diff options
| author | Ping Cheng <pinglinux@gmail.com> | 2025-10-27 13:37:42 -0700 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2025-11-20 22:46:57 +0100 |
| commit | 7953794f741e94d30df9dafaaa4c031c85b891d6 (patch) | |
| tree | 0bfb7106b12ee6d23d6dc1527d9f4af0696002d5 /tools/lib/python/abi/helpers.py | |
| parent | 0678f5630429a5049d7663703b897e1bf8d13cd1 (diff) | |
HID: input: map HID_GD_Z to ABS_DISTANCE for stylus/pen
HID_GD_Z is mapped to ABS_Z for stylus and pen in hid-input.c. But HID_GD_Z
should be used to report ABS_DISTANCE for stylus and pen as described at:
Documentation/input/event-codes.rst#n226
* ABS_DISTANCE:
- Used to describe the distance of a tool from an interaction surface. This
event should only be emitted while the tool is hovering, meaning in close
proximity of the device and while the value of the BTN_TOUCH code is 0. If
the input device may be used freely in three dimensions, consider ABS_Z
instead.
- BTN_TOOL_<name> should be set to 1 when the tool comes into detectable
proximity and set to 0 when the tool leaves detectable proximity.
BTN_TOOL_<name> signals the type of tool that is currently detected by the
hardware and is otherwise independent of ABS_DISTANCE and/or BTN_TOUCH.
This patch makes the correct mapping. The ABS_DISTANCE is currently not mapped
by any HID usage in hid-generic driver.
Signed-off-by: Ping Cheng <ping.cheng@wacom.com>
Cc: stable@kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Diffstat (limited to 'tools/lib/python/abi/helpers.py')
0 files changed, 0 insertions, 0 deletions