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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-01-07 12:34:11 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-02-07 09:47:02 +0100 |
| commit | ef70bbe1aaa612f75360e5df5952fddec50b7ca9 (patch) | |
| tree | 2f80756c83780e9ed9c67401af16022a749543c0 /Documentation/gpio | |
| parent | gpio: generic: clamp retured value to [0,1] (diff) | |
| download | linux-ef70bbe1aaa612f75360e5df5952fddec50b7ca9.tar.xz linux-ef70bbe1aaa612f75360e5df5952fddec50b7ca9.zip | |
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 'Documentation/gpio')
| -rw-r--r-- | Documentation/gpio/consumer.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/gpio/consumer.txt b/Documentation/gpio/consumer.txt index e42f77d8d4ca..09854fe59307 100644 --- a/Documentation/gpio/consumer.txt +++ b/Documentation/gpio/consumer.txt @@ -154,6 +154,7 @@ raw line value: void gpiod_set_raw_value(struct gpio_desc *desc, int value) int gpiod_get_raw_value_cansleep(const struct gpio_desc *desc) void gpiod_set_raw_value_cansleep(struct gpio_desc *desc, int value) + int gpiod_direction_output_raw(struct gpio_desc *desc, int value) The active-low state of a GPIO can also be queried using the following call: |