Add fdt_get_unit() function.

Obtained from:	Semihalf

2 files changed, 12 insertions, 0 deletions

diff --git a/sys/dev/fdt/fdt_common.c b/sys/dev/fdt/fdt_common.c
index cc55c65..706396b 100644
--- a/sys/dev/fdt/fdt_common.c
+++ b/sys/dev/fdt/fdt_common.c
@@ -697,3 +697,14 @@ fdt_get_mem_regions(struct mem_region *mr, int *mrcnt, uint32_t *memsize)
 out:
 	return (rv);
 }
+
+int
+fdt_get_unit(device_t dev)
+{
+	const char * name;
+
+	name = ofw_bus_get_name(dev);
+	name = strchr(name, '@') + 1;
+
+	return (strtol(name,NULL,0));
+}
diff --git a/sys/dev/fdt/fdt_common.h b/sys/dev/fdt/fdt_common.h
index 4dea494..4761cd7 100644
--- a/sys/dev/fdt/fdt_common.h
+++ b/sys/dev/fdt/fdt_common.h
@@ -110,5 +110,6 @@ int fdt_pci_route_intr(int, int, int, int, struct fdt_pci_intr *, int *);
 int fdt_ranges_verify(pcell_t *, int, int, int, int);
 int fdt_reg_to_rl(phandle_t, struct resource_list *);
 int fdt_pm(phandle_t);
+int fdt_get_unit(device_t);
 
 #endif /* _FDT_COMMON_H_ */