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acpi_sony — ACPI notebook controller driver for Sony laptops
To compile this driver into the kernel, place the following line in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
The acpi_sony driver provides support for the notebook controller in Sony
laptops. Note that not all features will work on all laptop models.
The following sysctl nodes are currently implemented:
Current brightness level of the display.
Default brightness level of the display (survives reboot).
Current contrast level of the display.
Enable or disable the Bass Gain feature.
Turns the CD power on or off.
Turns the audio power on or off.
Turns the wired network interface power on or off.
The acpi_sony driver first appeared in FreeBSD 6.0.
The acpi_sony driver was written by Takanori Watanabe