gpiobus_acquire_pin
err = gpiobus_acquire_pin(busdev, pinnum);
return (gpiobus_acquire_pin(busdev, gpio->pin));
if (gpiobus_acquire_pin(dev, devi->pins[i]) != 0) {
int gpiobus_acquire_pin(device_t, uint32_t);
if (gpiobus_acquire_pin(bussc->sc_busdev, (*pins)[j].pin) != 0)
rv = gpiobus_acquire_pin(busdev, pin.pin);