Mac OS X driver

The Mac OS X driver can be found at /System/Library/Extensions/AppleCameraInterface.kext. Metadata:

CFBundleIdentifier: com.apple.driver.AppleCameraInterface
CFBundleVersion: 1.0.0
IOClass: AppleCamIn
IOPCIMatch: 0x157014E4
IOPCITunnelCompatible: true
IOProbeScore: 3096
IOProviderClass: IOPCIDevice

Looking at the strings in the kext bundle, there are references to DDR memory, loading of firmware, an IPC queue, I2C, ACPI and ASPM. There may be different raw, metadata and output buffers. It may be able to do face-detection.

Working with kexts

• Kernel Extensions Programming Topics (Apple)
• Resolving kernel symbols
• A Kernel Extension ... by hand
• KEXT Debugging on Mac

Enabling debug output on the AppleCamera driver

Enter the following command as superuser and reboot the system: nvram boot-args="camLogging=0xffffffff"