| 30fb45cc | 03-Apr-2026 |
muhammed Rishal <muhammedrishal7777777@gmail.com> |
bpf: Add fix for Trust Philips SPK6327 (145f:024b) modifier keys
The Trust Philips SPK6327 keyboard (USB ID 145f:024b) has a broken HID
descriptor on interface 1. Byte 101 is 0x00 (Input Array) but
bpf: Add fix for Trust Philips SPK6327 (145f:024b) modifier keys
The Trust Philips SPK6327 keyboard (USB ID 145f:024b) has a broken HID
descriptor on interface 1. Byte 101 is 0x00 (Input Array) but should be
0x02 (Input Variable), causing LCtrl, LAlt, Super, RAlt, RCtrl and
RShift to all report as LShift on Linux.
This BPF fix patches byte 101 at runtime fixing all affected modifier
keys.
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/234
Signed-off-by: muhammed Rishal <muhammedrishal7777777@gmail.com>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| cc3993d3 | 03-Apr-2026 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: Add support for the Huion KeyDial K20 over bluetooth
When connected over bluetooth this device is just different enough that
forcing it into the same source file as the USB connection does
HID: bpf: Add support for the Huion KeyDial K20 over bluetooth
When connected over bluetooth this device is just different enough that
forcing it into the same source file as the USB connection doesn't gain
us much benefit. So let's duplicate this.
Code and tests originally produced by Claude code.
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/work_items/69
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/201
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| af79443b | 03-Apr-2026 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: add a BPF to get the touchpad type
Currently the kernel is scheduled to do this call by itself, but it
requires a kernel v6.18 at least to have the INPUT_PROP set. For older
kernels, we ca
HID: bpf: add a BPF to get the touchpad type
Currently the kernel is scheduled to do this call by itself, but it
requires a kernel v6.18 at least to have the INPUT_PROP set. For older
kernels, we can try to query the property from a HID-BPF probe, and set
a udev property based on that. This way we can provide the information
to old kernels without modifying them.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/220
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| bb8be68d | 03-Apr-2026 |
Benjamin Tissoires <bentiss@kernel.org> |
hid: bpf: hid_bpf_helpers: add helper for having read/write udev properties
We want udev-hid-bpf to be able to set udev properties by printing them
out after the BPF object has been loaded. This all
hid: bpf: hid_bpf_helpers: add helper for having read/write udev properties
We want udev-hid-bpf to be able to set udev properties by printing them
out after the BPF object has been loaded. This allows to make a query to
the device, and set a udev prop based on the answer.
Because the way udev works, the properties are cleared on bind/unbind,
and we need a way to store them. After several attempts to keep the
property alive without re-running the udev-hid-bpf tool to communicate
with the device, it came out that HID-BPF maps are pinned in the bpffs
and we can then query them.
So the following would export a UDEV property in the bpffs:
EXPORT_UDEV_PROP(HID_FOO, 32);
SEC("syscall")
int probe(struct hid_bpf_probe_args *ctx)
{
const char *foo = "foo";
UDEV_PROP_SPRINTF(HID_FOO, "%s", foo);
return 0;
}
Then, we can debug it with a simple cat:
sudo cat /sys/fs/bpf/hid/.../UDEV_PROP_HID_FOO
0: {['f','o','o',],}
This way, the property is always accessible without talking to the
device
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/220
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| fc778f21 | 03-Apr-2026 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: handle injected report descriptor in HID-BPF
udev-hid-bpf is now capable of injecting the parsed report descriptor in
the program. Provide the macros required for it.
Sync up from udev-hi
HID: bpf: handle injected report descriptor in HID-BPF
udev-hid-bpf is now capable of injecting the parsed report descriptor in
the program. Provide the macros required for it.
Sync up from udev-hid-bpf commits:
bpf: inject the parsed report descriptor in HID_REPORT_DESCRIPTOR
hid_bpf_helpers: provide iterator macros for walking the HID report descriptor
hid_bpf_helpers: Add extract_bits function
bpf: add hid_usages.h
bpf: move the report descriptor structs into their own header
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/221
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/228
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 462240ac | 03-Apr-2026 |
Peter Hutterer <peter.hutterer@who-t.net> |
HID: bpf: add helper macros for LE/BE conversion
BPF has bpf_htons and friends but those only work with data in Big
Endian format. HID is little endian so we need our own macros.
Link: https://gitl
HID: bpf: add helper macros for LE/BE conversion
BPF has bpf_htons and friends but those only work with data in Big
Endian format. HID is little endian so we need our own macros.
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/221
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| ed1d6d21 | 03-Apr-2026 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: hid_bpf_helpers: provide a cleanup functions
Combination of 2 udev-hid-bpf commits:
bpf: hid_bpf_helpers: provide a cleanup function for hid_bpf_release_context
bpf: helpers: add guard(bpf
HID: bpf: hid_bpf_helpers: provide a cleanup functions
Combination of 2 udev-hid-bpf commits:
bpf: hid_bpf_helpers: provide a cleanup function for hid_bpf_release_context
bpf: helpers: add guard(bpf_spin) macro
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/221
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| e43d74d6 | 03-Apr-2026 |
Peter Hutterer <peter.hutterer@who-t.net> |
HID: bpf: fix some signed vs unsigned compiler warnings
On udev-hid-bpf, we are now getting warnings here, shut them off.
