Kernel driver w83l786ng
  =====================
  
  Supported chips:
    * Winbond W83L786NG/W83L786NR
      Prefix: 'w83l786ng'
      Addresses scanned: I2C 0x2e - 0x2f
      Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf
  
  Author: Kevin Lo <kevlo@kevlo.org>
  
  
  Module Parameters
  -----------------
  
  * reset boolean
    (default 0)
    Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default
    behavior is no chip reset to preserve BIOS settings
  
  
  Description
  -----------
  
  This driver implements support for Winbond W83L786NG/W83L786NR chips.
  
  The driver implements two temperature sensors, two fan rotation speed
  sensors, and three voltage sensors.
  
  Temperatures are measured in degrees Celsius and measurement resolution is 1
  degC for temp1 and temp2.
  
  Fan rotation speeds are reported in RPM (rotations per minute). Fan readings
  readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64
  or 128 for fan 1/2) to give the readings more range or accuracy.
  
  Voltage sensors (also known as IN sensors) report their values in millivolts.
  An alarm is triggered if the voltage has crossed a programmable minimum
  or maximum limit.
  
  /sys files
  ----------
  
  pwm[1-2] - this file stores PWM duty cycle or DC value (fan speed) in range:
  	    0 (stop) to 255 (full)
  pwm[1-2]_enable - this file controls mode of fan/temperature control:
              * 0 Manual Mode
              * 1 Thermal Cruise
              * 2 Smart Fan II
              * 4 FAN_SET
  pwm[1-2]_mode - Select PWM of DC mode
              * 0 DC
              * 1 PWM
  tolerance[1-2] - Value in degrees of Celsius (degC) for +- T