Kernel driver `ds1621.o' ===================== Status: Complete and tested, alarms experimental Supported chips: * Dallas Semiconductor DS1621 Prefix: `ds1621' Addresses scanned: I2C 0x48 - 0x4f (inclusive) Datasheet: Publicly available at the Dallas Semiconductor website http://www.dalsemi.com * Dallas Semiconductor DS1625 Prefix: `ds1621' Addresses scanned: I2C 0x48 - 0x4f (inclusive) Datasheet: Publicly available at the Dallas Semiconductor website http://www.dalsemi.com Author: Christian W. Zuckschwerdt Module Parameters ----------------- * force: short array (min = 1, max = 48) List of adapter,address pairs to boldly assume to be present * force_ds1621: short array (min = 1, max = 48) List of adapter,address pairs which are unquestionably assumed to contain a `ds1621' chip * ignore: short array (min = 1, max = 48) List of adapter,address pairs not to scan * ignore_range: short array (min = 1, max = 48) List of adapter,start-addr,end-addr triples not to scan * probe: short array (min = 1, max = 48) List of adapter,address pairs to scan additionally * probe_range: short array (min = 1, max = 48) List of adapter,start-addr,end-addr triples to scan additionally Description ----------- The DS1621 implements one temperature sensor. Limits can be set through the Overtemperature register and Hysteresis register. Each value can be set and read to half-degree accuracy. An alarm is issued when the temperature gets higher then the Overtemperature value; or drops below the Hysteresis value. It stays on until reset by the kernel module. All temperatures are in degrees Celcius, and are guaranteed within a range of -55 to +125 degrees. The DS1621 supplies the temperature data in a format common with chips like the LM75, LM77 and DS75, DS1775. While the DS1621 has three additional bits of accuracy (12 vs. 9 for the LM75), the additional bits are not supported. The driver also supports the DS1625. It does not distinguish the 1625 from the 1621. The chip prefix in /proc is always ds1621. The difference in the chips is that the 1621 supports additional registers for greater accuracy. The driver does not use these registers. The DS1625 has been discontinued by Dallas Semi, they recommend the DS1621 for new designs. Chip Features ------------- Chip `ds1621' LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE temp NONE NONE R 1 temp_hyst temp temp RW 1 temp_over temp temp RW 1 alarms NONE NONE R 0 LABEL FEATURE SYMBOL SYSCTL FILE:OFFSET temp SENSORS_DS1621_TEMP temp:3 temp_hyst SENSORS_DS1621_TEMP_HYST temp:2 temp_over SENSORS_DS1621_TEMP_OVER temp:1 alarms SENSORS_DS1621_ALARMS alarms:1