Re: IRDA/IRCOMM on a TiBook patch

On Tue, 2001-10-16 at 12:47, Till Straumann wrote:

I (and I believe other people as well) had problems
setting up IRDA/IRCOMM on a TiBook / 2.4.12-benh and
older 2.4 series kernels [on powerpc].

As far as I could find out there are several problems:

1) There seems to be a timing problem when opening
   the irda port which prevents it from being properly
   initialized.

   When I run "irattach /dev/ttyS1 -s 1", my Nokia 8890
   is never discovered. However, when I issue a 'cat /dev/ttyS1',
   prior to starting irattach (i.e. by opening the device
   [and holding it open until irattach starts]),
   things are properly initialized
   and discovery works. Putting 'mdelay(100);' somewhere
   in macserial.c:rs_open() does the job. However, I have
   not yet figured out what exactly causes the problem.
   A user space work-around involves patching irattach.c

2) There is an endianness bug. A possible solution is attached.

Your patch seems to be missing a bit (in qos.c IIRC) though.

3) When applying 1) and 2), IRCOMM works provided that
   /proc/sys/net/irda/max_baud_rate is clamped to 57600.
   Apparently, there is another problem in 'macserial.c' where speeds
   higher than 57600 are treated especially.

Have you managed to do anything 'real' yet? I tried your patch, and it
does seem to improve things, irdadump seems to show data from my Palm,
but I haven't succeeded to synchronize yet.


--
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/