Diolan DLN-2 USB SPI adapter

modulename: spi-dln2.ko

configname: CONFIG_SPI_DLN2

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>Diolan DLN-2 USB SPI adapter
In linux kernel since version 4 (release Date: 2015-04-12)  
If you say yes to this option, support will be included for Diolan
DLN2, a USB to SPI interface.

This driver can also be built as a module. If so, the module
will be called spi-dln2.

source code:
drivers/spi/spi-dln2.c