And yes, I'd seen the GPIO Character Device Userspace API kernel docs -- which is why I made the comment that you essentially have to read linux/gpio.h -- the web page is essentially the exact same information included in the header -- just with html formatting. Though the kernel page does have a few expanded definition if you follow the inline links. The kernel docs and the header are about the total of the info you will find.
Statistics: Posted by drankinatty — Tue May 07, 2024 9:54 pm