Re: [PATCH v9] gpio: add a driver for Synopsys DesignWare APB GPIO

[delicious quinoa]

On Thu, Dec 12, 2013 at 3:08 AM, Steffen Trumtrar
<s.trumtrar@xxxxxxxxxxxxxx> wrote:

> Second: The interrupt is registered as "GIC 37", which is a real interrupt on
> the Socfpga. I would expect it to be marked as "GPIO 2xx" (or something in that
> range). The interrupt from the gpiochip itself isn't registered at all ?!

Hi Stephen,

Did you export the gpio lines and set the edge in sysfs?  Because the
interrupts aren't allocated otherwise.

For instance:

root@socfpga_cyclone5:~# echo 195 > /sys/class/gpio/export
root@socfpga_cyclone5:~# echo rising > /sys/class/gpio/gpio195/edge

Now I can see a pretty nicely named interrupt in /proc/interrupts:

256:          0          0  gpio-dwapb  24  gpiolib

Alan Tull
Altera Corp
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