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NAMEacpi_panasonic —
ACPI hotkey driver for Panasonic laptops
SYNOPSISTo compile this driver into the kernel, place the following line in your kernel configuration file:device acpi_panasonic Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): acpi_panasonic_load="YES" DESCRIPTIONTheacpi_panasonic driver enables such hotkey facilities
of various Panasonic laptops as changing LCD brightness, controlling mixer
volumes, entering sleep or suspended state and so on. On the following models
it is reported to work: Let's note (or Toughbook, outside Japan) CF-R1N,
CF-R2A and CF-R3. It may also work on other models as well.
The driver consists of three functionalities. The first is to detect hotkey events and take corresponding actions, which include changing LCD luminance and speaker mute state. The second role is to notify occurrences of the event by way of devctl(4) and eventually to devd(8). The third and last is to provide a way to adjust LCD brightness and sound mute state via sysctl(8). HotkeysThere are 9 hotkeys available on the supported hardware:
Actions are automatically taken within the driver for Fn+F1, Fn+F2 and Fn+F4. For the other events such as mixer control and showing battery status, devd(8) should take the role as described below. devd(8) EventsWhen notified to devd(8), the hotkey event provides the following information:
Event codes to be generated are assigned as follows:
SYSCTL VARIABLESThe following MIBs are available:
SEE ALSOacpi(4), devd.conf(5), devd(8), sysctl(8)HISTORYTheacpi_panasonic driver first appeared in
FreeBSD 5.3.
AUTHORSTheacpi_panasonic driver and this manual page were
written by OGAWA Takaya
<t-ogawa@triaez.kaisei.org>
and TAKAHASHI Yoshihiro
<nyan@FreeBSD.org>.
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