From a3e31b4588443f37d82195096c6b30dff1c152c2 Mon Sep 17 00:00:00 2001 From: Sudeep KarkadaNagesha Date: Wed, 18 Sep 2013 11:53:05 +0100 Subject: of: Move definition of of_find_next_cache_node into common code. Since the definition of_find_next_cache_node is architecture independent, the existing definition in powerpc can be moved to driver/of/base.c Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rob Herring Signed-off-by: Sudeep KarkadaNagesha Signed-off-by: Benjamin Herrenschmidt --- drivers/of/base.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'drivers/of') diff --git a/drivers/of/base.c b/drivers/of/base.c index 865d3f66c86..b2cee3db5ce 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1884,3 +1884,34 @@ int of_device_is_stdout_path(struct device_node *dn) return of_stdout == dn; } EXPORT_SYMBOL_GPL(of_device_is_stdout_path); + +/** + * of_find_next_cache_node - Find a node's subsidiary cache + * @np: node of type "cpu" or "cache" + * + * Returns a node pointer with refcount incremented, use + * of_node_put() on it when done. Caller should hold a reference + * to np. + */ +struct device_node *of_find_next_cache_node(const struct device_node *np) +{ + struct device_node *child; + const phandle *handle; + + handle = of_get_property(np, "l2-cache", NULL); + if (!handle) + handle = of_get_property(np, "next-level-cache", NULL); + + if (handle) + return of_find_node_by_phandle(be32_to_cpup(handle)); + + /* OF on pmac has nodes instead of properties named "l2-cache" + * beneath CPU nodes. + */ + if (!strcmp(np->type, "cpu")) + for_each_child_of_node(np, child) + if (!strcmp(child->type, "cache")) + return child; + + return NULL; +} -- cgit v1.2.3