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SubjectRe: [PATCH] IIO ADC support for AD7923
On 01/18/2013 11:02 PM, Getz, Robin wrote:
> On Thu 17 Jan 2013 12:36, Lars-Peter Clausen pondered:
>> On 01/17/2013 06:11 PM, Alessandro Rubini wrote:
>>> [...]
>>>
>>> But yes, you are right. I'm working on another I/O subsystem. We are
>>> gong to release zio-1.0 in a few days, because the thing is mature
>>> and used in production.
>
> Neither means it's a good idea for upstream :)
>
>> Still it's a very bad idea to have two subsystem which have a huge overlap
>> in both functionality and targeted devices. It will gives us all lots of
>> headaches later on. As IIO continues to evolve it will get support for some
>> of the features that only ZIO supports at the moment and as ZIO grows it
>> will get support for features currently only supported by IIO. So in the
>> end we have two frameworks for the very same purpose.
>
> I want to strongly agree with Lars-Peter. Lets work together on one thing -
> which tries to solve all the our system level issues. As an end user - I
> don't want to re-write userspace for multiple interfaces to the same
> underlying ADC/DACs.
>
> I don't know how Greg feels about another subsystem in the kernel which
> duplicates existing functionality/targetted devices - but it doesn't sound
> like a good idea to me.
>
>>> I hope to meet you in person at fosdem and be able to talk over a beer
>>> or two.
>>
>> Looking forward to meeting you :)
>
> Hopefully you can come to some logical conclusions over a friendly beverage.
> Even if you can't decide on how to merge things (plan for adding missing
> features from one to the other), maybe it's just deciding on how to get as
> much reuse as possible (duplication of device register and bit definitions?)
>

I second these comments from Lars and Robin (or third I suppose ;).
Lets get the best possible result. The source of an idea or code
really doesn't matter in the long run, what matters is that we
get a solution that works well for all users.

Enjoy those beverages (and fosdem of course!)

Jonathan


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