--- zzzz-none-000/linux-3.10.107/include/linux/of_gpio.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/of_gpio.h	2021-02-04 17:41:59.000000000 +0000
@@ -29,6 +29,7 @@
  */
 enum of_gpio_flags {
 	OF_GPIO_ACTIVE_LOW = 0x1,
+	OF_GPIO_SINGLE_ENDED = 0x2,
 };
 
 #ifdef CONFIG_OF_GPIO
@@ -52,8 +53,9 @@
 
 extern int of_mm_gpiochip_add(struct device_node *np,
 			      struct of_mm_gpio_chip *mm_gc);
+extern void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc);
 
-extern void of_gpiochip_add(struct gpio_chip *gc);
+extern int of_gpiochip_add(struct gpio_chip *gc);
 extern void of_gpiochip_remove(struct gpio_chip *gc);
 extern int of_gpio_simple_xlate(struct gpio_chip *gc,
 				const struct of_phandle_args *gpiospec,
@@ -75,7 +77,7 @@
 	return -ENOSYS;
 }
 
-static inline void of_gpiochip_add(struct gpio_chip *gc) { }
+static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
 static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
 
 #endif /* CONFIG_OF_GPIO */
@@ -116,16 +118,6 @@
 	return of_gpio_named_count(np, "gpios");
 }
 
-/**
- * of_get_gpio_flags() - Get a GPIO number and flags to use with GPIO API
- * @np:		device node to get GPIO from
- * @index:	index of the GPIO
- * @flags:	a flags pointer to fill in
- *
- * Returns GPIO number to use with Linux generic GPIO API, or one of the errno
- * value on the error condition. If @flags is not NULL the function also fills
- * in flags for the GPIO.
- */
 static inline int of_get_gpio_flags(struct device_node *np, int index,
 		      enum of_gpio_flags *flags)
 {