diff options
Diffstat (limited to 'include/sound/dmaengine_pcm.h')
| -rw-r--r-- | include/sound/dmaengine_pcm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index 67be2445941a..e3481eebdd98 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -118,6 +118,8 @@ void snd_dmaengine_pcm_set_config_from_dai_data( * PCM substream. Will be called from the PCM drivers hwparams callback. * @compat_request_channel: Callback to request a DMA channel for platforms * which do not use devicetree. + * @process: Callback used to apply processing on samples transferred from/to + * user space. * @compat_filter_fn: Will be used as the filter function when requesting a * channel for platforms which do not use devicetree. The filter parameter * will be the DAI's DMA data. @@ -140,6 +142,9 @@ struct snd_dmaengine_pcm_config { struct dma_chan *(*compat_request_channel)( struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream); + int (*process)(struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + void *buf, unsigned long bytes); dma_filter_fn compat_filter_fn; struct device *dma_dev; const char *chan_names[SNDRV_PCM_STREAM_LAST + 1]; @@ -161,4 +166,6 @@ int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config); +#define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm" + #endif |