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gpiolib: provide gpio_device_get_base()

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Let's start adding getters for the opaque struct gpio_device. Start with
a function allowing to retrieve the base GPIO number.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Bartosz Golaszewski
2023-09-05 20:52:55 +02:00
parent 9acdf6209f
commit 8c85a102fc
2 changed files with 16 additions and 0 deletions
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include/linux/gpio/driver.h
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@@ -787,6 +787,9 @@ void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset);
struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);
struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc);
/* struct gpio_device getters */
int gpio_device_get_base(struct gpio_device *gdev);
#else /* CONFIG_GPIOLIB */
#include <linux/err.h>