tree f4897b29c370cde5171981b11bb11aa571a2283c
parent 1559d14977b694570f010854b8192e6de034bc27
author Bartosz Golaszewski <bartosz.golaszewski@linaro.org> 1697029323 +0200
committer Bartosz Golaszewski <bartosz.golaszewski@linaro.org> 1697179804 +0200

gpiolib: provide gpiod_to_gpio_device()

Accessing struct gpio_chip backing a GPIO device is only allowed for the
actual providers of that chip.

Similarly to how we introduced gpio_device_find() in order to replace
the abused gpiochip_find(), let's introduce a counterpart to
gpiod_to_chip() that returns a reference to the GPIO device owning the
descriptor. This is done in order to later remove gpiod_to_chip()
entirely.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Peter Rosin <peda@axentia.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>