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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-05-02 12:46:46 +0100 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-05-18 16:48:35 -0600 |
| commit | 09d71ff19404b3957fab6de942fb8026ccfd8524 (patch) | |
| tree | ba3680f5b79ea1fbeae073ab7cb28c9bdcad7e60 /include | |
| parent | eb1567f7ad0032ba7b02b878e352f191d53dc228 (diff) | |
| download | linux-09d71ff19404b3957fab6de942fb8026ccfd8524.tar.gz linux-09d71ff19404b3957fab6de942fb8026ccfd8524.tar.bz2 linux-09d71ff19404b3957fab6de942fb8026ccfd8524.zip | |
gpiolib: Implement devm_gpio_request_one()
Allow drivers to use the modern request and configure idiom together
with devres.
As with plain gpio_request() and gpio_request_one() we can't implement
the old school version in terms of _one() as this would force the
explicit selection of a direction in gpio_request() which could break
systems if we pick the wrong one. Implementing devm_gpio_request_one()
in terms of devm_gpio_request() would needlessly complicate things or
lead to duplication from the unmanaged version depending on how it's
done.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/gpio.h | 2 | ||||
| -rw-r--r-- | include/linux/gpio.h | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 5f52690c3c8f..4ead12332c66 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -179,6 +179,8 @@ extern void gpio_free_array(const struct gpio *array, size_t num); /* bindings for managed devices that want to request gpios */ int devm_gpio_request(struct device *dev, unsigned gpio, const char *label); +int devm_gpio_request_one(struct device *dev, unsigned gpio, + unsigned long flags, const char *label); void devm_gpio_free(struct device *dev, unsigned int gpio); #ifdef CONFIG_GPIO_SYSFS diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 7a8816a1a0d8..f07fc2d08159 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -106,6 +106,12 @@ static inline int gpio_request_one(unsigned gpio, return -ENOSYS; } +static inline int devm_gpio_request_one(struct device *dev, unsigned gpio, + unsigned long flags, const char *label) +{ + return -ENOSYS; +} + static inline int gpio_request_array(const struct gpio *array, size_t num) { return -ENOSYS; |