diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2018-12-06 13:43:42 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-12-11 01:04:04 +0000 |
| commit | fe6c473e3e41114301bfbf5710be56bf0eb233dc (patch) | |
| tree | 856ff4dd4f4b8cf119d6b39102135310726205fb /include/linux/gpio | |
| parent | 894077d5c871f86e6c88a70ac016b6811a910b23 (diff) | |
gpio: Export gpiod_get_from_of_node()
This function already exist inside gpiolib, we were just
reluctant to make it available to the kernel at large as
the devm_* seemed to be enough for anyone.
However we found out that regulators need to do their own
lifecycle/refcounting on GPIO descriptors and explicitly
call gpiod_put() when done with a descriptor, so export
this function so we can hand the refcounting over to the
regulator core for these descriptors after retrieveal.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/consumer.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index f2f887795d43..348885f2f3d3 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -172,6 +172,10 @@ int desc_to_gpio(const struct gpio_desc *desc); struct device_node; struct fwnode_handle; +struct gpio_desc *gpiod_get_from_of_node(struct device_node *node, + const char *propname, int index, + enum gpiod_flags dflags, + const char *label); struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev, struct device_node *node, const char *propname, int index, @@ -518,6 +522,15 @@ struct device_node; struct fwnode_handle; static inline +struct gpio_desc *gpiod_get_from_of_node(struct device_node *node, + const char *propname, int index, + enum gpiod_flags dflags, + const char *label) +{ + return ERR_PTR(-ENOSYS); +} + +static inline struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev, struct device_node *node, const char *propname, int index, |