tree 42e97a07668e3f3ed7a4cc460e4888dd1e3d15bf
parent 936a504319e01642fc5803c00ff4aa5baeafacef
author Matt Spinler <spinler@us.ibm.com> 1495725785 -0500
committer Matt Spinler <spinler@us.ibm.com> 1496175931 -0500

Add GPIO class

This class is used for accessing a GPIO via the
/dev/gpiochipX interface.

It requests a GPIO line handle from the GPIO device to
do the actual operation on.

The GPIO number to use, for AST chips at least, is the
actual GPIO number, such as GPIOA0 = 0 and GPIOA7 = 7.

The class currently only supports writes.

Change-Id: I1c2ae38c23c5db502d5f14bcf9aa2e35094f1e9b
Signed-off-by: Matt Spinler <spinler@us.ibm.com>