1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/gpio/consumer.h>
9 #include <linux/gpio/driver.h>
11 #include <linux/gpio.h>
18 void gpio_free(unsigned gpio)  in gpio_free()  argument
20 	gpiod_free(gpio_to_desc(gpio));  in gpio_free()
25  * gpio_request_one - request a single GPIO with initial configuration
26  * @gpio:	the GPIO number
27  * @flags:	GPIO configuration as specified by GPIOF_*
28  * @label:	a literal description string of this GPIO
35 int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)  in gpio_request_one()  argument
41 	desc = gpio_to_desc(gpio);  in gpio_request_one()
43 		return -EPROBE_DEFER;  in gpio_request_one()
68 int gpio_request(unsigned gpio, const char *label)  in gpio_request()  argument
73 	desc = gpio_to_desc(gpio);  in gpio_request()
75 		return -EPROBE_DEFER;  in gpio_request()
83 	unsigned *gpio = res;  in devm_gpio_release()  local
85 	gpio_free(*gpio);  in devm_gpio_release()
89  * devm_gpio_request - request a GPIO for a managed device
90  * @dev: device to request the GPIO for
91  * @gpio: GPIO to allocate
92  * @label: the name of the requested GPIO
104 int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)  in devm_gpio_request()  argument
111 		return -ENOMEM;  in devm_gpio_request()
113 	rc = gpio_request(gpio, label);  in devm_gpio_request()
119 	*dr = gpio;  in devm_gpio_request()
127  * devm_gpio_request_one - request a single GPIO with initial setup
129  * @gpio: the GPIO number
130  * @flags: GPIO configuration as specified by GPIOF_*
131  * @label: a literal description string of this GPIO
138 int devm_gpio_request_one(struct device *dev, unsigned gpio,  in devm_gpio_request_one()  argument
146 		return -ENOMEM;  in devm_gpio_request_one()
148 	rc = gpio_request_one(gpio, flags, label);  in devm_gpio_request_one()
154 	*dr = gpio;  in devm_gpio_request_one()