Analog Devices AD7791 ADC driver

modulename: ad7791.ko
configname: CONFIG_AD7791

Linux Kernel Configuration
└─> Device Drivers
└─> Industrial I/O support
└─> Analog to digital converters
└─> SPI support
└─> Analog Devices AD7791 ADC driver

In linux kernel since version 3.1 (release Date: 2011-10-24)  

Say yes here to build support for Analog Devices AD7787, AD7788, AD7789,
AD7790 and AD7791 SPI analog to digital converters (ADC). If unsure, say
N (but it is safe to say "Y").

To compile this driver as a module, choose M here: the module will be
called ad7791.

source code: