On May 20 2014 or thereabouts, Jiri Kosina wrote:

On Wed, 23 Apr 2014, Benjamin Tissoires wrote:

quoted

Currently, hid-rmi drives every Synaptics product, but the touchscreens
on the Windows tablets should be handled through hid-multitouch.

Instead of providing a long list of PIDs, rely on the scan_report
capability to detect which should go to hid-multitouch, and which
should not go to hid-rmi.

We introduce a generic HID_GROUP_HAVE_SPECIAL_DRIVER which can be reused
amoung other drivers if they want to have a catch rule but still
have multitouch devices handled through hid-multitouch.

related bug:
https://bugzilla.kernel.org/show_bug.cgi?id=74241
https://bugzilla.redhat.com/show_bug.cgi?id=1089583

Signed-off-by: Benjamin Tissoires <redacted>

Hi Benjamin,

sorry for not responding sooner.

It's not a big deal. Actually, the Canonical folks reminded me the state
of this patch that I completely forgot too :)

Yes, I have to say I find HID_GROUP_HAVE_SPECIAL_DRIVER very disgusting. 
Especially its (non-)relation to hid_have_special_driver[] is very 
confusing.

If you could update this to be RMI-specific (i.e. create a special 
HID_GROUP for RMI devices), I'll merge it right away.

Ok, I'll add this to the pile of things to do today.

Cheers,
Benjamin