ISL1208_REG_YR
tm->tm_year = bcd2bin(regs[ISL1208_REG_YR]) + 100;
yr = i2c_smbus_read_byte_data(client, ISL1208_REG_YR);
regs[ISL1208_REG_YR] = bin2bcd(tm->tm_year - 100);