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irqchip: gic: Add an entry point to set up irqchip flags

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A common use of gic_arch_extn is to set up additional flags
to the GIC irqchip. It looks like a benign enough hack that
doesn't really require the users of that feature to be converted
to stacked domains.

Add a gic_set_irqchip_flags() function that platform code can
call instead of using the dreaded gic_arch_extn.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1426088737-15817-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Marc Zyngier 2015-03-11 15:45:34 +00:00 committed by Jason Cooper
parent c517d838eb
commit 49869be2d9
2 changed files with 6 additions and 0 deletions
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5
drivers/irqchip/irq-gic.c
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@ -922,6 +922,11 @@ static const struct irq_domain_ops gic_default_routable_irq_domain_ops = {
const struct irq_domain_ops *gic_routable_irq_domain_ops =
&gic_default_routable_irq_domain_ops;
void gic_set_irqchip_flags(unsigned long flags)
{
gic_chip.flags |= flags;
}
void __init gic_init_bases(unsigned int gic_nr, int irq_start,
void __iomem *dist_base, void __iomem *cpu_base,
u32 percpu_offset, struct device_node *node)

1
include/linux/irqchip/arm-gic.h
View File

@ -97,6 +97,7 @@ struct device_node;
extern struct irq_chip gic_arch_extn;
void gic_set_irqchip_flags(unsigned long flags);
void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *,
u32 offset, struct device_node *);
void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);