ABS_PRESSURE
uwacom_event(usbwcmp, EVT_ABS, ABS_PRESSURE, prs);
uwacom_event(usbwcmp, EVT_ABS, ABS_PRESSURE, press);
BM_SET_BIT(sc->sc_bm[3], ABS_PRESSURE);
uwacom_init_abs(usbwcmp, ABS_PRESSURE, 0, sc->sc_type->pressure_max,