[RFCv2 PATCH 1/8] irqdomain: Introduce irq_domain_ops.init_alloc_info

[Thomas Gleixner]

On Mon, 13 Jul 2015, Suravee Suthikulpanit wrote:

> Currently, when calling irq_domain_alloc_irqs() on ARM64, it uses
> struct of_phandle_args to pass irq information. However, this is not
> appropriate for ACPI since of_phandle_args is specific to DT.
> 
> Therefore, this patch introduces a new function pointer,
> irq_domain_ops.init_alloc_info, which can be used by irqchips to provide
> a way to initialize irqchip-specific data-structure for allocating IRQ.
> 
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit at amd.com>
> ---
> NOTE:
> Similarly, x86 is currently using struct irq_alloc_info
> (see arch/x86/include/asm/hw_irq.h) and each irq_domain has different
> way of initializing this structure.

And why don't you use the same mechanism on ARM and have a private
irq_alloc_info implementation which can carry either DT or ACPI
information?
 
Thanks,

	tglx