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ASoC: Add Multi CPU DAI support

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Merge series from Bard Liao <yung-chuan.liao@linux.intel.com>:

As discussed in [1], ASoC core supports multi codec DAIs
on a DAI link. However it does not do so for CPU DAIs.

So, add support for multi CPU DAIs on a DAI Link by adding
multi CPU DAI in Card instantiation, suspend and resume
functions, PCM ops, stream handling functions and DAPM.

[1]: https://www.spinics.net/lists/alsa-devel/msg71369.html

changes in v5:
- rebase to latest kernel base

Bard Liao (2):
  ASoC: Return error if the function does not support multi-cpu
  ASoC: pcm: check if cpu-dai supports a given stream

Shreyas NC (4):
  ASoC: Add initial support for multiple CPU DAIs
  ASoC: Add multiple CPU DAI support for PCM ops
  ASoC: Add dapm_add_valid_dai_widget helper
  ASoC: Add multiple CPU DAI support in DAPM

 include/sound/soc.h                   |  15 +
 sound/soc/soc-compress.c              |   5 +-
 sound/soc/soc-core.c                  | 168 +++++-----
 sound/soc/soc-dapm.c                  | 133 ++++----
 sound/soc/soc-generic-dmaengine-pcm.c |  18 +
 sound/soc/soc-pcm.c                   | 463 ++++++++++++++++++--------
 6 files changed, 531 insertions(+), 271 deletions(-)

--
2.17.1
This commit is contained in:
Mark Brown 2020-02-26 18:14:19 +00:00
commit 8ae7fdc359
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
6 changed files with 528 additions and 268 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
include/sound/soc.h
View File

@ -855,6 +855,11 @@ struct snd_soc_dai_link {
((platform) = &link->platforms[i]); \
(i)++)
#define for_each_link_cpus(link, i, cpu) \
for ((i) = 0; \
((i) < link->num_cpus) && ((cpu) = &link->cpus[i]); \
(i)++)
/*
* Sample 1 : Single CPU/Codec/Platform
*
@ -1132,6 +1137,9 @@ struct snd_soc_pcm_runtime {
struct snd_soc_dai **codec_dais;
unsigned int num_codecs;
struct snd_soc_dai **cpu_dais;
unsigned int num_cpus;
struct delayed_work delayed_work;
void (*close_delayed_work_func)(struct snd_soc_pcm_runtime *rtd);
#ifdef CONFIG_DEBUG_FS
@ -1159,6 +1167,13 @@ struct snd_soc_pcm_runtime {
#define for_each_rtd_codec_dai_rollback(rtd, i, dai) \
for (; (--(i) >= 0) && ((dai) = rtd->codec_dais[i]);)
#define for_each_rtd_cpu_dai(rtd, i, dai)\
for ((i) = 0; \
((i) < rtd->num_cpus) && ((dai) = rtd->cpu_dais[i]); \
(i)++)
#define for_each_rtd_cpu_dai_rollback(rtd, i, dai) \
for (; (--(i) >= 0) && ((dai) = rtd->cpu_dais[i]);)
void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd);
/* mixer control */

5
sound/soc/soc-compress.c
View File

@ -810,9 +810,10 @@ int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
int playback = 0, capture = 0;
int i;
if (rtd->num_codecs > 1) {
if (rtd->num_cpus > 1 ||
rtd->num_codecs > 1) {
dev_err(rtd->card->dev,
"Compress ASoC: Multicodec not supported\n");
"Compress ASoC: Multi CPU/Codec not supported\n");
return -EINVAL;
}

