Bug 251390 - new kernel module for GPIO input interrupt to kevent
Summary: new kernel module for GPIO input interrupt to kevent
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: CURRENT
Hardware: arm Any
: --- Affects Only Me
Assignee: freebsd-arm (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-11-26 01:58 UTC by Oskar Holmlund
Modified: 2020-11-26 15:52 UTC (History)
0 users

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Attachments
simple kernel module for catching Interrupts and forward to a kevent (88.61 KB, patch)
2020-11-26 01:58 UTC, Oskar Holmlund 		no flags Details | Diff
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Description Oskar Holmlund 2020-11-26 01:58:47 UTC 
Created attachment 219983 [details]
simple kernel module for catching Interrupts and forward to a kevent

Tested on Beaglebone Black
Button connected on P8_8 and P8_10 (change devicetree if you want any other pins)
(Random wiring diagram: https://learn.adafruit.com/connecting-a-push-button-to-beaglebone-black/wiring )

- Compile the devicetree and place the dtbo file in /boot/dtb/overlays/BB-GPIOIITK.dtbo.
- Add to /boot/loader.conf fdt_overlays="BB-GPIOIITK.dtbo"
- Build kernel module (make) and load it kldload gpioiitk.ko
- Build test application (cc test.c)