Re: GPIO on the Au1500

["Gilad Rom" <gilad@romat.com>]

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@embeddedalley.com>
To: <charles.eidsness@ieee.org>; "Gilad Rom" <gilad@romat.com>
Cc: <linux-mips@linux-mips.org>
Sent: Sunday, November 14, 2004 8:45 PM
Subject: Re: GPIO on the Au1500


> 
> --- Charles Eidsness <charles.eidsness@ieee.org>
> 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@embeddedalley.com>
>> > To: "Gilad Rom" <gilad@romat.com>;
>> <linux-mips@linux-mips.org>
>> > Sent: Friday, November 12, 2004 8:13 PM
>> > Subject: Re: GPIO on the Au1500
>> > 
>> > 
>> >>
>> >> --- Gilad Rom <gilad@romat.com> 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
>> >>>
>> >>>
>> >>>
>> >>
>> > 
>> > 
>> > 
>> 
>> 
> 
>