struct snd_soc_rtdcom_list *rtdcom;

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (component == last)
			break;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->free)
			continue;

		component->driver->compr_ops->free(cstream);
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Charles Keepax
52
58.43%
1
50.00%
Kuninori Morimoto
37
41.57%
1
50.00%
Total
89
100.00%
2
100.00%



static int soc_compr_open(struct snd_compr_stream *cstream)
{
	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_component *component;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret;

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

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
		ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
		if (ret < 0) {
			dev_err(cpu_dai->dev,
				"Compress ASoC: can't open interface %s: %d\n",
				cpu_dai->name, ret);
			goto out;
		}
	}

	ret = soc_compr_components_open(cstream, &component);
	if (ret < 0)
		goto machine_err;

	if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
		ret = rtd->dai_link->compr_ops->startup(cstream);
		if (ret < 0) {
			dev_err(rtd->dev,
				"Compress ASoC: %s startup failed: %d\n",
				rtd->dai_link->name, ret);
			goto machine_err;
		}
	}

	snd_soc_runtime_activate(rtd, cstream->direction);

	mutex_unlock(&rtd->pcm_mutex);

	return 0;

machine_err:
	soc_compr_components_free(cstream, component);

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
		cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
out:
	mutex_unlock(&rtd->pcm_mutex);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Charles Keepax
135
52.53%
4
50.00%
Namarta Kohli
68
26.46%
1
12.50%
Vinod Koul
27
10.51%
1
12.50%
Kuninori Morimoto
22
8.56%
1
12.50%
Lars-Peter Clausen
5
1.95%
1
12.50%
Total
257
100.00%
8
100.00%



static int soc_compr_open_fe(struct snd_compr_stream *cstream)
{
	struct snd_soc_pcm_runtime *fe = cstream->private_data;
	struct snd_pcm_substream *fe_substream =
		 fe->pcm->streams[cstream->direction].substream;
	struct snd_soc_component *component;
	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
	struct snd_soc_dpcm *dpcm;
	struct snd_soc_dapm_widget_list *list;
	int stream;
	int ret;

	if (cstream->direction == SND_COMPRESS_PLAYBACK)
		stream = SNDRV_PCM_STREAM_PLAYBACK;
	else
		stream = SNDRV_PCM_STREAM_CAPTURE;

	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
		ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
		if (ret < 0) {
			dev_err(cpu_dai->dev,
				"Compress ASoC: can't open interface %s: %d\n",
				cpu_dai->name, ret);
			goto out;
		}
	}

	ret = soc_compr_components_open(cstream, &component);
	if (ret < 0)
		goto machine_err;

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

	fe->dpcm[stream].runtime = fe_substream->runtime;

	ret = dpcm_path_get(fe, stream, &list);
	if (ret < 0)
		goto fe_err;
	else if (ret == 0)
		dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n",
			fe->dai_link->name, stream ? "capture" : "playback");

	/* calculate valid and active FE <-> BE dpcms */
	dpcm_process_paths(fe, stream, &list, 1);

	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;

	ret = dpcm_be_dai_startup(fe, stream);
	if (ret < 0) {
		/* clean up all links */
		list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
			dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;

		dpcm_be_disconnect(fe, stream);
		fe->dpcm[stream].runtime = NULL;
		goto path_err;
	}

	dpcm_clear_pending_state(fe, stream);
	dpcm_path_put(&list);

	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;

	snd_soc_runtime_activate(fe, stream);

	mutex_unlock(&fe->card->mutex);

	return 0;

path_err:
	dpcm_path_put(&list);
fe_err:
	if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
		fe->dai_link->compr_ops->shutdown(cstream);
machine_err:
	soc_compr_components_free(cstream, component);

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
		cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
out:
	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
	mutex_unlock(&fe->card->mutex);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
324
61.71%
1
8.33%
Vinod Koul
93
17.71%
1
8.33%
Charles Keepax
38
7.24%
5
41.67%
Kuninori Morimoto
24
4.57%
1
8.33%
Namarta Kohli
21
4.00%
1
8.33%
Qiao Zhou
17
3.24%
1
8.33%
Lars-Peter Clausen
5
0.95%
1
8.33%
Satish Babu Patakokila
3
0.57%
1
8.33%
Total
525
100.00%
12
100.00%

