TI PALMAS series PMICs GPIO

modulename: gpio-palmas.ko

configname: CONFIG_GPIO_PALMAS

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>MFD GPIO expanders
└─>TI PALMAS series PMICs GPIO
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Select this option to enable GPIO driver for the TI PALMAS
series chip family.

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