Date: Wed, 7 May 2014 21:48:52 +0200 From: Sebastian Zietz <mail@sezi.eu> To: freebsd-embedded@freebsd.org Subject: GPIO interrupts on Carambola2 Message-ID: <1A78D43F-9406-4DAB-8554-D8802DE8A3E1@sezi.eu>
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Hi all,
since I am not much into device driver programming jet I hope you can =
help me with my problem. I have a hardware button on GPIO pin 22 and =
can=92t generate interrupts on it. In sys/mips/atheros/ar71xx_gpio.c I=92d=
like to do something like:
331 static void
332 ar71xx_gpio_intr(void *arg)
333 {
334 struct ar71xx_gpio_softc *sc =3D arg;
335 GPIO_LOCK(sc);
336 /* TODO: something useful */
337 devctl_notify("GPIO", "pin22", "notify", NULL);
338 GPIO_UNLOCK(sc);
339 }
To get it working I tried this without success:
410 /* Configure all pins as input */
411 /* disable interrupts for all pins */
412 GPIO_WRITE(sc, AR71XX_GPIO_INT_MASK, 0);
413 GPIO_WRITE(sc, AR71XX_GPIO_INT_MASK, (1 << 22));
I didn=92t managed to come up with pin 22 as input either. I am thankful =
for any help!=
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