168
sound/soc/soc-core.c
View File

@ -483,6 +483,14 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
if (!rtd->codec_dais)
goto free_rtd;
/*
* for rtd->cpu_dais
*/
rtd->cpu_dais = devm_kcalloc(dev, dai_link->num_cpus,
sizeof(struct snd_soc_dai *),
GFP_KERNEL);
if (!rtd->cpu_dais)
goto free_rtd;
/*
* rtd remaining settings
*/
@ -833,7 +841,7 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card,
struct snd_soc_dai_link *link)
{
int i;
struct snd_soc_dai_link_component *codec, *platform;
struct snd_soc_dai_link_component *cpu, *codec, *platform;
for_each_link_codecs(link, i, codec) {
/*
@ -882,44 +890,38 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card,
return -EPROBE_DEFER;
}
/* FIXME */
if (link->num_cpus > 1) {
dev_err(card->dev,
"ASoC: multi cpu is not yet supported %s\n",
link->name);
return -EINVAL;
}
for_each_link_cpus(link, i, cpu) {
/*
* CPU device may be specified by either name or OF node, but
* can be left unspecified, and will be matched based on DAI
* name alone..
*/
if (cpu->name && cpu->of_node) {
dev_err(card->dev,
"ASoC: Neither/both cpu name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
/*
* CPU device may be specified by either name or OF node, but
* can be left unspecified, and will be matched based on DAI
* name alone..
*/
if (link->cpus->name && link->cpus->of_node) {
dev_err(card->dev,
"ASoC: Neither/both cpu name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
/*
* Defer card registration if cpu dai component is not added to
* component list.
*/
if ((cpu->of_node || cpu->name) &&
!soc_find_component(cpu))
return -EPROBE_DEFER;
/*
* Defer card registration if cpu dai component is not added to
* component list.
*/
if ((link->cpus->of_node || link->cpus->name) &&
!soc_find_component(link->cpus))
return -EPROBE_DEFER;
/*
* At least one of CPU DAI name or CPU device name/node must be
* specified
*/
if (!link->cpus->dai_name &&
!(link->cpus->name || link->cpus->of_node)) {
dev_err(card->dev,
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
link->name);
return -EINVAL;
/*
* At least one of CPU DAI name or CPU device name/node must be
* specified
*/
if (!cpu->dai_name &&
!(cpu->name || cpu->of_node)) {
dev_err(card->dev,
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
}
return 0;
@ -962,7 +964,7 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_dai_link_component *codec, *platform;
struct snd_soc_dai_link_component *codec, *platform, *cpu;
struct snd_soc_component *component;
int i, ret;
@ -987,14 +989,19 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card,
if (!rtd)
return -ENOMEM;
/* FIXME: we need multi CPU support in the future */
rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus);
if (!rtd->cpu_dai) {
dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
dai_link->cpus->dai_name);
goto _err_defer;
rtd->num_cpus = dai_link->num_cpus;
for_each_link_cpus(dai_link, i, cpu) {
rtd->cpu_dais[i] = snd_soc_find_dai(cpu);
if (!rtd->cpu_dais[i]) {
dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
cpu->dai_name);
goto _err_defer;
}
snd_soc_rtd_add_component(rtd, rtd->cpu_dais[i]->component);
}
snd_soc_rtd_add_component(rtd, rtd->cpu_dai->component);
/* Single cpu links expect cpu and cpu_dai in runtime data */
rtd->cpu_dai = rtd->cpu_dais[0];
/* Find CODEC from registered CODECs */
rtd->num_codecs = dai_link->num_codecs;
@ -1114,7 +1121,8 @@ static int soc_init_pcm_runtime(struct snd_soc_card *card,
dai_link->stream_name, ret);
return ret;
}
ret = soc_dai_pcm_new(&cpu_dai, 1, rtd);
ret = soc_dai_pcm_new(rtd->cpu_dais,
rtd->num_cpus, rtd);
if (ret < 0)
return ret;
ret = soc_dai_pcm_new(rtd->codec_dais,
@ -1306,6 +1314,7 @@ static void soc_remove_link_dais(struct snd_soc_card *card)
{
int i;
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_pcm_runtime *rtd;
int order;
@ -1315,14 +1324,15 @@ static void soc_remove_link_dais(struct snd_soc_card *card)
for_each_rtd_codec_dai(rtd, i, codec_dai)
soc_remove_dai(codec_dai, order);
soc_remove_dai(rtd->cpu_dai, order);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
soc_remove_dai(cpu_dai, order);
}
}
}
static int soc_probe_link_dais(struct snd_soc_card *card)
{
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *codec_dai, *cpu_dai;
struct snd_soc_pcm_runtime *rtd;
int i, order, ret;
@ -1333,9 +1343,12 @@ static int soc_probe_link_dais(struct snd_soc_card *card)
"ASoC: probe %s dai link %d late %d\n",
card->name, rtd->num, order);
ret = soc_probe_dai(rtd->cpu_dai, order);
if (ret)
return ret;
/* probe the CPU DAI */
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = soc_probe_dai(cpu_dai, order);
if (ret)
return ret;
}
/* probe the CODEC DAI */
for_each_rtd_codec_dai(rtd, i, codec_dai) {
@ -1467,8 +1480,9 @@ static void soc_remove_aux_devices(struct snd_soc_card *card)
int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
unsigned int dai_fmt)
{
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
unsigned int inv_dai_fmt;
unsigned int i;
int ret;
@ -1485,33 +1499,33 @@ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
* Flip the polarity for the "CPU" end of a CODEC<->CODEC link
* the component which has non_legacy_dai_naming is Codec
*/
if (cpu_dai->component->driver->non_legacy_dai_naming) {
unsigned int inv_dai_fmt;
inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
break;
case SND_SOC_DAIFMT_CBM_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
break;
case SND_SOC_DAIFMT_CBS_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
break;
case SND_SOC_DAIFMT_CBS_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
break;
}
dai_fmt = inv_dai_fmt;
inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
break;
case SND_SOC_DAIFMT_CBM_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
break;
case SND_SOC_DAIFMT_CBS_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
break;
case SND_SOC_DAIFMT_CBS_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
break;
}
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
unsigned int fmt = dai_fmt;
ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
if (ret != 0 && ret != -ENOTSUPP) {
dev_warn(cpu_dai->dev,
"ASoC: Failed to set DAI format: %d\n", ret);
return ret;
if (cpu_dai->component->driver->non_legacy_dai_naming)
fmt = inv_dai_fmt;
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret != 0 && ret != -ENOTSUPP) {
dev_warn(cpu_dai->dev,
"ASoC: Failed to set DAI format: %d\n", ret);
return ret;
}
}
return 0;

