-/* GPIO configuration register bits */
-#define MAX310X_GPIOCFG_GP0OUT_BIT (1 << 0) /* GPIO 0 output enable */
-#define MAX310X_GPIOCFG_GP1OUT_BIT (1 << 1) /* GPIO 1 output enable */
-#define MAX310X_GPIOCFG_GP2OUT_BIT (1 << 2) /* GPIO 2 output enable */
-#define MAX310X_GPIOCFG_GP3OUT_BIT (1 << 3) /* GPIO 3 output enable */
-#define MAX310X_GPIOCFG_GP0OD_BIT (1 << 4) /* GPIO 0 open-drain enable */
-#define MAX310X_GPIOCFG_GP1OD_BIT (1 << 5) /* GPIO 1 open-drain enable */
-#define MAX310X_GPIOCFG_GP2OD_BIT (1 << 6) /* GPIO 2 open-drain enable */
-#define MAX310X_GPIOCFG_GP3OD_BIT (1 << 7) /* GPIO 3 open-drain enable */
-
-/* GPIO DATA register bits */
-#define MAX310X_GPIODATA_GP0OUT_BIT (1 << 0) /* GPIO 0 output value */
-#define MAX310X_GPIODATA_GP1OUT_BIT (1 << 1) /* GPIO 1 output value */
-#define MAX310X_GPIODATA_GP2OUT_BIT (1 << 2) /* GPIO 2 output value */
-#define MAX310X_GPIODATA_GP3OUT_BIT (1 << 3) /* GPIO 3 output value */
-#define MAX310X_GPIODATA_GP0IN_BIT (1 << 4) /* GPIO 0 input value */
-#define MAX310X_GPIODATA_GP1IN_BIT (1 << 5) /* GPIO 1 input value */
-#define MAX310X_GPIODATA_GP2IN_BIT (1 << 6) /* GPIO 2 input value */
-#define MAX310X_GPIODATA_GP3IN_BIT (1 << 7) /* GPIO 3 input value */
-