linux-kernel - Re: [PATCH] media: v4l2-subdev.h: drop the guard CONFIG_VIDEO_V4L2_SUBDEV_API for v4l2_subdev_get_try

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Message-ID: <CA+V-a8tNW8JXKEeaAwEKkB+SCS2_My228spsgpbb5JQPjdC2Og@mail.gmail.com>
Date:	Sun, 30 Nov 2014 21:05:50 +0000
From:	Prabhakar Lad <prabhakar.csengg@...il.com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:	Hans Verkuil <hverkuil@...all.nl>,
	linux-media <linux-media@...r.kernel.org>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Sakari Ailus <sakari.ailus@....fi>
Subject: Re: [PATCH] media: v4l2-subdev.h: drop the guard CONFIG_VIDEO_V4L2_SUBDEV_API
 for v4l2_subdev_get_try_*()

Hi Laurent,

On Sat, Nov 29, 2014 at 7:12 PM, Laurent Pinchart
<laurent.pinchart@...asonboard.com> wrote:
> Hi Prabhakar,
>
[Snip]
>> > Sure. That's a better choice than removing the config option dependency of
>> > the fields struct v4l2_subdev.
>
> Decoupling CONFIG_VIDEO_V4L2_SUBDEV_API from the availability of the in-kernel
> pad format and selection rectangles helpers is definitely a good idea. I was
> thinking about decoupling the try format and rectangles from v4l2_subdev_fh by
> creating a kind of configuration store structure to store them, and embedding
> that structure in v4l2_subdev_fh. The pad-level operations would then take a
> pointer to the configuration store instead of the v4l2_subdev_fh. Bridge
> drivers that want to implement TRY_FMT based on pad-level operations would
> create a configuration store, use the pad-level operations, and destroy the
> configuration store. The userspace subdev API would use the configuration
> store from the file handle.
>
are planning to work/post any time soon ? Or are you OK with suggestion from
Hans ?

Thanks,
--Prabhakar Lad
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