diff options
Diffstat (limited to 'include/linux/of_gpio.h')
| -rw-r--r-- | include/linux/of_gpio.h | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index 6598c04dab0..aec8025c786 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -46,8 +46,9 @@ static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) return container_of(gc, struct of_mm_gpio_chip, gc); } -extern int of_get_gpio_flags(struct device_node *np, int index, - enum of_gpio_flags *flags); +extern int of_get_named_gpio_flags(struct device_node *np, + const char *list_name, int index, enum of_gpio_flags *flags); + extern unsigned int of_gpio_count(struct device_node *np); extern int of_mm_gpiochip_add(struct device_node *np, @@ -60,8 +61,8 @@ extern struct gpio_chip *of_node_to_gpiochip(struct device_node *np); #else /* CONFIG_OF_GPIO */ /* Drivers may not strictly depend on the GPIO support, so let them link. */ -static inline int of_get_gpio_flags(struct device_node *np, int index, - enum of_gpio_flags *flags) +static inline int of_get_named_gpio_flags(struct device_node *np, + const char *list_name, int index, enum of_gpio_flags *flags) { return -ENOSYS; } @@ -77,7 +78,38 @@ static inline void of_gpiochip_remove(struct gpio_chip *gc) { } #endif /* CONFIG_OF_GPIO */ /** - * of_get_gpio - Get a GPIO number to use with GPIO API + * of_get_gpio_flags() - Get a GPIO number and flags to use with GPIO API + * @np: device node to get GPIO from + * @index: index of the GPIO + * @flags: a flags pointer to fill in + * + * Returns GPIO number to use with Linux generic GPIO API, or one of the errno + * value on the error condition. If @flags is not NULL the function also fills + * in flags for the GPIO. + */ +static inline int of_get_gpio_flags(struct device_node *np, int index, + enum of_gpio_flags *flags) +{ + return of_get_named_gpio_flags(np, "gpios", index, flags); +} + +/** + * of_get_named_gpio() - Get a GPIO number to use with GPIO API + * @np: device node to get GPIO from + * @propname: Name of property containing gpio specifier(s) + * @index: index of the GPIO + * + * Returns GPIO number to use with Linux generic GPIO API, or one of the errno + * value on the error condition. + */ +static inline int of_get_named_gpio(struct device_node *np, + const char *propname, int index) +{ + return of_get_named_gpio_flags(np, propname, index, NULL); +} + +/** + * of_get_gpio() - Get a GPIO number to use with GPIO API * @np: device node to get GPIO from * @index: index of the GPIO * |