EDIT: I found help on this subject in the WIP thread about this type (I2C) hardware.
I have the Kaby Lake version of this monster (the casing says 7710 but the service tag identifies 7520), but I can't get the touchpad to work yet.
Found out it's I2C touchpad, not sure if there's support for it here, otherwise I know only of VoodooI2C; I'll have to get over there.