127
sound/soc/soc-dapm.c
View File

@ -4277,16 +4277,15 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
return 0;
}
static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
struct snd_soc_pcm_runtime *rtd)
static void dapm_add_valid_dai_widget(struct snd_soc_card *card,
struct snd_soc_pcm_runtime *rtd,
struct snd_soc_dai *codec_dai,
struct snd_soc_dai *cpu_dai)
{
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
struct snd_soc_dapm_widget *playback = NULL, *capture = NULL;
struct snd_soc_dapm_widget *codec, *playback_cpu, *capture_cpu;
struct snd_pcm_substream *substream;
struct snd_pcm_str *streams = rtd->pcm->streams;
int i;
if (rtd->dai_link->params) {
playback_cpu = cpu_dai->capture_widget;
@ -4298,67 +4297,85 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
capture_cpu = capture;
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
/* connect BE DAI playback if widgets are valid */
codec = codec_dai->playback_widget;
/* connect BE DAI playback if widgets are valid */
codec = codec_dai->playback_widget;
if (playback_cpu && codec) {
if (!playback) {
substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
playback = snd_soc_dapm_new_dai(card, substream,
"playback");
if (IS_ERR(playback)) {
dev_err(rtd->dev,
"ASoC: Failed to create DAI %s: %ld\n",
codec_dai->name,
PTR_ERR(playback));
continue;
}
snd_soc_dapm_add_path(&card->dapm, playback_cpu,
playback, NULL, NULL);
if (playback_cpu && codec) {
if (!playback) {
substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
playback = snd_soc_dapm_new_dai(card, substream,
"playback");
if (IS_ERR(playback)) {
dev_err(rtd->dev,
"ASoC: Failed to create DAI %s: %ld\n",
codec_dai->name,
PTR_ERR(playback));
goto capture;
}
dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
cpu_dai->component->name, playback_cpu->name,
codec_dai->component->name, codec->name);
snd_soc_dapm_add_path(&card->dapm, playback, codec,
NULL, NULL);
snd_soc_dapm_add_path(&card->dapm, playback_cpu,
playback, NULL, NULL);
}
dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
cpu_dai->component->name, playback_cpu->name,
codec_dai->component->name, codec->name);
snd_soc_dapm_add_path(&card->dapm, playback, codec,
NULL, NULL);
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
/* connect BE DAI capture if widgets are valid */
codec = codec_dai->capture_widget;
capture:
/* connect BE DAI capture if widgets are valid */
codec = codec_dai->capture_widget;
if (codec && capture_cpu) {
if (!capture) {
substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
capture = snd_soc_dapm_new_dai(card, substream,
"capture");
if (IS_ERR(capture)) {
dev_err(rtd->dev,
"ASoC: Failed to create DAI %s: %ld\n",
codec_dai->name,
PTR_ERR(capture));
continue;
}
snd_soc_dapm_add_path(&card->dapm, capture,
capture_cpu, NULL, NULL);
if (codec && capture_cpu) {
if (!capture) {
substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
capture = snd_soc_dapm_new_dai(card, substream,
"capture");
if (IS_ERR(capture)) {
dev_err(rtd->dev,
"ASoC: Failed to create DAI %s: %ld\n",
codec_dai->name,
PTR_ERR(capture));
return;
}
dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
codec_dai->component->name, codec->name,
cpu_dai->component->name, capture_cpu->name);
snd_soc_dapm_add_path(&card->dapm, codec, capture,
NULL, NULL);
snd_soc_dapm_add_path(&card->dapm, capture,
capture_cpu, NULL, NULL);
}
dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
codec_dai->component->name, codec->name,
cpu_dai->component->name, capture_cpu->name);
snd_soc_dapm_add_path(&card->dapm, codec, capture,
NULL, NULL);
}
}
static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *codec_dai;
int i;
if (rtd->num_cpus == 1) {
for_each_rtd_codec_dai(rtd, i, codec_dai)
dapm_add_valid_dai_widget(card, rtd, codec_dai,
rtd->cpu_dais[0]);
} else if (rtd->num_codecs == rtd->num_cpus) {
for_each_rtd_codec_dai(rtd, i, codec_dai)
dapm_add_valid_dai_widget(card, rtd, codec_dai,
rtd->cpu_dais[i]);
} else {
dev_err(card->dev,
"N cpus to M codecs link is not supported yet\n");
}
}
static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
int event)
{
@ -4417,9 +4434,11 @@ static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
int event)
{
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
int i;
soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
for_each_rtd_codec_dai(rtd, i, codec_dai)
soc_dapm_dai_stream_event(codec_dai, stream, event);

