Commit de575de8 authored by Marc Zyngier's avatar Marc Zyngier Committed by Thomas Gleixner
Browse files

irqchip/apple-aic: Add FW info retrieval support 



Plug the new .get_fwspec_info() callback into the Apple AIC driver, using
some of the existing FIQ affinity handling infrastructure.

Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Tested-by: default avatarWill Deacon <will@kernel.org>
Acked-by: default avatarSven Peter <sven@kernel.org>
Link: https://patch.msgid.link/20251020122944.3074811-7-maz@kernel.org
parent 68905ea6

drivers/irqchip/irq-apple-aic.c

+31 −3
Original line number Diff line number Diff line
@@ -651,6 +651,33 @@ static int aic_irq_domain_map(struct irq_domain *id, unsigned int irq, 
	return 0;

}



static int aic_irq_get_fwspec_info(struct irq_fwspec *fwspec, struct irq_fwspec_info *info)

{

	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_AFFINITY_VALID;



	return 0;

}



static int aic_irq_domain_translate(struct irq_domain *id,

				    struct irq_fwspec *fwspec,

				    unsigned long *hwirq,
@@ -753,6 +780,7 @@ 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_fwspec_info	= aic_irq_get_fwspec_info,

};



/*