Editor's Note: The embedded Linux kernel already play a vital role in embedded systems and stands to grow in importance in serving the diverse requirements of the Internet of Things (IoT). In turn, ...

As far as IoT goes, the fundamental Linux driver is the GPIO driver, which gives you access to the individual GPIO lines. This is another built-in driver and so is like the LED driver introduced in ...

Cc: linux-kernel-AT-vger.kernel.org, konrad.dybcio-AT-somainline.org, marijn.suijten-AT-somainline.org, martin.botka-AT-somainline.org, phone-devel-AT-vger.kernel.org ...

Until recently the standard way to work with GPIO in Linux was to use the sysfs interface and you will see a lot of articles advocating its use and you will encounter many programs making use of it.

Cc: Alberto Ruiz <aruizrui-AT-redhat.com>, Christophe Lizzi <clizzi-AT-redhat.com>, devicetree-AT-vger.kernel.org, Enric Balletbo <eballetb-AT-redhat.com>, Eric ...