Copy the keys
CommonPeripheralDSP and
PathMaps from LegacyHDA to AppleHDA.kext/Contents/Resources/Platforms.xml (replace original contents);
Copy the keys
LayoutID and
PathMapRef (they're inside key
Layouts) to AppleHDA.kext/Contents/Resources/layout
??.xml (replace original contents or create a new file if it doesn't exist,
?? = LayoutID);
Copy the dict from key
HDAConfigDefault (it's inside key
HDA Hardware Config Resource) to key
HDAConfigDefault in AppleHDA.kext/Contents/PlugIns/AppleHDAHardwareConfigDriver.kext/Contents/Info.plist (paste as child);
Use
PlistEdit Pro to edit the plist files.
If the codec isn't ALC889A or AD1988B you will also need to edit the file AppleHDA.kext/Contents/MacOS/AppleHDA (binary).
For Realtek (ALC88x) replace the 4 instances of
85 08 EC 10 (inverted bytes of codec 0885 and vendor 10EC) by your codec, for example,
88 08 EC 10.
Use an hex editor (
0xED) or the command
Code:
sudo perl -pi -e 's|\x85\x08\xec\x10|\x88\x08\xec\x10|g' /System/Library/Extensions/AppleHDA.kext/Contents/MacOS/AppleHDA
For Analog Devices (AD) replace the 4 instances of
8B 19 D4 11 by your codec
Code:
sudo perl -pi -e 's|\x8b\x19\xd4\x11|\x9b\x98\xd4\x11|g' /System/Library/Extensions/AppleHDA.kext/Contents/MacOS/AppleHDA
If you have a patched AppleHDA for Snow Leopard (10.6.7 or older), instead of taking values from LegacyHDA you will get them from AppleHDA plug-ins.
CommonPeripheralDSP, PathMaps, LayoutID and PathMapRef come from AppleHDA.kext/Contents/PlugIns/AppleHDAPlatformDriver.kext/Contents/Info.plist
The dict in HDAConfigDefault comes from AppleHDA.kext/Contents/PlugIns/AppleHDAController.kext/Contents/Info.plist
Snow Leopard 10.6.8 AppleHDA has the same structure as Lion one.
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