Why don't we use VR5500A,
http://www.necel.com./micro/english/product/vr/vr5000series/index.html
it seems amazing and comes with a development kit (teacube) . Have you heard about it?
There is a lot of potential. We can even use
http://www.cirrus.com/en/products/pro/detail/P1061.html
which has DRM but a lot of useful features
we can also use http://www.linuxdevices.com/news/NS7757625666.html or http://linuxdevices.com/news/NS7303651216.html
or
http://linuxdevices.com/news/NS2122942691.html (without the sdk of course)