IRDA/IRCOMM on a TiBook patch
michdaen at iiic.ethz.ch
Fri Oct 19 11:02:27 EST 2001
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
> 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
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