From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: IRDA/IRCOMM on a TiBook patch From: Michel =?ISO-8859-1?Q?D=E4nzer?= To: Till Straumann Cc: linuxppc-dev@lists.linuxppc.org, linux-irda@pasta.cs.uit.no In-Reply-To: <3BCC104D.B5770ADE@TU-Berlin.de> References: <3BCC104D.B5770ADE@TU-Berlin.de> Content-Type: text/plain; charset=ISO-8859-1 Date: 19 Oct 2001 03:02:27 +0200 Message-Id: <1003453347.24371.912.camel@pismo> Mime-Version: 1.0 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: 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/