/*
 * 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,
		"Compress 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
115
99.14%
1
50.00%
Charles Keepax
1
0.86%
1
50.00%
Total
116
100.00%
2
100.00%



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

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

	if (cstream->direction == SND_COMPRESS_PLAYBACK)
		stream = SNDRV_PCM_STREAM_PLAYBACK;
	else
		stream = SNDRV_PCM_STREAM_CAPTURE;

	snd_soc_runtime_deactivate(rtd, stream);

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

	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);

	soc_compr_components_free(cstream, NULL);

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
		cpu_dai->driver->cops->shutdown(cstream, cpu_dai);

	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
			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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
202
79.22%
1
16.67%
Vinod Koul
29
11.37%
1
16.67%
Lars-Peter Clausen
17
6.67%
2
33.33%
Kuninori Morimoto
4
1.57%
1
16.67%
Charles Keepax
3
1.18%
1
16.67%
Total
255
100.00%
6
100.00%



static int soc_compr_free_fe(struct snd_compr_stream *cstream)
{
	struct snd_soc_pcm_runtime *fe = cstream->private_data;
	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
	struct snd_soc_dpcm *dpcm;
	int stream, ret;

	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);

	if (cstream->direction == SND_COMPRESS_PLAYBACK)
		stream = SNDRV_PCM_STREAM_PLAYBACK;
	else
		stream = SNDRV_PCM_STREAM_CAPTURE;

	snd_soc_runtime_deactivate(fe, stream);

	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;

	ret = dpcm_be_dai_hw_free(fe, stream);
	if (ret < 0)
		dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);

	ret = dpcm_be_dai_shutdown(fe, stream);

	/* mark FE's links ready to prune */
	list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
		dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;

	dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);

	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;

	dpcm_be_disconnect(fe, stream);

	fe->dpcm[stream].runtime = NULL;

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

	soc_compr_components_free(cstream, NULL);

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
		cpu_dai->driver->cops->shutdown(cstream, cpu_dai);

	mutex_unlock(&fe->card->mutex);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
205
78.54%
1
14.29%
Vinod Koul
38
14.56%
1
14.29%
Lars-Peter Clausen
5
1.92%
1
14.29%
Namarta Kohli
5
1.92%
1
14.29%
Kuninori Morimoto
4
1.53%
1
14.29%
Charles Keepax
4
1.53%
2
28.57%
Total
261
100.00%
7
100.00%



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

	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
	struct snd_soc_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0, __ret;

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

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->trigger)
			continue;

		__ret = component->driver->compr_ops->trigger(cstream, cmd);
		if (__ret < 0)
			ret = __ret;
	}
	if (ret < 0)
		goto out;

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
		cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);

	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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
93
42.86%
1
25.00%
Kuninori Morimoto
79
36.41%
1
25.00%
Vinod Koul
41
18.89%
1
25.00%
Namarta Kohli
4
1.84%
1
25.00%
Total
217
100.00%
4
100.00%



static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
{
	struct snd_soc_pcm_runtime *fe = cstream->private_data;
	struct snd_soc_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
	int ret = 0, __ret, stream;

	if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
		cmd == SND_COMPR_TRIGGER_DRAIN) {

		for_each_rtdcom(fe, rtdcom) {
			component = rtdcom->component;

			if (!component->driver->compr_ops ||
			    !component->driver->compr_ops->trigger)
				continue;

			__ret = component->driver->compr_ops->trigger(cstream, cmd);
			if (__ret < 0)
				ret = __ret;
		}
		return ret;
	}

	if (cstream->direction == SND_COMPRESS_PLAYBACK)
		stream = SNDRV_PCM_STREAM_PLAYBACK;
	else
		stream = SNDRV_PCM_STREAM_CAPTURE;

	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);

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

	for_each_rtdcom(fe, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->trigger)
			continue;

		__ret = component->driver->compr_ops->trigger(cstream, cmd);
		if (__ret < 0)
			ret = __ret;
	}
	if (ret < 0)
		goto out;

