From: Markus Armbruster <armbru@redhat.com>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: Onboard audio devices and -audiodev none
Date: Mon, 18 May 2020 10:19:26 +0200 [thread overview]
Message-ID: <87r1vheju9.fsf@dusky.pond.sub.org> (raw)
In-Reply-To: <20200518071429.vz6tpf32bza3rqj3@sirius.home.kraxel.org> (Gerd Hoffmann's message of "Mon, 18 May 2020 09:14:29 +0200")
Gerd Hoffmann <kraxel@redhat.com> writes:
> On Mon, May 18, 2020 at 06:59:01AM +0200, Markus Armbruster wrote:
>> Gerd Hoffmann <kraxel@redhat.com> writes:
>>
>> > On Fri, May 15, 2020 at 09:06:20AM +0200, Markus Armbruster wrote:
>> >> Watch this:
>> >>
>> >> $ aarch64-softmmu/qemu-system-aarch64 -S -nodefaults -accel qtest -display none -M vexpress-a15 -audiodev none,id=foo
>> >> audio: Device lm4549: audiodev default parameter is deprecated, please specify audiodev=foo
>> >>
>> >> I did, didn't I?
>> >
>> > https://patchwork.ozlabs.org/project/qemu-devel/patch/20200429110214.29037-13-kraxel@redhat.com/
>>
>> I don't immediately understand how that addresses my issue, but I trust
>> it does :)
>
> Well, not the patch itself, it handles pcspk only. But we could use the
> same naming convention for all other onboard audio devices too: Have
> them try lookup a "onboard" audio backend and use that if it exists.
> Don't initialize if not.
When an onboard device is an integral part of the physical board we're
emulating, then it should be connected to a suitable null backend when
we don't have a better default.
> Not fully sure this is a good plan, thats why the patch is tagged 'RfC'.
> Better idea are welcome. In the blockdev world floppy has a similar
> problem, is there any way to link floppy and blockdev without -global
> isa-fdc.driveA=... meanwhile?
Yes, but it won't help with onboard sound: -device floppy just works
now. The general problem of configuring onboard devices still needs a
solution. This recent thread has some ideas:
Subject: Configuring onboard devices (was: Failing property setters + hardwired devices + -global = a bad day)
Date: Thu, 30 Apr 2020 12:03:12 +0200 (2 weeks, 3 days, 22 hours ago)
Message-ID: <87tv11e1en.fsf_-_@dusky.pond.sub.org>
https://lists.nongnu.org/archive/html/qemu-devel/2020-04/msg05468.html
prev parent reply other threads:[~2020-05-18 8:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 7:06 Onboard audio devices and -audiodev none Markus Armbruster
2020-05-15 8:34 ` Gerd Hoffmann
2020-05-18 4:59 ` Markus Armbruster
2020-05-18 7:14 ` Gerd Hoffmann
2020-05-18 8:19 ` Markus Armbruster [this message]
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