_CHV_CMN_DW5_CH0
val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);