On 8/17/26 15:06, Ruslan Zalata wrote:
Thanks Matt. That's on FreeBSD, I suppose? Would like to have this
type of service on x86 mini-PCs. :)
---
Regards,
Ruslan
On 2026-08-18 00:08, Matthew Grooms wrote:
On 8/16/26 12:13, Ruslan Zalata wrote:
Hello Sulev-Madis,
What's your target platform ?
I recently discovered that GPIO interrupts are not supported in
"GPIO Bus" driver on x86 platforms because of lack of INTRNG support
(simply not implemented). I found a 6-year old diff D26407 from avg@
to add this functionally which stuck on review because of some
unsolved issues. I renewed avg's patch so it could be applied to
-current and posted for review (D57968) again, but it did get much
traction too. So, if you are interested in getting GPIO interrupts
on x86/amd64 - no luck till gpiobus driver is "fixed". No ideas
about arm and others.
Just as a reference point, I use the gpio interrupt support on rpi4
hosts to track things like water flow for feed systems in an
industrial farm environment. Seems to work quite well.
Yup. I have 10x rpi4b systems running FreeBSD 14 in production, They run
a custom farm automation controller I wrote a while back in c++. The
demo code that accompanied the original gpio interrupt patch was used as
a reference for that specific feature. Not sure that code ever made it
into the source tree.
-Matthew
PS: Maybe try not to top post on the list.
