Kernel driver adt7410 ===================== Supported chips: * Analog Devices ADT7410 Prefix: 'adt7410' Addresses scanned: None Datasheet: Publicly available at the Analog Devices website http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf * Analog Devices ADT7420 Prefix: 'adt7420' Addresses scanned: None Datasheet: Publicly available at the Analog Devices website http://www.analog.com/static/imported-files/data_sheets/ADT7420.pdf Author: Hartmut Knaack Description ----------- The ADT7410 is a temperature sensor with rated temperature range of -55°C to +150°C. It has a high accuracy of +/-0.5°C and can be operated at a resolution of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an INT pin to indicate that a minimum or maximum temperature set point has been exceeded, as well as a critical temperature (CT) pin to indicate that the critical temperature set point has been exceeded. Both pins can be set up with a common hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. Both pins can individually set to be active-low or active-high, while the whole device can either run in comparator mode or interrupt mode. The ADT7410 supports continous temperature sampling, as well as sampling one temperature value per second or even justget one sample on demand for power saving. Besides, it can completely power down its ADC, if power management is required. The ADT7420 is register compatible, the only differences being the package, a slightly narrower operating temperature range (-40°C to +150°C), and a better accuracy (0.25°C instead of 0.50°C.) Configuration Notes ------------------- Since the device uses one hysteresis value, which is an offset to minimum, maximum and critical temperature, it can only be set for temp#_max_hyst. However, temp#_min_hyst and temp#_crit_hyst show their corresponding hysteresis. The device is set to 16 bit resolution and comparator mode. sysfs-Interface --------------- temp#_input - temperature input temp#_min - temperature minimum setpoint temp#_max - temperature maximum setpoint temp#_crit - critical temperature setpoint temp#_min_hyst - hysteresis for temperature minimum (read-only) temp#_max_hyst - hysteresis for temperature maximum (read/write) temp#_crit_hyst - hysteresis for critical temperature (read-only) temp#_min_alarm - temperature minimum alarm flag temp#_max_alarm - temperature maximum alarm flag temp#_crit_alarm - critical temperature alarm flag