[RFC] Add Generic GPIO driver

[Sascha Hauer]

On Tue, Feb 19, 2013 at 11:09:23AM +0400, Alexander Shiyan wrote:
> > On Mon, Feb 18, 2013 at 02:13:22PM +0400, Alexander Shiyan wrote:
> > > > On Fri, Feb 15, 2013 at 10:49:27PM +0400, Alexander Shiyan wrote:
> > > > > This patch adds generic memory-mapped GPIO controller support.
> > > > > Code taken from Linux Kernel and adopted for barebox.
> > > > 
> > > > I'm fine with this if you add a user for it. I wonder though if it's
> > > > worth it to have this driver for barebox. If I have a driver in the
> > > > kernel that already uses it, then this makes it simple to copy it, but
> > > > should I have to write a new gpio driver, I'm unsure if it's simpler
> > > > to write a new gpio driver or to register with the generic gpio
> > > > driver.
> > > 
> > > Here's an example that I'm checking:
> > 
> > Ok, this indeed looks nice and short. You convinced me ;)
> > 
> > As said, I'm fine with the generic gpio driver if you add the below as
> > first user.
> 
> I still beg to consider patch for generic GPIO separately.
> Then I will send you two completely different versions of the implementation
> GPIO for CLPS711X for consideration.

I don't know if I'm misunderstanding you. Of course the generic GPIO
driver and the CLPS711x driver should be two separate patches, but
both should come in the same series. I just want to wait applying the
generic driver until we have a user (and thus compile coverage).

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |