Raydium Touch Screen Driver for Skylake/Apollo Lake and newer chromebooks.
Tested on Acer Chromebook Spin 15 CP315. Works with up to 10 touches.
Huge thanks to the vmulti and DragonFlyBSD projects, which I used for references. Also, thanks to Microsoft for open sourcing the Synaptics RMI I2C driver, which I also used as a reference.