_CHV_CMN_DW6_CH1
#define CHV_CMN_DW19(ch) _PIPE(ch, _CHV_CMN_DW19_CH0, _CHV_CMN_DW6_CH1)
tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1);
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp);
reg = _CHV_CMN_DW6_CH1;