diff options
Diffstat (limited to 'kernel/irq/irqdomain.c')
| -rw-r--r-- | kernel/irq/irqdomain.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 706724e..18edabe 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -502,6 +502,43 @@ unsigned int irq_create_of_mapping(struct device_node *controller, } EXPORT_SYMBOL_GPL(irq_create_of_mapping); +unsigned int irq_create_of_mapping_new(struct of_phandle_args *irq_data) +{ + struct irq_domain *domain; + irq_hw_number_t hwirq; + unsigned int type = IRQ_TYPE_NONE; + unsigned int virq; + + domain = irq_data->np ? + irq_find_host(irq_data->np) : irq_default_domain; + if (!domain) { + pr_warn("no irq domain found for %s !\n", + of_node_full_name(irq_data->np)); + return 0; + } + + /* If domain has no translation, then we assume interrupt line */ + if (domain->ops->xlate == NULL) + hwirq = irq_data->args[0]; + else { + if (domain->ops->xlate(domain, irq_data->np, irq_data->args, + irq_data->args_count, &hwirq, &type)) + return 0; + } + + /* Create mapping */ + virq = irq_create_mapping(domain, hwirq); + if (!virq) + return virq; + + /* Set type if specified and different than the current one */ + if (type != IRQ_TYPE_NONE && + type != irq_get_trigger_type(virq)) + irq_set_irq_type(virq, type); + return virq; +} +EXPORT_SYMBOL_GPL(irq_create_of_mapping_new); + /** * irq_dispose_mapping() - Unmap an interrupt * @virq: linux irq number of the interrupt to unmap |