set_irq_type() -- 设置中断触发类型/方式

linux-2.6.21.7/kernel/irq/chip.c ------------------------------------------------ /** *    set_irq_type - set the irq type for an irq *    @irq:    irq number *    @type:    interrupt type - see include/linux/interrupt.h */ int  set_irq_type(unsigned int irq, unsigned int type) linux-2.6.21.7/include/linux/interrupt.h ------------------------------------------------ #define IRQF_TRIGGER_NONE       0x00000000 #define  IRQF_TRIGGER_RISING     0x00000001  /* 上升沿触发中断 */ #define IRQF_TRIGGER_FALLING    0x00000002 #define IRQF_TRIGGER_HIGH       0x00000004 #define IRQF_TRIGGER_LOW        0x00000008 #define IRQF_TRIGGER_MASK       (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW | \ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING) #define IRQF_TRIGGER_PROBE      0x00000010