[ltp] Re: Some IR progress

[Tino Keitel]

> I honestly don't know why /dev/ttyS1 seems to be seperate from this
> /dev/irnine business.  But I suspect that the irda is taking over ttyS1 in
> the background and not really telling anyone about it.

If you use irattach, the kernel will use the "irtty" driver to talk to the IR 
hardware. This means that the irda driver talks to the hardware by talking to 
/dev/ttyS1. The hardware settinges (irq, io) of your ttyS1 must match the 
hardware settings of your IR port or it won't work. The ttyS1 must also be 
configured as a 16550A UART.

My IR hardware is set to use IRQ 3 and IO 0x2e8 wich are the same settings of 
my ttyS2.

Till Straumann has written a very nice HOWTO about this. It's called "The 
IR-DRIVER-TINY-HOWTO". I strongly suggest you to read it.

> This seems the case since the HOWTO notes indicate that you have to use
> Windows to enable the IR port (Which kills com1 in the back for thinkpads).
>  Then you can go into Linux and find the IR port.
> Apparently, thinkpads have a trade off between your com1 port and your IR
> port.
>
> Let me know if this is of any assistance and/or if this makes any sense to
> you.
>
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