October 2017
Intermediate to advanced
586 pages
14h 8m
English
Content preview from Linux Device Drivers Development
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Summary
Dealing with a GPIO from within the kernel is an easy task, as shown in this chapter. Both legacy and new interfaces were discussed, giving the possibility to choose the one that fits your needs, in order to write enhanced GPIO drivers. You should now be able to handle IRQs mapped to GPIOs. The next chapter will deal with the chip that provides and exposes GPIO lines, known as the GPIO controller.