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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-05-02 12:46:46 +0100
committerGrant Likely <grant.likely@secretlab.ca>2012-05-18 16:48:35 -0600
commit09d71ff19404b3957fab6de942fb8026ccfd8524 (patch)
treeba3680f5b79ea1fbeae073ab7cb28c9bdcad7e60 /include/linux/gpio.h
parenteb1567f7ad0032ba7b02b878e352f191d53dc228 (diff)
downloadop-kernel-dev-09d71ff19404b3957fab6de942fb8026ccfd8524.zip
op-kernel-dev-09d71ff19404b3957fab6de942fb8026ccfd8524.tar.gz
gpiolib: Implement devm_gpio_request_one()
Allow drivers to use the modern request and configure idiom together with devres. As with plain gpio_request() and gpio_request_one() we can't implement the old school version in terms of _one() as this would force the explicit selection of a direction in gpio_request() which could break systems if we pick the wrong one. Implementing devm_gpio_request_one() in terms of devm_gpio_request() would needlessly complicate things or lead to duplication from the unmanaged version depending on how it's done. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/gpio.h')
-rw-r--r--include/linux/gpio.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 7a8816a..f07fc2d 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -106,6 +106,12 @@ static inline int gpio_request_one(unsigned gpio,
return -ENOSYS;
}
+static inline int devm_gpio_request_one(struct device *dev, unsigned gpio,
+ unsigned long flags, const char *label)
+{
+ return -ENOSYS;
+}
+
static inline int gpio_request_array(const struct gpio *array, size_t num)
{
return -ENOSYS;
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