00-INDEX
	- This file
gpio.txt
	- Introduction to GPIOs and their kernel interfaces
consumer.txt
	- How to obtain and use GPIOs in a driver
driver.txt
	- How to write a GPIO driver
drivers-on-gpio.txt:
	- Drivers in other subsystems that can use GPIO to provide more
	  complex functionality.
board.txt
	- How to assign GPIOs to a consumer device and a function
sysfs.txt
	- Information about the GPIO sysfs interface
gpio-legacy.txt
	- Historical documentation of the deprecated GPIO integer interface