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gerrit-public.fairphone.software / kernel / msm / e0e4c094369c49d2ceffc4a4672578d93a877ddd / . / sound / soc / soc-pcm.c
blob: 7c6f0eab20abca9c6037368406c6cc8876c2a161 [file] [log] [blame]
/*
* soc-pcm.c -- ALSA SoC PCM
*
* Copyright 2005 Wolfson Microelectronics PLC.
* Copyright 2005 Openedhand Ltd.
* Copyright (C) 2010 Slimlogic Ltd.
* Copyright (C) 2010 Texas Instruments Inc.
*
* Authors: Liam Girdwood <lrg@ti.com>
* Mark Brown <broonie@opensource.wolfsonmicro.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/pm_runtime.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/debugfs.h>
#include <linux/dma-mapping.h>
#include <linux/export.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dpcm.h>
#include <sound/initval.h>
#define MAX_BE_USERS 8 /* adjust if too low for everday use */
/* ASoC no host IO hardware.
* TODO: fine tune these values for all host less transfers.
*/
static const struct snd_pcm_hardware no_host_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S32_LE,
.period_bytes_min = PAGE_SIZE >> 2,
.period_bytes_max = PAGE_SIZE >> 1,
.periods_min = 2,
.periods_max = 4,
.buffer_bytes_max = PAGE_SIZE,
};
/*
* We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
* are not running, paused or suspended for the specified stream direction.
*/
int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
struct snd_soc_pcm_runtime *be, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
list_for_each_entry(dpcm_params, &be->dpcm[stream].fe_clients, list_fe) {
if (dpcm_params->fe == fe)
continue;
if (dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_START ||
dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PAUSED ||
dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_SUSPEND)
return 0;
}
return 1;
}
EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
/*
* We can only change hw params a BE DAI if any of it's FE are not prepared,
* running, paused or suspended for the specified stream direction.
*/
static int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
struct snd_soc_pcm_runtime *be, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
list_for_each_entry(dpcm_params, &be->dpcm[stream].fe_clients, list_fe) {
if (dpcm_params->fe == fe)
continue;
if (dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_START ||
dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PAUSED ||
dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_SUSPEND ||
dpcm_params->fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE)
return 0;
}
return 1;
}
static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
struct snd_soc_dai *soc_dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
int ret;
if (!soc_dai->driver->symmetric_rates &&
!rtd->dai_link->symmetric_rates)
return 0;
/* This can happen if multiple streams are starting simultaneously -
* the second can need to get its constraints before the first has
* picked a rate. Complain and allow the application to carry on.
*/
if (!soc_dai->rate) {
dev_warn(soc_dai->dev,
"Not enforcing symmetric_rates due to race\n");
return 0;
}
dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate);
ret = snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE,
soc_dai->rate, soc_dai->rate);
if (ret < 0) {
dev_err(soc_dai->dev,
"Unable to apply rate symmetry constraint: %d\n", ret);
return ret;
}
return 0;
}
/*
* List of sample sizes that might go over the bus for parameter
* application. There ought to be a wildcard sample size for things
* like the DAC/ADC resolution to use but there isn't right now.
*/
static int sample_sizes[] = {
8, 16, 24, 32,
};
static void soc_pcm_apply_msb(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret, i, bits;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
bits = dai->driver->playback.sig_bits;
else
bits = dai->driver->capture.sig_bits;
if (!bits)
return;
for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) {
if (bits >= sample_sizes[i])
continue;
ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0,
sample_sizes[i], bits);
if (ret != 0)
dev_warn(dai->dev,
"Failed to set MSB %d/%d: %d\n",
bits, sample_sizes[i], ret);
}
}
/*
* stream event, send event to FE and all active BEs.
*/
int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe,
int dir, const char *stream, int event)
{
struct snd_soc_dpcm_params *dpcm_params;
snd_soc_dapm_rtd_stream_event(fe, dir, event);
list_for_each_entry(dpcm_params, &fe->dpcm[dir].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
dev_dbg(be->dev, "pm: BE %s stream %s event %d dir %d\n",
be->dai_link->name, stream, event, dir);
snd_soc_dapm_rtd_stream_event(be, dir, event);
}
return 0;
}
/*
* Called by ALSA when a PCM substream is opened, the runtime->hw record is
* then initialized and any private data can be allocated. This also calls
* startup for the cpu DAI, platform, machine and codec DAI.
*/
static int soc_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
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_dai_driver *cpu_dai_drv = cpu_dai->driver;
struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
int ret = 0;
pm_runtime_get_sync(cpu_dai->dev);
pm_runtime_get_sync(codec_dai->dev);
pm_runtime_get_sync(platform->dev);
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
if (rtd->dai_link->no_host_mode == SND_SOC_DAI_LINK_NO_HOST)
snd_soc_set_runtime_hwparams(substream, &no_host_hardware);
/* startup the audio subsystem */
if (cpu_dai->driver->ops->startup) {
ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: can't open interface %s\n",
cpu_dai->name);
goto out;
}
}
if (platform->driver->ops && platform->driver->ops->open) {
ret = platform->driver->ops->open(substream);
if (ret < 0) {
printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
goto platform_err;
}
}
if (codec_dai->driver->ops->startup) {
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = codec_dai->driver->ops->startup(substream,
codec_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: can't open codec %s\n",
codec_dai->name);
goto codec_dai_err;
}
} else {
if (!codec_dai->capture_active) {
ret = codec_dai->driver->ops->startup(substream,
codec_dai);
if (ret < 0) {
printk(KERN_ERR "can't open codec %s\n",
codec_dai->name);
goto codec_dai_err;
}
}
}
}
if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
ret = rtd->dai_link->ops->startup(substream);
if (ret < 0) {
printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
goto machine_err;
}
}
/* DSP DAI links compat checks are different */
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm)
goto dynamic;
/* Check that the codec and cpu DAIs are compatible */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
runtime->hw.rate_min =
max(codec_dai_drv->playback.rate_min,
cpu_dai_drv->playback.rate_min);
runtime->hw.rate_max =
min(codec_dai_drv->playback.rate_max,
cpu_dai_drv->playback.rate_max);
runtime->hw.channels_min =
max(codec_dai_drv->playback.channels_min,
cpu_dai_drv->playback.channels_min);
runtime->hw.channels_max =
min(codec_dai_drv->playback.channels_max,
cpu_dai_drv->playback.channels_max);
runtime->hw.formats =
codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
runtime->hw.rates =
codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
if (codec_dai_drv->playback.rates
& (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
runtime->hw.rates |= cpu_dai_drv->playback.rates;
if (cpu_dai_drv->playback.rates
& (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
runtime->hw.rates |= codec_dai_drv->playback.rates;
} else {
runtime->hw.rate_min =
max(codec_dai_drv->capture.rate_min,
cpu_dai_drv->capture.rate_min);
runtime->hw.rate_max =
min(codec_dai_drv->capture.rate_max,
cpu_dai_drv->capture.rate_max);
runtime->hw.channels_min =
max(codec_dai_drv->capture.channels_min,
cpu_dai_drv->capture.channels_min);
runtime->hw.channels_max =
min(codec_dai_drv->capture.channels_max,
cpu_dai_drv->capture.channels_max);
runtime->hw.formats =
codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
runtime->hw.rates =
codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
if (codec_dai_drv->capture.rates
& (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
runtime->hw.rates |= cpu_dai_drv->capture.rates;
if (cpu_dai_drv->capture.rates
& (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
runtime->hw.rates |= codec_dai_drv->capture.rates;
}
ret = -EINVAL;
snd_pcm_limit_hw_rates(runtime);
if (!runtime->hw.rates) {
printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
codec_dai->name, cpu_dai->name);
goto config_err;
}
if (!runtime->hw.formats) {
printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
codec_dai->name, cpu_dai->name);
goto config_err;
}
if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
runtime->hw.channels_min > runtime->hw.channels_max) {
printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
codec_dai->name, cpu_dai->name);
goto config_err;
}
soc_pcm_apply_msb(substream, codec_dai);
soc_pcm_apply_msb(substream, cpu_dai);
/* Symmetry only applies if we've already got an active stream. */
if (cpu_dai->active) {
ret = soc_pcm_apply_symmetry(substream, cpu_dai);
if (ret != 0)
goto config_err;
}
if (codec_dai->active) {
ret = soc_pcm_apply_symmetry(substream, codec_dai);
if (ret != 0)
goto config_err;
}
pr_debug("asoc: %s <-> %s info:\n",
codec_dai->name, cpu_dai->name);
pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
runtime->hw.channels_max);
pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
runtime->hw.rate_max);
dynamic:
if (substream->stream == SNDRV_PCM_STREAM_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;
config_err:
if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
rtd->dai_link->ops->shutdown(substream);
machine_err:
if (codec_dai->driver->ops->shutdown)
codec_dai->driver->ops->shutdown(substream, codec_dai);
codec_dai_err:
if (platform->driver->ops && platform->driver->ops->close)
platform->driver->ops->close(substream);
platform_err:
if (cpu_dai->driver->ops->shutdown)
cpu_dai->driver->ops->shutdown(substream, cpu_dai);
out:
mutex_unlock(&rtd->pcm_mutex);
pm_runtime_put(platform->dev);
pm_runtime_put(codec_dai->dev);
pm_runtime_put(cpu_dai->dev);
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);
pr_debug("pop wq checking: %s status: %s waiting: %s\n",
codec_dai->driver->playback.stream_name,
codec_dai->playback_active ? "active" : "inactive",
codec_dai->pop_wait ? "yes" : "no");
/* are we waiting on this codec DAI stream */
if (codec_dai->pop_wait == 1) {
codec_dai->pop_wait = 0;
snd_soc_dapm_stream_event(rtd,
codec_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_STOP);
}
mutex_unlock(&rtd->pcm_mutex);
}
/*
* Called by ALSA when a PCM substream is closed. Private data can be
* freed here. The cpu DAI, codec DAI, machine and platform are also
* shutdown.
*/
static int soc_pcm_close(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->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 (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
cpu_dai->playback_active--;
codec_dai->playback_active--;
} else {
cpu_dai->capture_active--;
codec_dai->capture_active--;
}
cpu_dai->active--;
codec_dai->active--;
codec->active--;
/* clear the corresponding DAIs rate when inactive */
if (!cpu_dai->active)
cpu_dai->rate = 0;
if (!codec_dai->active)
codec_dai->rate = 0;
/* Muting the DAC suppresses artifacts caused during digital
* shutdown, for example from stopping clocks.
*/
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dai_digital_mute(codec_dai, 1);
if (cpu_dai->driver->ops->shutdown)
cpu_dai->driver->ops->shutdown(substream, cpu_dai);
if (codec_dai->driver->ops->shutdown) {
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
codec_dai->driver->ops->shutdown(substream, codec_dai);
} else {
if (!codec_dai->capture_active)
codec_dai->driver->ops->shutdown(substream,
codec_dai);
}
}
if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
rtd->dai_link->ops->shutdown(substream);
if (platform->driver->ops && platform->driver->ops->close)
platform->driver->ops->close(substream);
cpu_dai->runtime = NULL;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (codec->ignore_pmdown_time ||
rtd->dai_link->ignore_pmdown_time ||
!rtd->pmdown_time) {
/* powered down playback stream now */
snd_soc_dapm_stream_event(rtd,
codec_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_STOP);
} else {
/* start delayed pop wq here for playback streams */
codec_dai->pop_wait = 1;
schedule_delayed_work(&rtd->delayed_work,
msecs_to_jiffies(rtd->pmdown_time));
}
} else {
/* capture streams can be powered down now */
if (!codec_dai->capture_active)
snd_soc_dapm_stream_event(rtd,
codec_dai->driver->capture.stream_name,
SND_SOC_DAPM_STREAM_STOP);
}
mutex_unlock(&rtd->pcm_mutex);
pm_runtime_put(platform->dev);
pm_runtime_put(codec_dai->dev);
pm_runtime_put(cpu_dai->dev);
return 0;
}
/*
* Called by ALSA when the PCM substream is prepared, can set format, sample
* rate, etc. This function is non atomic and can be called multiple times,
* it can refer to the runtime info.
*/
static int soc_pcm_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->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 (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
ret = rtd->dai_link->ops->prepare(substream);
if (ret < 0) {
printk(KERN_ERR "asoc: machine prepare error\n");
goto out;
}
}
if (platform->driver->ops && platform->driver->ops->prepare) {
ret = platform->driver->ops->prepare(substream);
if (ret < 0) {
printk(KERN_ERR "asoc: platform prepare error\n");
goto out;
}
}
if (codec_dai->driver->ops->prepare) {
ret = codec_dai->driver->ops->prepare(substream, codec_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: codec DAI prepare error\n");
goto out;
}
}
if (cpu_dai->driver->ops->prepare) {
ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: cpu DAI prepare error\n");
goto out;
}
}
/* cancel any delayed stream shutdown that is pending */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
codec_dai->pop_wait) {
codec_dai->pop_wait = 0;
cancel_delayed_work(&rtd->delayed_work);
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dapm_stream_event(rtd,
codec_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
else {
if (codec_dai->capture_active == 1)
snd_soc_dapm_stream_event(rtd,
codec_dai->driver->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
}
snd_soc_dai_digital_mute(codec_dai, 0);
out:
mutex_unlock(&rtd->pcm_mutex);
return ret;
}
/*
* Called by ALSA when the hardware params are set by application. This
* function can also be called multiple times and can allocate buffers
* (using snd_pcm_lib_* ). It's non-atomic.
*/
static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->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 (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
ret = rtd->dai_link->ops->hw_params(substream, params);
if (ret < 0) {
printk(KERN_ERR "asoc: machine hw_params failed\n");
goto out;
}
}
if (codec_dai->driver->ops->hw_params) {
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = codec_dai->driver->ops->hw_params(substream,
params, codec_dai);
if (ret < 0) {
printk(KERN_ERR "not set codec %s hw params\n",
codec_dai->name);
goto codec_err;
}
} else {
if (codec_dai->capture_active == 1) {
ret = codec_dai->driver->ops->hw_params(
substream, params, codec_dai);
if (ret < 0) {
printk(KERN_ERR "fail: %s hw params\n",
codec_dai->name);
goto codec_err;
}
}
}
}
if (cpu_dai->driver->ops->hw_params) {
ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: interface %s hw params failed\n",
cpu_dai->name);
goto interface_err;
}
}
if (platform->driver->ops && platform->driver->ops->hw_params) {
ret = platform->driver->ops->hw_params(substream, params);
if (ret < 0) {
printk(KERN_ERR "asoc: platform %s hw params failed\n",
platform->name);
goto platform_err;
}
}
/* store the rate for each DAIs */
cpu_dai->rate = params_rate(params);
codec_dai->rate = params_rate(params);
/* malloc a page for hostless IO.
* FIXME: rework with alsa-lib changes so that this malloc is not required.
