Documentation: gpiolib: add 00-INDEX file

Give a short overview of the various GPIO documentation files.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/gpio/00-INDEX b/Documentation/gpio/00-INDEX
new file mode 100644 (file)
index 0000000..1de43ae
--- /dev/null
+++ b/Documentation/gpio/00-INDEX
@@ -0,0 +1,14 @@
+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
+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