Unverified Commit a9a21e1e authored by Shengjiu Wang's avatar Shengjiu Wang Committed by Mark Brown
Browse files

ASoC: dmaengine_pcm: export soc_component_to_pcm 



In DPCM case, Front-End needs to get the dma chan which has
been requested by Back-End and reuse it.

Signed-off-by: default avatarShengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: default avatarNicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/429c6ae1f3c5b47eb893f475d531d71cdcfe34c0.1591947428.git.shengjiu.wang@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 6fbea6b6

include/sound/dmaengine_pcm.h

+11 −0
Original line number Diff line number Diff line
@@ -161,4 +161,15 @@ int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream, 


#define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm"



struct dmaengine_pcm {

	struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];

	const struct snd_dmaengine_pcm_config *config;

	struct snd_soc_component component;

	unsigned int flags;

};



static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p)

{

	return container_of(p, struct dmaengine_pcm, component);

}

#endif

sound/soc/soc-generic-dmaengine-pcm.c

+0 −12
Original line number Diff line number Diff line
@@ -21,18 +21,6 @@ 
 */

#define SND_DMAENGINE_PCM_FLAG_NO_RESIDUE BIT(31)



struct dmaengine_pcm {

	struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];

	const struct snd_dmaengine_pcm_config *config;

	struct snd_soc_component component;

	unsigned int flags;

};



static struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p)

{

	return container_of(p, struct dmaengine_pcm, component);

}



static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm,

	struct snd_pcm_substream *substream)

{

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