Fujitsu Lifebook scroll device support

This thread is an offshoot of an earlier one regarding hardware support for the Fujitsu T901 hybrid laptop. It was noted that there is currently no Linux support for the two scroll devices on it (scroll wheel, scroll sensor), but some preliminary investigation showed it might be possible to add it.

I believe the scroll devices probably exist on other Fujitsu laptops as well, but I only have a single T901 in my possession to work with.

Original thread:
https://www.linuxquestions.org/quest....php?p=6235699