On Wed, May 29, 2019 at 4:53 PM Thierry Reding <thierry.reding@xxxxxxxxx> wrote: > From: Thierry Reding <treding@xxxxxxxxxx> > > Hierarchical IRQ domains can be used to stack different IRQ controllers > on top of each other. One specific use-case where this can be useful is > if a power management controller has top-level controls for wakeup > interrupts. In such cases, the power management controller can be a > parent to other interrupt controllers and program additional registers > when an IRQ has its wake capability enabled or disabled. > > Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> > --- > Changes in v3: > - use irq_create_fwspec_mapping() instead of irq_domain_alloc_irqs() > - add missing kerneldoc for new parent_domain field > - keep IRQ_DOMAIN dependency for clarity Actually I applied the patch, and dropped the two lines making it possible to override .to_irq() for now, so I can illustrate my idea on top. If I manage. Yours, Linus Walleij
