I took the _DSM lookup code from Brandon and moved it to generic acpi drivers directory so it can be accessed from any driver.
I then implemented a fixed-regulator in ACPI using the _DSM lookups for the regulator parameters.
This is obviously all prototype stuff until upstream/UEFI guys make a decision on _DSM vs _PRP and also unified key/value fetching.
ASL patch will follow.
Graeme