From fe6c473e3e41114301bfbf5710be56bf0eb233dc Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 6 Dec 2018 13:43:42 +0100 Subject: 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 Reviewed-by: Marek Szyprowski Tested-by: Marek Szyprowski Reviewed-by: Charles Keepax Signed-off-by: Mark Brown --- include/linux/gpio/consumer.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/gpio/consumer.h') 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, @@ -517,6 +521,15 @@ static inline int desc_to_gpio(const struct gpio_desc *desc) 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, -- cgit v1.2.3