REL_Y
evdev_support_rel(sc->sc_evdev, REL_Y);
evdev_push_rel(sc->sc_evdev, REL_Y, -dy);
evdev_support_rel(evdev_r, REL_Y);
evdev_push_rel(sc->evdev_r, REL_Y, -*y);
evdev_push_rel(sc->evdev_r, REL_Y, -*y);
evdev_push_rel(sc->evdev_r, REL_Y, -y);
evdev_support_rel(sysmouse_evdev, REL_Y);
evdev_push_event(sysmouse_evdev, EV_REL, REL_Y, y);