KS884X_PORT_CTRL_4_OFFSET
port_r16(hw, p, KS884X_PORT_CTRL_4_OFFSET, &data);
port_r16(hw, p, KS884X_PORT_CTRL_4_OFFSET, &data);
port_w16(hw, p, KS884X_PORT_CTRL_4_OFFSET, data);
KS884X_PORT_CTRL_4_OFFSET, PORT_POWER_DOWN, enable);