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Re: qemu 4.2.0 audiodev soundhw

From: Gerd Hoffmann
Subject: Re: qemu 4.2.0 audiodev soundhw
Date: Thu, 23 Apr 2020 10:00:11 +0200

On Wed, Apr 22, 2020 at 04:13:29PM +0100, Peter Maydell wrote:
> On Wed, 22 Apr 2020 at 15:04, Gerd Hoffmann <address@hidden> wrote:
> > 'pcspk' is the by far most tricky one.  The device is present
> > unconditionally, -soundhw pcspk only triggers the registration
> > with the audiodev backend.
> >
> > 'hda' creates two devices (intel-hda + hda-duplex), so it is an actual
> > shortcut compared to the longer -device version.
> >
> > Every other device basically is pci_create_simple(...) or
> > isa_create_simple(...), even the names are identical, so "-soundhw sb16"
> > translates to "-device sb16" etc.
> What about embedded board sound devices (eg the pl041 on the
> arm vexpress/versatilepb/realview boards) ?

Probably the sound device is present unconditionally, at least they
don't register for -soundhw.

But, yes, they also need some way to figure the audiodev they should
use.  Hmm.  One option I see is allowing to mark an audiodev as backend
for onboard audio devices, either using an option ...

        -audiodev pa,onboard=true

... or by naming convention:

        -audiodev pa,id=onboard


take care,

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