ACPI_SONY(4)

NAME
acpi_sony - ACPI notebook controller driver for Sony laptops

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

device acpi_sony

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

    acpi_sony_load="YES"

DESCRIPTION
The acpi_sony driver provides support for the notebook controller in Sony laptops. Note that not all features will work on all laptop models.

SYSCTLS
The following sysctl nodes are currently implemented:

hw.acpi.sony.brightness
    Current brightness level of the display.

hw.acpi.sony.brightness_default
    Default brightness level of the display (survives reboot).

hw.acpi.sony.contrast
    Current contrast level of the display.

hw.acpi.sony.bass_gain
    Enable or disable the Bass Gain feature.

hw.acpi.sony.cdp
    Turns the CD power on or off.

hw.acpi.sony.azp
    Turns the audio power on or off.

hw.acpi.sony.lnp
    Turns the wired network interface power on or off.

SEE ALSO
acpi(4), sysctl(8)

HISTORY
The acpi_sony driver first appeared in FreeBSD 6.0. It was then ported to DragonFly 2.5.

AUTHORS
The acpi_sony driver was written by Takanori Watanabe <takawata@FreeBSD.org>.