Re: [PATCH V1 2/3] Documentation: gpio: Add details of open-drain configuration

[Laxman Dewangan <ldewangan@nvidia.com>]

On Thursday 16 February 2012 03:55 AM, Linus Walleij wrote:
>> Have you though about support for lines that are pulled low instead of
>> high?  Those aren't as common, but it is conceivable that some
>> hardware would need it.
> So if the idea is (if I get it correctly) that this thing is an input
> sometimes and open drain/collector output sometimes, then
> open source/emitter for the inverse situation is an equally valid
> case right? In that case I think it'd be best to add both.
>
> The COH901 driver for U300 supports open source/emitter
> BTW.
>

Yes, I can add the open source also but like to be in incremental 
change. Not together with open drain.
We can go with:
- open drain core driver support.
- open drain sysfs interface support
- open source core driver support
- open source sysfs interface.

I have already changes for the first 2 which we can review/apply,
Meanwhile I will work on open source support.

Does it look good?

> Yours,
> Linus Walleij