EXAR XRA1403 16-bit GPIO expander

modulename: gpio-xra1403.ko

configname: CONFIG_GPIO_XRA1403

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>SPI GPIO expanders
└─>EXAR XRA1403 16-bit GPIO expander
In linux kernel since version 4.2 (release Date: 2015-08-30)  
GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.

source code: