Messages in this thread | | | Date | Tue, 18 Feb 2014 15:18:49 +0800 | Subject | Does it need to implement irq_set_type method in the ioapic_chip? | From | carl peng <> |
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Hi,
I'm sorry to bother you! Does it need to implement irq_set_type method in the ioapic_chip(arch/x86/kernel/apic/io_apic.c) structure?
Recently, I developed a device driver based on x86. The device uses a falling edge interrupt trigger mode, so I have to set the trigger mode in the request_irq function, but found that it can not be set successfully, it turn out to be that the irq_set_type method is not be implemented in the ioapic_chip structure, that is to say, for APIC interrupt controller, can not set the trigger mode.
So I would like to consult with you for two questions: 1. Does it need to implement irq_set_type method in the ioapic_chip structure? 2. if no need to implement it, how can device driver set the trigger mode of APIC interrupt controller pin?
Thank you! Carl
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