diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/irqdomain.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 9c88db7056d4..7fac311057b8 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -742,6 +742,42 @@ static int irq_domain_alloc_descs(int virq, unsigned int cnt, } #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY +/** + * irq_domain_add_hierarchy - Add a irqdomain into the hierarchy + * @parent: Parent irq domain to associate with the new domain + * @flags: Irq domain flags associated to the domain + * @size: Size of the domain. See below + * @node: Optional device-tree node of the interrupt controller + * @ops: Pointer to the interrupt domain callbacks + * @host_data: Controller private data pointer + * + * If @size is 0 a tree domain is created, otherwise a linear domain. + * + * If successful the parent is associated to the new domain and the + * domain flags are set. + * Returns pointer to IRQ domain, or NULL on failure. + */ +struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, + unsigned int flags, + unsigned int size, + struct device_node *node, + const struct irq_domain_ops *ops, + void *host_data) +{ + struct irq_domain *domain; + + if (size) + domain = irq_domain_add_linear(node, size, ops, host_data); + else + domain = irq_domain_add_tree(node, ops, host_data); + if (domain) { + domain->parent = parent; + domain->flags |= flags; + } + + return domain; +} + static void irq_domain_insert_irq(int virq) { struct irq_data *data; |