	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;

	ret = dpcm_be_dai_trigger(fe, stream, cmd);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
		break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
		break;
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
		break;
	}

out:
	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
	mutex_unlock(&fe->card->mutex);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
152
40.86%
1
16.67%
Kuninori Morimoto
149
40.05%
1
16.67%
Vinod Koul
50
13.44%
1
16.67%
Namarta Kohli
14
3.76%
1
16.67%
Charles Keepax
6
1.61%
1
16.67%
Mark Brown
1
0.27%
1
16.67%
Total
372
100.00%
6
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0, __ret;

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

	/*
         * First we call set_params for the CPU DAI, then the component
         * driver this should configure the SoC side. If the machine has
         * compressed ops then we call that as well. The expectation is
         * that these callbacks will configure everything for this compress
         * path, like configuring a PCM port for a CODEC.
         */
	if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
		ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
		if (ret < 0)
			goto err;
	}

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->set_params)
			continue;

		__ret = component->driver->compr_ops->set_params(cstream, params);
		if (__ret < 0)
			ret = __ret;
	}
	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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
83
29.54%
1
12.50%
Kuninori Morimoto
79
28.11%
1
12.50%
Vinod Koul
50
17.79%
1
12.50%
Namarta Kohli
40
14.23%
1
12.50%
Charles Keepax
22
7.83%
2
25.00%
Mark Brown
7
2.49%
2
25.00%
Total
281
100.00%
8
100.00%



static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
				   struct snd_compr_params *params)
{
	struct snd_soc_pcm_runtime *fe = cstream->private_data;
	struct snd_pcm_substream *fe_substream =
		 fe->pcm->streams[cstream->direction].substream;
	struct snd_soc_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
	int ret = 0, __ret, stream;

	if (cstream->direction == SND_COMPRESS_PLAYBACK)
		stream = SNDRV_PCM_STREAM_PLAYBACK;
	else
		stream = SNDRV_PCM_STREAM_CAPTURE;

	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
		ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
		if (ret < 0)
			goto out;
	}

	for_each_rtdcom(fe, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->set_params)
			continue;

		__ret = component->driver->compr_ops->set_params(cstream, params);
		if (__ret < 0)
			ret = __ret;
	}
	if (ret < 0)
		goto out;

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

	/*
         * Create an empty hw_params for the BE as the machine driver must
         * fix this up to match DSP decoder and ASRC configuration.
         * I.e. machine driver fixup for compressed BE is mandatory.
         */
	memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
		sizeof(struct snd_pcm_hw_params));

	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;

	ret = dpcm_be_dai_hw_params(fe, stream);
	if (ret < 0)
		goto out;

	ret = dpcm_be_dai_prepare(fe, stream);
	if (ret < 0)
		goto out;

	dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;

out:
	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
	mutex_unlock(&fe->card->mutex);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
145
39.40%
1
12.50%
Kuninori Morimoto
90
24.46%
1
12.50%
Namarta Kohli
54
14.67%
1
12.50%
Vinod Koul
50
13.59%
1
12.50%
Charles Keepax
26
7.07%
3
37.50%
Satish Babu Patakokila
3
0.82%
1
12.50%
Total
368
100.00%
8
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0, __ret;

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

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) {
		ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai);
		if (ret < 0)
			goto err;
	}

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->get_params)
			continue;

		__ret = component->driver->compr_ops->get_params(cstream, params);
		if (__ret < 0)
			ret = __ret;
	}

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
58
32.58%
1
25.00%
Vinod Koul
52
29.21%
1
25.00%
Namarta Kohli
48
26.97%
1
25.00%
Charles Keepax
20
11.24%
1
25.00%
Total
178
100.00%
4
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	int ret = 0, __ret;

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

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->get_caps)
			continue;

		__ret = component->driver->compr_ops->get_caps(cstream, caps);
		if (__ret < 0)
			ret = __ret;
	}

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
57
46.34%
1
33.33%
Namarta Kohli
46
37.40%
1
33.33%
Charles Keepax
20
16.26%
1
33.33%
Total
123
100.00%
3
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	int ret = 0, __ret;

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

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->get_codec_caps)
			continue;

