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AM335x EMDA 中断号



我想向linux系统注册一个EDMA传输完成的中断服务程序,使用的注册函数是:request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags,  const char *name, void *dev),但对于该函数的第一个参数(中断号),我不知道怎么确定。对于GPIO中断,可以使用gpio_to_irq()函数获取对应的中断号,但对于EDMA,我就不知道要调用什么函数去获取对应的中断号。