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Would there be virtio-audio spec in future for clean audio interface

virtio-dev vlse 4 participants 6 messages Mar 24, 2019 – Mar 26, 2019 1 message not in the archive

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vlse

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#1 lore raw

Hello,

Would there be virtio-audio spec in future for clean audio interface?

Projectacrn.github.io provides one virtio-audio interface for automotive sytems.

Regards,
Veera

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#2 lore raw
Quoted 3 lines · vlse

Would there be virtio-audio spec in future for clean audio interface?

Projectacrn.github.io provides one virtio-audio interface for automotive sytems.

That's interesting to know. It would probably be up to projectacrn to submit virtio-audio to the committee, or at least reserve the device number. Do you have a contact at projectacrn that can help with this?

Thanks,

Paolo

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author
#3 lore raw
Quoted 5 lines · Paolo Bonzini
Quoted 3 lines · vlse

Would there be virtio-audio spec in future for clean audio interface?

Projectacrn.github.io provides one virtio-audio interface for automotive sytems.

Quoted 7 lines

That's interesting to know. It would probably be up to projectacrn to submit virtio-audio to the committee, or at least reserve the device number. Do you have a contact at projectacrn that can help with this?

Thanks,

Paolo

Hi,

No I don't have a contact with Project ACRN.

ACRN is a Linux Foundation Project. Initially it was by Intel. It is a hypervisor for embedded devices.
Website is https://projectacrn.org/.

Their supported virtio-audio details:
Vendor ID: 0x8086
Device ID: 0x8603
Subvendor ID: 0x8086
Subdevice ID: 0xFFFD

Another implementation from another developer from Intel.
Website: https://patchwork.freedesktop.org/patch/174013/
Author: Luo Xionghu <[email protected]>

Comments by Author: this patch only add audio device pci registration.
need add audio part to call audio Backend driver later.

Regards,
Veera

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#4 lore raw
Quoted 15 lines · vlse

On Mon, Mar 25, 2019 at 02:13:51PM +0100, Paolo Bonzini wrote:
Hi,

No I don't have a contact with Project ACRN.

ACRN is a Linux Foundation Project. Initially it was by Intel. It is a hypervisor for embedded devices.
Website is https://projectacrn.org/.

Their supported virtio-audio details:
Vendor ID: 0x8086
Device ID: 0x8603
Subvendor ID: 0x8086
Subdevice ID: 0xFFFD

Quoted 6 lines

Another implementation from another developer from Intel.
Website: https://patchwork.freedesktop.org/patch/174013/
Author: Luo Xionghu <[email protected]>

Comments by Author: this patch only add audio device pci registration.
need add audio part to call audio Backend driver later.

Thanks, that's useful. Xionghu, is there a public spec for virtio-audio, and/or does Intel intend to contribute it to the virtio specification?

Unfortunately device id 21 is already taken. I'll send a patch to the specification that reserves id 25 for virtio-audio.

Thanks,

Paolo

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#5 lore raw

CC acrn community.

There are quite some new virtio devices (audio, gpio, i2c, etc) included in acrn project, as required in automotive/embedded usages. I know they have plan to upstream those bits, and now might be a good time to talk about the plan. :-)

Thanks
Kevin

Quoted 46 lines

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Paolo Bonzini
Sent: Tuesday, March 26, 2019 5:39 PM
To: vlse <[email protected]>
Cc: [email protected]; [email protected]
Subject: Re: [virtio-dev] Would there be virtio-audio spec in future for clean audio interface

Quoted 15 lines · vlse

On Mon, Mar 25, 2019 at 02:13:51PM +0100, Paolo Bonzini wrote:
Hi,

No I don't have a contact with Project ACRN.

ACRN is a Linux Foundation Project. Initially it was by Intel. It is a hypervisor for embedded devices.
Website is https://projectacrn.org/.

Their supported virtio-audio details:
Vendor ID: 0x8086
Device ID: 0x8603
Subvendor ID: 0x8086
Subdevice ID: 0xFFFD

Quoted 6 lines

Another implementation from another developer from Intel.
Website: https://patchwork.freedesktop.org/patch/174013/
Author: Luo Xionghu <[email protected]>

Comments by Author: this patch only add audio device pci registration.
need add audio part to call audio Backend driver later.

Thanks, that's useful. Xionghu, is there a public spec for virtio-audio, and/or does Intel intend to contribute it to the virtio specification?

Unfortunately device id 21 is already taken. I'll send a patch to the specification that reserves id 25 for virtio-audio.

Thanks,

Paolo

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#6 lore raw
In reply to vlse
Quoted 5 lines · vlse

Hello,

Would there be virtio-audio spec in future for clean audio interface?

Projectacrn.github.io provides one virtio-audio interface for automotive sytems.

Matti, IIRC you talked about virtio-audio as well at KVM Forum Virtio BoF?

regards,
Jens

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