1 files changed, 15 insertions, 0 deletions

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 4f3d75e1ad39..c7376bf80b06 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -31,6 +31,7 @@ static inline int gpio_is_valid(int number)
 struct device;
 struct seq_file;
 struct module;
+struct device_node;
 
 /**
  * struct gpio_chip - abstract a GPIO controller
@@ -106,6 +107,17 @@ struct gpio_chip {
         const char              *const *names;
         unsigned                can_sleep:1;
         unsigned                exported:1;
+
+#if defined(CONFIG_OF_GPIO)
+        /*
+         * If CONFIG_OF is enabled, then all GPIO controllers described in the
+         * device tree automatically may have an OF translation
+         */
+        struct device_node *of_node;
+        int of_gpio_n_cells;
+        int (*of_xlate)(struct gpio_chip *gc, struct device_node *np,
+                        const void *gpio_spec, u32 *flags);
+#endif
 };
 
 extern const char *gpiochip_is_requested(struct gpio_chip *chip,
@@ -115,6 +127,9 @@ extern int __must_check gpiochip_reserve(int start, int ngpio);
 /* add/remove chips */
 extern int gpiochip_add(struct gpio_chip *chip);
 extern int __must_check gpiochip_remove(struct gpio_chip *chip);
+extern struct gpio_chip *gpiochip_find(void *data,
+                                        int (*match)(struct gpio_chip *chip,
+                                                     void *data));
 
 
 /* Always use the library code for GPIO management calls,