diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2011-06-14 11:16:14 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-06-20 23:55:09 -0600 |
| commit | 987d2da6af396f1b54b13e5bc92481579c954101 (patch) | |
| tree | e54fe7e33b911b45fd205a0b16218c86bd2e3214 /include | |
| parent | 166fbb0d3b2fd477f00b412dc4b905d7319cef43 (diff) | |
dt/irq: add irq_domain_generate_simple() helper
irq_domain_generate_simple() is an easy way to generate an irq translation
domain for simple irq controllers. It assumes a flat 1:1 mapping from
hardware irq number to an offset of the first linux irq number assigned
to the controller
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/irq.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index a103c011815..3e5c35f2750 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -797,6 +797,17 @@ extern unsigned int irq_domain_map(struct irq_domain *domain, irq_hw_number_t hwirq); extern void irq_domain_unmap(struct irq_domain *domain, irq_hw_number_t hw); +struct of_device_id; +#ifdef CONFIG_OF +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); +#else +static inline void irq_domain_generate_simple(const struct of_device_id *match, + u64 phys_base, unsigned int irq_start) { } +#endif + + #endif /* !CONFIG_S390 */ #endif /* _LINUX_IRQ_H */ |