diff options
| author | Dave Airlie <airlied@redhat.com> | 2010-03-31 14:55:14 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-03-31 14:55:14 +1000 |
| commit | 3595be778d8cb887f0e0575ef0a0c1a094d120bb (patch) | |
| tree | 15671ed8bd3597d2efe13aa57b755c66014acb57 /include/asm-generic/gpio.h | |
| parent | c414a117c6094c3f86b533f97beaf45ef9075f03 (diff) | |
| parent | 220bf991b0366cc50a94feede3d7341fa5710ee4 (diff) | |
Merge branch 'v2.6.34-rc2' into drm-linus
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 485eeb6c4ef..979c6a57f2f 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 /* |