[alsa-devel] [RFC 2/2] ASoC: Add MICFIL SoC Digital Audio Interface driver.

[Mark Brown]

On Fri, Dec 14, 2018 at 02:09:00PM -0600, Pierre-Louis Bossart wrote:

> There's no mention of any buffer so it's likely plain vanilla VAD here.
> We've seen two choices to warn userspace of a acoustic event, either use a
> uevent or a kcontrol. I believe we ended-up chosing the latter on the Intel
> side in the past and that was also the plan for SOF.

It sounded like there were some separate audio streams somewhere along
the line, it wasn't super clear if that just went into a DSP that did
the VAD and wasn't visible to the rest of the system or if it's
something the system can see.  Generally we have gone for kcontrols for
event signalling.

> In terms of configurations for the PDM we have completely different settings
> since we pass explicit coefficients while this solution passes qualifiers
> (cut-off, quality, etc), not sure if there is any point in trying to unify
> those parameters.

Yes, I don't think the specific parameters are going to be joined up any
time soon - it's more the overall shape of the solution.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://mailman.alsa-project.org/pipermail/alsa-devel/attachments/20181217/d3aa06e4/attachment.sig>