Kernel driver smsc47m192
  ========================
  
  Supported chips:

    * SMSC LPC47M192, LPC47M15x, LPC47M292 and LPC47M997

      Prefix: 'smsc47m192'
      Addresses scanned: I2C 0x2c - 0x2d
      Datasheet: The datasheet for LPC47M192 is publicly available from
                 http://www.smsc.com/

                 The LPC47M15x, LPC47M292 and LPC47M997 are compatible for
                 hardware monitoring.

  
  Author: Hartmut Rick <linux@rick.claranet.de>
          Special thanks to Jean Delvare for careful checking
          of the code and many helpful comments and suggestions.
  
  
  Description
  -----------
  
  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.
  
  
  sysfs interface
  ---------------
  
  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]_min,
  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]_min,
  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.