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests
HID: bpf: fix some signed vs unsigned compiler warnings
On udev-hid-bpf, we are now getting warnings here, shut them off.
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/227
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 3b86c87f | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: fix typo in HID usage table
We could go to the USB consortium, but it's probably
easier that way.
And update HID usage table json generated file from
https://usb.org/sites/default/files/h
HID: bpf: fix typo in HID usage table
We could go to the USB consortium, but it's probably
easier that way.
And update HID usage table json generated file from
https://usb.org/sites/default/files/hut1_6.pdf updated: 01/30/2025
Reported-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/191
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 71570e8f | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: add the Huion Kamvas 27 Pro
Same issues with a secondary tip switch instead of secondary barrel
switch as the Kamvas 19.
Copy the stable Kamvas 19 support back into testing and add the vi
HID: bpf: add the Huion Kamvas 27 Pro
Same issues with a secondary tip switch instead of secondary barrel
switch as the Kamvas 19.
Copy the stable Kamvas 19 support back into testing and add the vid/pid
for the Kamvas 27.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/189
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 5e3e8f1b | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: add heuristics to the Huion Inspiroy 2S eraser button
When pressing the phsyical eraser button (remapped by us to the
Secondary Barrel Switch) while the tip is down, the device
gives us se
HID: bpf: add heuristics to the Huion Inspiroy 2S eraser button
When pressing the phsyical eraser button (remapped by us to the
Secondary Barrel Switch) while the tip is down, the device
gives us several false reports with a Tip Switch 0:
press| |release
SBS: [0 0 ... 1 1 1 ... 1 0 0 0 0 0 0 ...]
TS: [1 1 ... 1 0 1 ... 1 1 0 0 0 1 1 ...]
In both press/release the number of Tip Switch 0 reports can be up to 4
and *sometimes* the Tip Switch is released in the same report
as the button press/release event.
Paper over this by forcing the tip down for a few reports if it was down
before the button toggled.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/195
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 88b5468f | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: Add support for XP-Pen Deco02
Modifies report to have tablet buttons report as buttons, rather than as
keyboard key combinations. The dial is also converted to a relative
input, using the
HID: bpf: Add support for XP-Pen Deco02
Modifies report to have tablet buttons report as buttons, rather than as
keyboard key combinations. The dial is also converted to a relative
input, using the dedicated bit previously reserved for modifier key
information.
Signed-off-by: Hannah Pittman <dev@hannahl.co.uk>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/203
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 8ba327d5 | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: Add support for the XP-Pen Deco 01 V3
This device needs a fix for the tilt range on the pen report descriptor
and the usual conversion of the pad keys from the firmware's hardcoded
keyboar
HID: bpf: Add support for the XP-Pen Deco 01 V3
This device needs a fix for the tilt range on the pen report descriptor
and the usual conversion of the pad keys from the firmware's hardcoded
keyboard shortcuts to actual pad buttons.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/185
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 040adbe8 | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: Add support for the Waltop Batteryless Tablet
Several bugs as outlined in udev-hid-bpf#66 and udev-hid-bpf!198:
- pressure curve is far from linear
- tilt range is ±60, not ±127
- pressing
HID: bpf: Add support for the Waltop Batteryless Tablet
Several bugs as outlined in udev-hid-bpf#66 and udev-hid-bpf!198:
- pressure curve is far from linear
- tilt range is ±60, not ±127
- pressing the second button sets both tip down and
barrel switch
Fix the second button by adding a Secondary Barrel Switch in the
existing padding and check for the tip down/barrel switch down combo.
When both values become true at the same time, set the Secondary Barrel
Switch instead.
Implement a custom pressure curve that maps the hardware range 0-102
linearly to the logical range 0-1224, and maps the hardware range
103-2047 logarithmically to the logical range 1232-2047. This mapping
isn’t perfect, but it’s way more natural than the stock configuration.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Jan Felix Langenbach <JanFelix.Langenbach@protonmail.com>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/200
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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| 029dff1c | 18-Nov-2025 |
Benjamin Tissoires <bentiss@kernel.org> |
HID: bpf: Add fixup for Logitech SpaceNavigator variants
The 3Dconnexion SpaceNavigator HID report descriptor declares its axis
data to be "relative" when it is actually "absolute". This quirk was
HID: bpf: Add fixup for Logitech SpaceNavigator variants
The 3Dconnexion SpaceNavigator HID report descriptor declares its axis
data to be "relative" when it is actually "absolute". This quirk was
addressed in the kernel in 2.6.33, but some SpaceNavigator variants have
a slightly different report descriptor whose axis input items are at
different offsets than those assumed by the kernel fixup.
Add a BPF fixup to handle both sets of offsets for known SpaceNavigator
variants if the descriptor has not already been fixed by the kernel.
Signed-off-by: Curran Muhlberger <curran@cs.cornell.edu>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/181
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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