*/
if (rtd->dai_link->no_host_mode == SND_SOC_DAI_LINK_NO_HOST) {
substream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV;
substream->dma_buffer.dev.dev = rtd->dev;
substream->dma_buffer.dev.dev->coherent_dma_mask = DMA_BIT_MASK(32);
substream->dma_buffer.private_data = NULL;
ret = snd_pcm_lib_malloc_pages(substream, PAGE_SIZE);
if (ret < 0)
goto platform_err;
}
out:
mutex_unlock(&rtd->pcm_mutex);
return ret;
platform_err:
if (cpu_dai->driver->ops->hw_free)
cpu_dai->driver->ops->hw_free(substream, cpu_dai);
interface_err:
if (codec_dai->driver->ops->hw_free)
codec_dai->driver->ops->hw_free(substream, codec_dai);
codec_err:
if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
rtd->dai_link->ops->hw_free(substream);
mutex_unlock(&rtd->pcm_mutex);
return ret;
}
/*
* Frees resources allocated by hw_params, can be called multiple times
*/
static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->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);
/* apply codec digital mute */
if (!codec->active)
snd_soc_dai_digital_mute(codec_dai, 1);
/* free any machine hw params */
if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
rtd->dai_link->ops->hw_free(substream);
/* free any DMA resources */
if (platform->driver->ops && platform->driver->ops->hw_free)
platform->driver->ops->hw_free(substream);
/* now free hw params for the DAIs */
if (codec_dai->driver->ops->hw_free)
codec_dai->driver->ops->hw_free(substream, codec_dai);
if (cpu_dai->driver->ops->hw_free)
cpu_dai->driver->ops->hw_free(substream, cpu_dai);
if (rtd->dai_link->no_host_mode == SND_SOC_DAI_LINK_NO_HOST)
snd_pcm_lib_free_pages(substream);
mutex_unlock(&rtd->pcm_mutex);
return 0;
}
static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->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;
if (codec_dai->driver->ops->trigger) {
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = codec_dai->driver->ops->trigger(substream,
cmd, codec_dai);
if (ret < 0)
return ret;
} else {
if (codec_dai->capture_active == 1) {
ret = codec_dai->driver->ops->trigger(
substream, cmd, codec_dai);
if (ret < 0)
return ret;
}
}
}
if (platform->driver->ops && platform->driver->ops->trigger) {
ret = platform->driver->ops->trigger(substream, cmd);
if (ret < 0)
return ret;
}
if (cpu_dai->driver->ops->trigger) {
ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
if (ret < 0)
return ret;
}
return 0;
}
int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->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;
if (codec_dai->driver->ops->bespoke_trigger) {
ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai);
if (ret < 0)
return ret;
}
if (platform->driver->bespoke_trigger) {
ret = platform->driver->bespoke_trigger(substream, cmd);
if (ret < 0)
return ret;
}
if (cpu_dai->driver->ops->bespoke_trigger) {
ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai);
if (ret < 0)
return ret;
}
return 0;
}
/*
* soc level wrapper for pointer callback
* If cpu_dai, codec_dai, platform driver has the delay callback, than
* the runtime->delay will be updated accordingly.
*/
static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->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_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t offset = 0;
snd_pcm_sframes_t delay = 0;
if (platform->driver->ops && platform->driver->ops->pointer)
offset = platform->driver->ops->pointer(substream);
if (cpu_dai->driver->ops->delay)
delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
if (codec_dai->driver->ops->delay)
delay += codec_dai->driver->ops->delay(substream, codec_dai);
if (platform->driver->delay)
delay += platform->driver->delay(substream, codec_dai);
runtime->delay = delay;
return offset;
}
static inline int be_connect(struct snd_soc_pcm_runtime *fe,
struct snd_soc_pcm_runtime *be, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
if (!fe->dpcm[stream].runtime && !fe->fe_compr) {
dev_err(fe->dev, "%s no runtime\n", fe->dai_link->name);
return -ENODEV;
}
/* only add new dpcm_paramss */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
if (dpcm_params->be == be && dpcm_params->fe == fe)
return 0;
}
dpcm_params = kzalloc(sizeof(struct snd_soc_dpcm_params), GFP_KERNEL);
if (!dpcm_params)
return -ENOMEM;
dpcm_params->be = be;
dpcm_params->fe = fe;
be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
dpcm_params->state = SND_SOC_DPCM_LINK_STATE_NEW;
list_add(&dpcm_params->list_be, &fe->dpcm[stream].be_clients);
list_add(&dpcm_params->list_fe, &be->dpcm[stream].fe_clients);
dev_dbg(fe->dev, " connected new DSP %s path %s %s %s\n",
stream ? "capture" : "playback", fe->dai_link->name,
stream ? "<-" : "->", be->dai_link->name);
#ifdef CONFIG_DEBUG_FS
dpcm_params->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
fe->debugfs_dpcm_root, &dpcm_params->state);
#endif
return 1;
}
static inline void be_reparent(struct snd_soc_pcm_runtime *fe,
struct snd_soc_pcm_runtime *be, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
struct snd_pcm_substream *fe_substream, *be_substream;
/* reparent if BE is connected to other FEs */
if (!be->dpcm[stream].users)
return;
be_substream = snd_soc_dpcm_get_substream(be, stream);
list_for_each_entry(dpcm_params, &be->dpcm[stream].fe_clients, list_fe) {
if (dpcm_params->fe != fe) {
dev_dbg(fe->dev, " reparent %s path %s %s %s\n",
stream ? "capture" : "playback",
dpcm_params->fe->dai_link->name,
stream ? "<-" : "->", dpcm_params->be->dai_link->name);
fe_substream = snd_soc_dpcm_get_substream(dpcm_params->fe,
stream);
be_substream->runtime = fe_substream->runtime;
break;
}
}
}
void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params, *d;
list_for_each_entry_safe(dpcm_params, d, &fe->dpcm[stream].be_clients, list_be) {
dev_dbg(fe->dev, "BE %s disconnect check for %s\n",
stream ? "capture" : "playback",
dpcm_params->be->dai_link->name);
if (dpcm_params->state == SND_SOC_DPCM_LINK_STATE_FREE) {
dev_dbg(fe->dev, " freed DSP %s path %s %s %s\n",
stream ? "capture" : "playback", fe->dai_link->name,
stream ? "<-" : "->", dpcm_params->be->dai_link->name);
/* BEs still alive need new FE */
be_reparent(fe, dpcm_params->be, stream);
#ifdef CONFIG_DEBUG_FS
debugfs_remove(dpcm_params->debugfs_state);
#endif
list_del(&dpcm_params->list_be);
list_del(&dpcm_params->list_fe);
kfree(dpcm_params);
}
}
}
static struct snd_soc_pcm_runtime *be_get_rtd(struct snd_soc_card *card,
struct snd_soc_dapm_widget *widget)
{
struct snd_soc_pcm_runtime *be;
int i;
if (!widget->sname) {
dev_err(card->dev, "widget %s has no stream\n", widget->name);
return NULL;
}
for (i = 0; i < card->num_links; i++) {
be = &card->rtd[i];
if (!strcmp(widget->sname, be->dai_link->stream_name))
return be;
}
dev_err(card->dev, "can't get BE for %s\n", widget->name);
return NULL;
}
static struct snd_soc_dapm_widget *be_get_widget(struct snd_soc_card *card,
struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dapm_widget *widget;
list_for_each_entry(widget, &card->widgets, list) {
if (!widget->sname)
continue;
if (!strcmp(widget->sname, rtd->dai_link->stream_name))
return widget;
}
dev_err(card->dev, "can't get widget for %s\n",
rtd->dai_link->stream_name);
return NULL;
}
static int widget_in_list(struct snd_soc_dapm_widget_list *list,
struct snd_soc_dapm_widget *widget)
{
int i;
for (i = 0; i < list->num_widgets; i++) {
if (widget == list->widgets[i])
return 1;
}
return 0;
}
int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
int stream, struct snd_soc_dapm_widget_list **list_)
{
struct snd_soc_dai *cpu_dai = fe->cpu_dai;
struct snd_soc_dapm_widget_list *list;
int paths;
