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ACPI_TOSHIBA(4)       DragonFly Kernel Interfaces Manual       ACPI_TOSHIBA(4)


NAME

     acpi_toshiba -- Toshiba HCI interface


SYNOPSIS

     To compile this driver into the kernel, place the following line in your
     kernel configuration file:

           device acpi_toshiba

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

           acpi_toshiba_load="YES"


DESCRIPTION

     HCI is Toshiba's Hardware Control Interface which is somewhat uniform
     across their models.  The acpi_toshiba driver allows the user to manipu-
     late HCI-controlled hardware using a number of sysctl(8) variables.


SYSCTL VARIABLES

     The following sysctls are currently implemented:

     hw.acpi.toshiba.force_fan
             Causes active cooling to be forcibly enabled (`1') or disabled
             (`0') regardless of the current temperature.

     hw.acpi.toshiba.video_output
             Sets the active display to use according to a bitwise OR of the
             following:

             0       No display
             1       LCD
             2       CRT
             4       TV-Out

             Only some systems (i.e., the Libretto L5) support video switching
             via this hardware-specific driver.  Use the acpi_video(4) driver
             for generic video output support.

     hw.acpi.toshiba.lcd_brightness
             Makes the LCD backlight brighter or dimmer (higher values are
             brighter).

     hw.acpi.toshiba.lcd_backlight
             Turns the LCD backlight on and off.

     hw.acpi.toshiba.cpu_speed
             Sets the CPU speed to the specified speed.  This provides func-
             tionality similar to the hw.acpi.cpu.throttle_state variable.
             Higher sysctl values mean lower CPU speeds.

     Defaults for these variables can be set in sysctl.conf(5), which is
     parsed at boot-time.


LOADER TUNABLES

     The hw.acpi.toshiba.enable_fn_keys tunable enables or disables the func-
     tion keys on the keyboard.  Function keys are enabled by default.

     This behaviour can be changed at the loader(8) prompt or in
     loader.conf(5).


SEE ALSO

     acpi(4), acpi_video(4), loader.conf(5), sysctl.conf(5), sysctl(8)


HISTORY

     The acpi_toshiba driver first appeared in FreeBSD 5.1.


AUTHORS

     The acpi_toshiba driver was written by Hiroyuki Aizu <aizu@navi.org>.
     This manual page was written by Philip Paeps <philip@FreeBSD.org>.

DragonFly 3.5                  November 11, 2009                 DragonFly 3.5

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