[PATCH 0/2] Associate ddc adapters with connectors

Andrzej Pietrasiewicz andrzej.p at collabora.com
Wed Jun 26 06:50:47 UTC 2019


W dniu 25.06.2019 o 16:20, Daniel Vetter pisze:
> On Tue, Jun 25, 2019 at 03:10:32PM +0100, Russell King - ARM Linux admin wrote:
>> On Tue, Jun 25, 2019 at 04:07:55PM +0200, Daniel Vetter wrote:
>>> Otherwise I like this. Biggest problem I'm seeing here is rolling this out
>>> everywhere, this is a lot of work. And without widespread adoptions it's
>>> not terribly useful for userspace.
>>
>> There will be cases where it's not possible, because the I2C bus is
>> hidden behind a chip that doesn't give you direct access to the DDC
>> bus.
> 
> Oh sure, plus lots of connectors where there's just not ddc bus at all.
> But if we only roll this out for a handful of drivers it's also not great,
> that's what I meant. Looking at
> 
> $ git grep drm_do_get_edid
> 
> there's only very few drivers where the ddc bus is hidden. There's a lot
> more where it's not, and I think a big series to tackle those would serve
> extremely well to make a case for this sysfs link.
> -Daniel
> 

I will respond with a v3 then, including as many drivers as possible.
Those will be compile-tested only, though.

Andrzej


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