My 8610 ASoC driver has this:
static const struct snd_pcm_hardware fsl_dma_hardware = {
.info = SNDRV_PCM_INFO_INTERLEAVED,
This means that MMAP is not enabled.
I understand what MMAP is, but not from an ALSA driver perspective. If I change
the above line to this:
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID,
what does ALSA do differently? Do I need to define any new functions? From an
application perspective, what is different?
Also, does DMIX need MMAP support?
--
Timur Tabi
Linux kernel developer at Freescale
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