Commit b01eccea authored by Yash Shah's avatar Yash Shah Committed by Marc Zyngier
Browse files

genirq: Introduce irq_domain_translate_onecell 



Add a new function irq_domain_translate_onecell() that is to be used as
the translate function in struct irq_domain_ops.

Signed-off-by: default avatarYash Shah <yash.shah@sifive.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1575976274-13487-2-git-send-email-yash.shah@sifive.com
parent fd698849

include/linux/irqdomain.h

+5 −0
Original line number Diff line number Diff line
@@ -427,6 +427,11 @@ int irq_domain_translate_twocell(struct irq_domain *d, 
				 unsigned long *out_hwirq,

				 unsigned int *out_type);



int irq_domain_translate_onecell(struct irq_domain *d,

				 struct irq_fwspec *fwspec,

				 unsigned long *out_hwirq,

				 unsigned int *out_type);



/* IPI functions */

int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);

int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);

kernel/irq/irqdomain.c

+17 −0
Original line number Diff line number Diff line
@@ -986,6 +986,23 @@ const struct irq_domain_ops irq_domain_simple_ops = { 
};

EXPORT_SYMBOL_GPL(irq_domain_simple_ops);



/**

 * irq_domain_translate_onecell() - Generic translate for direct one cell

 * bindings

 */

int irq_domain_translate_onecell(struct irq_domain *d,

				 struct irq_fwspec *fwspec,

				 unsigned long *out_hwirq,

				 unsigned int *out_type)

{

	if (WARN_ON(fwspec->param_count < 1))

		return -EINVAL;

	*out_hwirq = fwspec->param[0];

	*out_type = IRQ_TYPE_NONE;

	return 0;

}

EXPORT_SYMBOL_GPL(irq_domain_translate_onecell);



/**

 * irq_domain_translate_twocell() - Generic translate for direct two cell

 * bindings

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