The current release of ACPICA is version 20100702.
There is no Linux-specific ACPICA source code package. Instead, new ACPICA code is released to
Linux by the ACPICA team via the following procedure:
1) The Linux version of ACPICA is created from the UNIX release package --
the code is converted to Linux format via an ACPICA utility (AcpiSrc) and lindent.
2) Individual patches are created, merged with the current Linux source
tree, and released to Linux.
The Linux versions of the user-space ACPICA utilities (iASL, AcpiExec, AcpiXtract)
can be built from the
UNIX ACPICA source code package, found at the UNIX Source Code page:
UNIX Source Code Packages