linux-kernel - Re: [RFCv2 00/17] Request API, take three

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Date:   Tue, 6 Feb 2018 10:49:59 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Alexandre Courbot <acourbot@...omium.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Pawel Osciak <posciak@...omium.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Gustavo Padovan <gustavo.padovan@...labora.com>
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFCv2 00/17] Request API, take three

Hi Alexandre,

On 01/31/18 11:24, Alexandre Courbot wrote:
> This is a quickly-put together revision that includes and uses Hans' work to
> use v4l2_ctrl_handler as the request state holder for V4L2 devices. Although
> minor fixes have also been applied, there are still a few comments from the
> previous revision that are left unaddressed. I wanted to give Hans something
> to play with before he forgets what he had in mind for controls. ;)
> 
> Changelog since v1:
> * Integrate Hans control framework patches so S_EXT_CTRLS and G_EXT_CTRLS now
>   work with requests
> * Only allow one buffer at a time for a given request in the buffer queue
> * Applied comments related to documentation and document control ioctls
> * Minor small fixes
> 
> I have also updated the very basic program that demonstrates the use of the
> request API on vim2m:
> 
> https://gist.github.com/Gnurou/dbc3776ed97ea7d4ce6041ea15eb0438
> 
> It does not do much, but gives a practical idea of how requests should be used.

Can you rebase and repost? It doesn't apply anymore to the latest media_tree master.
Among others v4l2-core/videobuf2-* has been moved to common/videobuf2/videobuf2-*.

But there are also conflicts in v4l2-compat-ioctl32.c.

Thanks!

	Hans