Re: [patch/rfc 2.6.19-rc5] arch-neutral GPIO calls

[Bill Gatliff]

David:

David Brownell wrote:

> I know there have been discussions about standardizing GPIOs before,
> but nothing quite "took".  One of the more recent ones was
>
>  http://marc.theaimsgroup.com/?l=linux-kernel&m=110873454720555&w=2
>
> Below, find what I think is a useful proposal, trivially implementable on
> many ARMs (at91, omap, pxa, ep93xx, ixp2000, pnx4008, davinci, more) as well
> as the new AVR32.
>
> Compared to the proposal above, key differences include:
>  

Excellent proposal, I think it should be implemented as-is.  I don't 
care that this proposal only works for "real" GPIOs, and doesn't provide 
for a userspace API.

At its worst, this proposal offers an intermediate step towards a 
framework that can do both synchronous/real and asynchronous GPIO 
control.  At its best, provides a starting point for that framework AND 
a much-needed unification in an API that could really use cleaning up 
TODAY.  No downside, in my opinion.


b.g.

--
Bill Gatliff
bgat@xxxxxxxxxxxxxxx

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