diff options
| author | Robert Richter <robert.richter@amd.com> | 2010-04-23 14:30:22 +0200 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-04-23 14:30:22 +0200 |
| commit | a36bf32e9e8a86f291f746b7f8292e042ee04a46 (patch) | |
| tree | c5c999baa4c214218e3adea9b336cbd9f23950ad /include/asm-generic/gpio.h | |
| parent | bc078e4eab65f11bbaeed380593ab8151b30d703 (diff) | |
| parent | 01bf0b64579ead8a82e7cfc32ae44bc667e7ad0f (diff) | |
Merge commit 'v2.6.34-rc5' into oprofile/core
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 /* |