[PATCH] Add quirk to enable Avid Mbox 3 support

[Takashi Iwai]

On Tue, 16 Aug 2022 02:44:27 +0200,
mbarriolinares wrote:
> 
> > Hi all,
> > 
> > I believe these are the right emails to send this patch to,
> > but if I've missed something please let me know.
> > 
> > This patch enables the Avid Mbox 3 audio interface to
> > be used through ALSA.  It locks the device at a 48khz sample rate.
> > Then it mutes and raises the appropriate channels/inputs to allow
> > for expected functionality.
> > 
> > Thanks for your time.
> 
> Thanks Conner for taking the time to write and submit this!
> 
> I have an MBox 3 (USB) and I've tested the patch:
> 
> 1. Have not tested S/PDIF i/o because I don't have hardware to plug it.
> 2. Output is in mono. It seems the monitor outputs work only in MONO. 
>    (with and without the front mono button switched on or off).
> 3. Haven't tested if Headphones output work in stereo because I don't
>    have hardware for testing.
> 3. Inputs work great. 
> 
> I'll get a stereo 1/4'' jack to 3.5mm for testing the headphones out.
> You can contact me directly if needed.

It seems that I overlooked this patch some how.

Through a quick glance, the patch needs the proper Signed-off-by line,
at least, for merging to the upstream.  Also, simple memset() with
zero could be used for clearing the com_buf.  Otherwise, it's fine to
apply as long as the stuff works more or less (at least improving
things).


thanks,

Takashi