Messages in this thread | | | Date | Fri, 11 Dec 2015 13:43:31 +0100 | Subject | Re: [RESEND RFC PATCH 1/2] gpio: Add isr property of gpio pins | From | Linus Walleij <> |
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On Tue, Dec 8, 2015 at 4:20 AM, Peter Rosin <peda@lysator.liu.se> wrote:
> From: Peter Rosin <peda@axentia.se> > > Adds the possibility to read the interrupt status register bit for the > gpio pin. Expose the bit as an isr file in sysfs. > > Signed-off-by: Peter Rosin <peda@axentia.se>
NACK. We have frozen the sysfs ABI and we are working on a character device to replace it for userspace access, see: http://marc.info/?l=linux-gpio&m=144550276512673&w=2
Second question is *WHY* you want this crazy thing? Userspace should want *events* from a file descriptor, like IIO does it for example (on top of a proper chardev), not polling a register to figure out if an IRQ occurred.
We need to think about the real solution to what you want to do.
Yours, Linus Walleij
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