Touchpads, notably Elantech, ALPS and bcm5974 don't provide x/y resolution
until recent generations.
Add a new property, LIBINPUT_ATTR_SIZE_HINT, that provides size information to
libinput. Note that this property *does not* override true resolution values,
it is only used when the resolution is missing. It is used merely as an
approximate size hint.
If the resolution for a specific device is known it should be added to the
udev hwdb so it can be set globally. See the bcm5974 entries here:
http://cgit.freedesktop.org/systemd/systemd/tree/hwdb/60-evdev.hwdb.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Some devices need specific configuration or different defaults.
Push that into udev rules and a hwdb file, that's where detection is the
easiest. The LIBINPUT_MODEL_ prefix is used to determine some type of device
model. Note that this property is a private API and subject to change at
any time without notice.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
There is quite a wide spread in the delta events generated by trackpoints,
some generate deltas of 1-2 under normal use, while others generate deltas
from 1-20.
It is desirable to normalize trackpoint deltas just like we are normalizing
mouse deltas to 1000 dpi, so as to give different model laptops aprox.
the same trackpoint cursor speed ootb.
Recent versions of udev + hwdb set a POINTINGSTICK_CONST_ACCEL udev property
which can be used to adjust trackpoints which are too slow / too fast
ootb, this commit implements support for that property.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Just setting one of them on a device doesn't guarantee that libinput takes
that as device type.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This reverts commit 0e64837f30.
Rather than a customized touchpad property, let udev handle this and set the
absinfo struct during the normal setup procedures. No need for libinput to
have a custom workaround here.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Not all touchpad kernel drivers supply the x/y resolution. Let the udev hwdb
fix this up where possible and read the value from it.
This is intentionally only used on touchpads, touchscreen devices without
resolution should be considered buggy and fixed in the kernel.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Store it as identifier in the device group, any two devices that have a
the same non-NULL identifier share the group.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
