--- zzzz-none-000/linux-5.4.213/include/linux/gpio/driver.h	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/include/linux/gpio/driver.h	2024-08-14 09:02:08.000000000 +0000
@@ -372,6 +372,13 @@
 	void			(*dbg_show)(struct seq_file *s,
 						struct gpio_chip *chip);
 
+#ifdef CONFIG_GPIOLIB_AVM_EXTENSION
+	int			(*set_function)(struct gpio_chip *chip,
+						unsigned int offset, unsigned int function);
+	int			(*get_function)(struct gpio_chip *chip,
+						unsigned int offset);
+#endif
+
 	int			(*init_valid_mask)(struct gpio_chip *chip,
 						   unsigned long *valid_mask,
 						   unsigned int ngpios);
@@ -500,7 +507,9 @@
 extern void gpiochip_remove(struct gpio_chip *chip);
 extern int devm_gpiochip_add_data(struct device *dev, struct gpio_chip *chip,
 				  void *data);
-
+#ifdef CONFIG_GPIOLIB_AVM_EXTENSION
+extern struct gpio_chip *gpiochip_avm_find_by_name(const char *name);
+#endif
 extern struct gpio_chip *gpiochip_find(void *data,
 			      int (*match)(struct gpio_chip *chip, void *data));