Add a property to toggle function key mode

On some keyboards, the multimedia function keys are overlaid with the F
keys. This property enables clients to switch the primary mode of these F
keys between function keys and multimedia keys.
Some keyboards provide an Fn key to toggle between the modes. This is
hardware-specific and may or may not work on any given keyboard device.

The current imlementation is only hooked up to apple keyboards.
The kernel provides a tweak to enable/disable.

/sys/module/hid_apple/parameters/fnmode
    0 .. keyboard sends Fx keys, Fn disabled
    1 .. keyboard sends multimedia keys, Fn toggles to function keys
    2 .. keyboard sends function keys, Fn toggles to multimedia keys

If fnmode is on 0, we force it to 2.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Michel Dänzer <michel@daenzer.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/evdev.c b/src/evdev.c
index f997490..596eed9 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -1359,6 +1359,7 @@ EvdevInit(DeviceIntPtr device)
     Evdev3BEmuInitProperty(device);
     EvdevWheelEmuInitProperty(device);
     EvdevDragLockInitProperty(device);
+    EvdevAppleInitProperty(device);
 
     return Success;
 }