diff options
| author |   Linus Walleij <linus.walleij@linaro.org> | 2020-07-09 17:06:28 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-07-09 17:06:28 +0200 |
| commit | 4672a4a9fbfe316e1153682b0790af6446255a50 (patch) | |
| tree | 7103f98cd5ae99b45e2d49ef9d8a98517b1f1064 /include/linux | |
| parent | Merge tag 'gpio-fixes-for-v5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into fixes (diff) | |
| parent | Merge branch 'lee-fixes' into devel (diff) | |
Merge branch 'devel' into for-next
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/gpio/driver.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index c4f272af7af5..db82451776fc 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -474,6 +474,22 @@ struct gpio_chip { extern const char *gpiochip_is_requested(struct gpio_chip *gc, unsigned int offset); +/** + * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range + * @chip: the chip to query + * @i: loop variable + * @base: first GPIO in the range + * @size: amount of GPIOs to check starting from @base + * @label: label of current GPIO + */ +#define for_each_requested_gpio_in_range(chip, i, base, size, label) \ + for (i = 0; i < size; i++) \ + if ((label = gpiochip_is_requested(chip, base + i)) == NULL) {} else + +/* Iterates over all requested GPIO of the given @chip */ +#define for_each_requested_gpio(chip, i, label) \ + for_each_requested_gpio_in_range(chip, i, 0, chip->ngpio, label) + /* add/remove chips */ extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, struct lock_class_key *lock_key, @@ -481,7 +497,7 @@ extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, /** * gpiochip_add_data() - register a gpio_chip - * @chip: the chip to register, with chip->base initialized + * @gc: the chip to register, with chip->base initialized * @data: driver-private data associated with this chip * * Context: potentially before irqs will work |