list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) +
sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL);
if (list == NULL)
return -ENOMEM;
/* get number of valid DAI paths and their widgets */
paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list);
dev_dbg(fe->dev, "found %d audio %s paths\n", paths,
stream ? "capture" : "playback");
*list_ = list;
return paths;
}
static int be_prune_old(struct snd_soc_pcm_runtime *fe, int stream,
struct snd_soc_dapm_widget_list **list_)
{
struct snd_soc_card *card = fe->card;
struct snd_soc_dpcm_params *dpcm_params;
struct snd_soc_dapm_widget_list *list = *list_;
struct snd_soc_dapm_widget *widget;
int old = 0;
/* Destroy any old FE <--> BE connections */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
/* is there a valid widget for this BE */
widget = be_get_widget(card, dpcm_params->be);
if (!widget) {
dev_err(fe->dev, "no widget found for %s\n",
dpcm_params->be->dai_link->name);
continue;
}
/* prune the BE if it's no longer in our active list */
if (widget_in_list(list, widget))
continue;
dev_dbg(fe->dev, "pruning %s BE %s for %s\n",
stream ? "capture" : "playback", dpcm_params->be->dai_link->name,
fe->dai_link->name);
dpcm_params->state = SND_SOC_DPCM_LINK_STATE_FREE;
dpcm_params->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
old++;
}
dev_dbg(fe->dev, "found %d old BEs\n", old);
return old;
}
static int be_add_new(struct snd_soc_pcm_runtime *fe, int stream,
struct snd_soc_dapm_widget_list **list_)
{
struct snd_soc_card *card = fe->card;
struct snd_soc_dapm_widget_list *list = *list_;
enum snd_soc_dapm_type be_type;
int i, new = 0, err;
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
be_type = snd_soc_dapm_aif_out;
else
be_type = snd_soc_dapm_aif_in;
/* Create any new FE <--> BE connections */
for (i = 0; i < list->num_widgets; i++) {
if (list->widgets[i]->id == be_type) {
struct snd_soc_pcm_runtime *be;
/* is there a valid BE rtd for this widget */
be = be_get_rtd(card, list->widgets[i]);
if (!be) {
dev_err(fe->dev, "no BE found for %s\n",
list->widgets[i]->name);
continue;
}
/* don't connect if FE is not running */
if (!fe->dpcm[stream].runtime && !fe->fe_compr)
continue;
/* newly connected FE and BE */
err = be_connect(fe, be, stream);
if (err < 0) {
dev_err(fe->dev, "can't connect %s\n", list->widgets[i]->name);
break;
} else if (err == 0) /* already connected */
continue;
/* new */
be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
new++;
}
}
dev_dbg(fe->dev, "found %d new BEs\n", new);
return new;
}
/*
* Find the corresponding BE DAIs that source or sink audio to this
* FE substream.
*/
int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
int stream, struct snd_soc_dapm_widget_list **list, int new)
{
if (new)
return be_add_new(fe, stream, list);
else
return be_prune_old(fe, stream, list);
return 0;
}
/*
* Clear the runtime pending state of all BE's.
*/
void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be)
dpcm_params->be->dpcm[stream].runtime_update =
SND_SOC_DPCM_UPDATE_NO;
}
/* Unwind the BE startup */
static void soc_dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
/* disable any enabled and non active backends */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
if (be->dpcm[stream].users == 0)
dev_err(be->dev, "no users %s at close - state %d\n",
stream ? "capture" : "playback", be->dpcm[stream].state);
if (--be->dpcm[stream].users != 0)
continue;
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
continue;
soc_pcm_close(be_substream);
be_substream->runtime = NULL;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
}
}
/* Startup all new BE */
int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
int err, count = 0;
/* only startup BE DAIs that are either sinks or sources to this FE DAI */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
/* is this op for this BE ? */
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
/* first time the dpcm_params is open ? */
if (be->dpcm[stream].users == MAX_BE_USERS)
dev_err(be->dev, "too many users %s at open - state %d\n",
stream ? "capture" : "playback", be->dpcm[stream].state);
if (be->dpcm[stream].users++ != 0)
continue;
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
continue;
dev_dbg(be->dev, "dpcm: open BE %s\n", be->dai_link->name);
be_substream->runtime = be->dpcm[stream].runtime;
err = soc_pcm_open(be_substream);
if (err < 0) {
dev_err(be->dev, "BE open failed %d\n", err);
be->dpcm[stream].users--;
if (be->dpcm[stream].users < 0)
dev_err(be->dev, "no users %s at unwind - state %d\n",
stream ? "capture" : "playback",
be->dpcm[stream].state);
be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
goto unwind;
}
be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
count++;
}
return count;
unwind:
/* disable any enabled and non active backends */
list_for_each_entry_continue_reverse(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
if (be->dpcm[stream].users == 0)
dev_err(be->dev, "no users %s at close - state %d\n",
stream ? "capture" : "playback", be->dpcm[stream].state);
if (--be->dpcm[stream].users != 0)
continue;
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
continue;
soc_pcm_close(be_substream);
be_substream->runtime = NULL;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
}
return err;
}
void soc_dpcm_set_dynamic_runtime(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
runtime->hw.rate_min = cpu_dai_drv->playback.rate_min;
runtime->hw.rate_max = cpu_dai_drv->playback.rate_max;
runtime->hw.channels_min = cpu_dai_drv->playback.channels_min;
runtime->hw.channels_max = cpu_dai_drv->playback.channels_max;
runtime->hw.formats &= cpu_dai_drv->playback.formats;
runtime->hw.rates = cpu_dai_drv->playback.rates;
} else {
runtime->hw.rate_min = cpu_dai_drv->capture.rate_min;
runtime->hw.rate_max = cpu_dai_drv->capture.rate_max;
runtime->hw.channels_min = cpu_dai_drv->capture.channels_min;
runtime->hw.channels_max = cpu_dai_drv->capture.channels_max;
runtime->hw.formats &= cpu_dai_drv->capture.formats;
runtime->hw.rates = cpu_dai_drv->capture.rates;
}
}
static int soc_dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
{
struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
struct snd_pcm_runtime *runtime = fe_substream->runtime;
int stream = fe_substream->stream, ret = 0;
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
ret = dpcm_be_dai_startup(fe, fe_substream->stream);
if (ret < 0) {
dev_err(fe->dev,"dpcm: failed to start some BEs %d\n", ret);
goto be_err;
}
dev_dbg(fe->dev, "dpcm: open FE %s\n", fe->dai_link->name);
/* start the DAI frontend */
ret = soc_pcm_open(fe_substream);
if (ret < 0) {
dev_err(fe->dev,"dpcm: failed to start FE %d\n", ret);
goto unwind;
}
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
soc_dpcm_set_dynamic_runtime(fe_substream);
snd_pcm_limit_hw_rates(runtime);
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
return 0;
unwind:
soc_dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
be_err:
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
return ret;
}
/* BE shutdown - called on DAPM sync updates (i.e. FE is already running)*/
int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
/* only shutdown backends that are either sinks or sources to this frontend DAI */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
/* is this op for this BE ? */
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
if (be->dpcm[stream].users == 0)
dev_err(be->dev, "no users %s at close - state %d\n",
stream ? "capture" : "playback", be->dpcm[stream].state);
if (--be->dpcm[stream].users != 0)
