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.