Re: GPIO on the Au1500

["Gilad Rom" <gilad@xxxxxxxxx>]

Thank you for the driver, I'm using it as a reference.

Still, I am trying to acccess the GPIO ports of the Au1500
using /dev/mem, but I keep getting these odd values
(see previous messages to this list)

Do you think it is possible, 
or should I stick to using the driver?


Thank you,
Gilad.

----- Original Message ----- 
From: "Pete Popov" <ppopov@xxxxxxxxxxxxxxxxx>
To: <charles.eidsness@xxxxxxxx>; "Gilad Rom" <gilad@xxxxxxxxx>
Cc: <linux-mips@xxxxxxxxxxxxxx>
Sent: Sunday, November 14, 2004 8:45 PM
Subject: Re: GPIO on the Au1500


> --- Charles Eidsness <charles.eidsness@xxxxxxxx>
> wrote:
>
> > Hi Gilad,
> >
> > A little while ago I wrote my own GPIO driver for
> > the Au1000, mainly as a learning experience. I 
> > never bothered to release it because a driver 
> > already exists and I thought it was working. 
>
> It was, a long time ago, when it was written for the
> Au1000. I had a user app and doc somewhere but can't
> find it anymore. The driver didn't support gpio2 and
> was, in general, stale. So perhaps your driver will
> help Gilad.
>
> Pete
>
> > I'm not sure if it will 
> > work on the Au1550, but if you're interested you can
> > find the source 
> > code here:
> http://members.rogers.com/charles.eidsness/au1000_gpio.c
> >
> http://members.rogers.com/charles.eidsness/au1000_gpio.h
> > Cheers,
> > Charles
> >
> > Gilad Rom wrote:
> > > Thanks. Can't I just mmap /dev/mem and use the
> > > GPIO offset from SYS_BASE?
> > > 
> > > Gilad.
> > > 
> > > ----- Original Message ----- From: "Pete Popov"
> > <ppopov@xxxxxxxxxxxxxxxxx>
> > > To: "Gilad Rom" <gilad@xxxxxxxxx>;
> > <linux-mips@xxxxxxxxxxxxxx>
> > > Sent: Friday, November 12, 2004 8:13 PM
> > > Subject: Re: GPIO on the Au1500
> > > 
> > > 
> > >>
> > >> --- Gilad Rom <gilad@xxxxxxxxx> wrote:
> > >>
> > >>> Hello,
> > >>>
> > >>> I am trying to use the au1000_gpio driver, but
> > I'm a
> > >>> little clueless as to how it is meant to be
> > used. Can I use the GPIO 
> > >>> ioctl's from a userland program, or must I write
> > a kernel module?
> > >>
> > >>
> > >> I'll see if I can dig up some docs and the
> > example
> > >> userland program this weekend. That driver hasn't
> > been
> > >> tested in a while though.
> > >>
> > >> Pete
> > >>
> > >>> Thank you,
> > >>> Gilad Rom
> > >>> Romat Telecom
> > >>>
> > >>>
> > >>>
> > >>
> > > 
> > > 
> > >