Does not work in gpi0 mode, can work in polling mode. 
 
	He sees it as a mouse, it happened to me on my latitude before the kext alpshid came out, then it was fixed. 
 
	In your case it is a syna. 
 
	Write on the gitter of I2c and look for if it is compatible with voodoo rmi I2c. 
 
	Good luck. 
 
	 
 
	But try instead of I2c hid put I2c syna