18
sound/soc/soc-generic-dmaengine-pcm.c
View File

@ -62,6 +62,12 @@ int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
struct snd_dmaengine_dai_dma_data *dma_data;
int ret;
if (rtd->num_cpus > 1) {
dev_err(rtd->dev,
"%s doesn't support Multi CPU yet\n", __func__);
return -EINVAL;
}
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config);
@ -118,6 +124,12 @@ dmaengine_pcm_set_runtime_hwparams(struct snd_soc_component *component,
struct snd_dmaengine_dai_dma_data *dma_data;
struct snd_pcm_hardware hw;
if (rtd->num_cpus > 1) {
dev_err(rtd->dev,
"%s doesn't support Multi CPU yet\n", __func__);
return -EINVAL;
}
if (pcm->config && pcm->config->pcm_hardware)
return snd_soc_set_runtime_hwparams(substream,
pcm->config->pcm_hardware);
@ -185,6 +197,12 @@ static struct dma_chan *dmaengine_pcm_compat_request_channel(
struct snd_dmaengine_dai_dma_data *dma_data;
dma_filter_fn fn = NULL;
if (rtd->num_cpus > 1) {
dev_err(rtd->dev,
"%s doesn't support Multi CPU yet\n", __func__);
return NULL;
}
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])

463
sound/soc/soc-pcm.c
View File

@ -125,6 +125,12 @@ static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
int stream;
char *buf;
if (fe->num_cpus > 1) {
dev_err(fe->dev,
"%s doesn't support Multi CPU yet\n", __func__);
return -EINVAL;
}
buf = kmalloc(out_count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
@ -253,18 +259,22 @@ static int soc_rtd_trigger(struct snd_soc_pcm_runtime *rtd,
static void snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd,
int stream, int action)
{
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i;
lockdep_assert_held(&rtd->card->pcm_mutex);
cpu_dai->stream_active[stream] += action;
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
cpu_dai->stream_active[stream] += action;
for_each_rtd_codec_dai(rtd, i, codec_dai)
codec_dai->stream_active[stream] += action;
cpu_dai->active += action;
cpu_dai->component->active += action;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
cpu_dai->active += action;
cpu_dai->component->active += action;
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
codec_dai->active += action;
codec_dai->component->active += action;
@ -434,7 +444,7 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
unsigned int rate, channels, sample_bits, symmetry, i;
@ -443,40 +453,60 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
sample_bits = snd_pcm_format_physical_width(params_format(params));
/* reject unmatched parameters when applying symmetry */
symmetry = cpu_dai->driver->symmetric_rates ||
rtd->dai_link->symmetric_rates;
symmetry = rtd->dai_link->symmetric_rates;
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
symmetry |= cpu_dai->driver->symmetric_rates;
for_each_rtd_codec_dai(rtd, i, codec_dai)
symmetry |= codec_dai->driver->symmetric_rates;
if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) {
dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n",
cpu_dai->rate, rate);
return -EINVAL;
if (symmetry) {
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (cpu_dai->rate && cpu_dai->rate != rate) {
dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n",
cpu_dai->rate, rate);
return -EINVAL;
}
}
}
symmetry = cpu_dai->driver->symmetric_channels ||
rtd->dai_link->symmetric_channels;
symmetry = rtd->dai_link->symmetric_channels;
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
symmetry |= cpu_dai->driver->symmetric_channels;
for_each_rtd_codec_dai(rtd, i, codec_dai)
symmetry |= codec_dai->driver->symmetric_channels;
if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) {
dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n",
cpu_dai->channels, channels);
return -EINVAL;
if (symmetry) {
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (cpu_dai->channels &&
cpu_dai->channels != channels) {
dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n",
cpu_dai->channels, channels);
return -EINVAL;
}
}
}
symmetry = cpu_dai->driver->symmetric_samplebits ||
rtd->dai_link->symmetric_samplebits;
symmetry = rtd->dai_link->symmetric_samplebits;
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
symmetry |= cpu_dai->driver->symmetric_samplebits;
for_each_rtd_codec_dai(rtd, i, codec_dai)
symmetry |= codec_dai->driver->symmetric_samplebits;
if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) {
dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n",
cpu_dai->sample_bits, sample_bits);
return -EINVAL;
if (symmetry) {
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (cpu_dai->sample_bits &&
cpu_dai->sample_bits != sample_bits) {
dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n",
cpu_dai->sample_bits, sample_bits);
return -EINVAL;
}
}
}
return 0;
@ -485,14 +515,20 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver;
struct snd_soc_dai_link *link = rtd->dai_link;
