diff options
| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-01-07 15:34:11 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-02-07 12:47:02 +0400 |
| commit | ef70bbe1aaa612f75360e5df5952fddec50b7ca9 (patch) | |
| tree | 2f80756c83780e9ed9c67401af16022a749543c0 /include/linux/gpio | |
| parent | 25b35da7f4cce82271859f1b6eabd9f3bd41a2bb (diff) | |
| download | linux-ef70bbe1aaa612f75360e5df5952fddec50b7ca9.tar.xz | |
gpio: make gpiod_direction_output take a logical value
The documentation was not clear about whether
gpio_direction_output should take a logical value or the physical
level on the output line, i.e. whether the ACTIVE_LOW status
would be taken into account.
This converts gpiod_direction_output to use the logical level
and adds a new gpiod_direction_output_raw for the raw value.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/consumer.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index 4d34dbbbad4d..387994325122 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -36,6 +36,7 @@ void devm_gpiod_put(struct device *dev, struct gpio_desc *desc); int gpiod_get_direction(const struct gpio_desc *desc); int gpiod_direction_input(struct gpio_desc *desc); int gpiod_direction_output(struct gpio_desc *desc, int value); +int gpiod_direction_output_raw(struct gpio_desc *desc, int value); /* Value get/set from non-sleeping context */ int gpiod_get_value(const struct gpio_desc *desc); @@ -121,6 +122,12 @@ static inline int gpiod_direction_output(struct gpio_desc *desc, int value) WARN_ON(1); return -ENOSYS; } +static inline int gpiod_direction_output_raw(struct gpio_desc *desc, int value) +{ + /* GPIO can never have been requested */ + WARN_ON(1); + return -ENOSYS; +} static inline int gpiod_get_value(const struct gpio_desc *desc) |