Re: [PATCH RESEND v1 2/5] drivers: pinctrl: msm: enable PDC interrupt only during suspend

[Stephen Boyd]

Quoting Lina Iyer (2018-09-04 14:09:34)
> On Mon, Aug 27 2018 at 14:01 -0600, Stephen Boyd wrote:
> >
> >Can't we just configure a different chained IRQ handler with
> >irq_set_chained_handler_and_data() for each of the GPIO IRQs that are
> >handled by PDC to be the interrupts provide by the PDC irq controller
> >that match the GPIOs? And then set their parent irq with
> >irq_set_parent() for completeness? And also move those GPIOs from the
> >existing msm_gpio irqchip to a different PDC gpio irqchip that does
> >nothing besides push irqchip calls up to the PDC irqchip? Then we don't
> >even have to think about resending anything and we can rely on PDC to do
> >all the interrupt sensing all the time but still provide the irqs from
> >the GPIO controller.
> >
> Seems like the irqchips need to be in hierarchy for this to work, which
> is not the case with TLMM and the PDC, currently.
> 

Why? Does something mandate that the chained irq is also the
hierarchical parent irqchip?