From: Linus Walleij <linus.walleij@linaro.org>
To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>
Cc: linux-kernel@vger.kernel.org,
Charles Keepax <ckeepax@opensource.cirrus.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH 06/10] gpio: Export gpiod_get_from_of_node()
Date: Wed, 28 Nov 2018 11:43:46 +0100 [thread overview]
Message-ID: <20181128104350.31902-7-linus.walleij@linaro.org> (raw)
In-Reply-To: <20181128104350.31902-1-linus.walleij@linaro.org>
This function already exist inside gpiolib, we were just
reluctant to make it available to the kernel at large as
the devm_* seemed to be enough for anyone.
However we found out that regulators need to do their own
lifecycle/refcounting on GPIO descriptors and explicitly
call gpiod_put() when done with a descriptor, so export
this function so we can hand the refcounting over to the
regulator core for these descriptors after retrieveal.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/gpio/gpiolib.h | 6 ------
include/linux/gpio/consumer.h | 13 +++++++++++++
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 087d865286a0..bc57f0dc5953 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -201,12 +201,6 @@ int gpiod_set_array_value_complex(bool raw, bool can_sleep,
struct gpio_array *array_info,
unsigned long *value_bitmap);
-/* This is just passed between gpiolib and devres */
-struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
- const char *propname, int index,
- enum gpiod_flags dflags,
- const char *label);
-
extern struct spinlock gpio_lock;
extern struct list_head gpio_devices;
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index f2f887795d43..348885f2f3d3 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -172,6 +172,10 @@ int desc_to_gpio(const struct gpio_desc *desc);
struct device_node;
struct fwnode_handle;
+struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
+ const char *propname, int index,
+ enum gpiod_flags dflags,
+ const char *label);
struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
struct device_node *node,
const char *propname, int index,
@@ -517,6 +521,15 @@ static inline int desc_to_gpio(const struct gpio_desc *desc)
struct device_node;
struct fwnode_handle;
+static inline
+struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
+ const char *propname, int index,
+ enum gpiod_flags dflags,
+ const char *label)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
static inline
struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
struct device_node *node,
--
2.19.1
next prev parent reply other threads:[~2018-11-28 10:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-28 10:43 [PATCH 00/10] Regulator ena_gpiod fixups Linus Walleij
2018-11-28 10:43 ` [PATCH 01/10] regulator: fixed: Let core handle GPIO descriptor Linus Walleij
2018-11-28 10:43 ` [PATCH 02/10] regulator: lm363x: " Linus Walleij
2018-11-28 10:43 ` [PATCH 03/10] regulator: lp8788-ldo: " Linus Walleij
2018-11-28 10:43 ` [PATCH 04/10] regulator: max8952: " Linus Walleij
2018-11-28 10:43 ` [PATCH 05/10] regulator: max8973: " Linus Walleij
2018-11-28 10:43 ` Linus Walleij [this message]
2018-11-28 10:43 ` [PATCH 07/10] regulator: da9211: Let core handle GPIO descriptors Linus Walleij
2018-11-28 15:11 ` Charles Keepax
2018-11-28 10:43 ` [PATCH 08/10] regulator: max77686: Let core handle GPIO descriptor Linus Walleij
2018-11-28 15:24 ` Charles Keepax
2018-11-30 9:07 ` Linus Walleij
2018-11-28 10:43 ` [PATCH 09/10] regulator: s5m8767: Let core handle GPIO descriptors Linus Walleij
2018-11-28 15:17 ` Charles Keepax
2018-11-28 10:43 ` [PATCH 10/10] regulator: tps65090: " Linus Walleij
2018-11-28 15:18 ` Charles Keepax
2018-11-28 15:22 ` [PATCH 00/10] Regulator ena_gpiod fixups Charles Keepax
2018-11-29 15:52 ` Linus Walleij
2018-11-29 16:29 ` Mark Brown
2018-11-29 18:38 ` Bartosz Golaszewski
2018-11-29 19:01 ` Mark Brown
2018-11-30 8:35 ` Bartosz Golaszewski
2018-11-30 10:56 ` Linus Walleij
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