Re: [PATCH] devicetree: Add video bus switch

Sebastian Reichel
2017-02-05T23:40:22Z

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Hi,

On Sun, Feb 05, 2017 at 10:12:20PM +0100, Pavel Machek wrote:
> > > 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@s-opensource.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.

side note: It's an kernel-internal API only used by the media
subsystem. Code can be easily updated to use an improved API
at any time.

-- Sebastian

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