diff options
| author | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-09-05 20:52:55 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-10-13 09:05:57 +0200 |
| commit | 8c85a102fc4e5c0c942c10677fa43f7a19baa92f (patch) | |
| tree | 966ed4fa3777ba5e516243a414116a500b2dbede | |
| parent | 9acdf6209f226846cc1e354a6b3da3c927898926 (diff) | |
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>
| -rw-r--r-- | drivers/gpio/gpiolib.c | 13 | ||||
| -rw-r--r-- | include/linux/gpio/driver.h | 3 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 9febaef6767d1..cbafcd95243e8 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -242,6 +242,19 @@ struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) EXPORT_SYMBOL_GPL(gpiod_to_gpio_device); /** + * gpio_device_get_base() - Get the base GPIO number allocated by this device + * @gdev: GPIO device + * + * Returns: + * First GPIO number in the global GPIO numberspace for this device. + */ +int gpio_device_get_base(struct gpio_device *gdev) +{ + return gdev->base; +} +EXPORT_SYMBOL_GPL(gpio_device_get_base); + +/** * gpio_device_get_chip() - Get the gpio_chip implementation of this GPIO device * @gdev: GPIO device * diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index d231c4f31cb43..1d454dc944b37 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -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> |