linux-kernel - Re: [Xen-devel][PATCH] xen/cameraif: add ABI for para-virtual camera

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Date:   Tue, 9 Apr 2019 11:28:58 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Oleksandr Andrushchenko <andr2000@...il.com>,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, konrad.wilk@...cle.com,
        hverkuil@...all.nl, boris.ostrovsky@...cle.com
Cc:     Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
Subject: Re: [Xen-devel][PATCH] xen/cameraif: add ABI for para-virtual camera

On 09/04/2019 11:15, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
> 
> This is the ABI for the two halves of a para-virtualized
> camera driver which extends Xen's reach multimedia capabilities even
> further enabling it for video conferencing, In-Vehicle Infotainment,
> high definition maps etc.
> 
> The initial goal is to support most needed functionality with the
> final idea to make it possible to extend the protocol if need be:
> 
> 1. Provide means for base virtual device configuration:
>  - pixel formats
>  - resolutions
>  - frame rates
> 2. Support basic camera controls:
>  - contrast
>  - brightness
>  - hue
>  - saturation
> 3. Support streaming control
> 
> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
> Cc: Juergen Gross <jgross@...e.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> Cc: Hans Verkuil <hverkuil@...all.nl>

I'm in principle fine with this patch, but it should be sent as part of
a series using that header. In case the related driver isn't accepted
we'd end up with a stale header file.


Juergen