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Brian Howard 409d19050c HID: multitouch: add quirks for Lenovo Yoga Book 9i 
[ Upstream commit 822bc5b374 ]

The Lenovo Yoga Book 9i is a dual-screen laptop, with a single composite
USB device providing both touch and tablet interfaces for both screens.
All inputs report through a single device, differentiated solely by report
numbers. As there is no way for udev to differentiate the inputs based on
USB vendor/product ID or interface numbers, custom naming is required to
match against for downstream configuration. A firmware bug also results
in an erroneous InRange message report being received after the stylus
leaves proximity, blocking later touch events. Add required quirks for
Gen 8 to Gen 10 models, including a new quirk providing for custom input
device naming and dropping erroneous InRange reports.

Signed-off-by: Brian Howard <blhoward2@gmail.com>
Tested-by: Brian Howard <blhoward2@gmail.com>
Tested-by: Kris Fredrick <linux.baguette800@slmail.me>
Reported-by: Andrei Shumailov <gentoo1993@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220386
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:19:54 -05:00
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README 

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.