systemd/hwdb/70-touchpad.hwdb

# This file is part of systemd.
#
# The lookup keys are composed in:
#   70-touchpad.rules
#
# Note: The format of the "touchpad:" prefix match key is a
# contract between the rules file and the hardware data, it might
# change in later revisions to support more or better matches, it
# is not necessarily expected to be a stable ABI.
#
# Match string format:
# touchpad:pnpid:<pnpid>:
#
# To add local entries, create a new file
#   /etc/udev/hwdb.d/71-touchpad-local.hwdb
# and add your rules there. To load the new rules execute (as root):
#   udevadm hwdb --update
#   udevadm trigger /dev/input/eventXX
# where /dev/input/eventXX is the touchpad in question. If in
# doubt, simply use /dev/input/event* to reload all input rules.
#
# If your changes are generally applicable, open a bug report on
#   http://bugs.freedesktop.org/enter_bug.cgi?product=systemd
# and include your new rules, a description of the device, and the
# output of
#   udevadm info /dev/input/eventXX
# (or /dev/input/event*).
#
# Allowed properties are:
#    TOUCHPAD_HAS_TRACKPOINT_BUTTONS=1
#
# If the TOUCHPAD_HAS_TRACKPOINT_BUTTONS property is set, this
# device has # the trackpoint buttons wired up to the touchpad as
# BTN_0, BTN_1 and BTN_2. This affects the Lenovo X1 Carbon 3rd
# and the *50 series (T450, T550, etc.)

# Lenovo X1 Carbon 3rd
touchpad:pnpid:*LEN0048*:
 TOUCHPAD_HAS_TRACKPOINT_BUTTONS=1
hwdb: add a touchpad hwdb Currently used to tag devices in the new Lenovo 50 series and the X1 Carbon 3rd. These laptops re-introduced the physical trackpoint buttons that were missing from the 40 series but those buttons are now wired up to the touchpad. The touchpad now sends BTN_0, BTN_1 and BTN_2 for the trackpoint. The same button codes were used in older touchpads that had dedicated scroll up/down buttons. Input drivers need to work around this and thus know what they're dealing with. For the previous gen we introduced INPUT_PROP_TOPBUTTONPAD in the kernel, but the resulting mess showed that these per-device quirks should really live in userspace. The list currently includes the X1 Carbon 3rd PNPID, others will be added as get to know which PNPID they have. 2015-01-28 07:05:01 +03:00			`# This file is part of systemd.`
			`#`
			`# The lookup keys are composed in:`
			`# 70-touchpad.rules`
			`#`
			`# Note: The format of the "touchpad:" prefix match key is a`
			`# contract between the rules file and the hardware data, it might`
			`# change in later revisions to support more or better matches, it`
			`# is not necessarily expected to be a stable ABI.`
			`#`
			`# Match string format:`
			`# touchpad:pnpid:<pnpid>:`
			`#`
			`# To add local entries, create a new file`
			`# /etc/udev/hwdb.d/71-touchpad-local.hwdb`
			`# and add your rules there. To load the new rules execute (as root):`
			`# udevadm hwdb --update`
			`# udevadm trigger /dev/input/eventXX`
			`# where /dev/input/eventXX is the touchpad in question. If in`
			`# doubt, simply use /dev/input/event* to reload all input rules.`
			`#`
			`# If your changes are generally applicable, open a bug report on`
			`# http://bugs.freedesktop.org/enter_bug.cgi?product=systemd`
			`# and include your new rules, a description of the device, and the`
			`# output of`
			`# udevadm info /dev/input/eventXX`
			`# (or /dev/input/event*).`
			`#`
			`# Allowed properties are:`
			`# TOUCHPAD_HAS_TRACKPOINT_BUTTONS=1`
			`#`
			`# If the TOUCHPAD_HAS_TRACKPOINT_BUTTONS property is set, this`
			`# device has # the trackpoint buttons wired up to the touchpad as`
			`# BTN_0, BTN_1 and BTN_2. This affects the Lenovo X1 Carbon 3rd`
			`# and the *50 series (T450, T550, etc.)`

			`# Lenovo X1 Carbon 3rd`
			`touchpad:pnpid:LEN0048:`
			`TOUCHPAD_HAS_TRACKPOINT_BUTTONS=1`