kernel kernel wrote:

Requesting guidance on how to implement the missing mic input support for this Asus Xonar card. I've downloaded the relevant datasheets but am unsure how to proceed.

Rip out the card, and look (or eletrically trace) how the CMI8788's GPIOs and the CS4245's inputs/outputs are connected.

Test how to configure and set the GPIOs so that the mic works. Also check the register configuration of the CS4245.

Regards, Clemens