interrupt with push buttons through Linux - driver or user space?
We're trying to connect a push button to an ingenic processor, which should generate an interrupt. How do we make the connection between user space in Linux and a certain register in the processor? Do we have to write a device driver to register an interrupt handler or can we use something already existing?
We're thinking about using a thread in user space to monitor the interrupt status, but we don't know how to make the connection with the hardware.
/Rob & Stu