NPCM_I2CST_STASTR
iowrite8(NPCM_I2CST_STASTR, bus->reg + NPCM_I2CST);
if (FIELD_GET(NPCM_I2CST_STASTR, i2cst)) {
val = NPCM_I2CST_BER | NPCM_I2CST_NEGACK | NPCM_I2CST_STASTR;