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Subject[PATCH v2 1/7] ASoC: soc-component: Add snd_soc_pcm_component_ack
Date
Add snd_soc_pcm_component_ack back, which can be used to get updated
buffer pointer in 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>
---
include/sound/soc-component.h | 3 +++
sound/soc/soc-component.c | 14 ++++++++++++++
sound/soc/soc-pcm.c | 2 ++
3 files changed, 19 insertions(+)

diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h
index 5b47768222b7..2dc8c7e3d1a6 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -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 */
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index 159bf88b9f8c..a9fbb2d26412 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -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;
+}
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index b79f064887d4..605acec48971 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2830,6 +2830,8 @@ 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)
--
2.27.0
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