Re: userspace gpio interrupts / input-output control

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.

-Matthew