Re: ECP port driver

[Robert Creager <robert@carolinecreager.com>]

Hey Fraser,

Hmmm... 2.2 you say.  I was shooting for 2.4 - it
makes supporting devfs easier to do - no need for
IFDEFS.  Any particular reason you indicate 2.2?  I'm
CC'ing the list in case anyone else has any
preferences and choses to voice them.

If there are serious requests for 2.2, is anyone
willing to test some code on their platform?  Although
I can grab another version of the kernel, my server is
my playground, and I dislike rebooting often :-)

Speaking of distribution specific, what architectures
might someone use this on, and would that someone be
willing to test some code?

I'm planning on using the standard PIO mode for one
device, but would also like to implement DMA use for
another device.  I've noticed that DMA isn't supported
on all platforms, with the parport driver dropping to
single byte reads.  But with a different platform,
this might be speedy enough.  I know Chris mentioned
SPARC's, anything else?  I don't think I've ever seen
a parallel port on a Sparc, is it an add on SBUS card?
Do Ultra's have a parallel port also (PCI bus)?  I'll
take a look at the parport driver when I've a list of
platforms which might be supported to make sure I work
generically if possible, but right now, I going to
make sure that the PC works (since this is all I can
test on).

Thanks for the SANE tip.

Later,
Rob

---- Fraser Farrell <fraser@trilobytes.com.au> wrote:
> >I just ran across a driver (which doesn't use
> >parport), which appears to be downloading
interleaved
> >data from a camera, very similar to what were
doing,
> 
> Robert,
> 
> The Linux drivers for parallel port scanners may
also contain useful
> ideas. You should be able to find the sourcecode
from the SANE
> homepage.
> 
> >PS.  Depending on your Linux knowledge, you may not
of
> >understood one bit of what I said.  This shouldn't
> >matter much, as the make/install/setup/etc will be
> >fairly transparent.
> 
> As long as it's not kernel or distribution-specific.
Aim for a
> baseline of kernel 2.2.x ?
> 
> 
> cheers,
> Fraser Farrell
> 
> 
>