diff options
Diffstat (limited to 'include/linux/irqdomain.h')
| -rw-r--r-- | include/linux/irqdomain.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 3ad553e8eae..bd4272b61a1 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -47,6 +47,7 @@ struct irq_domain_ops { * of the irq_domain is responsible for allocating the array of * irq_desc structures. * @nr_irq: Number of irqs managed by the irq domain + * @hwirq_base: Starting number for hwirqs managed by the irq domain * @ops: pointer to irq_domain methods * @priv: private data pointer for use by owner. Not touched by irq_domain * core code. @@ -57,6 +58,7 @@ struct irq_domain { struct list_head list; unsigned int irq_base; unsigned int nr_irq; + unsigned int hwirq_base; const struct irq_domain_ops *ops; void *priv; struct device_node *of_node; @@ -72,15 +74,28 @@ struct irq_domain { static inline unsigned int irq_domain_to_irq(struct irq_domain *d, unsigned long hwirq) { - return d->ops->to_irq ? d->ops->to_irq(d, hwirq) : d->irq_base + hwirq; + if (d->ops->to_irq) + return d->ops->to_irq(d, hwirq); + if (WARN_ON(hwirq < d->hwirq_base)) + return 0; + return d->irq_base + hwirq - d->hwirq_base; } +#define irq_domain_for_each_hwirq(d, hw) \ + for (hw = d->hwirq_base; hw < d->hwirq_base + d->nr_irq; hw++) + +#define irq_domain_for_each_irq(d, hw, irq) \ + for (hw = d->hwirq_base, irq = irq_domain_to_irq(d, hw); \ + hw < d->hwirq_base + d->nr_irq; \ + hw++, irq = irq_domain_to_irq(d, hw)) + extern void irq_domain_add(struct irq_domain *domain); extern void irq_domain_del(struct irq_domain *domain); + +extern struct irq_domain_ops irq_domain_simple_ops; #endif /* CONFIG_IRQ_DOMAIN */ #if defined(CONFIG_IRQ_DOMAIN) && defined(CONFIG_OF_IRQ) -extern struct irq_domain_ops irq_domain_simple_ops; extern void irq_domain_add_simple(struct device_node *controller, int irq_base); extern void irq_domain_generate_simple(const struct of_device_id *match, u64 phys_base, unsigned int irq_start); |