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 3cf7a01f5..55317fa9c 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -18,6 +18,7 @@ * driver. */ +#include <linux/device.h> #include <linux/errno.h> #include <linux/list.h> #include <linux/module.h> @@ -431,6 +432,7 @@ int of_irq_get_byname(struct device_node *dev, const char *name) return of_irq_get(dev, index); } +EXPORT_SYMBOL_GPL(of_irq_get_byname); /** * of_irq_count - Count the number of IRQs a node uses @@ -576,3 +578,23 @@ err: kfree(desc); } } + +/** + * of_msi_configure - Set the msi_domain field of a device + * @dev: device structure to associate with an MSI irq domain + * @np: device node for that device + */ +void of_msi_configure(struct device *dev, struct device_node *np) +{ + struct device_node *msi_np; + struct irq_domain *d; + + msi_np = of_parse_phandle(np, "msi-parent", 0); + if (!msi_np) + return; + + d = irq_find_matching_host(msi_np, DOMAIN_BUS_PLATFORM_MSI); + if (!d) + d = irq_find_host(msi_np); + dev_set_msi_domain(dev, d); +} |