The
acpiwmi driver provides an ACPI interface for Windows Management Instrumentation (WMI). The ACPI WMI interface is typically used to support vendor specific features found in various laptops.
The following WMI mappings are supported:
wmihp
Hewlett-Packard laptops
The functionality varies from vendor to vendor. Typically the interface is used for function and hotkey handling, but additional features may be present.