I did not know about it since I found:

http://oem.archive.canonical.com/pool/public/o/oem-alps-touchpad-1521052-dkms/oem-alps-touchpad-1521052-dkms_1oem7_all.deb

If you are interested extracted patch is in attachment.

I do not understand it... Why Canonical is hidden and don't communicate
with rest of world? Otherwise touchpads could work out-of-box on non
Ubuntu systems too with mainline kernel.

-- 
Pali Rohár
pali.rohar@gmail.com