User space interface for GPIO interrupts

[Maverick Kuo]

Hi,

Good News !!

after cvs to 12.0-STABLE #0 r348527M GPIO Interrupt with kqueue Works !!!

Thanks to the developers :)

Regards,
Chris

Maverick Kuo <maverick.kuo at gmail.com> 於 2019年6月3日 週一 下午2:56寫道：

> Hi,
>
> i am running  12.0-STABLE r348448  arm64 on raspberry pi3 b+.
>
> Look at the kernel and it seems that all the functions related to gpio
> interrupt are available.
>
> System startup process
> Bcm_gpio_intr_attach =>>
> Bus_setup_intr
> ?? bcm_gpio_intr_bank[0,1]
> ?? bcm_gpio_intr_internal
>
> It seems that BCM_GPIO_GPEDS (Event Status) will be read in the
> bcm_gpio_intr_internal function but it is not executed there.
>
> am I missed that part??
>
> Let users use kqueue/kevent to monitor gpio interrupt to reduce cpu load.
>
> Regards,
> Chris
>