CDNS_I2C_DATA_OFFSET
data = cdns_i2c_readreg(CDNS_I2C_DATA_OFFSET);
cdns_i2c_writereg(data, CDNS_I2C_DATA_OFFSET);
cdns_i2c_readreg(CDNS_I2C_DATA_OFFSET);
CDNS_I2C_DATA_OFFSET);
*id->p_recv_buf = cdns_i2c_readreg(CDNS_I2C_DATA_OFFSET);
cdns_i2c_writereg((*id->p_send_buf++), CDNS_I2C_DATA_OFFSET);
cdns_i2c_writereg((*(id->p_send_buf)++), CDNS_I2C_DATA_OFFSET);