continue;
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN))
continue;
dev_dbg(be->dev, "dpcm: close BE %s\n",
dpcm_params->fe->dai_link->name);
soc_pcm_close(be_substream);
be_substream->runtime = NULL;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
}
return 0;
}
/* FE +BE shutdown - called on FE PCM ops */
static int soc_dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
int stream = substream->stream;
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
dev_dbg(fe->dev, "dpcm: close FE %s\n", fe->dai_link->name);
/* now shutdown the frontend */
soc_pcm_close(substream);
/* shutdown the BEs */
dpcm_be_dai_shutdown(fe, substream->stream);
/* run the stream event for each BE */
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_STOP);
else
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->capture.stream_name,
SND_SOC_DAPM_STREAM_STOP);
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
return 0;
}
int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
int ret;
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
/* is this op for this BE ? */
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
/* only allow hw_params() if no connected FEs are running */
if (!snd_soc_dpcm_can_be_params(fe, be, stream))
continue;
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
continue;
dev_dbg(be->dev, "dpcm: hw_params BE %s\n",
dpcm_params->fe->dai_link->name);
/* copy params for each dpcm_params */
memcpy(&dpcm_params->hw_params, &fe->dpcm[stream].hw_params,
sizeof(struct snd_pcm_hw_params));
/* perform any hw_params fixups */
if (be->dai_link->be_hw_params_fixup) {
ret = be->dai_link->be_hw_params_fixup(be,
&dpcm_params->hw_params);
if (ret < 0) {
dev_err(be->dev,
"dpcm: hw_params BE fixup failed %d\n",
ret);
goto unwind;
}
}
ret = soc_pcm_hw_params(be_substream, &dpcm_params->hw_params);
if (ret < 0) {
dev_err(dpcm_params->be->dev, "dpcm: hw_params BE failed %d\n", ret);
goto unwind;
}
be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
}
return 0;
unwind:
/* disable any enabled and non active backends */
list_for_each_entry_continue_reverse(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
/* only allow hw_free() if no connected FEs are running */
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
continue;
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
continue;
soc_pcm_hw_free(be_substream);
}
return ret;
}
int soc_dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
int ret, stream = substream->stream;
mutex_lock(&fe->card->dpcm_mutex);
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
memcpy(&fe->dpcm[substream->stream].hw_params, params,
sizeof(struct snd_pcm_hw_params));
ret = dpcm_be_dai_hw_params(fe, substream->stream);
if (ret < 0) {
dev_err(fe->dev,"dpcm: hw_params failed for some BEs %d\n", ret);
goto out;
}
dev_dbg(fe->dev, "dpcm: hw_params FE %s rate %d chan %x fmt %d\n",
fe->dai_link->name, params_rate(params), params_channels(params),
params_format(params));
/* call hw_params on the frontend */
ret = soc_pcm_hw_params(substream, params);
if (ret < 0) {
dev_err(fe->dev,"dpcm: hw_params FE failed %d\n", ret);
dpcm_be_dai_hw_free(fe, stream);
} else
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
out:
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
mutex_unlock(&fe->card->dpcm_mutex);
return ret;
}
static int dpcm_do_trigger(struct snd_soc_dpcm_params *dpcm_params,
struct snd_pcm_substream *substream, int cmd)
{
int ret;
dev_dbg(dpcm_params->be->dev, "dpcm: trigger BE %s cmd %d\n",
dpcm_params->fe->dai_link->name, cmd);
ret = soc_pcm_trigger(substream, cmd);
if (ret < 0)
dev_err(dpcm_params->be->dev,"dpcm: trigger BE failed %d\n", ret);
return ret;
}
int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd)
{
struct snd_soc_dpcm_params *dpcm_params;
int ret = 0;
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
/* is this op for this BE ? */
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
continue;
ret = dpcm_do_trigger(dpcm_params, be_substream, cmd);
if (ret)
return ret;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
break;
case SNDRV_PCM_TRIGGER_RESUME:
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
continue;
ret = dpcm_do_trigger(dpcm_params, be_substream, cmd);
if (ret)
return ret;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
continue;
ret = dpcm_do_trigger(dpcm_params, be_substream, cmd);
if (ret)
return ret;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
break;
case SNDRV_PCM_TRIGGER_STOP:
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
continue;
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
continue;
ret = dpcm_do_trigger(dpcm_params, be_substream, cmd);
if (ret)
return ret;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)
continue;
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
continue;
ret = dpcm_do_trigger(dpcm_params, be_substream, cmd);
if (ret)
return ret;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
continue;
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
continue;
ret = dpcm_do_trigger(dpcm_params, be_substream, cmd);
if (ret)
return ret;
be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
break;
}
}
return ret;
}
EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
int soc_dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
int stream = substream->stream, ret;
enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
switch (trigger) {
case SND_SOC_DPCM_TRIGGER_PRE:
/* call trigger on the frontend before the backend. */
dev_dbg(fe->dev, "dpcm: pre trigger FE %s cmd %d\n",
fe->dai_link->name, cmd);
ret = soc_pcm_trigger(substream, cmd);
if (ret < 0) {
dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret);
goto out;
}
ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
break;
case SND_SOC_DPCM_TRIGGER_POST:
/* call trigger on the frontend after the backend. */
ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
if (ret < 0) {
dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret);
goto out;
}
dev_dbg(fe->dev, "dpcm: post trigger FE %s cmd %d\n",
fe->dai_link->name, cmd);
ret = soc_pcm_trigger(substream, cmd);
break;
case SND_SOC_DPCM_TRIGGER_BESPOKE:
/* bespoke trigger() - handles both FE and BEs */
dev_dbg(fe->dev, "dpcm: bespoke trigger FE %s cmd %d\n",
fe->dai_link->name, cmd);
ret = soc_pcm_bespoke_trigger(substream, cmd);
if (ret < 0) {
dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret);
goto out;
}
break;
default:
dev_err(fe->dev, "dpcm: invalid trigger cmd %d for %s\n", cmd,
fe->dai_link->name);
ret = -EINVAL;
goto out;
}
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;
return ret;
}
int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
int ret = 0;
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
/* is this op for this BE ? */
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
continue;
dev_dbg(be->dev, "dpcm: prepare BE %s\n",
dpcm_params->fe->dai_link->name);
ret = soc_pcm_prepare(be_substream);
if (ret < 0) {
dev_err(be->dev, "dpcm: backend prepare failed %d\n",
ret);
break;
}
be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
}
return ret;
}
int soc_dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
int stream = substream->stream, ret = 0;
mutex_lock(&fe->card->dpcm_mutex);
dev_dbg(fe->dev, "dpcm: prepare FE %s\n", fe->dai_link->name);
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
/* there is no point preparing this FE if there are no BEs */
if (list_empty(&fe->dpcm[stream].be_clients)) {
dev_err(fe->dev, "dpcm: no backend DAIs enabled for %s\n",
fe->dai_link->name);
ret = -EINVAL;
