#define AXP152_POWEROFF (1 << 7)
-int axp152_set_dcdc2(int mvolt);
-int axp152_set_dcdc3(int mvolt);
-int axp152_set_dcdc4(int mvolt);
-int axp152_set_ldo2(int mvolt);
-int axp152_init(void);
+/* For axp_gpio.c */
+#define AXP_GPIO0_CTRL 0x90
+#define AXP_GPIO1_CTRL 0x91
+#define AXP_GPIO2_CTRL 0x92
+#define AXP_GPIO3_CTRL 0x93
+#define AXP_GPIO_CTRL_OUTPUT_LOW 0x00 /* Drive pin low */
+#define AXP_GPIO_CTRL_OUTPUT_HIGH 0x01 /* Drive pin high */
+#define AXP_GPIO_CTRL_INPUT 0x02 /* Input */
+#define AXP_GPIO_STATE 0x97
+#define AXP_GPIO_STATE_OFFSET 0