diff options
Diffstat (limited to 'drivers/of/irq.c')
-rw-r--r-- | drivers/of/irq.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 5aeb894..3e06a69 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -406,6 +406,28 @@ int of_irq_get(struct device_node *dev, int index) } /** + * of_irq_get_byname - Decode a node's IRQ and return it as a Linux irq number + * @dev: pointer to device tree node + * @name: irq name + * + * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain + * is not yet created, or error code in case of any other failure. + */ +int of_irq_get_byname(struct device_node *dev, const char *name) +{ + int index; + + if (unlikely(!name)) + return -EINVAL; + + index = of_property_match_string(dev, "interrupt-names", name); + if (index < 0) + return index; + + return of_irq_get(dev, index); +} + +/** * of_irq_count - Count the number of IRQs a node uses * @dev: pointer to device tree node */ |