Re: [Gumstix-users] patch for audiostix UCB1400 ADC access via /proc

[Matt R. <me...@co...>]

Thanks Dave,

    Finally got a chance to use your scripts, and they worked great!  Here's
a new ucb1400-ac97-audio.patch file that includes ADC support in the /proc
filesystem.  Hopefully this will be useful to somebody.

-Matt

On Tue, Mar 11, 2008 at 1:07 PM, Dave Hylands <dhy...@gm...> wrote:

> Hi Matt,
>
> >    I've been messing around with the ac97_patch.c file that breaks out
> the
> > UCB1400 GPIO pins, and I basically managed to extrapolate from the
> existing
> > patch code (I think Dave is due credit here. thanks, Dave) and make a
> > parallel /proc entry from which you can read ADC vales.
>
> Actually, I didn't have anything to do with the UCB gpio stuff so
> credit is due elsewhere...
>
> >    It seems to work pretty well, and I suspect that others might be
> > interested in using the ADC.  I would like to submit a patch, but I'm
> > relatively new to software development, and I don't really know how to
> do
> > it, since i would be patching what is already a patch file.  I suspect
> that
> > the correct solution involves getting a clean copy of the linux source
> and
> > then running diff with some specific options.  Anybody know what those
> > should be? Or should I just send the modified ac97_patch.c?
>
> I have a couple of scripts I use. You can find copies over here:
> http://websvn.hylands.org/
> Click on Projects, utils, scripts and you'll want the getdiff.sh and
> makepatch.sh scripts.
>
> My original source for these scripts is over here:
> <http://rmathew.com/articles/gcj/crpatch.html>
>
> I tweaked them slightly.
>
> The minor change that I did was that if I say modified something in
> drivers/video but I wanted the path to include linux-2.6.21gum, then I
> would change to build_arm_nofpu and run:
>
> makepatch.sh linux-2.6.21gum/drivers/video
>
> and it would only look for patches in that directory tree rather than
> searching the entire linux tree (which can take quite a while).
>
> --
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/
>
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