Xilinx-XUPV2P- AC97 Audio BSP

Hi all,
I'm using XUPV2P xilinx board. In that audio codec chip for AC97
support is avaliable. I plan to use linux-2.4.26 as RTOS. Now there are
linux BSP availble from xilinx for ps/2, ethernet, systemACE Flash etc.
But there is no linux BSP available for AC97 Audio codec chip LM4550.
But general AC97 codec drivers, I could see in linux distributions. How
can I modify the general driver to be xilinx board specific BSP. so
that after libgen I'll copy this drivers into kernel and cross compile
it.
Regards
Prakash