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| author | Šerif Rami <ramiserifpersia@gmail.com> | 2025-08-14 20:22:20 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2025-08-15 18:53:47 +0300 |
| commit | 67afec157fe63d37f0d8f46fbe11a61364718ece (patch) | |
| tree | 1412552cbf2a1e4a69c22b7da6e948d0e86baf7a /include/linux/workqueue_api.h | |
| parent | c1bb0c13e430623c26543baae5bb9ae21139db87 (diff) | |
| download | linux-67afec157fe63d37f0d8f46fbe11a61364718ece.tar.xz | |
ALSA: usb-audio: us144mkii: Add MIDI support and mixer controls
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
Diffstat (limited to 'include/linux/workqueue_api.h')
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