BUS_I2C
evdev_set_id(sc->evdev, BUS_I2C, 0, 0, 1);
{ HID_TLC(HUP_GENERIC_DESKTOP, HUG_MOUSE), HID_BUS(BUS_I2C), HID_PNP(pnp) }
hw->idBus = BUS_I2C;
case BUS_I2C: