Kernel driver ltc2990 ===================== Supported chips: * Linear Technology LTC2990 Prefix: 'ltc2990' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc2990 Author: Mike Looijmans Description ----------- LTC2990 is a Quad I2C Voltage, Current and Temperature Monitor. The chip's inputs can measure 4 voltages, or two inputs together (1+2 and 3+4) can be combined to measure a differential voltage, which is typically used to measure current through a series resistor, or a temperature. This driver currently uses the 2x differential mode only. In order to support other modes, the driver will need to be expanded. Usage Notes ----------- This driver does not probe for PMBus devices. You will have to instantiate devices explicitly. Sysfs attributes ---------------- The "curr*_input" measurements actually report the voltage drop across the input pins in microvolts. This is equivalent to the current through a 1mOhm sense resistor. Divide the reported value by the actual sense resistor value in mOhm to get the actual value. in0_input Voltage at Vcc pin in millivolt (range 2.5V to 5V) temp1_input Internal chip temperature in millidegrees Celcius curr1_input Current in mA across v1-v2 assuming a 1mOhm sense resistor. curr2_input Current in mA across v3-v4 assuming a 1mOhm sense resistor.