Hello all,
I want to write a simple serial port driver(i.e system back to back connection with serial cable and transfer data i.e read and write)...

i saw may sites ..but, in all sites there are giving with an application type program ..as like to open "/dev/ttyS0" and setting buade rate and some register's then write and read....

i want to how IRQ -handler is registered (ISR regisration when any data comes to serial port the intterupt handler should invoke )function....
what r the register to configure... and what Data structure to be used......
if anybody body have sample driver on this send it....
please give suggestion.....
Regards
Madhukar