From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] gpio: add gpio_add_lookup_tables() to add several tables at once
Date: Tue, 25 Jul 2017 13:58:00 -0700 [thread overview]
Message-ID: <20170725205800.GA25245@dtor-ws> (raw)
When converting legacy board to use gpiod API() there migt be several
lookup tables in board file, let's provide a way to register them all at
once.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/gpio/gpiolib.c | 18 ++++++++++++++++++
include/linux/gpio/machine.h | 2 ++
2 files changed, 20 insertions(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index a42a1eea5714..f8f4f8b61db8 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -3010,6 +3010,24 @@ 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 table of consumers to register
+ * @n: number of tables in the list
+ */
+void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables,
+ unsigned int 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..6f7ddce88fb8 100644
--- a/include/linux/gpio/machine.h
+++ b/include/linux/gpio/machine.h
@@ -58,6 +58,8 @@ 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,
+ unsigned int n);
void gpiod_remove_lookup_table(struct gpiod_lookup_table *table);
#else
static inline
--
2.14.0.rc0.400.g1c36432dff-goog
--
Dmitry
next reply other threads:[~2017-07-25 20:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-25 20:58 Dmitry Torokhov [this message]
2017-07-26 10:21 ` [PATCH] gpio: add gpio_add_lookup_tables() to add several tables at once Andy Shevchenko
2017-08-01 19:24 ` Dmitry Torokhov
2017-08-02 12:06 ` Andy Shevchenko
2017-08-07 12:18 ` Linus Walleij
2017-08-02 8:38 ` Mika Westerberg
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