SCALER_DISPSTATX
val = HVS_READ(SCALER_DISPSTATX(channel));
dispstat = VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(i)),
WARN_ON_ONCE(VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(chan)),
WARN_ON_ONCE((HVS_READ(SCALER_DISPSTATX(chan)) &