Re: [hpoj-devel] 2.4 kernel issues

[Tim W. <tw...@re...>]

On Thu, Jan 04, 2001 at 01:40:29AM +0100, Burkhard Kohl wrote:

> What would be the proper replacement for a statement like
>       outb(PAR_ECP_CONTROL_BIDIRECTIONAL, ECONTROL(l->port));
> when switching from ecp forward to reverse? Or is that now obsolete
> because it could handled by the parport_pc module? Unfortunately
> we can't use the ieee1284 functions.

(If you're not using the in-kernel parport support, why do you need to
replace it?)  parport_pc doesn't even use the ECR for this (rightly or
wrongly), it just does it by hand.

As I understand it, the reason you need to avoid the IEEE 1284
functions is to do with blocking.  Is that right?  In 2.4 there was a
new function 'parport_set_timeout' which was for handling this
requirement.

> >From the parport driver sources I see that there is no BECP support=20
> for now - do you expect to have it in the near future? In ieee12844pp.c
> there is actually only one event (41) referring to becp when switching
> from ecp reverse to forward when the peripheral is idle.

It's not something that there's ever been demand for; in fact, you're
the first person who's even mentioned it. :-)

Tim.
*/