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authorAlexandre Courbot <acourbot@nvidia.com>2014-05-17 14:54:50 +0900
committerLinus Walleij <linus.walleij@linaro.org>2014-05-21 11:14:46 +0200
commitf01d907582f8461546379aa415a7c6d5cfb8e5fd (patch)
treeb1e0520a32e14d14650f2eea7ad07dd149f81444
parent1aeede0b3c055665fb722a012d3cd834146fc112 (diff)
downloadop-kernel-dev-f01d907582f8461546379aa415a7c6d5cfb8e5fd.zip
op-kernel-dev-f01d907582f8461546379aa415a7c6d5cfb8e5fd.tar.gz
gpio: make of_get_named_gpiod_flags() private
of_get_named_gpiod_flags() is visible and directly usable by GPIO consumers, but it really should not as the gpiod interface relies on the simpler gpiod_get() to provide properly-configured GPIOs. of_get_named_gpiod_flags() is just used internally by gpiolib to implement gpiod_get(), and by the old of_get_named_gpio_flags() function, therefore it makes sense to make it gpiolib-private. As a side-effect, the unused (and unneeded) of_get_gpiod_flags() inline function is also removed, and of_get_named_gpio_flags() is moved from a static inline function to a regular one in gpiolib-of.c This results in all references to gpiod_* functions in of_gpio.h being gone, which is the way it should be since this file is part of the old integer GPIO interface. Changes since v1: - Fixed compilation error when CONFIG_OF_GPIO is not defined - Fixed warning due to of_gpio_flags enum not being declared in private gpiolib.h header Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpiolib-of.c14
-rw-r--r--drivers/gpio/gpiolib.h5
-rw-r--r--include/linux/of_gpio.h35
3 files changed, 22 insertions, 32 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index db98d3a..af7e25c 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -96,6 +96,20 @@ struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
}
EXPORT_SYMBOL(of_get_named_gpiod_flags);
+int of_get_named_gpio_flags(struct device_node *np, const char *list_name,
+ int index, enum of_gpio_flags *flags)
+{
+ struct gpio_desc *desc;
+
+ desc = of_get_named_gpiod_flags(np, list_name, index, flags);
+
+ if (IS_ERR(desc))
+ return PTR_ERR(desc);
+ else
+ return desc_to_gpio(desc);
+}
+EXPORT_SYMBOL(of_get_named_gpio_flags);
+
/**
* of_gpio_simple_xlate - translate gpio_spec to the GPIO number and flags
* @gc: pointer to the gpio_chip structure
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index cf09294..1a4103d 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -15,6 +15,8 @@
#include <linux/err.h>
#include <linux/device.h>
+enum of_gpio_flags;
+
/**
* struct acpi_gpio_info - ACPI GPIO specific information
* @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
@@ -46,4 +48,7 @@ acpi_get_gpiod_by_index(struct device *dev, int index,
int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label);
void gpiochip_free_own_desc(struct gpio_desc *desc);
+struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
+ const char *list_name, int index, enum of_gpio_flags *flags);
+
#endif /* GPIOLIB_H */
diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h
index f14123a..38fc050 100644
--- a/include/linux/of_gpio.h
+++ b/include/linux/of_gpio.h
@@ -19,7 +19,6 @@
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/of.h>
-#include <linux/gpio/consumer.h>
struct device_node;
@@ -48,7 +47,7 @@ static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc)
return container_of(gc, struct of_mm_gpio_chip, gc);
}
-extern struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
+extern int of_get_named_gpio_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags);
extern int of_mm_gpiochip_add(struct device_node *np,
@@ -63,10 +62,10 @@ extern int of_gpio_simple_xlate(struct gpio_chip *gc,
#else /* CONFIG_OF_GPIO */
/* Drivers may not strictly depend on the GPIO support, so let them link. */
-static inline struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
+static inline int of_get_named_gpio_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags)
{
- return ERR_PTR(-ENOSYS);
+ return -ENOSYS;
}
static inline int of_gpio_simple_xlate(struct gpio_chip *gc,
@@ -81,18 +80,6 @@ static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
#endif /* CONFIG_OF_GPIO */
-static inline int of_get_named_gpio_flags(struct device_node *np,
- const char *list_name, int index, enum of_gpio_flags *flags)
-{
- struct gpio_desc *desc;
- desc = of_get_named_gpiod_flags(np, list_name, index, flags);
-
- if (IS_ERR(desc))
- return PTR_ERR(desc);
- else
- return desc_to_gpio(desc);
-}
-
/**
* of_gpio_named_count() - Count GPIOs for a device
* @np: device node to count GPIOs for
@@ -129,22 +116,6 @@ static inline int of_gpio_count(struct device_node *np)
return of_gpio_named_count(np, "gpios");
}
-/**
- * of_get_gpiod_flags() - Get a GPIO descriptor and flags to use with GPIO API
- * @np: device node to get GPIO from
- * @index: index of the GPIO
- * @flags: a flags pointer to fill in
- *
- * Returns GPIO descriptor to use with Linux generic GPIO API, or a errno
- * value on the error condition. If @flags is not NULL the function also fills
- * in flags for the GPIO.
- */
-static inline struct gpio_desc *of_get_gpiod_flags(struct device_node *np,
- int index, enum of_gpio_flags *flags)
-{
- return of_get_named_gpiod_flags(np, "gpios", index, flags);
-}
-
static inline int of_get_gpio_flags(struct device_node *np, int index,
enum of_gpio_flags *flags)
{
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