linux-kernel - Re: [PATCH] devicetree: Add video bus switch

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Date:   Sun, 5 Feb 2017 22:12:20 +0100
From:   Pavel Machek <pavel@....cz>
To:     Sakari Ailus <sakari.ailus@....fi>, mchehab@...pensource.com
Cc:     laurent.pinchart@...asonboard.com, robh+dt@...nel.org,
        devicetree@...r.kernel.org, ivo.g.dimitrov.75@...il.com,
        sre@...nel.org, pali.rohar@...il.com, linux-media@...r.kernel.org,
        galak@...eaurora.org, mchehab@....samsung.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] devicetree: Add video bus switch

Hi!

> > 9) Highly reconfigurable hardware - Julien Beraud
> > 
> > - 44 sub-devices connected with an interconnect.
> > - As long as formats match, any sub-device could be connected to any
> > - other sub-device through a link.
> > - The result is 44 * 44 links at worst.
> > - A switch sub-device proposed as the solution to model the
> > - interconnect. The sub-devices are connected to the switch
> > - sub-devices through the hardware links that connect to the
> > - interconnect.
> > - The switch would be controlled through new IOCTLs S_ROUTING and
> > - G_ROUTING.
> > - Patches available:
> >  http://git.linuxtv.org/cgit.cgi/pinchartl/media.git/log/?h=xilinx-wip
> > 
> > but the patches are from 2005. So I guess I'll need some guidance here...
> 
> Yeah, that's where it began (2015?), but right now I can only suggest to
> wait until there's more. My estimate is within next couple of weeks /
> months. But it won't be years.

Ok, week or two would be ok, couple of months is not. And all I need
is single hook in common structure.

So if g_endpoint_config hook looks sane to _you_, I suggest we simply
proceed. Now, maybe Mauro Carvalho Chehab <mchehab@...pensource.com>
or Laurent or Julien will want a different solution, but
then... they'll have to suggest something doable now, not in couple of
months.

Does that sound like a plan?

Mauro added to cc list, so we can get some input.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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