DLEVEL_PINS_PER_REG  270 drivers/pinctrl/sunxi/pinctrl-sunxi.h 	offset += pin % PINS_PER_BANK / DLEVEL_PINS_PER_REG * 0x04;
DLEVEL_PINS_PER_REG  276 drivers/pinctrl/sunxi/pinctrl-sunxi.h 	u32 pin_num = pin % DLEVEL_PINS_PER_REG;