Messages in this thread | | | Date | Thu, 4 Jun 2009 00:54:35 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] gpio sysfs: add a "toggle" value |
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On Wed, 3 Jun 2009 04:16:59 -0400 Mike Frysinger <vapier@gentoo.org> wrote:
> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
-ENOCHANGELOGAGAIN
> diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c > index 51a8d41..7f79732 100644 > --- a/drivers/gpio/gpiolib.c > +++ b/drivers/gpio/gpiolib.c > @@ -274,7 +274,12 @@ static ssize_t gpio_value_store(struct device *dev, > else { > long value; > > - status = strict_strtol(buf, 0, &value); > + if (sysfs_streq(buf, "toggle")) { > + value = !gpio_get_value_cansleep(gpio); > + status = 0; > + } else > + status = strict_strtol(buf, 0, &value); > + > if (status == 0) { > gpio_set_value_cansleep(gpio, value != 0); > status = size;
A suitable place to document this is Documentation/gpio.txt.
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