NPCM_I2CST_XMIT
if (NPCM_I2CST_XMIT & ioread8(bus->reg + NPCM_I2CST)) {
if (NPCM_I2CST_XMIT & i2cst) {
if (NPCM_I2CST_XMIT & i2cst)