On Monday, February 08, 2016 10:48:33 AM Timur Tabi wrote:
> Is there support for the platform_get_irq_byname() function on ACPI systems?
>
> I'm working on adding ACPI support for a driver that currently only
> supports device tree. This driver has code like this:
>
> ret = platform_get_irq_byname(pdev, "core0_irq");
>
> This function works fine on device tree, but it fails on our ACPI system
> because our ACPI nodes don't appear to have any way to attach a name to
> an IRQ resource:
That's correct.
>
> Method (_CRS, 0x0, Serialized) {
> Name (RBUF, ResourceTemplate() {
> [snip]
> Interrupt (ResourceConsumer, Level, ActiveHigh,
> Exclusive, , , )
> {0x120, 0x121, 0x122, 0x123}
> })
> Return (RBUF)
> }
>
> I would hate to have to do something like this:
>
> ret = platform_get_irq_byname(pdev, "core0_irq");
> if (ret)
> /* ACPI doesn't support named resources */
> ret = platform_get_irq(pdev, 0);
That's the only way ATM, though.
In theory _DSD might be used to provide a name for the IRQ resource, but
that hasn't been explored yet (and there's no support in the code, of
course).
Thanks,
Rafael
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