My problem is very similar, so I decided to not creating another topic.
I have playback working, and now I'm trying to get capture working. I used thisstate file, but unfortunately it does not work.
My environment is almost the same as rohit.mohan has. Only differences are that I have alsa utils in version 1.1.0, and Zedboard rev D. And of course kernel, and ADAU1761 driver in current version (compiled 15.09.2016).
I used commands:
alsactl restore -c 1 -f adau1761.state
arecord -Dhw:ADAU1761 -fS32_LE -d10 -c2 -r48000 s32_le.wav
with 1kHz sinusoid on aux input, but after I opened s32_le.wav file with audacity, samples were empty. Also playing it with
aplay -Dhw:ADAU1761 -fS32_LE -c2 -r48000 s32_le.wav
As I already said, playback works (I tested it with speaker-test and my application), so fpga design should be ok. (I used reference one for Zedboard from ADI)
Have I done something wrong? I tried many different combinations of settings in alsamixer, but with no luck.