DS1374_REG_TOD0
ret = ds1374_read_rtc(client, &itime, DS1374_REG_TOD0, 4);
return ds1374_write_rtc(client, itime, DS1374_REG_TOD0, 4);
ret = ds1374_read_rtc(client, &now, DS1374_REG_TOD0, 4);