ABX8XX_REG_STATUS
status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);
status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
tmp = i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);