goto out;
}
ret = dpcm_be_dai_prepare(fe, substream->stream);
if (ret < 0)
goto out;
/* call prepare on the frontend */
if (!fe->fe_compr) {
ret = soc_pcm_prepare(substream);
if (ret < 0) {
dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
fe->dai_link->name);
goto out;
}
}
ret = soc_pcm_prepare(substream);
if (ret < 0) {
dev_err(fe->dev,"dpcm: prepare FE %s failed\n", fe->dai_link->name);
goto out;
}
/* run the stream event for each BE */
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
else
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->capture.stream_name,
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->dpcm_mutex);
return ret;
}
int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_soc_dpcm_params *dpcm_params;
/* only hw_params backends that are either sinks or sources
* to this frontend DAI */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_pcm_substream *be_substream =
snd_soc_dpcm_get_substream(be, stream);
/* is this op for this BE ? */
if (!snd_soc_dpcm_be_can_update(fe, be, stream))
continue;
/* only free hw when no longer used - check all FEs */
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
continue;
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
!((be->dpcm[stream].state == SND_SOC_DPCM_STATE_START) &&
((fe->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&
(fe->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
(fe->dpcm[stream].state !=
SND_SOC_DPCM_STATE_SUSPEND))))
continue;
dev_dbg(be->dev, "dpcm: hw_free BE %s\n",
dpcm_params->fe->dai_link->name);
soc_pcm_hw_free(be_substream);
be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
}
return 0;
}
int soc_dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
int err, stream = substream->stream;
mutex_lock(&fe->card->dpcm_mutex);
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
dev_dbg(fe->dev, "dpcm: hw_free FE %s\n", fe->dai_link->name);
/* call hw_free on the frontend */
err = soc_pcm_hw_free(substream);
if (err < 0)
dev_err(fe->dev,"dpcm: hw_free FE %s failed\n", fe->dai_link->name);
/* only hw_params backends that are either sinks or sources
* to this frontend DAI */
err = dpcm_be_dai_hw_free(fe, stream);
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
mutex_unlock(&fe->card->dpcm_mutex);
return 0;
}
static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
if (platform->driver->ops->ioctl)
return platform->driver->ops->ioctl(substream, cmd, arg);
return snd_pcm_lib_ioctl(substream, cmd, arg);
}
static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream);
enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
int err;
dev_dbg(fe->dev, "runtime %s close on FE %s\n",
stream ? "capture" : "playback", fe->dai_link->name);
if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
/* call bespoke trigger - FE takes care of all BE triggers */
dev_dbg(fe->dev, "dpcm: bespoke trigger FE %s cmd stop\n",
fe->dai_link->name);
err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
if (err < 0)
dev_err(fe->dev,"dpcm: trigger FE failed %d\n", err);
} else {
dev_dbg(fe->dev, "dpcm: trigger FE %s cmd stop\n",
fe->dai_link->name);
err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
if (err < 0)
dev_err(fe->dev,"dpcm: trigger FE failed %d\n", err);
}
err = dpcm_be_dai_hw_free(fe, stream);
if (err < 0)
dev_err(fe->dev,"dpcm: hw_free FE failed %d\n", err);
err = dpcm_be_dai_shutdown(fe, stream);
if (err < 0)
dev_err(fe->dev,"dpcm: shutdown FE failed %d\n", err);
/* run the stream event for each BE */
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_NOP);
else
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->capture.stream_name,
SND_SOC_DAPM_STREAM_NOP);
return 0;
}
static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
{
struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream);
struct snd_soc_dpcm_params *dpcm_params;
enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
int ret;
dev_dbg(fe->dev, "runtime %s open on FE %s\n",
stream ? "capture" : "playback", fe->dai_link->name);
/* Only start the BE if the FE is ready */
if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
return -EINVAL;
/* startup must always be called for new BEs */
ret = dpcm_be_dai_startup(fe, stream);
if (ret < 0) {
goto disconnect;
return ret;
}
/* keep going if FE state is > open */
if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
return 0;
ret = dpcm_be_dai_hw_params(fe, stream);
if (ret < 0) {
goto close;
return ret;
}
/* keep going if FE state is > hw_params */
if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
return 0;
ret = dpcm_be_dai_prepare(fe, stream);
if (ret < 0) {
goto hw_free;
return ret;
}
/* run the stream event for each BE */
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->playback.stream_name,
SND_SOC_DAPM_STREAM_NOP);
else
dpcm_dapm_stream_event(fe, stream,
fe->cpu_dai->driver->capture.stream_name,
SND_SOC_DAPM_STREAM_NOP);
/* keep going if FE state is > prepare */
if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
return 0;
if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
/* call trigger on the frontend - FE takes care of all BE triggers */
dev_dbg(fe->dev, "dpcm: bespoke trigger FE %s cmd start\n",
fe->dai_link->name);
ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
if (ret < 0) {
dev_err(fe->dev,"dpcm: bespoke trigger FE failed %d\n", ret);
goto hw_free;
}
} else {
dev_dbg(fe->dev, "dpcm: trigger FE %s cmd start\n",
fe->dai_link->name);
ret = dpcm_be_dai_trigger(fe, stream,
SNDRV_PCM_TRIGGER_START);
if (ret < 0) {
dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret);
goto hw_free;
}
}
return 0;
hw_free:
dpcm_be_dai_hw_free(fe, stream);
close:
dpcm_be_dai_shutdown(fe, stream);
disconnect:
/* disconnect any non started BEs */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
dpcm_params->state = SND_SOC_DPCM_LINK_STATE_FREE;
}
return ret;
}
static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
{
int ret;
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
ret = dpcm_run_update_startup(fe, stream);
if (ret < 0)
dev_err(fe->dev, "failed to startup some BEs\n");
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
return ret;
}
static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
{
int ret;
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
ret = dpcm_run_update_shutdown(fe, stream);
if (ret < 0)
dev_err(fe->dev, "failed to shutdown some BEs\n");
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
return ret;
}
/* called when any mixer updates change FE -> BE the stream */
int soc_dpcm_runtime_update(struct snd_soc_dapm_widget *widget)
{
struct snd_soc_card *card;
int i, ret = 0, old, new, paths;
if (widget->codec)
card = widget->codec->card;
else if (widget->platform)
card = widget->platform->card;
else
return -EINVAL;
mutex_lock(&card->dpcm_mutex);
for (i = 0; i < card->num_rtd; i++) {
struct snd_soc_dapm_widget_list *list;
struct snd_soc_pcm_runtime *fe = &card->rtd[i];
/* make sure link is FE */
if (!fe->dai_link->dynamic)
continue;
/* only check active links */
if (!fe->cpu_dai->active)
continue;
/* DAPM sync will call this to update DSP paths */
dev_dbg(fe->dev, "DPCM runtime update for FE %s\n", fe->dai_link->name);
/* skip if FE doesn't have playback capability */
if (!fe->cpu_dai->driver->playback.channels_min)
goto capture;
paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
if (paths < 0) {
dev_warn(fe->dev, "%s no valid %s route from source to sink\n",
fe->dai_link->name, "playback");
ret = paths;
goto out;
}
/* update any new playback paths */
new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1);
