arm: example code for a device driver
I'm, working on a presentation about the ARM architecture. I'd like to introduce how using linux on top of ARM hides the complexity of working on device drivers. I'd like to get a sample of a "raw" ARM driver for whatever device you could think of (mouse? serial port? parallel port? a printer? whatever) where we could take a look at all juicy stuff involved in writing any device driver (all that stuff that linux would keep us from having to work on)... some 20-30 lines of could could suffice, I think.
Thanks in advance.