Hi, I've written a polled input device driver for the S1 button built into the Routerboard 532. Sadly, the gpio-keys driver can't be used, as it turns on the GPIO as interrupt source (which then has to stay configured for this use), which would render the serial console unusable as it uses the same pin in alternate function mode. I've split up the changes into two parts to divide BSP changes from the actual driver. Greetings, Phil
