Synatics touchpads only have 2 slots, but support TRIPLETAP and above. When
the third finger touches, the kernel may end the second slot and re-start it
with the coordinates of the third touch in the next frame. The event sequence
is something like:
ABS_MT_SLOT 0
ABS_MT_POSITION_X 4000
ABS_MT_POSITION_Y 4000
ABS_MT_PRESSURE 78
ABS_MT_SLOT 1
ABS_MT_TRACKING_ID -1
ABS_X 4000
ABS_Y 4000
ABS_PRESSURE 78
BTN_TOOL_DOUBLETAP 0
BTN_TOOL_TRIPLETAP 1
--- SYN_REPORT (0) ----------
ABS_MT_SLOT 0
ABS_MT_POSITION_X 4000
ABS_MT_POSITION_Y 4000
ABS_MT_PRESSURE 78
ABS_MT_SLOT 1
ABS_MT_TRACKING_ID 55
ABS_MT_POSITION_X 2000
ABS_MT_POSITION_Y 2000
ABS_MT_PRESSURE 72
ABS_X 4000
ABS_Y 4000
ABS_PRESSURE 78
--- SYN_REPORT (0) ----------
libinput usually ignores any BTN_TOOL_* <= num_slots since we expect
that the slot values are valid. Make an exception for the serial synaptics
touchpads. If a touch has ended when the fake touch goes above active-slots
(but still within num-slots), move that touch back to UPDATE. This ensures the
right number of nfingers_down. When the touch restarts again in the next
frame, tp_begin_touch() will skip over re-initializing it because it's already
in UPDATE anyway.
Note that at this point this only handles the transition _to_ TRIPLETAP, not
from TRIPLETAP to DOUBLETAP. Need to wait for this to be seen in the wild
first.
https://bugs.freedesktop.org/show_bug.cgi?id=91352
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Hallelujah-expressed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Hallelujah-expressed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
On some devices we need to set more than one flag, i.e. make it into actual
flags.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Hallelujah-expressed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Regression introduced in 8302860.
Reading the DPI before evdev_configure_device makes it lose on the trackpoint
flag, causing libinput to ignore the POINTINGSTICK_CONST_ACCEL property.
8302860 moved it up so we can init accel based on the DPI, this patch simply
moves istart t before the acceleration is initialized.
https://bugs.freedesktop.org/show_bug.cgi?id=91369
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Removes some dead assignments, an unused function, and
uses %d format specifier for int.
Signed-off-by: Thomas Hindoe Paaboel Andersen <phomes@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
obsolete since 8658ff159d. And once we remove
that all we checkf or is Apple models which we set a resolution for in
systemd. So that check is obsolete now too.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Only keep those that we changed locally, which makes it much easier to detect
what we're actually changing.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Thumb detection interfered with gestures a fair bit but it shouldn't. A pinch
gesture with a thumb is a fairly natural move so we shouldn't cancel that.
A swipe gesture with a thumb on the touchpad - well, don't do that. No need
for code here.
Reported-by: Carlos Garnacho <carlosg@gnome.org>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Carlos Garnacho <carlosg@gnome.org>
3finger swipe, pinch and spread. While we expect the pinch/spread to have a
zero angle, the discrete coordinates we use cause some angle, but below 1
degree.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
For Elantech touchpads, we know that the resolution is 31u/mm (800dpi) for
v1-v3 firmware. Set this as a hint until we get either the kernel or systemd
to set this for us.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Now that we have all devices init a fixed resolution we don't need code to
handle custom cases anymore.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
The previous approach of using the axis ranges and approximating parameters
based on the x/y axis range clutters up the code and is generally unreliable.
If we look at Synaptics touchpads, the resolution ranges from 42 to 130 while
the axes stay the same axis range. Other touchpads likely have a similar
variation across the various models.
Let's make this simpler in code: unless we know otherwise, simply assume a
default-sized touchpad.
Anything that deviates from that can be fixed with the new hwdb entries to
provide a more correct setting.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Some model-specific information isn't available through udev properties. This
callout is used to query the device directly and set a property that we can
then match on for the hwdb entries.
This is geared for Elantech and ALPS touchpads where the firmware version is
the interesting bit. The udev rule is added already to match on that, note
that the callout doesn't do anything at this point. The various
touchpad-related things will be added separately.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
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>
This is an old recording and predates properties. It's not a clickpad, we
assume INPUT_PROP_POINTER is set.
From: https://bugs.freedesktop.org/attachment.cgi?id=57154
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If a device sends other events at startup, those events weren't freed. This
can happen on tablet devices that send proximity events immediately after
DEVICE_ADDED.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The only two callers passed in the fake resolution anyway, so we don't need
extra parameters here.
We don't allow devices with only x or y resolution set, either both or none.
And we can use libevdev_set_abs_resolution() rather than handling absinfo
structs.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
udev requires callout binaries to sit in /lib/udev or otherwise provide an
absolute path. The test suite should work without installing everything first,
so create two rule files - one to install, one with the path to the
$builddir/test
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Most thumbs are detected a few events into the sequence. Work this into parts
of the tapping state machine. Only the most common use-case is handled here -
if the first finger ends up being marked as a thumb, we return to the idle
state and ignore that touch sequence.
At any other state, we handle thumbs like any other finger.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
All touchpad recordings seen so far show that a value above 100 is definitely
a thumb or a palm. Values below are harder to discern, and the same isn't true
for touchpads supporting ABS_PRESSURE instead of ABS_MT_PRESSURE.
The handling of a touch is as outlined in tp_thumb_detect:
* thumbs are ignored for pointer motion
* thumbs cancel gestures
* thumbs are ignored for clickfinger count
* edge scrolling doesn't care either way
* software buttons don't care either way
* tap: only if thumb on begin
The handling of thumbs while tapping is the simplest approach only, more to
come in follow-up patches.
Note that "thumb" is the synonym for "this touch is too big to be a
fingertip". Which means that a light thumb touch will still be counted as a
finger. The side-effect here is that thumbs resting a the bottom edge of the
touchpad will almost certainly not trigger the pressure threshold because
most of the thumb is off the touchpad.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
The touchpads currently all send a default value of 30 for ABS_PRESSURE. For
some tests we want to have a custom pressure but changing all tests isn't
sensible. So hook each device up to send a default value of 30 if it isn't
overridden in the test itself.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