		__ret = component->driver->compr_ops->get_codec_caps(cstream, codec);
		if (__ret < 0)
			ret = __ret;
	}

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
78
63.41%
1
33.33%
Namarta Kohli
30
24.39%
1
33.33%
Charles Keepax
15
12.20%
1
33.33%
Total
123
100.00%
3
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0, __ret;

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

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) {
		ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai);
		if (ret < 0)
			goto err;
	}

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->ack)
			continue;

		__ret = component->driver->compr_ops->ack(cstream, bytes);
		if (__ret < 0)
			ret = __ret;
	}

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
70
39.77%
1
25.00%
Vinod Koul
52
29.55%
1
25.00%
Namarta Kohli
34
19.32%
1
25.00%
Charles Keepax
20
11.36%
1
25.00%
Total
176
100.00%
4
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	int ret = 0, __ret;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

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

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
		cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->pointer)
			continue;

		__ret = component->driver->compr_ops->pointer(cstream, tstamp);
		if (__ret < 0)
			ret = __ret;
	}

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
69
42.33%
1
16.67%
Namarta Kohli
49
30.06%
1
16.67%
Charles Keepax
31
19.02%
3
50.00%
Vinod Koul
14
8.59%
1
16.67%
Total
163
100.00%
6
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	int ret = 0;

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

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->copy)
			continue;

		ret = component->driver->compr_ops->copy(cstream, buf, count);
		break;
	}

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Charles Keepax
85
72.65%
2
66.67%
Kuninori Morimoto
32
27.35%
1
33.33%
Total
117
100.00%
3
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0, __ret;

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) {
		ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai);
		if (ret < 0)
			return ret;
	}

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->set_metadata)
			continue;

		__ret = component->driver->compr_ops->set_metadata(cstream, metadata);
		if (__ret < 0)
			ret = __ret;
	}

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
58
37.18%
1
25.00%
Vinod Koul
51
32.69%
2
50.00%
Jeeja KP
47
30.13%
1
25.00%
Total
156
100.00%
4
100.00%



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_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0, __ret;

	if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) {
		ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai);
		if (ret < 0)
			return ret;
	}

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->get_metadata)
			continue;

		__ret = component->driver->compr_ops->get_metadata(cstream, metadata);
		if (__ret < 0)
			ret = __ret;
	}

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Kuninori Morimoto
58
37.18%
1
25.00%
Vinod Koul
51
32.69%
2
50.00%
Jeeja KP
47
30.13%
1
25.00%
Total
156
100.00%
4
100.00%

/* 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
};

/* ASoC Dynamic Compress operations */

static struct snd_compr_ops soc_compr_dyn_ops = {
	.open		= soc_compr_open_fe,
	.free		= soc_compr_free_fe,
	.set_params	= soc_compr_set_params_fe,
	.get_params	= soc_compr_get_params,
	.set_metadata   = soc_compr_set_metadata,
	.get_metadata	= soc_compr_get_metadata,
	.trigger	= soc_compr_trigger_fe,
	.pointer	= soc_compr_pointer,
	.ack		= soc_compr_ack,
	.get_caps	= soc_compr_get_caps,
	.get_codec_caps = soc_compr_get_codec_caps
};

/**
 * snd_soc_new_compress - create a new compress.
 *
 * @rtd: The runtime for which we will create compress
 * @num: the device index number (zero based - shared with normal PCMs)
 *
 * Return: 0 for success, else error.
 */


int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
{
	struct snd_soc_component *component;
	struct snd_soc_rtdcom_list *rtdcom;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_compr *compr;
	struct snd_pcm *be_pcm;
	char new_name[64];
	int ret = 0, direction = 0;
	int playback = 0, capture = 0;

	if (rtd->num_codecs > 1) {
		dev_err(rtd->card->dev,
			"Compress ASoC: Multicodec not supported\n");
		return -EINVAL;
	}

	/* check client and interface hw capabilities */
	if (codec_dai->driver->playback.channels_min)
		playback = 1;
	if (codec_dai->driver->capture.channels_min)
		capture = 1;

	capture = capture && cpu_dai->driver->capture.channels_min;
	playback = playback && cpu_dai->driver->playback.channels_min;

