4 /* see Documentation/gpio.txt */
6 #ifdef CONFIG_GENERIC_GPIO
12 * Some platforms don't support the GPIO programming interface.
14 * In case some driver uses it anyway (it should normally have
15 * depended on GENERIC_GPIO), these routines help the compiler
16 * optimize out much GPIO-related code ... or trigger a runtime
17 * warning when something is wrongly called.
20 static inline int gpio_is_valid(int number)
25 static inline int gpio_request(unsigned gpio, const char *label)
30 static inline void gpio_free(unsigned gpio)
32 /* GPIO can never have been requested */
36 static inline int gpio_direction_input(unsigned gpio)
41 static inline int gpio_direction_output(unsigned gpio, int value)
46 static inline int gpio_get_value(unsigned gpio)
48 /* GPIO can never have been requested or set as {in,out}put */
53 static inline void gpio_set_value(unsigned gpio, int value)
55 /* GPIO can never have been requested or set as output */
59 static inline int gpio_cansleep(unsigned gpio)
61 /* GPIO can never have been requested or set as {in,out}put */
66 static inline int gpio_get_value_cansleep(unsigned gpio)
68 /* GPIO can never have been requested or set as {in,out}put */
73 static inline void gpio_set_value_cansleep(unsigned gpio, int value)
75 /* GPIO can never have been requested or set as output */
79 static inline int gpio_to_irq(unsigned gpio)
81 /* GPIO can never have been requested or set as input */
86 static inline int irq_to_gpio(unsigned irq)
88 /* irq can never have been returned from gpio_to_irq() */
95 #endif /* __LINUX_GPIO_H */