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ASoC: meson: axg-tdm-interface: manage formatters in trigger

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So far, the formatters have been reset/enabled using the .prepare()
callback. This was done in this callback because walking the formatters use
a mutex. A mutex is used because formatter handling require dealing
possibly slow clock operation.

With the support of non-atomic, .trigger() callback may be used which also
allows to properly enable and disable formatters on start but also
pause/resume.

This solve a random shift on TDMIN as well repeated samples on for TDMOUT.

Fixes: d60e4f1e4be5 ("ASoC: meson: add tdm interface driver")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20240426152946.3078805-4-jbrunet@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet 2024-04-26 17:29:40 +02:00 committed by Mark Brown
parent dcba52ace7
commit f949ed458a
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GPG Key ID: 24D68B725D5487D0
1 changed files with 19 additions and 15 deletions
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34
sound/soc/meson/axg-tdm-interface.c
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@ -349,26 +349,31 @@ static int axg_tdm_iface_hw_params(struct snd_pcm_substream *substream,
return 0;
}
static int axg_tdm_iface_hw_free(struct snd_pcm_substream *substream,
static int axg_tdm_iface_trigger(struct snd_pcm_substream *substream,
int cmd,
struct snd_soc_dai *dai)
{
struct axg_tdm_stream *ts = snd_soc_dai_get_dma_data(dai, substream);
struct axg_tdm_stream *ts =
snd_soc_dai_get_dma_data(dai, substream);
/* Stop all attached formatters */
axg_tdm_stream_stop(ts);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
axg_tdm_stream_start(ts);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_STOP:
axg_tdm_stream_stop(ts);
break;
default:
return -EINVAL;
}
return 0;
}
static int axg_tdm_iface_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct axg_tdm_stream *ts = snd_soc_dai_get_dma_data(dai, substream);
/* Force all attached formatters to update */
return axg_tdm_stream_reset(ts);
}
static int axg_tdm_iface_remove_dai(struct snd_soc_dai *dai)
{
int stream;
@ -412,8 +417,7 @@ static const struct snd_soc_dai_ops axg_tdm_iface_ops = {
.set_fmt = axg_tdm_iface_set_fmt,
.startup = axg_tdm_iface_startup,
.hw_params = axg_tdm_iface_hw_params,
.prepare = axg_tdm_iface_prepare,
.hw_free = axg_tdm_iface_hw_free,
.trigger = axg_tdm_iface_trigger,
};
/* TDM Backend DAIs */