diff options
Diffstat (limited to 'include/linux/gpio.h')
| -rw-r--r-- | include/linux/gpio.h | 77 |
1 files changed, 12 insertions, 65 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 7ecc25c543ce..8f85ddb26429 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * <linux/gpio.h> + * NOTE: This header *must not* be included. * * This is the LEGACY GPIO bulk include file, including legacy APIs. It is * used for GPIO drivers still referencing the global GPIO numberspace, @@ -13,41 +13,20 @@ #define __LINUX_GPIO_H #include <linux/types.h> +#ifdef CONFIG_GPIOLIB +#include <linux/gpio/consumer.h> +#endif -struct device; +#ifdef CONFIG_GPIOLIB_LEGACY -/* see Documentation/driver-api/gpio/legacy.rst */ +struct device; /* make these flag values available regardless of GPIO kconfig options */ -#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) - -/* Gpio pin is active-low */ -#define GPIOF_ACTIVE_LOW (1 << 2) - -/** - * 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; -}; +#define GPIOF_IN ((1 << 0)) +#define GPIOF_OUT_INIT_LOW ((0 << 0) | (0 << 1)) +#define GPIOF_OUT_INIT_HIGH ((0 << 0) | (1 << 1)) #ifdef CONFIG_GPIOLIB - -#include <linux/gpio/consumer.h> - /* * "valid" GPIO numbers are nonnegative and may be passed to * setup routines like gpio_request(). Only some valid numbers @@ -68,13 +47,6 @@ static inline bool gpio_is_valid(int number) * extra memory (for code and for per-GPIO table entries). */ -/* - * At the end we want all GPIOs to be dynamically allocated from 0. - * However, some legacy drivers still perform fixed allocation. - * Until they are all fixed, leave 0-512 space for them. - */ -#define GPIO_DYNAMIC_BASE 512 - /* Always use the library code for GPIO management calls, * or when sleeping may be involved. */ @@ -96,7 +68,7 @@ static inline int gpio_get_value_cansleep(unsigned gpio) } static inline void gpio_set_value_cansleep(unsigned gpio, int value) { - return gpiod_set_raw_value_cansleep(gpio_to_desc(gpio), value); + gpiod_set_raw_value_cansleep(gpio_to_desc(gpio), value); } static inline int gpio_get_value(unsigned gpio) @@ -105,7 +77,7 @@ static inline int gpio_get_value(unsigned gpio) } static inline void gpio_set_value(unsigned gpio, int value) { - return gpiod_set_raw_value(gpio_to_desc(gpio), value); + gpiod_set_raw_value(gpio_to_desc(gpio), value); } static inline int gpio_to_irq(unsigned gpio) @@ -114,12 +86,7 @@ static inline int gpio_to_irq(unsigned gpio) } int gpio_request_one(unsigned gpio, unsigned long flags, const char *label); -int gpio_request_array(const struct gpio *array, size_t num); -void gpio_free_array(const struct gpio *array, size_t num); -/* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */ - -int devm_gpio_request(struct device *dev, unsigned gpio, const char *label); int devm_gpio_request_one(struct device *dev, unsigned gpio, unsigned long flags, const char *label); @@ -146,11 +113,6 @@ static inline int gpio_request_one(unsigned gpio, return -ENOSYS; } -static inline int gpio_request_array(const struct gpio *array, size_t num) -{ - return -ENOSYS; -} - static inline void gpio_free(unsigned gpio) { might_sleep(); @@ -159,14 +121,6 @@ static inline void gpio_free(unsigned gpio) WARN_ON(1); } -static inline void gpio_free_array(const struct gpio *array, size_t num) -{ - might_sleep(); - - /* GPIO can never have been requested */ - WARN_ON(1); -} - static inline int gpio_direction_input(unsigned gpio) { return -ENOSYS; @@ -210,13 +164,6 @@ static inline int gpio_to_irq(unsigned gpio) return -EINVAL; } -static inline int devm_gpio_request(struct device *dev, unsigned gpio, - const char *label) -{ - WARN_ON(1); - return -EINVAL; -} - static inline int devm_gpio_request_one(struct device *dev, unsigned gpio, unsigned long flags, const char *label) { @@ -225,5 +172,5 @@ static inline int devm_gpio_request_one(struct device *dev, unsigned gpio, } #endif /* ! CONFIG_GPIOLIB */ - +#endif /* CONFIG_GPIOLIB_LEGACY */ #endif /* __LINUX_GPIO_H */ |