Kernel driver tmp421
  ====================
  
  Supported chips:
    * Texas Instruments TMP421
      Prefix: 'tmp421'
      Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
      Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
    * Texas Instruments TMP422
      Prefix: 'tmp422'
      Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
      Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
    * Texas Instruments TMP423
      Prefix: 'tmp423'
      Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
      Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
  
  Authors:
  	Andre Prendel <andre.prendel@gmx.de>
  
  Description
  -----------
  
  This driver implements support for Texas Instruments TMP421, TMP422
  and TMP423 temperature sensor chips. These chips implement one local
  and up to one (TMP421), up to two (TMP422) or up to three (TMP423)
  remote sensors. Temperature is measured in degrees Celsius. The chips
  are wired over I2C/SMBus and specified over a temperature range of -40
  to +125 degrees Celsius. Resolution for both the local and remote
  channels is 0.0625 degree C.
  
  The chips support only temperature measurement. The driver exports
  the temperature values via the following sysfs files:
  
  temp[1-4]_input
  temp[2-4]_fault