I have finally managed to release some sort of a GTK control panel for the u24mixer
I have finally released a fully functional module that implements all the mixer controls on the U24 card.
If anything doesn't work for you, or the wrong values show. Please notify me so I can fix it. I were unable to test quite a lot of the functionality since I don't have any digital audio equipment.
I have finally managed to release a version where the mixer part is cleaned up.
So now all the none working mixer controls are removed. So only the volume remains. This have also been fixed, so the volume is fully functional now.
I have now moved the code into the mixer part of the snd-usb-audio module. The volume adjustments can be made using a standard alsa mixer. It's in no way clean. But it works, even when using the soundcard.
This is my first try on creating a mixer for the U24 USB soundcard.
For now you have to unload the snd-usb-audio module to be able to send messages to the soundcard. I will find a solution to this somehow. Just take this version for a starter.