User Space GPIO Interrupt programming - GSoC-2018

[Oskar Holmlund]

> Den tisdag 24 november 2020 21:14:58 CET, Dr. Rolf Jansen <freebsd-rj at obsigna.com> skrev:
> 
> 
> Hello
> 
> Has anything of the GSoC-2018 efforts made it into the current code base?
>
> https://wiki.freebsd.org/SummerOfCode2018Projects/UserSpaceGPIOinterrupts
> 
> I installed the recent 13.0-CURRENT snapshot (2020-11-19) on a BeagleBone Black which was one of the implementation targets of said 
> project, but when running the test tools, I either see cannot read/kevent/poll/aio_read - Operation not supported by device or Inappropriate 
> ioctl for device.
>
> Perhaps I need to pull the project’s changes into the kernel by myself. However, before this I would like to ask whether it is worth the effort.
> 
> Please, can anyone shed some light on this.
>
> Best regards
>
> Rolf
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Hi Rolf,

I dont have any details about the GSOC.
But the code is not in base.

I have written a similar driver for my needs. It is much simpler and provides a notification to userland through kqueue events in the event of a change and counts the number of changes that have taken place over time.
I can share the code if you want.

//Oskar