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Kernel driver MCP3021
======================

Supported chips:
  * Microchip Technology MCP3021
    Prefix: 'mcp3021'
    Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21805a.pdf
  * Microchip Technology MCP3221
    Prefix: 'mcp3221'
    Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21732c.pdf

Authors:
   Mingkai Hu
   Sven Schuchmann <schuchmann@schleissheimer.de>

Description
-----------

This driver implements support for the Microchip Technology MCP3021 and
MCP3221 chip.

The Microchip Technology Inc. MCP3021 is a successive approximation A/D
converter (ADC) with 10-bit resolution. The MCP3221 has 12-bit resolution.

These devices provide one single-ended input with very low power consumption.
Communication to the MCP3021/MCP3221  is performed using a 2-wire I2C
compatible interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are
available. The default I2C device address is 0x4d (contact the Microchip
factory for additional address options).