fujhk(4) [netbsd man page]

FUJBP(4)						   BSD Kernel Interfaces Manual 						  FUJBP(4)

NAME

     fujbp, fujhk -- Fujitsu Brightness, Pointer, and Hotkeys

SYNOPSIS

     fujbp* at acpi?
     fujhk* at acpi?

DESCRIPTION

     Some Fujitsu laptops come with vendor-specific ACPI devices to manage the laptop hotkeys (such as the 'Eco' button), and to control various
     built-in components (such as the display, the touchpad, and the speakers).  The fujbp and fujhk drivers provide support, through these ACPI
     devices, for hotkeys, backlight on/off switch, brightness level control, and pointer on/off switch.

     The following sysctl(8) read/write variables are provided (when hardware support is available):

	   hw.acpi.fujbp0.brightness  Brightness level (integer).

	   hw.acpi.fujbp0.pointer     Pointer switch state (boolean).

	   hw.acpi.fujhk0.backlight   Backlight switch state (boolean).

     Please note, however, that future versions of the drivers may remove these sysctl(8) variables without prior notice.

SEE ALSO

     acpi(4), acpivga(4), sysctl(8), pmf(9), sysmon_pswitch(9)

HISTORY

     The fujbp and fujhk drivers appeared in NetBSD 6.0.

AUTHORS

     Gregoire Sutre <gsutre@NetBSD.org>

CAVEATS

     Brightness level and backlight switch state should be controlled via wsconsctl(8) instead of sysctl(8).

     The sysctl(8) variable hw.acpi.fujbp0.pointer should be replaced by a platform-independent userland control.

BSD
								 February 20, 2011							       BSD

ACPI_VIDEO(4)						   BSD Kernel Interfaces Manual 					     ACPI_VIDEO(4)

NAME

     acpi_video -- ACPI Video Extensions driver

SYNOPSIS

     device acpi_video

DESCRIPTION

     This driver uses the ACPI Video Extensions to control display switching and backlight brightness.	The availability of the sysctl(8) vari-
     ables depends on the functions offered by the host's ACPI implementation.

SYSCTL VARIABLES

     The following sysctls are currently implemented, where <device> is crt, lcd, or tv:

     hw.acpi.video.<device>.active
	     Current state of the output device.

     hw.acpi.video.<device>.levels
	     List of supported brightness levels.

     hw.acpi.video.<device>.brightness
	     Current brightness level of the device.

     hw.acpi.video.<device>.fullpower
	     Preset brightness level to be used in full power mode.

     hw.acpi.video.<device>.economy
	     Preset brightness level to be used in economy mode.

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

SEE ALSO

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

HISTORY

     The acpi_video driver first appeared in FreeBSD 5.3.

AUTHORS

     The acpi_video driver was written by Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>.  This manual page was written by Mark Santcroos
     <marks@ripe.net>.

BUGS

     Some systems only perform output switching via SMM even though they export the proper information via ACPI.  On such systems, the proper
     hotkeys or OEM driver (for example, acpi_toshiba(4)) must be used instead.

BSD
								 November 8, 2004							       BSD