Re: [PATCH v4] ALSA: usb-audio: Add quirks for Arturia AF16Rig

[Phil Willoughby <willerz@gmail.com>]

On Saturday, 28 March 2026 13:17:21 Greenwich Mean Time you wrote:
> On Sat, 28 Mar 2026 12:08:41 +0100,
> Phil Willoughby wrote:
> > 2. Add the external clock quirks and locally test that it doesn't break
> > anything for people who don't have the external clocks
> > 3. Wrap the external clock quirks in #if 0 and a comment that they are
> > disabled because they haven't been tested.
> > 4. This will be marked signed-off but not tested-by me.
> 
> Hm, a better approach would be rather a creation of a mixer element to
> switch the clock source, I suppose.  But it'll be more complex, of
> course.

The standard mixer code path seems to be creating that element already:

$ amixer -c AF16Rig contents
numid=2,iface=CARD,name='ARTURIA ADAT Clock Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=1,iface=CARD,name='ARTURIA Internal Clock Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=3,iface=CARD,name='ARTURIA WORD Clock Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=4,iface=MIXER,name='ARTURIA Clock Selector Clock Source'
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'ARTURIA Internal Clock'
  ; Item #1 'ARTURIA ADAT Clock'
  ; Item #2 'ARTURIA WORD Clock'
  : values=0

I also see it in the alsamixer UI. I tried switching it, and it does
communicate that change to the AF16Rig. Of course then it doesn't
work because I have nothing attached as an external clock.