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ACPI_TOSHIBA(4) FreeBSD 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
manipulate 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
functionality 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
function keys on the keyboard. Function keys are enabled by default.
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>.
FreeBSD 14.0-RELEASE-p6 February 8, 2010 FreeBSD 14.0-RELEASE-p6