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ASoC: soc-component: Add snd_soc_pcm_component_ack

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Add snd_soc_pcm_component_ack back, which can be used to get an
updated buffer pointer in the platform driver.
On Asymmetric multiprocessor, this pointer can be sent to Cortex-M
core for audio processing.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1615516725-4975-2-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2021-03-12 10:38:40 +08:00 committed by Mark Brown
parent 3f994c2586
commit 8bdfc0455e
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
3 changed files with 19 additions and 0 deletions
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3
include/sound/soc-component.h
View file

@ -146,6 +146,8 @@ struct snd_soc_component_driver {
int (*mmap)(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct vm_area_struct *vma);
int (*ack)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
const struct snd_compress_ops *compress_ops;
@ -498,5 +500,6 @@ int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
void *stream);
void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
void *stream, int rollback);
int snd_soc_pcm_component_ack(struct snd_pcm_substream *substream);
#endif /* __SOC_COMPONENT_H */

14
sound/soc/soc-component.c
View file

@ -1212,3 +1212,17 @@ void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
soc_component_mark_pop(component, stream, pm);
}
}
int snd_soc_pcm_component_ack(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component;
int i;
/* FIXME: use 1st pointer */
for_each_rtd_components(rtd, i, component)
if (component->driver->ack)
return component->driver->ack(component, substream);
return 0;
}

2
sound/soc/soc-pcm.c
View file

@ -2772,6 +2772,8 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
rtd->ops.page = snd_soc_pcm_component_page;
if (drv->mmap)
rtd->ops.mmap = snd_soc_pcm_component_mmap;
if (drv->ack)
rtd->ops.ack = snd_soc_pcm_component_ack;
}
if (playback)