IRQ_TYPE_EDGE_FALLING   15 include/dt-bindings/interrupt-controller/irq.h #define IRQ_TYPE_EDGE_BOTH	(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)
IRQ_TYPE_EDGE_FALLING   81 include/linux/irq.h 	IRQ_TYPE_EDGE_BOTH	= (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING),