ALSA: usb-audio: Adding mixer controls to Mbox3

[Takashi Iwai]

On Wed, 01 May 2024 16:31:35 +0200,
Manu wrote:
> 
> Thank you for all your help, Takashi!
> 
> I would like to add the hardware mixer controls for Mbox3.
> I have already identified every control in the function "mbox3_setup_defaults"
> of "quirks.c", but I am unsure about the structure needed to make the controls
> appear in alsamixer (further investigation is required). I would appreciate any
> help you or anyone else can provide.

I believe it'd be helpful if you can show some mock up or any examples
you wanted to try (or had in your head).  If the question was about
the complexity or too many code to add there, you can split to another
file, too.


thanks,

Takashi

> 
> Manuel Barrio Linares
> 
> 
> On Wed, May 1, 2024 at 4:55 AM Takashi Iwai <tiwai at suse.de> wrote:
> >
> > On Tue, 30 Apr 2024 19:10:18 +0200,
> > Manuel Barrio Linares wrote:
> > >
> > > This adds support for all sample rates supported by the
> > > hardware,Digidesign Mbox 3 supports: {44100, 48000, 88200, 96000}
> > >
> > > Fixes syncing clock issues that presented as pops. To test this, without
> > > this patch playing 440hz tone produces pops.
> > >
> > > Clock is now synced between playback and capture interfaces so no more
> > > latency drift issue when using pipewire pro-profile.
> > > (https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3900)
> > >
> > > Signed-off-by: Manuel Barrio Linares <mbarriolinares at gmail.com>
> >
> > Applied to for-next branch now.  Thanks!
> >
> >
> > Takashi