AD7768_REG_GPIO_CONTROL
ret = regmap_clear_bits(st->regmap, AD7768_REG_GPIO_CONTROL,
ret = regmap_set_bits(st->regmap, AD7768_REG_GPIO_CONTROL,
ret = regmap_read(st->regmap, AD7768_REG_GPIO_CONTROL, &val);
ret = regmap_read(st->regmap, AD7768_REG_GPIO_CONTROL, &val);
ret = regmap_write(st->regmap, AD7768_REG_GPIO_CONTROL,