	/*
         * Compress devices are unidirectional so only one of the directions
         * should be set, check for that (xor)
         */
	if (playback + capture != 1) {
		dev_err(rtd->card->dev,
			"Compress ASoC: Invalid direction for P %d, C %d\n",
			playback, capture);
		return -EINVAL;
	}

	if (playback)
		direction = SND_COMPRESS_PLAYBACK;
	else
		direction = SND_COMPRESS_CAPTURE;

	compr = kzalloc(sizeof(*compr), GFP_KERNEL);
	if (!compr)
		return -ENOMEM;

	compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
				  GFP_KERNEL);
	if (!compr->ops) {
		ret = -ENOMEM;
		goto compr_err;
	}

	if (rtd->dai_link->dynamic) {
		snprintf(new_name, sizeof(new_name), "(%s)",
			rtd->dai_link->stream_name);

		ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
				rtd->dai_link->dpcm_playback,
				rtd->dai_link->dpcm_capture, &be_pcm);
		if (ret < 0) {
			dev_err(rtd->card->dev,
				"Compress ASoC: can't create compressed for %s: %d\n",
				rtd->dai_link->name, ret);
			goto compr_err;
		}

		rtd->pcm = be_pcm;
		rtd->fe_compr = 1;
		if (rtd->dai_link->dpcm_playback)
			be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
		else if (rtd->dai_link->dpcm_capture)
			be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
		memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
	} else {
		snprintf(new_name, sizeof(new_name), "%s %s-%d",
			rtd->dai_link->stream_name, codec_dai->name, num);

		memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
	}

	for_each_rtdcom(rtd, rtdcom) {
		component = rtdcom->component;

		if (!component->driver->compr_ops ||
		    !component->driver->compr_ops->copy)
			continue;

		compr->ops->copy = soc_compr_copy;
		break;
	}

	mutex_init(&compr->lock);
	ret = snd_compress_new(rtd->card->snd_card, num, direction,
				new_name, compr);
	if (ret < 0) {
		component = rtd->codec_dai->component;
		dev_err(component->dev,
			"Compress ASoC: can't create compress for codec %s: %d\n",
			component->name, ret);
		goto compr_err;
	}

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

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

	dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
		 codec_dai->name, cpu_dai->name);
	return ret;

compr_err:
	kfree(compr);
	return ret;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Namarta Kohli
145
23.65%
1
5.88%
Liam Girdwood
134
21.86%
1
5.88%
Charles Keepax
130
21.21%
5
29.41%
Vinod Koul
75
12.23%
1
5.88%
Kuninori Morimoto
46
7.50%
2
11.76%
Qais Yousef
27
4.40%
1
5.88%
Donglin Peng
26
4.24%
1
5.88%
Benoît Cousson
24
3.92%
1
5.88%
SF Markus Elfring
2
0.33%
1
5.88%
Richard Fitzgerald
2
0.33%
1
5.88%
Jie Yang
1
0.16%
1
5.88%
Lars-Peter Clausen
1
0.16%
1
5.88%
Total
613
100.00%
17
100.00%

EXPORT_SYMBOL_GPL(snd_soc_new_compress);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Liam Girdwood
1520
31.42%
1
2.78%
Kuninori Morimoto
1023
21.15%
2
5.56%
Vinod Koul
714
14.76%
3
8.33%
Namarta Kohli
666
13.77%
1
2.78%
Charles Keepax
660
13.64%
14
38.89%
Jeeja KP
102
2.11%
1
2.78%
Lars-Peter Clausen
33
0.68%
3
8.33%
Qais Yousef
27
0.56%
1
2.78%
Donglin Peng
26
0.54%
1
2.78%
Benoît Cousson
24
0.50%
1
2.78%
Qiao Zhou
17
0.35%
1
2.78%
Mark Brown
8
0.17%
3
8.33%
Jie Yang
7
0.14%
1
2.78%
Satish Babu Patakokila
6
0.12%
1
2.78%
SF Markus Elfring
2
0.04%
1
2.78%
Richard Fitzgerald
2
0.04%
1
2.78%
Total
4837
100.00%
36
100.00%
Directory: sound/soc

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