diff options
Diffstat (limited to 'include/linux/gpio.h')
| -rw-r--r-- | include/linux/gpio.h | 39 |
1 files changed, 10 insertions, 29 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 7ecc25c543ce..2d105be7bbc3 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, @@ -16,18 +16,10 @@ struct device; -/* see Documentation/driver-api/gpio/legacy.rst */ - /* 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) +#define GPIOF_IN ((1 << 0)) +#define GPIOF_OUT_INIT_LOW ((0 << 0) | (0 << 1)) +#define GPIOF_OUT_INIT_HIGH ((0 << 0) | (1 << 1)) /* Gpio pin is active-low */ #define GPIOF_ACTIVE_LOW (1 << 2) @@ -74,6 +66,12 @@ static inline bool gpio_is_valid(int number) * Until they are all fixed, leave 0-512 space for them. */ #define GPIO_DYNAMIC_BASE 512 +/* + * Define the maximum of the possible GPIO in the global numberspace. + * While the GPIO base and numbers are positive, we limit it with signed + * maximum as a lot of code is using negative values for special cases. + */ +#define GPIO_DYNAMIC_MAX INT_MAX /* Always use the library code for GPIO management calls, * or when sleeping may be involved. @@ -114,10 +112,6 @@ 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, @@ -146,11 +140,6 @@ 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 +148,6 @@ 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; |