I need to capture audio with the Dragonboard. I have read the guide Stereo connector and audio routing application note and it has helped a lot to me to understanding the hardware set up. The guide explains how to record and play back audio using the Amixer commands in the terminal.
I would like to record audio “programatically”, I mean, create a user-space device driver, like the solution purposed in this post.
I’ve searched the document in the kernel documentation page but I couldn’t find it on a such large list which I’m not familiar with.
Thank you all guys!