Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
gpiolib: provide gpio_device_get_base()
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>
+16
+13
drivers/gpio/gpiolib.c
+13
drivers/gpio/gpiolib.c
···
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EXPORT_SYMBOL_GPL(gpiod_to_gpio_device);
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/**
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* gpio_device_get_base() - Get the base GPIO number allocated by this device
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* @gdev: GPIO device
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*
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* Returns:
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* First GPIO number in the global GPIO numberspace for this device.
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*/
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int gpio_device_get_base(struct gpio_device *gdev)
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{
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return gdev->base;
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}
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EXPORT_SYMBOL_GPL(gpio_device_get_base);
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/**
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* gpio_device_get_chip() - Get the gpio_chip implementation of this GPIO device
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* @gdev: GPIO device
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*
+3
include/linux/gpio/driver.h
+3
include/linux/gpio/driver.h
···
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struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);
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struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc);
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/* struct gpio_device getters */
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int gpio_device_get_base(struct gpio_device *gdev);
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#else /* CONFIG_GPIOLIB */
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#include <linux/err.h>