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


acpi_toshiba -- Toshiba HCI interface


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"


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.


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.


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).


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


The acpi_toshiba driver first appeared in FreeBSD 5.1.


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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