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+Kernel driver smsc47m192
+ * SMSC LPC47M192, LPC47M15x, LPC47M292 and LPC47M997
+ Prefix: 'smsc47m192'
+ Addresses scanned: I2C 0x2c - 0x2d
+ Datasheet: The datasheet for LPC47M192 is publicly available from
+ The LPC47M15x, LPC47M292 and LPC47M997 are compatible for
+ hardware monitoring.
+Author: Hartmut Rick <firstname.lastname@example.org>
+ Special thanks to Jean Delvare for careful checking
+ of the code and many helpful comments and suggestions.
+This driver implements support for the hardware sensor capabilities
+of the SMSC LPC47M192 and compatible Super-I/O chips.
+These chips support 3 temperature channels and 8 voltage inputs
+as well as CPU voltage VID input.
+They do also have fan monitoring and control capabilities, but the
+these features are accessed via ISA bus and are not supported by this
+driver. Use the 'smsc47m1' driver for fan monitoring and control.
+Voltages and temperatures are measured by an 8-bit ADC, the resolution
+of the temperatures is 1 bit per degree C.
+Voltages are scaled such that the nominal voltage corresponds to
+192 counts, i.e. 3/4 of the full range. Thus the available range for
+each voltage channel is 0V ... 255/192*(nominal voltage), the resolution
+is 1 bit per (nominal voltage)/192.
+Both voltage and temperature values are scaled by 1000, the sys files
+show voltages in mV and temperatures in units of 0.001 degC.
+The +12V analog voltage input channel (in4_input) is multiplexed with
+bit 4 of the encoded CPU voltage. This means that you either get
+a +12V voltage measurement or a 5 bit CPU VID, but not both.
+The default setting is to use the pin as 12V input, and use only 4 bit VID.
+This driver assumes that the information in the configuration register
+is correct, i.e. that the BIOS has updated the configuration if
+the motherboard has this input wired to VID4.
+The temperature and voltage readings are updated once every 1.5 seconds.
+Reading them more often repeats the same values.
+in0_input - +2.5V voltage input
+in1_input - CPU voltage input (nominal 2.25V)
+in2_input - +3.3V voltage input
+in3_input - +5V voltage input
+in4_input - +12V voltage input (may be missing if used as VID4)
+in5_input - Vcc voltage input (nominal 3.3V)
+ This is the supply voltage of the sensor chip itself.
+in6_input - +1.5V voltage input
+in7_input - +1.8V voltage input
+in[0-7]_max - lower and upper alarm thresholds for in[0-7]_input reading
+ All voltages are read and written in mV.
+in[0-7]_alarm - alarm flags for voltage inputs
+ These files read '1' in case of alarm, '0' otherwise.
+temp1_input - chip temperature measured by on-chip diode
+temp[2-3]_input - temperature measured by external diodes (one of these would
+ typically be wired to the diode inside the CPU)
+temp[1-3]_max - lower and upper alarm thresholds for temperatures
+temp[1-3]_offset - temperature offset registers
+ The chip adds the offsets stored in these registers to
+ the corresponding temperature readings.
+ Note that temp1 and temp2 offsets share the same register,
+ they cannot both be different from zero at the same time.
+ Writing a non-zero number to one of them will reset the other
+ offset to zero.
+ All temperatures and offsets are read and written in
+ units of 0.001 degC.
+temp[1-3]_alarm - alarm flags for temperature inputs, '1' in case of alarm,
+ '0' otherwise.
+temp[2-3]_input_fault - diode fault flags for temperature inputs 2 and 3.
+ A fault is detected if the two pins for the corresponding
+ sensor are open or shorted, or any of the two is shorted
+ to ground or Vcc. '1' indicates a diode fault.
+cpu0_vid - CPU voltage as received from the CPU
+vrm - CPU VID standard used for decoding CPU voltage
+ The *_min, *_max, *_offset and vrm files can be read and
+ written, all others are read-only.