From 001a247324b44c0e0b8fdba41a6fc66e7465b8b6 Mon Sep 17 00:00:00 2001 From: Peter Hutterer Date: Wed, 28 Jan 2015 14:05:01 +1000 Subject: 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. --- hwdb/70-touchpad.hwdb | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 hwdb/70-touchpad.hwdb (limited to 'hwdb/70-touchpad.hwdb') diff --git a/hwdb/70-touchpad.hwdb b/hwdb/70-touchpad.hwdb new file mode 100644 index 000000000..bbf44db77 --- /dev/null +++ b/hwdb/70-touchpad.hwdb @@ -0,0 +1,39 @@ +# 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:: +# +# 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 -- cgit v1.2.3