Kernel driver twl4030-madc
  =========================
  
  Supported chips:
  	* Texas Instruments TWL4030
  	Prefix: 'twl4030-madc'
  
  
  Authors:
  	J Keerthy <j-keerthy@ti.com>
  
  Description
  -----------
  
  The Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among
  other things it contains a 10-bit A/D converter MADC. The converter has 16
  channels which can be used in different modes.
  
  
  See this table for the meaning of the different channels
  
  Channel Signal
  ------------------------------------------
  0	Battery type(BTYPE)
  1	BCI: Battery temperature (BTEMP)
  2	GP analog input
  3	GP analog input
  4	GP analog input
  5	GP analog input
  6	GP analog input
  7	GP analog input
  8	BCI: VBUS voltage(VBUS)
  9	Backup Battery voltage (VBKP)
  10	BCI: Battery charger current (ICHG)
  11	BCI: Battery charger voltage (VCHG)
  12	BCI: Main battery voltage (VBAT)
  13	Reserved
  14	Reserved
  15	VRUSB Supply/Speaker left/Speaker right polarization level
  
  
  The Sysfs nodes will represent the voltage in the units of mV,
  the temperature channel shows the converted temperature in
  degree celcius. The Battery charging current channel represents
  battery charging current in mA.