mic input not working on tps65950/dm3725 board

Porting to a new board omap dm3730 and tps65950  to omap dm3725 and tps65950.

config is the same for new kernel.   Audio output  Handsfree works on both boards.

alsamixer controls  on kernel 3.0.8 does not show the following.  Was this removed or do I have something  set wrong?

These controls appear on the earlier working version.

name='ALC Attack Release Capture Switch'   
name='ALC Attack Release Capture Volume'   
name='ALC Max Min Capture Switch'          
name='ALC Max Min Capture Volume'          
name='ALC Wait Time Capture Switch'        
name='ALC Wait Time Capture Volume'        

Hardware is essentially the same as a previous version built with 2.6.33 kernel.

recording from mic creates a file  that changes with the input but  plays back as silence.

strange coding looks like a single bit changing at the signal rate. Sine wave input.

hex values;   808080808080808080808080808080807F7F7F7F7F7F7F7F7F7F7F7F7F7F7F7F80808080...  repeating pattern that changes with amplitude and frequency

Any idea what I might try?

thanks