PIN_FUNC_MASK      35 drivers/pinctrl/sprd/pinctrl-sprd.c #define PIN_FUNC_SEL_1			~PIN_FUNC_MASK
PIN_FUNC_MASK      38 drivers/pinctrl/sprd/pinctrl-sprd.c #define PIN_FUNC_SEL_4			PIN_FUNC_MASK
PIN_FUNC_MASK     421 drivers/pinctrl/sprd/pinctrl-sprd.c 		reg &= ~PIN_FUNC_MASK;