XI2C_IOWRITE_BITS
XI2C_IOWRITE_BITS(pdata, IC_ENABLE, EN, 1);
XI2C_IOWRITE_BITS(pdata, IC_ENABLE, ABORT, 1);
XI2C_IOWRITE_BITS(pdata, IC_ENABLE, EN, mode);
XI2C_IOWRITE_BITS(pdata, IC_INTR_MASK, TX_EMPTY, 0);