EV_REL 667 include/linux/hid.h case EV_REL: EV_REL 1273 include/linux/input.h input_event(dev, EV_REL, code, value); EV_REL 661 net/bluetooth/hidp/core.c input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);