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: <1680188.7K1XCBdsCk@avalon>
Date:	Sun, 30 Nov 2014 23:16:48 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Prabhakar Lad <prabhakar.csengg@...il.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_*()

On Sunday 30 November 2014 21:05:50 Prabhakar Lad wrote:
> On Sat, Nov 29, 2014 at 7:12 PM, Laurent Pinchart 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 ?

I have no plan to work on that myself now, I was hoping you could implement it 
;-)

-- 
Regards,

Laurent Pinchart

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