--- zzzz-none-000/linux-4.4.271/arch/mips/ath79/common.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/arch/mips/ath79/common.h	2023-04-19 10:22:28.000000000 +0000
@@ -16,6 +16,7 @@
 
 #include <linux/types.h>
 
+
 #define ATH79_MEM_SIZE_MIN	(2 * 1024 * 1024)
 #define ATH79_MEM_SIZE_MAX	(256 * 1024 * 1024)
 
@@ -25,6 +26,12 @@
 void ath79_ddr_ctrl_init(void);
 void ath79_ddr_wb_flush(unsigned int reg);
 
+void ath79_gpio_function_enable(u32 mask);
+void ath79_gpio_function_disable(u32 mask);
+void ath79_gpio_function_setup(u32 set, u32 clear);
+void ath79_gpio_function2_setup(u32 set, u32 clear);
+void ath79_gpio_output_select(unsigned gpio, u8 val);
+int ath79_gpio_direction_select(unsigned gpio, bool oe);
 void ath79_gpio_init(void);
 
 #endif /* __ATH79_COMMON_H */