0x07FC
Reputation: 523
Difference between IRQ and FIQ in kernel?
What is the difference between IRQ and FIQ as per the Linux API wise? Are they use same api? Is the difference only inside ARM core or is it do do with the kernel function calls also?
Upvotes: 0
Views: 1270
Answers (1)
John Szakmeister
Reputation: 47102
No, they use different APIs. The best place to look is in arch/arm/kernel/fiq.c of the kernel tree. It looks like there are a few drivers in the tree that use it that may be helpful as examples.
Upvotes: 1
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