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authorLinus Walleij <linus.walleij@linaro.org>2012-11-20 17:25:07 +0400
committerLinus Walleij <linus.walleij@linaro.org>2012-11-21 11:55:12 +0400
commit9afbefb227792a3c195085d662050dcca748f521 (patch)
tree6ca22f39a4d97a73b2fb37472af596c159210ea7 /include/linux/pinctrl
parent8f23ca1a73a096f21e6618d8e23df613daa5e532 (diff)
downloadlinux-9afbefb227792a3c195085d662050dcca748f521.tar.xz
pinctrl: add function to retrieve range from pin
This adds a function to the pinctrl core to retrieve the GPIO range associated with a certain pin for a certain controller. This is needed when a pinctrl driver want to look up the corresponding struct gpio_chip for a certain pin. As the GPIO drivers can now create these ranges themselves, the pinctrl driver no longer knows about all its associated GPIO chips. Reviewed-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/pinctrl')
-rw-r--r--include/linux/pinctrl/pinctrl.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index 7dee9acbd271..04d6700d99af 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -139,6 +139,9 @@ extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev,
extern struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname,
struct pinctrl_gpio_range *range);
+extern struct pinctrl_gpio_range *
+pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev,
+ unsigned int pin);
#ifdef CONFIG_OF
extern struct pinctrl_dev *of_pinctrl_get(struct device_node *np);