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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-08-14 21:59:55 -0700 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-08-23 09:16:35 +0200 |
| commit | 3946d18765be0b0fe278bea4f87a54cf13858019 (patch) | |
| tree | 4709f78ae2fb3857c7efaf8ef39c7008b667d724 | |
| parent | 33f5dc84680878fb077bd4bcab587e4a5ce228f7 (diff) | |
| download | linux-3946d18765be0b0fe278bea4f87a54cf13858019.tar.gz linux-3946d18765be0b0fe278bea4f87a54cf13858019.tar.bz2 linux-3946d18765be0b0fe278bea4f87a54cf13858019.zip | |
gpio: add gpio_add_lookup_tables() to add several tables at once
When converting legacy board to use gpiod API() there might be several
lookup tables in board file, let's provide a way to register them all at
once.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/gpio/gpiolib.c | 17 | ||||
| -rw-r--r-- | include/linux/gpio/machine.h | 3 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 18bba1748a35..e452768f316d 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3011,6 +3011,23 @@ void gpiod_set_raw_array_value_cansleep(unsigned int array_size, EXPORT_SYMBOL_GPL(gpiod_set_raw_array_value_cansleep); /** + * gpiod_add_lookup_tables() - register GPIO device consumers + * @tables: list of tables of consumers to register + * @n: number of tables in the list + */ +void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n) +{ + unsigned int i; + + mutex_lock(&gpio_lookup_lock); + + for (i = 0; i < n; i++) + list_add_tail(&tables[i]->list, &gpio_lookup_list); + + mutex_unlock(&gpio_lookup_lock); +} + +/** * gpiod_set_array_value_cansleep() - assign values to an array of GPIOs * @array_size: number of elements in the descriptor / value arrays * @desc_array: array of GPIO descriptors whose values will be assigned diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index 6e76b16fcade..ba4ccfd900f9 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -60,11 +60,14 @@ struct gpiod_lookup_table { #ifdef CONFIG_GPIOLIB void gpiod_add_lookup_table(struct gpiod_lookup_table *table); +void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n); void gpiod_remove_lookup_table(struct gpiod_lookup_table *table); #else static inline void gpiod_add_lookup_table(struct gpiod_lookup_table *table) {} static inline +void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n) {} +static inline void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) {} #endif |