SCALER_DISPCTRLX
HVS_WRITE(SCALER_DISPCTRLX(chan), 0);
HVS_WRITE(SCALER_DISPCTRLX(chan), SCALER_DISPCTRLX_RESET);
HVS_WRITE(SCALER_DISPCTRLX(chan), 0);
HVS_WRITE(SCALER_DISPCTRLX(chan), dispctrl);
if (!(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_ENABLE))
HVS_WRITE(SCALER_DISPCTRLX(chan), SCALER_DISPCTRLX_RESET);
HVS_WRITE(SCALER_DISPCTRLX(chan), 0);
WARN_ON_ONCE(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_RESET);