This device is already fixed by "HID: do not assume HAT Switch
logical max < 8", but for people without the fix already, having the
HID-BPF locally can fix the device while they wait for their
distribution to update.
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-9-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This tablets gets a lot of things wrong:
- the secondary button is reported through Secondary Tip Switch
- the third button is reported through Invert
Fortunately, before entering eraser mode, (so Invert = 1),
the tablet always sends an out-of-proximity event.
So we can detect that single event and:
- if there was none but the invert bit was toggled: this is the
third button
- if there was this out-of-proximity event, we are entering
eraser mode, and we will until the next out-of-proximity.
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-8-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
When using the XBox Wireless Controller Elite 2 over Bluetooth,
the device exports the paddle on the back of the device as a single
bitfield value of usage "Assign Selection".
The kernel doesn't process those usages properly and report KEY_UNKNOWN
for it.
SDL doesn't know how to interprete that KEY_UNKNOWN and thus ignores the
paddles.
Given that over USB the kernel uses BTN_TRIGGER_HAPPY[5-8], we
can tweak the report descriptor to make the kernel interprete it properly:
- we need an application collection of gamepad (so we have to close the
current Consumer Control one)
- we need to change the usage to be buttons from 0x15 to 0x18
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-7-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This pen is compatible with multiple Wacom tablets, but we only add support
for the Intuos Pro 2 M, as this is the one our user reported the bug
against.
We can not generically add all compatible Wacom tablets as we are
writing the offsets by hand.
The point of this HID-BPF program is to work around a firmware limitation
where the pressure is repeated every other report.
Given that we know this will happen, we can change the first new pressure
information with the mean compared to the previous one. This way we
smooth the incoming pressure without losing information.
Cc: Ping Cheng <pinglinux@gmail.com>
Cc: Jason Gerecke <killertofu@gmail.com>
Cc: Aaron Armstrong Skomra <skomra@gmail.com>
Cc: Joshua Dickens <Joshua@joshua-dickens.com>
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-6-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Duplicate of commit 0db117359e ("HID: add quirk for 03f0:464a HP Elite
Presenter Mouse"), but in a slightly better way.
This time we actually change the application collection, making clearer
for userspace what the second mouse is.
Note that having both hid-quirks fix and this HID-BPF fix is not a
problem at all.
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-4-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Same problem than the Artist 24: the second button on the pen is treated
like an eraser.
But the problem is even worse this time. There is an actual eraser at
the tail of the pen.
The compensation of the coordinates was done by Martin
Signed-off-by: Martin Sivak <mars@montik.net>
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-3-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit adds a fix for XPPen Artist 24 where the second button on
the pen is used as an eraser.
It's a "feature" from Microsoft, but it turns out that it's actually
painful for artists. So we ship here a HID-BPF program that turns this
second button into an actual button.
Note that the HID-BPF program is not directly loaded by the kernel itself
but by udev-hid-bpf[0]. But having the sources here allows us to also
integrate tests into tools/testing/selftests/hid to ensure the HID-BPF
program are actually tested.
[0] https://gitlab.freedesktop.org/libevdev/udev-hid-bpf
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-2-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
