Apple Onboard Audio driver

modulename: snd-aoa.ko

configname: CONFIG_SND_AOA

Linux Kernel Configuration
└─>Device Drivers
└─>Sound
└─>Advanced Linux Sound Architecture
└─>Apple Onboard Audio driver
└─>Apple Onboard Audio driver
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This option enables the new driver for the various
Apple Onboard Audio components.

source code:
sound/aoa/core/
selects
CONFIG_SND_PCM