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This patch adds the remaining features to the driver: MIDI I/O and ALSA mixer controls. A raw MIDI device is created, supporting one input and one output port. The implementation handles the device-specific 9-byte packet format for both sending and receiving MIDI data, using bulk URBs and workqueues for processing. ALSA kcontrols are added to the mixer interface, allowing user-space control over the audio routing matrix (e.g., selecting analog/digital sources for capture channels, and routing playback streams to different outputs). A read-only control to display the current sample rate is also included. Finally, the stub routing functions are replaced with the full logic to apply the user-selected mixer settings to the audio streams. With this commit, the driver is feature-complete. Signed-off-by: Šerif Rami <ramiserifpersia@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20250814172222.9448-6-ramiserifpersia@gmail.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
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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.