I'm having audio issues with my Dell Vostro 2520's microphone with VoodooHDA
The internal microphone isn't detected, yet the microphone audio port is detected, and works.
According to Windows and Dell, my laptop has the Cirrus Logic CS4213 codec in it, so if that's important, there it is.
I am on Mavericks 10.9.5, since that works the best on this laptop, but would be open to try newer versions if things work well enough.
I can provide my DSDT if needed.