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
unsigned int symmetry, i;
symmetry = cpu_driver->symmetric_rates || link->symmetric_rates ||
cpu_driver->symmetric_channels || link->symmetric_channels ||
cpu_driver->symmetric_samplebits || link->symmetric_samplebits;
symmetry = link->symmetric_rates ||
link->symmetric_channels ||
link->symmetric_samplebits;
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
symmetry = symmetry ||
cpu_dai->driver->symmetric_rates ||
cpu_dai->driver->symmetric_channels ||
cpu_dai->driver->symmetric_samplebits;
for_each_rtd_codec_dai(rtd, i, codec_dai)
symmetry = symmetry ||
@ -520,12 +556,12 @@ static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
struct snd_soc_pcm_stream *pcm_codec, *pcm_cpu;
int stream = substream->stream;
int i;
unsigned int bits = 0, cpu_bits;
unsigned int bits = 0, cpu_bits = 0;
for_each_rtd_codec_dai(rtd, i, codec_dai) {
pcm_codec = snd_soc_dai_get_pcm_stream(codec_dai, stream);
@ -537,8 +573,15 @@ static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
bits = max(pcm_codec->sig_bits, bits);
}
pcm_cpu = snd_soc_dai_get_pcm_stream(cpu_dai, stream);
cpu_bits = pcm_cpu->sig_bits;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
pcm_cpu = snd_soc_dai_get_pcm_stream(cpu_dai, stream);
if (pcm_cpu->sig_bits == 0) {
cpu_bits = 0;
break;
}
cpu_bits = max(pcm_cpu->sig_bits, cpu_bits);
}
soc_pcm_set_msb(substream, bits);
soc_pcm_set_msb(substream, cpu_bits);
@ -550,18 +593,46 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
struct snd_pcm_hardware *hw = &runtime->hw;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_pcm_stream *codec_stream;
struct snd_soc_pcm_stream *cpu_stream;
unsigned int chan_min = 0, chan_max = UINT_MAX;
unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX;
unsigned int rate_min = 0, rate_max = UINT_MAX;
unsigned int rates = UINT_MAX;
unsigned int cpu_rate_min = 0, cpu_rate_max = UINT_MAX;
unsigned int rates = UINT_MAX, cpu_rates = UINT_MAX;
u64 formats = ULLONG_MAX;
int stream = substream->stream;
int i;
cpu_stream = snd_soc_dai_get_pcm_stream(rtd->cpu_dai, stream);
/* first calculate min/max only for CPUs in the DAI link */
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
/* first calculate min/max only for CODECs in the DAI link */
/*
* Skip CPUs which don't support the current stream type.
* Otherwise, since the rate, channel, and format values will
* zero in that case, we would have no usable settings left,
* causing the resulting setup to fail.
* At least one CPU should match, otherwise we should have
* bailed out on a higher level, since there would be no
* CPU to support the transfer direction in that case.
*/
if (!snd_soc_dai_stream_valid(cpu_dai,
substream->stream))
continue;
cpu_stream = snd_soc_dai_get_pcm_stream(cpu_dai, stream);
cpu_chan_min = max(cpu_chan_min, cpu_stream->channels_min);
cpu_chan_max = min(cpu_chan_max, cpu_stream->channels_max);
cpu_rate_min = max(cpu_rate_min, cpu_stream->rate_min);
cpu_rate_max = min_not_zero(cpu_rate_max, cpu_stream->rate_max);
formats &= cpu_stream->formats;
cpu_rates = snd_pcm_rate_mask_intersect(cpu_stream->rates,
cpu_rates);
}
/* second calculate min/max only for CODECs in the DAI link */
for_each_rtd_codec_dai(rtd, i, codec_dai) {
/*
@ -589,27 +660,28 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
/*
* chan min/max cannot be enforced if there are multiple CODEC DAIs
* connected to a single CPU DAI, use CPU DAI's directly and let
* connected to CPU DAI(s), use CPU DAI's directly and let
* channel allocation be fixed up later
*/
if (rtd->num_codecs > 1) {
chan_min = cpu_stream->channels_min;
chan_max = cpu_stream->channels_max;
chan_min = cpu_chan_min;
chan_max = cpu_chan_max;
}
hw->channels_min = max(chan_min, cpu_stream->channels_min);
hw->channels_max = min(chan_max, cpu_stream->channels_max);
/* finally find a intersection between CODECs and CPUs */
hw->channels_min = max(chan_min, cpu_chan_min);
hw->channels_max = min(chan_max, cpu_chan_max);
if (hw->formats)
hw->formats &= formats & cpu_stream->formats;
hw->formats &= formats;
else
hw->formats = formats & cpu_stream->formats;
hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
hw->formats = formats;
hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_rates);
snd_pcm_limit_hw_rates(runtime);
hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
hw->rate_min = max(hw->rate_min, cpu_rate_min);
hw->rate_min = max(hw->rate_min, rate_min);
hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max);
hw->rate_max = min_not_zero(hw->rate_max, cpu_rate_max);
hw->rate_max = min_not_zero(hw->rate_max, rate_max);
}
@ -681,7 +753,7 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i;
@ -689,9 +761,11 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
snd_soc_runtime_deactivate(rtd, substream->stream);
snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
snd_soc_dai_shutdown(cpu_dai, substream);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
snd_soc_dai_shutdown(cpu_dai, substream);
for_each_rtd_codec_dai(rtd, i, codec_dai)
snd_soc_dai_shutdown(codec_dai, substream);
@ -726,9 +800,10 @@ 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_component *component;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
const char *codec_dai_name = "multicodec";
const char *cpu_dai_name = "multicpu";
int i, ret = 0;
for_each_rtd_components(rtd, i, component)
@ -751,11 +826,13 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
}
/* startup the audio subsystem */
ret = snd_soc_dai_startup(cpu_dai, substream);
if (ret < 0) {
dev_err(cpu_dai->dev, "ASoC: can't open interface %s: %d\n",
cpu_dai->name, ret);
goto cpu_dai_err;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = snd_soc_dai_startup(cpu_dai, substream);
if (ret < 0) {
dev_err(cpu_dai->dev, "ASoC: can't open interface %s: %d\n",
cpu_dai->name, ret);
goto cpu_dai_err;
}
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
@ -783,34 +860,39 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
if (rtd->num_codecs == 1)
codec_dai_name = rtd->codec_dai->name;
if (rtd->num_cpus == 1)
cpu_dai_name = rtd->cpu_dai->name;
if (soc_pcm_has_symmetry(substream))
runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
ret = -EINVAL;
if (!runtime->hw.rates) {
printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
codec_dai_name, cpu_dai->name);
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);
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);
codec_dai_name, cpu_dai_name);
goto config_err;
}
soc_pcm_apply_msb(substream);
/* 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;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (cpu_dai->active) {
ret = soc_pcm_apply_symmetry(substream, cpu_dai);
if (ret != 0)
goto config_err;
}
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
@ -822,7 +904,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
}
pr_debug("ASoC: %s <-> %s info:\n",
codec_dai_name, cpu_dai->name);
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);
@ -840,7 +922,8 @@ config_err:
for_each_rtd_codec_dai(rtd, i, codec_dai)
snd_soc_dai_shutdown(codec_dai, substream);
cpu_dai_err:
snd_soc_dai_shutdown(cpu_dai, substream);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
snd_soc_dai_shutdown(cpu_dai, substream);
soc_rtd_shutdown(rtd, substream);
rtd_startup_err:
@ -879,7 +962,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret = 0;
@ -911,11 +994,13 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
}
}
ret = snd_soc_dai_prepare(cpu_dai, substream);
if (ret < 0) {
dev_err(cpu_dai->dev,
"ASoC: cpu DAI prepare error: %d\n", ret);
goto out;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = snd_soc_dai_prepare(cpu_dai, substream);
if (ret < 0) {
dev_err(cpu_dai->dev,
"ASoC: cpu DAI prepare error: %d\n", ret);
goto out;
}
}
/* cancel any delayed stream shutdown that is pending */
@ -931,7 +1016,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
for_each_rtd_codec_dai(rtd, i, codec_dai)
snd_soc_dai_digital_mute(codec_dai, 0,
substream->stream);
snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
out:
mutex_unlock(&rtd->card->pcm_mutex);
@ -978,7 +1064,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret = 0;
@ -1042,17 +1128,26 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
snd_soc_dapm_update_dai(substream, &codec_params, codec_dai);
}
ret = snd_soc_dai_hw_params(cpu_dai, substream, params);
if (ret < 0)
goto interface_err;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
/*
* Skip CPUs which don't support the current stream
* type. See soc_pcm_init_runtime_hw() for more details
*/
if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream))
continue;
/* store the parameters for each DAIs */
cpu_dai->rate = params_rate(params);
cpu_dai->channels = params_channels(params);
cpu_dai->sample_bits =
snd_pcm_format_physical_width(params_format(params));
ret = snd_soc_dai_hw_params(cpu_dai, substream, params);
if (ret < 0)
goto interface_err;
snd_soc_dapm_update_dai(substream, params, cpu_dai);
/* store the parameters for each DAI */
cpu_dai->rate = params_rate(params);
cpu_dai->channels = params_channels(params);
cpu_dai->sample_bits =
snd_pcm_format_physical_width(params_format(params));
snd_soc_dapm_update_dai(substream, params, cpu_dai);
}
for_each_rtd_components(rtd, i, component) {
ret = snd_soc_component_hw_params(component, substream, params);
@ -1072,10 +1167,17 @@ out:
component_err:
soc_pcm_components_hw_free(substream, component);
snd_soc_dai_hw_free(cpu_dai, substream);
cpu_dai->rate = 0;
i = rtd->num_cpus;
interface_err:
for_each_rtd_cpu_dai_rollback(rtd, i, cpu_dai) {
if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream))
