| Message ID | 20170815045955.GA40297@dtor-ws |
|---|---|
| State | New |
| Headers | show |
On Tue, Aug 15, 2017 at 6:59 AM, Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote: > 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> > --- > > V2: > - added the !CONFIG_GPIOLIB stub (Andy) > - changed size from unsigned int to size_t at Mika's suggestion > - added Reviewed-bys. Patch applied! Usually I don't like adding APIs with no users, but you have a good track record so I believe you are going to put this to good use in coming merge windows. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index a42a1eea5714..667289ca4913 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3010,6 +3010,23 @@ void gpiod_add_lookup_table(struct gpiod_lookup_table *table) mutex_unlock(&gpio_lookup_lock); } +/** + * 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_remove_lookup_table() - unregister GPIO device consumers * @table: table of consumers to unregister diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index f738d50cc17d..ec80fa7c0c7d 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -58,11 +58,14 @@ 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