Hi all
I am trying to use the external interrupts on the Powerpc architecture
MPC8542 .
My problem is that my driver is trying to request the external
interrupt IRQ1, and I dont know what number use in INTR_NUM:
request_irq(INTR_NUM, , , , )
As per the MPC85xx documentation
Documentation/powerpc/dts-bindings/fsl/mpic.txt
about the implementation of interrupts virtual numbers
the external interrupt virtual irq number for IRQ1 should be 1
but when i try to give INTR_NUM ins request_irq as 1 it gives error .
When i use irq_create_mapping() it gives me output as 16.. and it registers
.. but the problem is it is not fixed
neither it gives interrupts .
when i remove and add it registers to some other addresses
i even tried irq_of_parse_map()
for_each_node_by_type(np,"interrupt-controller"){
if(of_device_is_compatible(np,"chrp,open-pic")){
found=np;
break;
}
}
virq = irq_of_parse_and_map(found, irq);
this always returns 0
whatever may be the irq value..
as a result the driver gives error for irq 0
--
Cheeers
Deebul !!!!!!
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