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With v6.11+, we can actually call hid_hw_output_report() and put the device into raw mode, thus getting accurate events without being messed up. Technically we could do the same on v6.10, but given that wayland, gnome and KDE are still not capable of handling the dial, and that v6.10 is EOL, we can safely save a little bit of compilation by only allowing v6.11+. We can easily export the battery information to userspace by adding a dedicated report. However, we need to cheat on the kernel to force it not to query the battery by making the physical collection a stylus. The kernel will then only rely on the events it gets from the device. Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/133 Acked-by: Jiri Kosina <jkosina@suse.com> Link: https://patch.msgid.link/20250207-bpf-import-2025-02-07-v1-7-6048fdd5a206@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.