diff options
| author | James Morris <jmorris@namei.org> | 2010-03-31 08:39:27 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2010-03-31 08:39:27 +1100 |
| commit | d25d6fa1a95f465ff1ec4458ca15e30b2c8dffec (patch) | |
| tree | 7362b182dedd825fc762ef7706830837e42943af /include/asm-generic/gpio.h | |
| parent | 225a9be24d799aa16d543c31fb09f0c9ed1d9caa (diff) | |
| parent | 2eaa9cfdf33b8d7fb7aff27792192e0019ae8fc6 (diff) | |
Merge branch 'master' into next
Diffstat (limited to 'include/asm-generic/gpio.h')
| -rw-r--r-- | include/asm-generic/gpio.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 485eeb6c4ef3..979c6a57f2f1 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -136,6 +136,32 @@ extern int __gpio_cansleep(unsigned gpio); extern int __gpio_to_irq(unsigned gpio); +#define GPIOF_DIR_OUT (0 << 0) +#define GPIOF_DIR_IN (1 << 0) + +#define GPIOF_INIT_LOW (0 << 1) +#define GPIOF_INIT_HIGH (1 << 1) + +#define GPIOF_IN (GPIOF_DIR_IN) +#define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW) +#define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH) + +/** + * struct gpio - a structure describing a GPIO with configuration + * @gpio: the GPIO number + * @flags: GPIO configuration as specified by GPIOF_* + * @label: a literal description string of this GPIO + */ +struct gpio { + unsigned gpio; + unsigned long flags; + const char *label; +}; + +extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label); +extern int gpio_request_array(struct gpio *array, size_t num); +extern void gpio_free_array(struct gpio *array, size_t num); + #ifdef CONFIG_GPIO_SYSFS /* |