Overview

The GPIO framework consists of the following units, which work together to gather information from client applications, and send or receive data from the GPIO controller hardware:

libgpio

The client-side API library. This library provides the GPIO client APIs in the form of C functions that applications can call directly.

io-gpio

The GPIO resource manager responsible for providing an API to GPIO hardware modules.

gpio_hw_xxx.so

The GPIO hardware modules implement the GPIO hardware operations.