commit 3038bbdf7404ae3948385cbde30df946579d4e3a
author Jamie Iles <jamie@jamieiles.com> Thu Jul 28 16:25:41 2011 +0100
committer Grant Likely <grant.likely@secretlab.ca> Thu Jul 28 16:19:22 2011 -0600
tree 808e8eebc52995ab6e414e74adb44cf2890fcff9
parent 95b6886526bb510b8370b625a49bc0ab3b8ff10f

of/gpio: export of_gpio_simple_xlate

Allow GPIO drivers to use of_gpio_simple_xlate.  This is useful for the
generic GPIO driver for example where gpio_chip is embedded in
bgpio_chip and doesn't need of_mm_gpio_chip but has a simple 1:1 GPIO
mapping.

Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

include/linux/of_gpio.h

diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h
index aec8025..52280a2 100644
--- a/include/linux/of_gpio.h
+++ b/include/linux/of_gpio.h
@@ -57,6 +57,8 @@
 extern void of_gpiochip_add(struct gpio_chip *gc);
 extern void of_gpiochip_remove(struct gpio_chip *gc);
 extern struct gpio_chip *of_node_to_gpiochip(struct device_node *np);
+extern int of_gpio_simple_xlate(struct gpio_chip *gc, struct device_node *np,
+				const void *gpio_spec, u32 *flags);
 
 #else /* CONFIG_OF_GPIO */
 
@@ -72,6 +74,13 @@
 	return 0;
 }
 
+static inline int of_gpio_simple_xlate(struct gpio_chip *gc,
+				       struct device_node *np,
+				       const void *gpio_spec, u32 *flags)
+{
+	return -ENOSYS;
+}
+
 static inline void of_gpiochip_add(struct gpio_chip *gc) { }
 static inline void of_gpiochip_remove(struct gpio_chip *gc) { }