In the casee of your ACPI-enabled AMBA device I believe the BIOS, which provides the ACPI tables, is expected to set the interrupt type.
On February 19, 2014 4:07:09 AM PST, Thomas Gleixner <t...@linutronix.de> wrote: >On Wed, 19 Feb 2014, carl peng wrote: >> At last, the device will be connected to AMBA bus, so the interrupt >> pin will be connected to IOAPIC through AMBA bus. The device now >> is in the pre-silicon verification stage. >> >> So my question is the same: >> Why does APIC driver not implement the irq_set_type method? if > >Because we do not need it. All devices are properly connected and >configured by the BIOS and bus discovery. > >> implement it, will supply more free space for the device driver >> developer(they can set the interrupttrigger mode by calling >request_irq). > >There are 3 different mechanisms already to tell the kernel to >configure a particular irq line: ACPI, MP Tables and SFI. > >That's the way x86 does its interrupt configuration and there is no >need to provide another one. > >Thanks, > > tglx -- Sent from my mobile phone. Please pardon brevity and lack of formatting. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
