• Azael Avalos's avatar
    toshiba_acpi: Add /dev/toshiba_acpi device · fc5462f8
    Azael Avalos authored
    There were previous attempts to "merge" the toshiba SMM module to the
    toshiba_acpi one, they were trying to imitate what the old toshiba
    module does, however, some models (TOS1900 devices) come with a
    "crippled" implementation and do not provide all the "features" a
    "genuine" Toshiba BIOS does.
    
    This patch adds a new device called toshiba_acpi, which aim is to
    enable userspace to access the SMM on Toshiba laptops via ACPI calls.
    
    Creating a new convenience _IOWR command to access the SCI functions
    by opening/closing the SCI internally to avoid buggy BIOS, while at
    the same time providing backwards compatibility.
    
    Older programs (and new) who wish to access the SMM on newer models
    can do it by pointing their path to /dev/toshiba_acpi (instead of
    /dev/toshiba) as the toshiba.h header was modified to reflect these
    changes as well as adds all the toshiba_acpi paths and command,
    however, it is strongly recommended to use the new IOCTL for any
    SCI command to avoid any buggy BIOS.
    Signed-off-by: default avatarAzael Avalos <coproscefalo@gmail.com>
    Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
    fc5462f8
ioctl-number.txt 12.7 KB