Project has been moved and renamed to better fit the current supported hardware. No further work will be done on this fork and for the latest version of the driver visit the repo AlpsHID.

This is a satellite kext which uses VoodooI2C's multitouch engine to bring native multitouch to the Alps T4 USB touchpad found on the Elite X2 1012 G1 and G2 devices. Now also supports I2C version of the T4 as found on HP ZBook G3 studio and U1 version found on Dell Latitude 7280, 5480, 5580 laptops.

Currently this kext only works when installed to /Library/Extensions. VoodooI2C and VoodooI2CHID must also be installed to /Library/Extensions.

Should work when injected via Clover or OC, but you do need VoodooI2C / VoodooI2CHID.

The VoodooI2CHID that is supplied in the release has to be used for now until changes are merged with the main branch.

The latest release of this kext works also work for I2C Alps touchpad devices with the following device IDs - 0x1209, 0x120b, 0x120c but it is currently being tested. Since it only subclasses the Event Service, you will always need to install VoodooI2C / VoodooI2CHID to instantiate the hid device. If you have an I2C Alps touchpad and try the kext, please report in the VoodooI2C gitter chat whether or not it works for you.

Ok, so that doesn't work at all unfortunately. The code as written isn't able to kick an I2C Alps touchpad into precision mode. The best way forward is to write a standalone kext based on one of VoodooI2C's current satellites (ie - Elan, etc).

To build --

git clone https://github.com/juico/AlpsT4USB.git
cd AlpsT4USB
git submodule init && git submodule update

Then add the MacKernel SDK.

git clone https://github.com/acidanthera/MacKernelSDK.git

Open the main project in Xcode and build away. :)

This code is derived and adapted from VoodooI2CHID's Multitouch Event Driver and Precision Touchpad Event Driver (https://github.com/alexandred/VoodooI2C) and the Linux kernel driver for the alps t4 touchpad (https://github.com/torvalds/linux/blob/master/drivers/hid/hid-alps.c)

• @kprinssu for VoodooInput and it's integration into AlpsT4USB. Thanks!
• the acidanthera team for the MacKernel SDK.