Unverified Commit 8bdfc045 authored by Shengjiu Wang's avatar Shengjiu Wang Committed by Mark Brown
Browse files

ASoC: soc-component: Add snd_soc_pcm_component_ack 



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: default avatarShengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1615516725-4975-2-git-send-email-shengjiu.wang@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 3f994c25

include/sound/soc-component.h

+3 −0
Original line number Diff line number Diff line
@@ -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 */

sound/soc/soc-component.c

+14 −0
Original line number Diff line number Diff line
@@ -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;

}

sound/soc/soc-pcm.c

+2 −0
Original line number Diff line number Diff line
@@ -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)