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F8-x86_64 on the Acer Ferrari 3400LMi
to go for since it is faster than SIR and there is a stable Linux FIR driver available
for this IR-chip. Below I'll walk you through the steps that got it working for me.
1. Start with grabbing a pen and a piece of paper and restart your Precious.
Yes, this is one of those few occasions when you need to restart you Linux
system. Press F2 during boot-up to enter the BIOS and note the settings for
your IR-port. You do not need to change anything, but you need to know
your exact setting. I will use my own setting through out this example:
Base I/O address: [2F8]
Interrupt: [IRQ 3]
DMA channel: [DMA 1]
Once you have noticed your corresponding setting just exit the BIOS
without saving and start your system.
2. Make sure that no other services use IRQ 3. Most likely your setting is also
IRQ 3, so start looking in the /etc/pcmcia/config.opts file. Here you
need to uncomment or insert the line
exclude irq 3
to prevent the pcmcia service from intervening.
3. Now we want a module capable of handling FIR on the Ferrari chip to be
loaded when the IrDA service is started. The module of choice is nsc-ircc,
so add the following two lines in /etc/modprobe.conf:
alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=1
Pay attention to use the settings from your own BIOS for the last three
parameters.
4. We also need to tell the IrDa service to attach directly to the device for our
FIR capable module, so make sure to change the DEVICE setting in
/etc/sysconfig/irda to:
DEVICE=irda0
5. Then we do not want the generic Linux serial driver to interfere. One way of
doing that is to add the following line in /etc/init.d/irda:
setserial /dev/ttyS1 uart none
The line should be place just before
daemon /usr/sbin/irattach ${DEVICE} ${ARGS}
6. While you are at it you might as well disable SIR by commenting out the tty
lines. A short snippet of the final /etc/init.d/irda:
...
# /sbin/modprobe ircomm-tty 2>/dev/null
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