ABX8XX_REG_OSC
flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSC);
retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSC, flags);
flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSC);
flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSC);
retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSC, flags);