DM8148 capture with DEI (De-Interlacer Module)?

Hi,

We have a custom DM8148 board and capturing Analog video using V4L2 capture driver.  We would like to use DEI (De-Interlacer Module).  

Q1. How can I enable DEI module?   I have looked at other posts but I couldn't find any clear answer.  Do I have to use OMX capture to use DEI?

Q2: According to TRM, the DEI has mode 0 ~ 3.  How can I select one?

We use EZSDK 5.05.02.00.

Thanks,
tamo2