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| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2020-03-24 14:56:50 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2020-03-27 22:36:29 +0100 |
| commit | 8ced32ffadc857eaa45d62c0c5a34cf6f37168ea (patch) | |
| tree | 2a216644d93a9fef8233ecbae085043a9b4e958e /include/linux/gpio | |
| parent | Merge tag 'v5.6-rc7' into devel (diff) | |
| download | wireguard-linux-8ced32ffadc857eaa45d62c0c5a34cf6f37168ea.tar.xz wireguard-linux-8ced32ffadc857eaa45d62c0c5a34cf6f37168ea.zip | |
gpiolib: Introduce gpiod_set_config()
The GPIO Aggregator will need a method to forward a .set_config() call
to its parent gpiochip. This requires obtaining the gpio_chip and
offset for a given gpio_desc. While gpiod_to_chip() is public,
gpio_chip_hwgpio() is not, so there is currently no method to obtain the
needed GPIO offset parameter.
Hence introduce a public gpiod_set_config() helper, which invokes the
.set_config() callback through a gpio_desc pointer, like is done for
most other gpio_chip callbacks.
Rewrite the existing gpiod_set_debounce() helper as a wrapper around
gpiod_set_config(), to avoid duplication.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200324135653.6676-5-geert+renesas@glider.be
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/consumer.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index 0a72fccf60ff..901aab89d025 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -157,6 +157,7 @@ int gpiod_set_raw_array_value_cansleep(unsigned int array_size, struct gpio_array *array_info, unsigned long *value_bitmap); +int gpiod_set_config(struct gpio_desc *desc, unsigned long config); int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce); int gpiod_set_transitory(struct gpio_desc *desc, bool transitory); void gpiod_toggle_active_low(struct gpio_desc *desc); @@ -473,6 +474,13 @@ static inline int gpiod_set_raw_array_value_cansleep(unsigned int array_size, return 0; } +static inline int gpiod_set_config(struct gpio_desc *desc, unsigned long config) +{ + /* GPIO can never have been requested */ + WARN_ON(desc); + return -ENOSYS; +} + static inline int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce) { /* GPIO can never have been requested */ |