ADT7411_REG_CFG3
static ADT7411_BIT_ATTR(fast_sampling, ADT7411_REG_CFG3, ADT7411_CFG3_ADC_CLK_225);
static ADT7411_BIT_ATTR(adc_ref_vdd, ADT7411_REG_CFG3, ADT7411_CFG3_REF_VDD);
val = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);
ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG3);
ret = i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG3, val);