tree 64e2fa93be5574ad2ee402e16302e1fe834d1ef4
parent d90f21408bf923aee0fd778fa6fb877ea006a198
author Peter Rosin <peda@axentia.se> 1520539110 +0100
committer Jonathan Cameron <Jonathan.Cameron@huawei.com> 1520697805 +0000

iio: potentiometer: mcp4018: driver for Microchip digital potentiometers

Add support for Microchip digital potentiometers and rheostats
	MCP4017, MCP4018, MCP4019

They all have one wiper with 128 steps and come in 5, 10, 50 and 100 kOhm
variations.

Datasheet: http://www.microchip.com/downloads/en/DeviceDoc/22147a.pdf

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>