SND_DMAENGINE_PCM_OP(9)                      PCM API                      SND_DMAENGINE_PCM_OP(9)



NAME
       snd_dmaengine_pcm_open - Open a dmaengine based PCM substream

SYNOPSIS
       int snd_dmaengine_pcm_open(struct snd_pcm_substream * substream, struct dma_chan * chan);

ARGUMENTS
       substream
           PCM substream

       chan
           DMA channel to use for data transfers

DESCRIPTION
       Returns 0 on success, a negative error code otherwise.

       The function should usually be called from the pcm open callback. Note that this function
       will use private_data field of the substream's runtime. So it is not available to your pcm
       driver implementation.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   SND_DMAENGINE_PCM_OP(9)