wakeup interrupt source detection

I have a system in which DA-14580 can wake up using multiple interrupts but after interrupt is triggered ,i want to know which PIN actually trigged that interrupt ,
one way is to read the port PINs as soon as DA-14580 wakes up ,but its sounds like a hit and miss approach.
Is there any register int which IRQ status is saved so that i can read and figure out

Thanks
Mohit Maheshwari