On Tue, Feb 11, 2014 at 8:52 AM, Russell King - ARM Linux
[off-list ref] wrote:

On Tue, Feb 11, 2014 at 07:56:33AM -0600, Rob Herring wrote:

quoted

On Tue, Feb 11, 2014 at 5:45 AM, Philipp Zabel [off-list ref] wrote:

quoted

This allows to reuse the same parser code from outside the V4L2 framework,
most importantly from display drivers. There have been patches that duplicate
the code (and I am going to send one of my own), such as
http://lists.freedesktop.org/archives/dri-devel/2013-August/043308.html
and others that parse the same binding in a different way:
https://www.mail-archive.com/linux-omap@vger.kernel.org/msg100761.html

I think that all common video interface parsing helpers should be moved to a
single place, outside of the specific subsystems, so that it can be reused
by all drivers.

Perhaps that should be done rather than moving to drivers/of now and
then again to somewhere else.

Do you have a better suggestion where it should move to?

No.

drivers/gpu/drm - no, because v4l2 wants to use it
drivers/media/video - no, because DRM drivers want to use it
drivers/video - no, because v4l2 and drm drivers want to use it

I don't believe it exists currently, so it would need to be created.
Perhaps adding a layer of directory to combine these. This patch alone
is not enough to really justify that, but if there's a lot more shared
code possible then it would be the right direction.

Maybe drivers/of-graph/ ?  Or maybe it's just as good a place to move it
into drivers/of ?

I assume you weren't serious, but no for /of-graph. If a better place
can't be found/made, I'll take it.

Rob