[PATCH libinput 0/8] Add libinput_device_suspend() to disable devices

[Bill Spitzak]

Seems to me you only need two states: what you call disabled and what 
you are calling "smart disable".

The fully disabled is so a button the hardware does not know about can 
disable the device. Or a wayland compositor could use a mouse being 
added to disable the device.

But the "smart disable" sounds like part of the device driver / libinput 
driver, just like palm detection. There is no reason to turn it off. 
Maybe to "tune" it but that would require a much more complex api.