PULL_PINS_PER_REG  285 drivers/pinctrl/sunxi/pinctrl-sunxi.h 	offset += pin % PINS_PER_BANK / PULL_PINS_PER_REG * 0x04;
PULL_PINS_PER_REG  291 drivers/pinctrl/sunxi/pinctrl-sunxi.h 	u32 pin_num = pin % PULL_PINS_PER_REG;