Help enabling OMAP3/TPS65950 vibration motor

Hi,

I'm using the DM37x EVM and need to trigger the vibra ports on the
TPS65950.
It appears that I just need to define INPUT_TWL4030_VIBRA in the config.
After doing this, I see that the twl4030-vibra platform driver is
registered, but the twl4030_vibra_probe() function is never called.
Is there something I need to do to the board or to board-omap3evm.c so
that the device is available and probing can happen?

Thanks,
Paul