Merge git://git.infradead.org/embedded-2.6

[karo-tx-linux.git] / arch / powerpc / boot / devtree.c

diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c
index 60f561e307a99090b423bc3e02e90891e9d51b48..5d12336dc3609d9d0cb9df0089f273ffc7fabe77 100644 (file)
--- a/arch/powerpc/boot/devtree.c
+++ b/arch/powerpc/boot/devtree.c
@@ -350,3 +350,23 @@ int dt_is_compatible(void *node, const char *compat)
 
        return 0;
 }
+
+int dt_get_virtual_reg(void *node, void **addr, int nres)
+{
+       unsigned long xaddr;
+       int n;
+
+       n = getprop(node, "virtual-reg", addr, nres * 4);
+       if (n > 0)
+               return n / 4;
+
+       for (n = 0; n < nres; n++) {
+               if (!dt_xlate_reg(node, n, &xaddr, NULL))
+                       break;
+
+               addr[n] = (void *)xaddr;
+       }
+
+       return n;
+}
+