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We emulate the DJ functionality through the driver. The receiver supports "fake device arrival" which behaves like the probing of DJ devices. A non-unifying receiver has 2 USB interfaces, the first one generates standard keypresses and is compatible with the USB Keyboard Boot Subclass. The second interface sends events for the mouse and special keys such as the consumer-page keys. Events are split this way for BIOS / Windows / generic-hid driver compatibility. This split does not actually match with which device the event originate from, e.g. the consumer-page key events originate from the keyboard but are delivered on the mouse interface. To make sure the events are actually delivered to the dj_device representing the originating device, we pick which dj_dev to forward a "regular" input-report to based on the report-number, rather then based on the originating interface. Co-authored-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
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 Restructured Text 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.