GPIO
If you are running Raspbian Jessie then GPIO is ready to use out of the box.
Prerequisite Configuration
- Arch requires Prerequisite Configuration. See this page for more information.
- Raspbian Wheezy requires some GPIO Prerequisite Configuration. See this page for more information.
Config.txt
Nothing required.
Kernel Module
Nothing required.
System Config
Nothing required.
Issues
The /dev/gpiomemis just accesses a smaller part of the broadcom peripheral memory and not really a driver but its better than nothing.