I am currently using the linux kernel 2.6.29 with the mcf54451. I want to interface the SSI bus with a cs4202 audio codec. This chip conforms to the ac-link protocol, but I am not sure if there is driver support. It looks like there is some built in driver support in ALSA, but I'm not sure if this is true. If not I will need to get a driver for it and I have found none. Any suggestions?