This module file is a hack from the viahss-0.6 and 0.92 driver. I took that
module and implemented the ACPI init function for the Via serial port to enable
accessing the Serial port under linux. Ideally this should be handled via
the ACPI routines or in the serial.c driver.

The issue is that the Bios does not enable the serial port connected to the
touchscreen controller. ACPI is used to enable it. Linux does not support
enough ACPI to enable the interface. To verify the operation, run
'setserial /dev/ttyS0' and you will see an unknown interface. After running
the commands below, run the setserial command again and you will see a
16550a interface. Now to figure out the touchscreen commands.

To build:

For Linux kernel 2.4 series
1) make
2) make install

For Linux kernel 2.6 series
1) mv Makefile-2.6 Makefile
2) make
3) make install


To use:
1) insmod fpi2002
2) setserial /dev/ttyS0 autoconfig

(Do it before any other serial port initialisation.)

Now the serial port is visible and useable.