diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib-legacy.c | 111 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.c | 105 |
3 files changed, 112 insertions, 105 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 9d3df07290f3..09c5b5643bff 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -4,6 +4,7 @@ ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG obj-$(CONFIG_GPIO_DEVRES) += devres.o obj-$(CONFIG_GPIOLIB) += gpiolib.o +obj-$(CONFIG_GPIOLIB) += gpiolib-legacy.o obj-$(CONFIG_OF_GPIO) += gpiolib-of.o obj-$(CONFIG_GPIO_SYSFS) += gpiolib-sysfs.o obj-$(CONFIG_GPIO_ACPI) += gpiolib-acpi.o diff --git a/drivers/gpio/gpiolib-legacy.c b/drivers/gpio/gpiolib-legacy.c new file mode 100644 index 000000000000..eb5a4e2cee85 --- /dev/null +++ b/drivers/gpio/gpiolib-legacy.c @@ -0,0 +1,111 @@ +#include <linux/gpio/consumer.h> +#include <linux/gpio/driver.h> + +#include <linux/gpio.h> + +#include "gpiolib.h" + +void gpio_free(unsigned gpio) +{ + gpiod_free(gpio_to_desc(gpio)); +} +EXPORT_SYMBOL_GPL(gpio_free); + +/** + * gpio_request_one - request a single GPIO with initial configuration + * @gpio: the GPIO number + * @flags: GPIO configuration as specified by GPIOF_* + * @label: a literal description string of this GPIO + */ +int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) +{ + struct gpio_desc *desc; + int err; + + desc = gpio_to_desc(gpio); + + err = gpiod_request(desc, label); + if (err) + return err; + + if (flags & GPIOF_OPEN_DRAIN) + set_bit(FLAG_OPEN_DRAIN, &desc->flags); + + if (flags & GPIOF_OPEN_SOURCE) + set_bit(FLAG_OPEN_SOURCE, &desc->flags); + + if (flags & GPIOF_DIR_IN) + err = gpiod_direction_input(desc); + else + err = gpiod_direction_output_raw(desc, + (flags & GPIOF_INIT_HIGH) ? 1 : 0); + + if (err) + goto free_gpio; + + if (flags & GPIOF_EXPORT) { + err = gpiod_export(desc, flags & GPIOF_EXPORT_CHANGEABLE); + if (err) + goto free_gpio; + } + + return 0; + + free_gpio: + gpiod_free(desc); + return err; +} +EXPORT_SYMBOL_GPL(gpio_request_one); + +int gpio_request(unsigned gpio, const char *label) +{ + return gpiod_request(gpio_to_desc(gpio), label); +} +EXPORT_SYMBOL_GPL(gpio_request); + +/** + * gpio_request_array - request multiple GPIOs in a single call + * @array: array of the 'struct gpio' + * @num: how many GPIOs in the array + */ +int gpio_request_array(const struct gpio *array, size_t num) +{ + int i, err; + + for (i = 0; i < num; i++, array++) { + err = gpio_request_one(array->gpio, array->flags, array->label); + if (err) + goto err_free; + } + return 0; + +err_free: + while (i--) + gpio_free((--array)->gpio); + return err; +} +EXPORT_SYMBOL_GPL(gpio_request_array); + +/** + * gpio_free_array - release multiple GPIOs in a single call + * @array: array of the 'struct gpio' + * @num: how many GPIOs in the array + */ +void gpio_free_array(const struct gpio *array, size_t num) +{ + while (num--) + gpio_free((array++)->gpio); +} +EXPORT_SYMBOL_GPL(gpio_free_array); + +int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset) +{ + return gpiod_lock_as_irq(gpiochip_get_desc(chip, offset)); +} +EXPORT_SYMBOL_GPL(gpio_lock_as_irq); + +void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset) +{ + return