diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:18:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:19:04 +0200 |
| commit | 6ac1ef482d7ae0c690f1640bf6eb818ff9a2d91e (patch) | |
| tree | 021cc9f6b477146fcebe6f3be4752abfa2ba18a9 /include/linux/of_gpio.h | |
| parent | 682968e0c425c60f0dde37977e5beb2b12ddc4cc (diff) | |
| parent | a385ec4f11bdcf81af094c03e2444ee9b7fad2e5 (diff) | |
Merge branch 'perf/core' into perf/uprobes
Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/of_gpio.h')
| -rw-r--r-- | include/linux/of_gpio.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index b254052a49d..81733d12cbe 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -50,7 +50,8 @@ static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) 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 unsigned int of_gpio_named_count(struct device_node *np, + const char* propname); extern int of_mm_gpiochip_add(struct device_node *np, struct of_mm_gpio_chip *mm_gc); @@ -71,7 +72,8 @@ static inline int of_get_named_gpio_flags(struct device_node *np, return -ENOSYS; } -static inline unsigned int of_gpio_count(struct device_node *np) +static inline unsigned int of_gpio_named_count(struct device_node *np, + const char* propname) { return 0; } @@ -89,6 +91,27 @@ static inline void of_gpiochip_remove(struct gpio_chip *gc) { } #endif /* CONFIG_OF_GPIO */ /** + * of_gpio_count - Count GPIOs for a device + * @np: device node to count GPIOs for + * + * The function returns the count of GPIOs specified for a node. + * + * Note that the empty GPIO specifiers counts too. For example, + * + * gpios = <0 + * &pio1 1 2 + * 0 + * &pio2 3 4>; + * + * defines four GPIOs (so this function will return 4), two of which + * are not specified. + */ +static inline unsigned int of_gpio_count(struct device_node *np) +{ + return of_gpio_named_count(np, "gpios"); +} + +/** * 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 |