acpi-call-linux-module 3.17 Linux kernel module to perform ACPI method calls

This simple Linux kernel module allows calls from user space to any ACPI method provided by your computer's firmware, by writing to /proc/acpi/call. You can pass any number of parameters of types ACPI_INTEGER, ACPI_STRING, and ACPI_BUFFER.

It grants direct and undocumented access to your hardware that may cause damage and should be used with caution, especially on untested models.