KS8842_SWITCH_CTRL_3_OFFSET
data = readw(hw->io + KS8842_SWITCH_CTRL_3_OFFSET);
writew(data, hw->io + KS8842_SWITCH_CTRL_3_OFFSET);
data = readw(hw->io + KS8842_SWITCH_CTRL_3_OFFSET);
sw_cfg(hw, KS8842_SWITCH_CTRL_3_OFFSET, SWITCH_REPLACE_NULL_VID, set);
data = readw(hw->io + KS8842_SWITCH_CTRL_3_OFFSET);
writew(data, hw->io + KS8842_SWITCH_CTRL_3_OFFSET);