Hi,
some of the devices the caiaq driver supports have special hardware features such as switchable ground lift, input impedance selection or other, hardware-specific features. On both Windows and MacOSX there are special tools to set those features but the ALSA driver still lacks support for them which I want to change soon. However, I couldn't find a generic way to do that. I was thinking about a sysfs entry which is attached to the sound card instance but didn't find a driver which did similar things.
Also, I'd like to support the LEDs and displays on the devices and was wondering which interface to choose for that. I've got a patch ready which uses the generic led subsystem, but that approach seems to be a bit ugly as I end up having one entry per led on each device in one single folder. Any idea of a better way?
Thanks, Daniel