From 6c339dda4ecd1ce7fba5e1181b3e3d8ede1e8710 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Tue, 20 Nov 2012 14:25:07 +0100
Subject: [PATCH] --- yaml --- r: 336431 b: refs/heads/master c:
 9afbefb227792a3c195085d662050dcca748f521 h: refs/heads/master i:   336429:
 f77e119de376310319a8d6492bf9f6e95679f064   336427:
 178248c4177c6ec1c14f8ad13b927167262825c0   336423:
 e2ac5020ca2757f70d862c1108aaf8a48abf2373   336415:
 939191060dd1ebd69b046d8ebdfa21c46fd91543 v: v3

---
 [refs]                                |  2 +-
 trunk/drivers/pinctrl/core.c          | 24 ++++++++++++++++++++++++
 trunk/include/linux/pinctrl/pinctrl.h |  3 +++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index b8db6f2d6aba..53ac3561d345 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8f23ca1a73a096f21e6618d8e23df613daa5e532
+refs/heads/master: 9afbefb227792a3c195085d662050dcca748f521
diff --git a/trunk/drivers/pinctrl/core.c b/trunk/drivers/pinctrl/core.c
index 33af811a6a3c..5cdee8669ea3 100644
--- a/trunk/drivers/pinctrl/core.c
+++ b/trunk/drivers/pinctrl/core.c
@@ -363,6 +363,30 @@ struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname,
 }
 EXPORT_SYMBOL_GPL(pinctrl_find_and_add_gpio_range);
 
+/**
+ * pinctrl_find_gpio_range_from_pin() - locate the GPIO range for a pin
+ * @pctldev: the pin controller device to look in
+ * @pin: a controller-local number to find the range for
+ */
+struct pinctrl_gpio_range *
+pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev,
+				 unsigned int pin)
+{
+	struct pinctrl_gpio_range *range = NULL;
+
+	/* Loop over the ranges */
+	list_for_each_entry(range, &pctldev->gpio_ranges, node) {
+		/* Check if we're in the valid range */
+		if (pin >= range->pin_base &&
+		    pin < range->pin_base + range->npins) {
+			return range;
+		}
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(pinctrl_find_gpio_range_from_pin);
+
 /**
  * pinctrl_remove_gpio_range() - remove a range of GPIOs fro a pin controller
  * @pctldev: pin controller device to remove the range from
diff --git a/trunk/include/linux/pinctrl/pinctrl.h b/trunk/include/linux/pinctrl/pinctrl.h
index 7dee9acbd271..04d6700d99af 100644
--- a/trunk/include/linux/pinctrl/pinctrl.h
+++ b/trunk/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);