Messages in this thread Patch in this message | | | Date | Fri, 8 Aug 2008 20:18:13 +0400 | From | Anton Vorontsov <> | Subject | [PATCH 1/3] gpiolib: make gpio_to_chip() public |
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We'll need this function to write platform-specific hooks to deal with pin's dedicated functions. Quite obviously this will work only for the platforms with 1-to-1 GPIO to PIN mapping.
This is stopgap solution till we think out and implement a proper api (pinlib?).
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> --- drivers/gpio/gpiolib.c | 3 ++- include/asm-generic/gpio.h | 1 + 2 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 8d29405..9536fa8 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -81,10 +81,11 @@ static void gpio_ensure_requested(struct gpio_desc *desc) } /* caller holds gpio_lock *OR* gpio is marked as requested */ -static inline struct gpio_chip *gpio_to_chip(unsigned gpio) +struct gpio_chip *gpio_to_chip(unsigned gpio) { return gpio_desc[gpio].chip; } +EXPORT_SYMBOL_GPL(gpio_to_chip); /* dynamic allocation of GPIOs, e.g. on a hotplugged device */ static int gpiochip_find_base(int ngpio) diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 0f99ad3..d70ee45 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -81,6 +81,7 @@ struct gpio_chip { unsigned exported:1; }; +extern struct gpio_chip *gpio_to_chip(unsigned gpio); extern const char *gpiochip_is_requested(struct gpio_chip *chip, unsigned offset); extern int __must_check gpiochip_reserve(int start, int ngpio); -- 1.5.5.4
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