if (new) {
dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
}
/* update any old playback paths */
old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0);
if (old) {
dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
}
dpcm_path_put(&list);
capture:
/* skip if FE doesn't have capture capability */
if (!fe->cpu_dai->driver->capture.channels_min)
continue;
paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
if (paths < 0) {
dev_warn(fe->dev, "%s no valid %s route from source to sink\n",
fe->dai_link->name, "capture");
ret = paths;
goto out;
}
/* update any new capture paths */
new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1);
if (new) {
dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
}
/* update any old capture paths */
old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0);
if (old) {
dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
}
dpcm_path_put(&list);
}
out:
mutex_unlock(&card->dpcm_mutex);
return ret;
}
int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
{
struct snd_soc_dpcm_params *dpcm_params;
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->codec_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "BE digital mute %s\n", be->dai_link->name);
if (drv->ops->digital_mute && dai->playback_active)
drv->ops->digital_mute(dai, mute);
}
return 0;
}
int soc_dpcm_be_cpu_dai_suspend(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dpcm_params *dpcm_params;
/* suspend for playback */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI playback suspend %s\n",
be->dai_link->name);
if (drv->suspend && !drv->ac97_control)
drv->suspend(dai);
}
/* suspend for capture */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI capture suspend %s\n",
be->dai_link->name);
if (drv->suspend && !drv->ac97_control)
drv->suspend(dai);
}
return 0;
}
int soc_dpcm_be_ac97_cpu_dai_suspend(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dpcm_params *dpcm_params;
/* suspend for playback */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI playback suspend %s\n",
be->dai_link->name);
if (drv->suspend && drv->ac97_control)
drv->suspend(dai);
}
/* suspend for capture */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI capture suspend %s\n",
be->dai_link->name);
if (drv->suspend && drv->ac97_control)
drv->suspend(dai);
}
return 0;
}
int soc_dpcm_be_platform_suspend(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dpcm_params *dpcm_params;
/* suspend for playback */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_platform *platform = be->platform;
struct snd_soc_platform_driver *drv = platform->driver;
struct snd_soc_dai *dai = be->cpu_dai;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE platform playback suspend %s\n",
be->dai_link->name);
if (drv->suspend && !platform->suspended) {
drv->suspend(dai);
platform->suspended = 1;
}
}
/* suspend for capture */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_platform *platform = be->platform;
struct snd_soc_platform_driver *drv = platform->driver;
struct snd_soc_dai *dai = be->cpu_dai;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE platform capture suspend %s\n",
be->dai_link->name);
if (drv->suspend && !platform->suspended) {
drv->suspend(dai);
platform->suspended = 1;
}
}
return 0;
}
int soc_dpcm_fe_suspend(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dai *dai = fe->cpu_dai;
struct snd_soc_dai_driver *dai_drv = dai->driver;
struct snd_soc_platform *platform = fe->platform;
struct snd_soc_platform_driver *plat_drv = platform->driver;
if (dai_drv->suspend && !dai_drv->ac97_control)
dai_drv->suspend(dai);
if (plat_drv->suspend && !platform->suspended) {
plat_drv->suspend(dai);
platform->suspended = 1;
}
soc_dpcm_be_cpu_dai_suspend(fe);
soc_dpcm_be_platform_suspend(fe);
return 0;
}
int soc_dpcm_be_cpu_dai_resume(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dpcm_params *dpcm_params;
/* resume for playback */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI playback resume %s\n",
be->dai_link->name);
if (drv->resume && !drv->ac97_control)
drv->resume(dai);
}
/* suspend for capture */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI capture resume %s\n",
be->dai_link->name);
if (drv->resume && !drv->ac97_control)
drv->resume(dai);
}
return 0;
}
int soc_dpcm_be_ac97_cpu_dai_resume(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dpcm_params *dpcm_params;
/* resume for playback */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI playback resume %s\n",
be->dai_link->name);
if (drv->resume && drv->ac97_control)
drv->resume(dai);
}
/* suspend for capture */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_dai *dai = be->cpu_dai;
struct snd_soc_dai_driver *drv = dai->driver;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE CPU DAI capture resume %s\n",
be->dai_link->name);
if (drv->resume && drv->ac97_control)
drv->resume(dai);
}
return 0;
}
int soc_dpcm_be_platform_resume(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dpcm_params *dpcm_params;
/* resume for playback */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_platform *platform = be->platform;
struct snd_soc_platform_driver *drv = platform->driver;
struct snd_soc_dai *dai = be->cpu_dai;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE platform playback resume %s\n",
be->dai_link->name);
if (drv->resume && platform->suspended) {
drv->resume(dai);
platform->suspended = 0;
}
}
/* resume for capture */
list_for_each_entry(dpcm_params,
&fe->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
struct snd_soc_platform *platform = be->platform;
struct snd_soc_platform_driver *drv = platform->driver;
struct snd_soc_dai *dai = be->cpu_dai;
if (be->dai_link->ignore_suspend)
continue;
dev_dbg(be->dev, "pm: BE platform capture resume %s\n",
be->dai_link->name);
if (drv->resume && platform->suspended) {
drv->resume(dai);
platform->suspended = 0;
}
}
return 0;
}
int soc_dpcm_fe_resume(struct snd_soc_pcm_runtime *fe)
{
struct snd_soc_dai *dai = fe->cpu_dai;
struct snd_soc_dai_driver *dai_drv = dai->driver;
struct snd_soc_platform *platform = fe->platform;
struct snd_soc_platform_driver *plat_drv = platform->driver;
soc_dpcm_be_cpu_dai_resume(fe);
soc_dpcm_be_platform_resume(fe);
if (dai_drv->resume && !dai_drv->ac97_control)
dai_drv->resume(dai);
if (plat_drv->resume && platform->suspended) {
plat_drv->resume(dai);
platform->suspended = 0;
}
return 0;
}
/* called when opening FE stream */
int soc_dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
{
struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
struct snd_soc_dpcm_params *dpcm_params;
struct snd_soc_dapm_widget_list *list;
int ret;
int stream = fe_substream->stream;
mutex_lock(&fe->card->dpcm_mutex);
fe->dpcm[stream].runtime = fe_substream->runtime;
if (dpcm_path_get(fe, stream, &list) <= 0) {
dev_warn(fe->dev, "asoc: %s no valid %s route from source to sink\n",
fe->dai_link->name, stream ? "capture" : "playback");
mutex_unlock(&fe->card->dpcm_mutex);
return -EINVAL;
}
/* calculate valid and active FE <-> BE dpcm_paramss */
dpcm_process_paths(fe, stream, &list, 1);
ret = soc_dpcm_fe_dai_startup(fe_substream);
if (ret < 0) {
/* clean up all links */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be)
dpcm_params->state = SND_SOC_DPCM_LINK_STATE_FREE;
dpcm_be_disconnect(fe, stream);
fe->dpcm[stream].runtime = NULL;
}
dpcm_clear_pending_state(fe, stream);
dpcm_path_put(&list);
mutex_unlock(&fe->card->dpcm_mutex);
return ret;
}
/* called when closing FE stream */
int soc_dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
{
struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
struct snd_soc_dpcm_params *dpcm_params;
int stream = fe_substream->stream, ret;
mutex_lock(&fe->card->dpcm_mutex);
ret = soc_dpcm_fe_dai_shutdown(fe_substream);
/* mark FE's links ready to prune */
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be)
dpcm_params->state = SND_SOC_DPCM_LINK_STATE_FREE;
dpcm_be_disconnect(fe, stream);
fe->dpcm[stream].runtime = NULL;
mutex_unlock(&fe->card->dpcm_mutex);
return ret;
}
/* create a new pcm */
int soc_new_pcm(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_pcm_substream *substream[2];
struct snd_pcm *pcm;
char new_name[64];
int ret = 0, playback = 0, capture = 0;
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
if (cpu_dai->driver->playback.channels_min)
playback = 1;
if (cpu_dai->driver->capture.channels_min)
capture = 1;
} else {
if (codec_dai->driver->playback.channels_min)
playback = 1;
if (codec_dai->driver->capture.channels_min)
capture = 1;
}
/* create the PCM */
if (rtd->dai_link->no_pcm) {
snprintf(new_name, sizeof(new_name), "(%s)",
rtd->dai_link->stream_name);
ret = snd_pcm_new_soc_be(rtd->card->snd_card, new_name, num,
playback, capture, &pcm);
} else {
if (rtd->dai_link->dynamic)
snprintf(new_name, sizeof(new_name), "%s (*)",
rtd->dai_link->stream_name);
else
snprintf(new_name, sizeof(new_name), "%s %s-%d",
rtd->dai_link->stream_name, codec_dai->name, num);
ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
capture, &pcm);
}
if (ret < 0) {
printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
return ret;
}
dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num, new_name);
rtd->pcm = pcm;
pcm->private_data = rtd;
INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
substream[SNDRV_PCM_STREAM_PLAYBACK] =
pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
substream[SNDRV_PCM_STREAM_CAPTURE] =
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
if (rtd->dai_link->no_pcm) {
if (playback)
substream[SNDRV_PCM_STREAM_PLAYBACK]->private_data = rtd;
if (capture)
substream[SNDRV_PCM_STREAM_CAPTURE]->private_data = rtd;
goto out;
}
/* setup any hostless PCMs - i.e. no host IO is performed */
if (rtd->dai_link->no_host_mode) {
if (substream[SNDRV_PCM_STREAM_PLAYBACK]) {
substream[SNDRV_PCM_STREAM_PLAYBACK]->hw_no_buffer = 1;
snd_soc_set_runtime_hwparams(
substream[SNDRV_PCM_STREAM_PLAYBACK],
&no_host_hardware);
}
if (substream[SNDRV_PCM_STREAM_CAPTURE]) {
substream[SNDRV_PCM_STREAM_CAPTURE]->hw_no_buffer = 1;
snd_soc_set_runtime_hwparams(
substream[SNDRV_PCM_STREAM_CAPTURE],
&no_host_hardware);
}
}
/* ASoC PCM operations */
if (rtd->dai_link->dynamic) {
rtd->ops.open = soc_dpcm_fe_dai_open;
rtd->ops.hw_params = soc_dpcm_fe_dai_hw_params;
rtd->ops.prepare = soc_dpcm_fe_dai_prepare;
rtd->ops.trigger = soc_dpcm_fe_dai_trigger;
rtd->ops.hw_free = soc_dpcm_fe_dai_hw_free;
rtd->ops.close = soc_dpcm_fe_dai_close;
rtd->ops.pointer = soc_pcm_pointer;
rtd->ops.ioctl = soc_pcm_ioctl;
} else {
rtd->ops.open = soc_pcm_open;
rtd->ops.hw_params = soc_pcm_hw_params;
rtd->ops.prepare = soc_pcm_prepare;
rtd->ops.trigger = soc_pcm_trigger;
rtd->ops.hw_free = soc_pcm_hw_free;
rtd->ops.close = soc_pcm_close;
rtd->ops.pointer = soc_pcm_pointer;
rtd->ops.ioctl = soc_pcm_ioctl;
}
if (platform->driver->ops) {
rtd->ops.ack = platform->driver->ops->ack;
rtd->ops.copy = platform->driver->ops->copy;
rtd->ops.silence = platform->driver->ops->silence;
rtd->ops.page = platform->driver->ops->page;
rtd->ops.mmap = platform->driver->ops->mmap;
rtd->ops.restart = platform->driver->ops->restart;
}
if (playback)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
if (capture)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
if (platform->driver->pcm_new) {
ret = platform->driver->pcm_new(rtd);
if (ret < 0) {
pr_err("asoc: platform pcm constructor failed\n");
return ret;
}
}
pcm->private_free = platform->driver->pcm_free;
out:
printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
cpu_dai->name);
return ret;
}
#ifdef CONFIG_DEBUG_FS
static char *dpcm_state_string(enum snd_soc_dpcm_state state)
{
switch (state) {
case SND_SOC_DPCM_STATE_NEW:
return "new";
case SND_SOC_DPCM_STATE_OPEN:
return "open";
case SND_SOC_DPCM_STATE_HW_PARAMS:
return "hw_params";
case SND_SOC_DPCM_STATE_PREPARE:
return "prepare";
case SND_SOC_DPCM_STATE_START:
return "start";
case SND_SOC_DPCM_STATE_STOP:
return "stop";
case SND_SOC_DPCM_STATE_SUSPEND:
return "suspend";
case SND_SOC_DPCM_STATE_PAUSED:
return "paused";
case SND_SOC_DPCM_STATE_HW_FREE:
return "hw_free";
case SND_SOC_DPCM_STATE_CLOSE:
return "close";
}
return "unknown";
}
static int soc_dpcm_state_open_file(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static ssize_t soc_dpcm_show_state(struct snd_soc_pcm_runtime *fe,
int stream, char *buf, size_t size)
{
struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
struct snd_soc_dpcm_params *dpcm_params;
ssize_t offset = 0;
/* FE state */
offset += snprintf(buf + offset, size - offset,
"[%s - %s]\n", fe->dai_link->name,
stream ? "Capture" : "Playback");
offset += snprintf(buf + offset, size - offset, "State: %s\n",
dpcm_state_string(fe->dpcm[stream].state));
if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
(fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
offset += snprintf(buf + offset, size - offset,
"Hardware Params: "
"Format = %s, Channels = %d, Rate = %d\n",
snd_pcm_format_name(params_format(params)),
params_channels(params),
params_rate(params));
/* BEs state */
offset += snprintf(buf + offset, size - offset, "Backends:\n");
if (list_empty(&fe->dpcm[stream].be_clients)) {
offset += snprintf(buf + offset, size - offset,
" No active DSP links\n");
goto out;
}
list_for_each_entry(dpcm_params, &fe->dpcm[stream].be_clients, list_be) {
struct snd_soc_pcm_runtime *be = dpcm_params->be;
offset += snprintf(buf + offset, size - offset,
"- %s\n", be->dai_link->name);
offset += snprintf(buf + offset, size - offset,
" State: %s\n",
dpcm_state_string(fe->dpcm[stream].state));
if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
(be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
offset += snprintf(buf + offset, size - offset,
" Hardware Params: "
"Format = %s, Channels = %d, Rate = %d\n",
snd_pcm_format_name(params_format(params)),
params_channels(params),
params_rate(params));
}
out:
return offset;
}
static ssize_t soc_dpcm_state_read_file(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct snd_soc_pcm_runtime *fe = file->private_data;
ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
char *buf;
buf = kmalloc(out_count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (fe->cpu_dai->driver->playback.channels_min)
offset += soc_dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
buf + offset, out_count - offset);
if (fe->cpu_dai->driver->capture.channels_min)
offset += soc_dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
buf + offset, out_count - offset);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
kfree(buf);
return ret;
}
static const struct file_operations soc_dpcm_state_fops = {
.open = soc_dpcm_state_open_file,
.read = soc_dpcm_state_read_file,
.llseek = default_llseek,
};
int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
{
rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
rtd->card->debugfs_card_root);
if (!rtd->debugfs_dpcm_root) {
dev_dbg(rtd->dev,
"ASoC: Failed to create dpcm debugfs directory %s\n",
rtd->dai_link->name);
return -EINVAL;
}
rtd->debugfs_dpcm_state = debugfs_create_file("state", 0644,
rtd->debugfs_dpcm_root,
rtd, &soc_dpcm_state_fops);
return 0;
}
#endif