ADP5588 I2C GPIO expander

modulename: gpio-adp5588.ko

configname: CONFIG_GPIO_ADP5588

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>ADP5588 I2C GPIO expander
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
This option enables support for 18 GPIOs found
on Analog Devices ADP5588 GPIO Expanders.

source code:
drivers/gpio/gpio-adp5588.c

is selected by
CONFIG_GPIO_ADP5588_IRQ