questions about current RM9200 state

[Bernd Walter]

On Fri, Dec 08, 2006 at 11:42:28AM +0100, Bernd Walter wrote:
> On Thu, Dec 07, 2006 at 08:50:08PM -0700, M. Warner Losh wrote:
> > In message: <20061208015032.GF54209 at cicely12.cicely.de>
> >             Bernd Walter <ticso at cicely12.cicely.de> writes:
> > : But I can't probe the bus from userland:
> > : [56]arm9# ./iic_probe /dev/iic0 
> > : - and nothing listed.
> > 
> > twi doesn't support START/STOP ioctls that you use.  Hmmm, that's in
> > p4 that I've removed them because I never got that working.  I also
> > think the version in -head isn't the latest, working one.  I think you
> > do the same thing with a 0 byte transfer.  Except we don't detect
> > NOACK quite right yet, I'm afraid.  I'd expect an error each time you
> > tried.
> 
> Ah - Ok, will switch to 0 Byte transfers and retest.

iic.c:
        case I2CWRITE:
                if (s->count <= 0) {
                        error = EINVAL;
                        break;
                }

Well - it wouldn't work without NOACK detection anyway.

-- 
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