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ASoC: dapm: Add support for multi-CODEC CODEC to CODEC links 

Currently multi-CODEC is not supported on CODEC to CODEC links.
There are common applications where this would be useful, such
as connecting two mono amplifiers to an audio CODEC. Adding
support simply requires an update of snd_soc_dai_link_event
to loop over the attached CODEC DAIs.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2018-09-05 15:21:01 +01:00 committed by Mark Brown
parent 778ff5bb86
commit 4a75aae17b
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 70 additions and 53 deletions
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123
sound/soc/soc-dapm.c
View File

@ -3614,7 +3614,7 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_dapm_path *source_p, *sink_p;
struct snd_soc_dapm_path *path;
struct snd_soc_dai *source, *sink;
struct snd_soc_pcm_runtime *rtd = w->priv;
const struct snd_soc_pcm_stream *config = w->params + w->params_select;
@ -3629,17 +3629,6 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
return -EINVAL;
/* We only support a single source and sink, pick the first */
source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT],
struct snd_soc_dapm_path,
list_node[SND_SOC_DAPM_DIR_OUT]);
sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN],
struct snd_soc_dapm_path,
list_node[SND_SOC_DAPM_DIR_IN]);
source = source_p->source->priv;
sink = sink_p->sink->priv;
/* Be a little careful as we don't want to overflow the mask array */
if (config->formats) {
fmt = ffs(config->formats) - 1;
@ -3681,59 +3670,90 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
substream.stream = SNDRV_PCM_STREAM_CAPTURE;
if (source->driver->ops->startup) {
ret = source->driver->ops->startup(&substream, source);
if (ret < 0) {
dev_err(source->dev,
"ASoC: startup() failed: %d\n", ret);
goto out;
snd_soc_dapm_widget_for_each_source_path(w, path) {
source = path->source->priv;
if (source->driver->ops->startup) {
ret = source->driver->ops->startup(&substream,
source);
if (ret < 0) {
dev_err(source->dev,
"ASoC: startup() failed: %d\n",
ret);
goto out;
}
source->active++;
}
source->active++;
ret = soc_dai_hw_params(&substream, params, source);
if (ret < 0)
goto out;
}
ret = soc_dai_hw_params(&substream, params, source);
if (ret < 0)
goto out;
substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
if (sink->driver->ops->startup) {
ret = sink->driver->ops->startup(&substream, sink);
if (ret < 0) {
dev_err(sink->dev,
"ASoC: startup() failed: %d\n", ret);
goto out;
snd_soc_dapm_widget_for_each_sink_path(w, path) {
sink = path->sink->priv;
if (sink->driver->ops->startup) {
ret = sink->driver->ops->startup(&substream,
sink);
if (ret < 0) {
dev_err(sink->dev,
"ASoC: startup() failed: %d\n",
ret);
goto out;
}
sink->active++;
}
sink->active++;
ret = soc_dai_hw_params(&substream, params, sink);
if (ret < 0)
goto out;
}
ret = soc_dai_hw_params(&substream, params, sink);
if (ret < 0)
goto out;
break;
case SND_SOC_DAPM_POST_PMU:
ret = snd_soc_dai_digital_mute(sink, 0,
SNDRV_PCM_STREAM_PLAYBACK);
if (ret != 0 && ret != -ENOTSUPP)
dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
ret = 0;
snd_soc_dapm_widget_for_each_sink_path(w, path) {
sink = path->sink->priv;
ret = snd_soc_dai_digital_mute(sink, 0,
SNDRV_PCM_STREAM_PLAYBACK);
if (ret != 0 && ret != -ENOTSUPP)
dev_warn(sink->dev,
"ASoC: Failed to unmute: %d\n", ret);
ret = 0;
}
break;
case SND_SOC_DAPM_PRE_PMD:
ret = snd_soc_dai_digital_mute(sink, 1,
SNDRV_PCM_STREAM_PLAYBACK);
if (ret != 0 && ret != -ENOTSUPP)
dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
ret = 0;
snd_soc_dapm_widget_for_each_sink_path(w, path) {
sink = path->sink->priv;
source->active--;
if (source->driver->ops->shutdown) {
substream.stream = SNDRV_PCM_STREAM_CAPTURE;
source->driver->ops->shutdown(&substream, source);
ret = snd_soc_dai_digital_mute(sink, 1,
SNDRV_PCM_STREAM_PLAYBACK);
if (ret != 0 && ret != -ENOTSUPP)
dev_warn(sink->dev,
"ASoC: Failed to mute: %d\n", ret);
ret = 0;
}
sink->active--;
if (sink->driver->ops->shutdown) {
substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
sink->driver->ops->shutdown(&substream, sink);
snd_soc_dapm_widget_for_each_source_path(w, path) {
source = path->source->priv;
source->active--;
if (source->driver->ops->shutdown) {
substream.stream = SNDRV_PCM_STREAM_CAPTURE;
source->driver->ops->shutdown(&substream,
source);
}
}
snd_soc_dapm_widget_for_each_sink_path(w, path) {
sink = path->sink->priv;
sink->active--;
if (sink->driver->ops->shutdown) {
substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
sink->driver->ops->shutdown(&substream, sink);
}
}
break;
@ -4043,9 +4063,6 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
int i;
if (rtd->dai_link->params) {
if (rtd->num_codecs > 1)
dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
playback_cpu = cpu_dai->capture_widget;
capture_cpu = cpu_dai->playback_widget;
} else {