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:

     dev.acpi_sony.0.brightness
             Current brightness level of the display.

     dev.acpi_sony.0.brightness_default
             Default brightness level of the display (survives reboot).

     dev.acpi_sony.0.contrast
             Current contrast level of the display.

     dev.acpi_sony.0.bass_gain
             Enable or disable the Bass Gain feature.

     dev.acpi_sony.0.cdp
             Turns the CD power on or off.

     dev.acpi_sony.0.azp
             Turns the audio power on or off.

     dev.acpi_sony.0.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.

AUTHORS

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