- NetBSD Manual Pages
SONY(4) NetBSD Kernel Interfaces Manual SONY(4)
Powered by man-cgi (2021-03-02).
Maintained for NetBSD
by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.
sony -- Sony Miscellaneous Controller
sony* at acpi?
Some Sony notebook computers have a controller that handles various
built-in devices. The sony driver provides support for accessing/modify-
ing the settings of some of these devices via the sysctl(8) interface.
The following sysctl(8) variables are available:
hw.sony0.brt [R/W] Controls current LCD brightness. Range [0-8].
hw.sony0.pbr [R/W] Controls power on LCD brightness. Range [0-8].
hw.sony0.cdp [R/W] Controls CD power.
hw.sony0.pid [R/O] Unknown
hw.sony0.ctr [R/W] Unknown
hw.sony0.pcr [R/W] Unknown
hw.sony0.cmi [R/W] Unknown
hw.sony0.ams [R/W] Audio control (mute when 0)
hw.sony0.hke [R/O] Indicates a Host Key Event. Bits are set when an
event occurs and cleared when this value is read.
The following table describes the bit set for each
0x1000 S1 button
0x0800 S2 button
0x0200 Fn + F10 (magnify)
0x0100 Mute button
0x0020 Fn + F12 (suspend to disk)
0x0010 Fn + F7 (LCD/external monitor)
0x0008 Fn + F6 (brighter backlight)
0x0004 Fn + F5 (darker backlight)
0x0002 Fn + F4 (volume up)
0x0001 Fn + F3 (volume down)
The sony driver appeared in NetBSD 4.0.
Sami Kantoluoto for the original driver and manual information. Christos
Zoulas for cleaning up the driver and this manual page.
· The sony driver just parses integer values from the acpi(4) tree. It
could be more intelligent and parse other controls.
· The sysctl(8) interface is not great. The names of the sysctl(8)
tree are not self-explanatory.
· No validity checks are performed on the user input. Playing with
random values and/or unknown controls can harm your machine.
· The name of the driver is too generic.
NetBSD 7.1.2 December 23, 2007 NetBSD 7.1.2