I'm writing some firmware for a USB microphone array with multiple configurations, and I'm wondering if it's possible to tell ALSA which configuration to use in a module option or something (device_setup, perhaps).
I've been looking through usbaudio.c in the kernel source (2.6.28-11-generic from the ubuntu Jaunty package), and I can't find any generic device configuration like that.
If this is not possible, does anyone have any recommendations on how to implement this? I can imagine doing it using quirks for this particular USB_ID, but this seems like a fairly generic type of capability, so I'd like to make it general if possible.
If anyone is wondering *why* I want multiple configurations: it's for bandwidth management. I have 8 channels, but I want to be able to sample 1 channel as fast as possible without wasting bandwidth on the other 7. I couldn't figure out a way to do that with a single configurations. Please let me know if you know one. ;-)
Thanks, Cameron.