i.MX ProcessorsのトピックRe: Event on interrupt

Event on interrupt

mathew_k_t — Thu, 21 Jun 2018 04:27:32 GMT

Hi,

I'm using iMX6ULL Evaluation kit. I have a gpio interrupt. Whenever an interrupt is occured, I would like send a message to userspace application from ISR in kernel driver.

How to implement this?

Can you share some samples?

Regards

Re: Event on interrupt

igorpadykov — Thu, 21 Jun 2018 05:53:10 GMT

Hi mathew_k_t

one can look at interrupt event example provided in touch drivers, for example

i.MX6UL Touch Screen detection

or elan_ts.c driver used with some nxp boards

elan_ts.c\touchscreen\input\drivers - linux-imx - i.MX Linux kernel

imx7d-sdb.dts\dts\boot\arm\arch - linux-imx - i.MX Linux kernel

Best regards
igor
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Re: Event on interrupt

mathew_k_t — Mon, 25 Jun 2018 11:44:36 GMT

Hi,

Can I use netlink socket for sending message to userspace?

Regards