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Commit 2b2a1b0e authored by Peter Hutterer's avatar Peter Hutterer
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Add udev bits to assign LIBINPUT_DEVICE_GROUP


The easiest way to get a device group is by looking at the phys path of the
input device (which looks like usb-0000:00:14.0-1/input1) and dropping the
/inputX bit. The rest is the same for devices that belong together (except on
the Cintiq 22HD Touch).

Ideally we could just take ATTRS{phys} but we can't select substrings to drop
into ENV so we need to do it ourselves. This patch adds a callout that takes a
syspath and prints the mangled path, to be used in LIBINPUT_DEVICE_GROUP.

The rule triggers on any device that has a non-zero phys attribute, this
groups devices like tablets together but also devices like mice with multiple
interfaces.

Signed-off-by: default avatarPeter Hutterer <peter.hutterer@who-t.net>
Tested-by: default avatarBenjamin Tissoires <benjamin.tissoires@gmail.com>
parent f0d7eaf1
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