From 537b94dafce29af6a3e923d216472cfc2f3659af Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Thu, 2 Feb 2017 14:53:11 +0100 Subject: gpio: Add the devm_fwnode_get_index_gpiod_from_child() helper devm_fwnode_get_gpiod_from_child() currently allows GPIO users to request a GPIO that is defined in a child fwnode instead of directly in the device fwnode. Extend this API by adding the devm_fwnode_get_index_gpiod_from_child() helper which does the same except you can also specify an index in case the 'xx-gpios' property describe several GPIOs. Signed-off-by: Boris Brezillon Signed-off-by: Linus Walleij --- include/linux/gpio/consumer.h | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index f32f49e96c0b..ea9b01d40017 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -135,14 +135,14 @@ int desc_to_gpio(const struct gpio_desc *desc); struct fwnode_handle; struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, - const char *propname, + const char *propname, int index, enum gpiod_flags dflags, const char *label); -struct gpio_desc *devm_fwnode_get_gpiod_from_child(struct device *dev, - const char *con_id, - struct fwnode_handle *child, - enum gpiod_flags flags, - const char *label); +struct gpio_desc *devm_fwnode_get_index_gpiod_from_child(struct device *dev, + const char *con_id, int index, + struct fwnode_handle *child, + enum gpiod_flags flags, + const char *label); #else /* CONFIG_GPIOLIB */ static inline int gpiod_count(struct device *dev, const char *con_id) @@ -417,13 +417,25 @@ struct fwnode_handle; static inline struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, - const char *propname, + const char *propname, int index, enum gpiod_flags dflags, const char *label) { return ERR_PTR(-ENOSYS); } +static inline +struct gpio_desc *devm_fwnode_get_index_gpiod_from_child(struct device *dev, + const char *con_id, int index, + struct fwnode_handle *child, + enum gpiod_flags flags, + const char *label) +{ + return ERR_PTR(-ENOSYS); +} + +#endif /* CONFIG_GPIOLIB */ + static inline struct gpio_desc *devm_fwnode_get_gpiod_from_child(struct device *dev, const char *con_id, @@ -431,11 +443,10 @@ struct gpio_desc *devm_fwnode_get_gpiod_from_child(struct device *dev, enum gpiod_flags flags, const char *label) { - return ERR_PTR(-ENOSYS); + return devm_fwnode_get_index_gpiod_from_child(dev, con_id, 0, child, + flags, label); } -#endif /* CONFIG_GPIOLIB */ - #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS) int gpiod_export(struct gpio_desc *desc, bool direction_may_change); -- cgit v1.2.3