With some upcoming changes we need this function for device float coordinates
as well.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This has no real effect just yet because we don't use a touchpad's dpi
anywhere in the touchpad code. Only the acceleration code wants it but all
touchpads use the same acceleration method, and that one doesn't care about
the dpi.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This duplicates the code so we can change it for touchpads without affecting
mice.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This was badly since the factor was the ratio of "dpi:default dpi"
Most devices don't need it, so storing it in all filters event though we only
use it for some devices is confusing. Now that we have the dpi stored
directlyconfusing. Now that we have the dpi stored directly we might as well
use that.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Currently unused, will be used in the future.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This requires to expand the blacklisting to be a bit more specific so we don't
initialize dwt config on devices that won't need it.
https://bugs.freedesktop.org/show_bug.cgi?id=99140
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
The Elantech touchpad on my Asus Vivobook doesn't release BTN_TOOL_FINGER on
up. If the touchpad was used before libinput initializes, the kernel filters
the event because its state is already set. We never receive it and keep
ignoring all events until the first switch to BTN_TOOL_DOUBLETAP and back.
On touchpad init sync the BTN_TOOL_FINGER state and set it accordingly. This
is the only event that can be legitimately down on init. We don't care about
BTN_TOUCH because ignoring an ongoing touch on init is generally a good idea
and we can ignore any multifinger gesture as well.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
We have one. Yay. Lucky us. Go forth and celebrate.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
Not that it really matters, but given we're already setting it anyway...
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
This touchpad has cursor jumps for 2-finger scrolling that also affects the
single-finger emulation. So disable any multitouch bits on this device and
disallow the 2-finger scroll method. This still allows for 2-finger
tapping/clicking.
https://bugs.freedesktop.org/show_bug.cgi?id=91135
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Move the code from the touchpad code into the more generic evdev code
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Fix the kernel driver or get a udev override in place. Tablets not having a
physical size is not ok.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Avoids parsing issues when we're in different locales
https://bugs.freedesktop.org/show_bug.cgi?id=98828
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
We were reading this property in the udev backend, but not in the path
backend.
Reported-by: Thomas Olszak <olszak.tomasz@gmail.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Taking the last 4 points means factoring in a coordinate that may be more than
40ms in the past - or even more when the finger moves slowly and we don't get
events for a while. This makes the pointer more sluggish and slower to catch up
with what the finger is actually doing.
We already have the motion hysteresis as a separate item to prevent jumps (and
thus adds some delay to the movement), the calculation over time doesn't
provide enough benefit to justify the sluggish pointer.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
center + diff is the input coordinate. Simplify the code so it's clear what
we're returning. And document the function to explain what it does.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Announces 4 slots but only sends data for the first two. This causes libinput
to miss three-finger actions (we don't look at BTN_TOOL_TRIPLETAP if we have
3 or more slots).
https://bugs.freedesktop.org/show_bug.cgi?id=98100
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Not all mice have a click angle with integer degrees. The new
MOUSE_WHEEL_CLICK_COUNT property specifies how many clicks per full rotation,
the angle can be calculated from that.
See https://github.com/systemd/systemd/pull/4440 for more information
CLICK_COUNT overrides CLICK_ANGLE, so we check for the former first and then
fall back to the angle if need be. No changes to the user-facing API.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Same as the HP Compat 8510, it doesn't send BTN_TOOL_DOUBLETAP/TRIPLETAP. This
may be a general issue with those series but they're 6 years old now, so
it's questionable to spend extra effort detecting them.
https://bugs.freedesktop.org/show_bug.cgi?id=98538
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
A joystick has ID_INPUT_JOYSTICK *and* ID_INPUT set, so we need to check for
both.
https://bugs.freedesktop.org/show_bug.cgi?id=98009
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
No functional changes, just to filter out devices that don't match
immediately.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
silence clang warning:
evdev-mt-touchpad.c:1017:7: warning: using floating point absolute value
function 'fabs' when argument is of integer type [-Wabsolute-value]
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Fixes the respective clang warnings
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Some trackpoints, notably the one on the Lenovo T460s have a tendency to send
the odd event even when they're not actually used. Trackpoint events trigger
palm detection (see 0210f1fee1) and thus effectively disable the touchpad,
causing the touchpad to appear nonresponsive.
Fix this by requiring at least 3 events from a trackpoint before palm
detection is enabled. For normal use it's hard enough to trigger a single
event anyway so this should not affect the normal use-case.
https://bugzilla.redhat.com/show_bug.cgi?id=1364850
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
INPUT_PROP_BUTTONPAD is not set on this device and RMI4 which should fix this
is a bit too far into the future at this point. Hack around it.
https://bugs.freedesktop.org/show_bug.cgi?id=97147
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
So far we've relied on the wacom kernel module to do touch arbitration for us
but that won't be the case in upcoming kernels. Implement touch arbitration in
userspace by pairing the two devices and suspending the touch device whenever
a tool comes into proximity.
In the future more sophisticated arbitration can be done (e.g. only touches
which are close to the pen) but let's burn that bridge when we have to cross
it.
Note that touch arbitration is "device suspend light", i.e. we leave the
device enabled and the fd is active. Tablet interactions are comparatively
short-lived, so closing the fd and asking logind for a new one every time the
pen changes proximity is suboptimal. Instead, we just keep a boolean around
and discard all events while it is set.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
