[alsa-devel] What is the meaning of the mask values in the pcmhw constraints struct ?

Mark Brown broonie at opensource.wolfsonmicro.com
Sat Oct 24 16:23:57 CEST 2009

On Fri, Oct 23, 2009 at 02:39:58PM +0100, Neil Jones wrote:

> Cheers, I wasn't setting the 'SNDRV_PCM_INFO_MMAP' in my
> snd_pcm_hardware description, because I didn't have MMAP support, I have
> now added MMAP support to my driver to resolve this issue, although I
> thought ALSA/aplay supported drivers without MMAP support ?

It should be supportable, yes, although to be honest I've never actually
looked at hardware that can't deal with mmap() so I don't know off hte
top of my head what the required setup is.

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