How to create an Alsa mixer for a USB device w/o mixer descriptor?

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Hi,

as posted earlier, I've got a USB device (Fast Track Ultra 8R) wich 
*has* a mixer unit but doesn't have a descriptor for it. It's operated 
by standard control messages. Although I'm specifically interested in 
my  device, I guess there are many more USB interfaces out there with 
similar issues.

So in general:
What's the best way to build a Alsa mixer for such devices. Should one 
bypass all the descriptor parsing and build a mixer specifically for the 
device in interest? Or should one think about  passing a "fake" 
descriptor to the mixer build process?

Any ideas?


Kind regards,

Felix
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