Messages in this thread Patch in this message | | | From | Mike Frysinger <> | Subject | [PATCH] gpio sysfs: add a "toggle" value | Date | Wed, 3 Jun 2009 04:16:59 -0400 |
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Signed-off-by: Mike Frysinger <vapier@gentoo.org> --- drivers/gpio/gpiolib.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-)
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; -- 1.6.3.1
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