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OpenCloudOS-Kernel/drivers/gpio/gpiolib-cdev.h

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gpiolib: split character device into gpiolib-cdev Split the cdev specific functionality out of gpiolib.c and into gpiolib-cdev.c. This improves the readability and maintainability of both the cdev and core gpiolib code. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Link: https://lore.kernel.org/r/20200616093615.5167-1-warthog618@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-16 17:36:15 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef GPIOLIB_CDEV_H
#define GPIOLIB_CDEV_H
#include <linux/device.h>
gpiolib: make cdev a build option Make the gpiolib-cdev module a build option. This allows the CDEV interface to be removed from the kernel to reduce kernel size in applications where is it not required, and provides the parent for other CDEV interface specific build options to follow. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-09-28 08:27:52 +08:00
#ifdef CONFIG_GPIO_CDEV
gpiolib: split character device into gpiolib-cdev Split the cdev specific functionality out of gpiolib.c and into gpiolib-cdev.c. This improves the readability and maintainability of both the cdev and core gpiolib code. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Link: https://lore.kernel.org/r/20200616093615.5167-1-warthog618@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-16 17:36:15 +08:00
int gpiolib_cdev_register(struct gpio_device *gdev, dev_t devt);
void gpiolib_cdev_unregister(struct gpio_device *gdev);
gpiolib: make cdev a build option Make the gpiolib-cdev module a build option. This allows the CDEV interface to be removed from the kernel to reduce kernel size in applications where is it not required, and provides the parent for other CDEV interface specific build options to follow. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-09-28 08:27:52 +08:00
#else
static inline int gpiolib_cdev_register(struct gpio_device *gdev, dev_t devt)
{
return 0;
}
static inline void gpiolib_cdev_unregister(struct gpio_device *gdev)
{
}
#endif /* CONFIG_GPIO_CDEV */
gpiolib: split character device into gpiolib-cdev Split the cdev specific functionality out of gpiolib.c and into gpiolib-cdev.c. This improves the readability and maintainability of both the cdev and core gpiolib code. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Link: https://lore.kernel.org/r/20200616093615.5167-1-warthog618@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-16 17:36:15 +08:00
#endif /* GPIOLIB_CDEV_H */