gpiod_unlock_as_irq(gpiochip_get_desc(chip, offset)); +} +EXPORT_SYMBOL_GPL(gpio_unlock_as_irq); diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 7b35e5093ef5..c5509359ba88 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -845,12 +845,6 @@ done: return status; } -int gpio_request(unsigned gpio, const char *label) -{ - return gpiod_request(gpio_to_desc(gpio), label); -} -EXPORT_SYMBOL_GPL(gpio_request); - static bool __gpiod_free(struct gpio_desc *desc) { bool ret = false; @@ -891,93 +885,6 @@ void gpiod_free(struct gpio_desc *desc) WARN_ON(extra_checks); } -void gpio_free(unsigned gpio) -{ - gpiod_free(gpio_to_desc(gpio)); -} -EXPORT_SYMBOL_GPL(gpio_free); - -/** - * gpio_request_one - request a single GPIO with initial configuration - * @gpio: the GPIO number - * @flags: GPIO configuration as specified by GPIOF_* - * @label: a literal description string of this GPIO - */ -int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) -{ - struct gpio_desc *desc; - int err; - - desc = gpio_to_desc(gpio); - - err = gpiod_request(desc, label); - if (err) - return err; - - if (flags & GPIOF_OPEN_DRAIN) - set_bit(FLAG_OPEN_DRAIN, &desc->flags); - - if (flags & GPIOF_OPEN_SOURCE) - set_bit(FLAG_OPEN_SOURCE, &desc->flags); - - if (flags & GPIOF_DIR_IN) - err = gpiod_direction_input(desc); - else - err = gpiod_direction_output_raw(desc, - (flags & GPIOF_INIT_HIGH) ? 1 : 0); - - if (err) - goto free_gpio; - - if (flags & GPIOF_EXPORT) { - err = gpiod_export(desc, flags & GPIOF_EXPORT_CHANGEABLE); - if (err) - goto free_gpio; - } - - return 0; - - free_gpio: - gpiod_free(desc); - return err; -} -EXPORT_SYMBOL_GPL(gpio_request_one); - -/** - * gpio_request_array - request multiple GPIOs in a single call - * @array: array of the 'struct gpio' - * @num: how many GPIOs in the array - */ -int gpio_request_array(const struct gpio *array, size_t num) -{ - int i, err; - - for (i = 0; i < num; i++, array++) { - err = gpio_request_one(array->gpio, array->flags, array->label); - if (err) - goto err_free; - } - return 0; - -err_free: - while (i--) - gpio_free((--array)->gpio); - return err; -} -EXPORT_SYMBOL_GPL(gpio_request_array); - -/** - * gpio_free_array - release multiple GPIOs in a single call - * @array: array of the 'struct gpio' - * @num: how many GPIOs in the array - */ -void gpio_free_array(const struct gpio *array, size_t num) -{ - while (num--) - gpio_free((array++)->gpio); -} -EXPORT_SYMBOL_GPL(gpio_free_array); - /** * gpiochip_is_requested - return string iff signal was requested * @chip: controller managing the signal @@ -1545,12 +1452,6 @@ int gpiod_lock_as_irq(struct gpio_desc *desc) } EXPORT_SYMBOL_GPL(gpiod_lock_as_irq); -int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset) -{ - return gpiod_lock_as_irq(gpiochip_get_desc(chip, offset)); -} -EXPORT_SYMBOL_GPL(gpio_lock_as_irq); - /** * gpiod_unlock_as_irq() - unlock a GPIO used as IRQ * @gpio: the GPIO line to unlock from IRQ usage @@ -1567,12 +1468,6 @@ void gpiod_unlock_as_irq(struct gpio_desc *desc) } EXPORT_SYMBOL_GPL(gpiod_unlock_as_irq); -void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset) -{ - return gpiod_unlock_as_irq(gpiochip_get_desc(chip, offset)); -} -EXPORT_SYMBOL_GPL(gpio_unlock_as_irq); - /** * gpiod_get_raw_value_cansleep() - return a gpio's raw value * @desc: gpio whose value will be returned |