I need to develop a driver for a multifunction PCMCIA card with a standard serial interface (16550) and a proprietary FIFO interface. I can access the serial port now, but the FIFO is the problem.
Since I have so far no experience with Kernel driver development, and since the application is not very demanding and all this happens in a controlled embedded environment (x86 based), I'm tempted to do this in user land if possible...
Any help now at the design stage would be much appreciated, so that I don't run into the wrong direction!
- First of all: is this possible? I need to access a few registers on the PCMCIA card and that should be it. No IRQs, I think I can get away with polling.
- Any hints for documentation on how to do it? Does anybody know of any similar drivers that already exist?
Thanks a lot already...
Wolfgang