Messages in this thread | | | Date | Fri, 5 Oct 2012 13:09:13 +0200 | Subject | Re: [PATCH][GPIO] Add IRQ edge setter to gpiolib | From | Drasko DRASKOVIC <> |
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Looping GPIO maintainers...
On Fri, Oct 5, 2012 at 12:45 PM, Drasko DRASKOVIC <drasko.draskovic@gmail.com> wrote: > Hi all, > please find a patch that adds IRQ edge set-up mechanism to sysfs that > can be called from the kernel. > > This functionality can be very useful for embedded systems, as it > permits kernel to do GPIO set-up during boot stage. Configuration > which defines pins behavior is often kept in NVRAM, and during boot > stage these structures can be parsed and executed by the kernel, so > that when user processes already find all sysfs environment ready and > correctly set-up. > > While at the present it is possible to export GPIO pins to sysfs (and > correct direction / value), it is not possible to export IRQ > configuration as well, so this must be done in user space (most often > via command line). this patch implements missing functionality, so > that gpio_sysfs_set_edge() function can be called directly from the > kernel. > > Best regards, > Drasko [unhandled content-type:application/octet-stream] | |