diff options
| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-02-02 14:53:11 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-02-04 21:28:51 +0100 |
| commit | 537b94dafce29af6a3e923d216472cfc2f3659af (patch) | |
| tree | 358e78fe44033fb00490111fea7b873ef16ce0f5 /include/linux/gpio | |
| parent | 4b0947974e593d52aace18ca5c7e2746fdebae60 (diff) | |
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 <boris.brezillon@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/consumer.h | 31 |
1 files changed, 21 insertions, 10 deletions
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) @@ -417,7 +417,7 @@ 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) { @@ -425,17 +425,28 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, } 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, struct fwnode_handle *child, 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); |