continue;
snd_soc_dai_hw_free(cpu_dai, substream);
cpu_dai->rate = 0;
}
i = rtd->num_codecs;
codec_err:
@ -1099,7 +1201,7 @@ codec_err:
static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
int i;
@ -1107,10 +1209,12 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
/* clear the corresponding DAIs parameters when going to be inactive */
if (cpu_dai->active == 1) {
cpu_dai->rate = 0;
cpu_dai->channels = 0;
cpu_dai->sample_bits = 0;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (cpu_dai->active == 1) {
cpu_dai->rate = 0;
cpu_dai->channels = 0;
cpu_dai->sample_bits = 0;
}
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
@ -1146,7 +1250,12 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
snd_soc_dai_hw_free(codec_dai, substream);
}
snd_soc_dai_hw_free(cpu_dai, substream);
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream))
continue;
snd_soc_dai_hw_free(cpu_dai, substream);
}
mutex_unlock(&rtd->card->pcm_mutex);
return 0;
@ -1156,7 +1265,7 @@ static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret;
@ -1170,9 +1279,11 @@ static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd)
return ret;
}
ret = snd_soc_dai_trigger(cpu_dai, substream, cmd);
if (ret < 0)
return ret;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = snd_soc_dai_trigger(cpu_dai, substream, cmd);
if (ret < 0)
return ret;
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
ret = snd_soc_dai_trigger(codec_dai, substream, cmd);
@ -1187,7 +1298,7 @@ static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret;
@ -1197,9 +1308,11 @@ static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd)
return ret;
}
ret = snd_soc_dai_trigger(cpu_dai, substream, cmd);
if (ret < 0)
return ret;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = snd_soc_dai_trigger(cpu_dai, substream, cmd);
if (ret < 0)
return ret;
}
for_each_rtd_components(rtd, i, component) {
ret = snd_soc_component_trigger(component, substream, cmd);
@ -1240,7 +1353,7 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret;
@ -1250,9 +1363,11 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
return ret;
}
ret = snd_soc_dai_bespoke_trigger(cpu_dai, substream, cmd);
if (ret < 0)
return ret;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = snd_soc_dai_bespoke_trigger(cpu_dai, substream, cmd);
if (ret < 0)
return ret;
}
return 0;
}
@ -1264,12 +1379,13 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
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_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t offset = 0;
snd_pcm_sframes_t delay = 0;
snd_pcm_sframes_t codec_delay = 0;
snd_pcm_sframes_t cpu_delay = 0;
int i;
/* clearing the previous total delay */
@ -1280,7 +1396,11 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
/* base delay if assigned in pointer callback */
delay = runtime->delay;
delay += snd_soc_dai_delay(cpu_dai, substream);
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
cpu_delay = max(cpu_delay,
snd_soc_dai_delay(cpu_dai, substream));
}
delay += cpu_delay;
for_each_rtd_codec_dai(rtd, i, codec_dai) {
codec_delay = max(codec_delay,
@ -1403,13 +1523,15 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
if (!be->dai_link->no_pcm)
continue;
w = snd_soc_dai_get_widget(be->cpu_dai, stream);
for_each_rtd_cpu_dai(be, i, dai) {
w = snd_soc_dai_get_widget(dai, stream);
dev_dbg(card->dev, "ASoC: try BE : %s\n",
w ? w->name : "(not set)");
dev_dbg(card->dev, "ASoC: try BE : %s\n",
w ? w->name : "(not set)");
if (w == widget)
return be;
if (w == widget)
return be;
}
for_each_rtd_codec_dai(be, i, dai) {
w = snd_soc_dai_get_widget(dai, stream);
@ -1462,6 +1584,12 @@ int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
struct snd_soc_dai *cpu_dai = fe->cpu_dai;
int paths;
if (fe->num_cpus > 1) {
dev_err(fe->dev,
"%s doesn't support Multi CPU yet\n", __func__);
return -EINVAL;
}
/* get number of valid DAI paths and their widgets */
paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list,
dpcm_end_walk_at_be);
@ -1492,10 +1620,18 @@ static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
unsigned int i;
/* is there a valid CPU DAI widget for this BE */
widget = snd_soc_dai_get_widget(dpcm->be->cpu_dai, stream);
do_prune = 1;
for_each_rtd_cpu_dai(dpcm->be, i, dai) {
widget = snd_soc_dai_get_widget(dai, stream);
/* prune the BE if it's no longer in our active list */
if (widget && widget_in_list(list, widget))
/*
* The BE is pruned only if none of the cpu_dai
* widgets are in the active list.
*/
if (widget && widget_in_list(list, widget))
do_prune = 0;
}
if (!do_prune)
continue;
/* is there a valid CODEC DAI widget for this BE */
@ -1792,11 +1928,24 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *be = dpcm->be;
struct snd_soc_pcm_stream *codec_stream;
struct snd_soc_pcm_stream *cpu_stream;
struct snd_soc_dai *dai;
int i;
cpu_stream = snd_soc_dai_get_pcm_stream(be->cpu_dai, stream);
for_each_rtd_cpu_dai(be, i, dai) {
/*
* Skip CPUs which don't support the current stream
* type. See soc_pcm_init_runtime_hw() for more details
*/
if (!snd_soc_dai_stream_valid(dai, stream))
continue;
*channels_min = max(*channels_min, cpu_stream->channels_min);
*channels_max = min(*channels_max, cpu_stream->channels_max);
cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream);
*channels_min = max(*channels_min,
cpu_stream->channels_min);
*channels_max = min(*channels_max,
cpu_stream->channels_max);
}
/*
* chan min/max cannot be enforced if there are multiple CODEC
@ -1837,11 +1986,22 @@ static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai;
int i;
cpu_stream = snd_soc_dai_get_pcm_stream(be->cpu_dai, stream);
for_each_rtd_cpu_dai(be, i, dai) {
/*
* Skip CPUs which don't support the current stream
* type. See soc_pcm_init_runtime_hw() for more details
*/
if (!snd_soc_dai_stream_valid(dai, stream))
continue;
*rate_min = max(*rate_min, cpu_stream->rate_min);
*rate_max = min_not_zero(*rate_max, cpu_stream->rate_max);
*rates = snd_pcm_rate_mask_intersect(*rates, cpu_stream->rates);
cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream);
*rate_min = max(*rate_min, cpu_stream->rate_min);
*rate_max = min_not_zero(*rate_max,
cpu_stream->rate_max);
*rates = snd_pcm_rate_mask_intersect(*rates,
cpu_stream->rates);
}
for_each_rtd_codec_dai(be, i, dai) {
/*
@ -1866,13 +2026,24 @@ static void dpcm_set_fe_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;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai_driver *cpu_dai_drv;
int i;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
else
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
/*
* Skip CPUs which don't support the current stream
* type. See soc_pcm_init_runtime_hw() for more details
*/
if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream))
continue;
cpu_dai_drv = cpu_dai->driver;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
else
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
}
dpcm_runtime_merge_format(substream, &runtime->hw.formats);
dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min,
@ -1909,18 +2080,21 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
{
struct snd_soc_dpcm *dpcm;
struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai;
struct snd_soc_dai *fe_cpu_dai;
int err;
int i;
/* apply symmetry for FE */
if (soc_pcm_has_symmetry(fe_substream))
fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
/* Symmetry only applies if we've got an active stream. */
if (fe_cpu_dai->active) {
err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
if (err < 0)
return err;
for_each_rtd_cpu_dai (fe, i, fe_cpu_dai) {
/* Symmetry only applies if we've got an active stream. */
if (fe_cpu_dai->active) {
err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
if (err < 0)
return err;
}
}
/* apply symmetry for BE */
@ -1930,6 +2104,7 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
snd_soc_dpcm_get_substream(be, stream);
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
int i;
/* A backend may not have the requested substream */
@ -1944,11 +2119,13 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
/* Symmetry only applies if we've got an active stream. */
if (rtd->cpu_dai->active) {
err = soc_pcm_apply_symmetry(fe_substream,
rtd->cpu_dai);
if (err < 0)
return err;
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
if (cpu_dai->active) {
err = soc_pcm_apply_symmetry(fe_substream,
cpu_dai);
if (err < 0)
return err;
}
}
for_each_rtd_codec_dai(rtd, i, codec_dai) {
@ -2718,6 +2895,12 @@ static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new)
int count, paths;
int ret;
if (fe->num_cpus > 1) {
dev_err(fe->dev,
"%s doesn't support Multi CPU yet\n", __func__);
return -EINVAL;
}
if (!fe->dai_link->dynamic)
return 0;
@ -2863,7 +3046,7 @@ static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
{
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_component *component;
struct snd_pcm *pcm;
char new_name[64];
@ -2881,6 +3064,16 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
for_each_rtd_codec_dai(rtd, i, codec_dai) {
if (rtd->num_cpus == 1) {
cpu_dai = rtd->cpu_dais[0];
} else if (rtd->num_cpus == rtd->num_codecs) {
cpu_dai = rtd->cpu_dais[i];
} else {
dev_err(rtd->card->dev,
"N cpus to M codecs link is not supported yet\n");
return -EINVAL;
}
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
snd_soc_dai_stream_valid(cpu_dai, cpu_playback))
playback = 1;
@ -3001,7 +3194,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
out:
dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
(rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
cpu_dai->name);
(rtd->num_cpus > 1) ? "multicpu" : rtd->cpu_dai->name);
return ret;
}