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| author | Shengjiu Wang <shengjiu.wang@nxp.com> | 2020-06-12 15:37:49 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-06-12 14:18:02 +0100 |
| commit | a9a21e1eafc94b79502cab8272b392f7f63ef7bb (patch) | |
| tree | 58cc082b690961e0ea2f2e4b5b2b54723eb659e3 /include/sound/dmaengine_pcm.h | |
| parent | 6fbea6b6a838f9aa941fe53a3637fd8d8aab1eba (diff) | |
| download | linux-a9a21e1eafc94b79502cab8272b392f7f63ef7bb.tar.bz2 | |
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: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/429c6ae1f3c5b47eb893f475d531d71cdcfe34c0.1591947428.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/dmaengine_pcm.h')
| -rw-r--r-- | include/sound/dmaengine_pcm.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index b65220685920..8c5e38180fb0 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -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 |