[PATCH 06/25] irqchip/apple-aic: Add FW info retrieval support
From: Marc Zyngier <maz@kernel.org>
Date: 2025-09-08 16:31:49
Also in:
linux-acpi, lkml
Subsystem:
arm/apple machine support, irqchip drivers, the rest · Maintainers:
Sven Peter, Janne Grunau, Thomas Gleixner, Linus Torvalds
Plug the new .get_info() callback into the Apple AIC driver, using some of the existing FIQ affinity handling infrastructure. Signed-off-by: Marc Zyngier <maz@kernel.org> --- drivers/irqchip/irq-apple-aic.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index 032d66dceb8ec..dd89e50a72e83 100644
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c@@ -651,6 +651,36 @@ static int aic_irq_domain_map(struct irq_domain *id, unsigned int irq, return 0; } +static int aic_irq_get_info(struct irq_fwspec_info *info) +{ + struct irq_fwspec *fwspec = &info->fwspec; + const struct cpumask *mask; + u32 intid; + + info->flags = 0; + info->affinity = NULL; + + if (fwspec->param[0] != AIC_FIQ) + return 0; + + if (fwspec->param_count == 3) + intid = fwspec->param[1]; + else + intid = fwspec->param[2]; + + if (aic_irqc->fiq_aff[intid]) + mask = &aic_irqc->fiq_aff[intid]->aff; + else + mask = cpu_possible_mask; + + info->affinity = mask; + + info->flags = (IRQ_FWSPEC_INFO_FWSPEC_VALID | + IRQ_FWSPEC_INFO_AFFINITY_VALID); + + return 0; +} + static int aic_irq_domain_translate(struct irq_domain *id, struct irq_fwspec *fwspec, unsigned long *hwirq,
@@ -753,6 +783,7 @@ static const struct irq_domain_ops aic_irq_domain_ops = { .translate = aic_irq_domain_translate, .alloc = aic_irq_domain_alloc, .free = aic_irq_domain_free, + .get_info = aic_irq_get_info, }; /*
--
2.39.2