fdt: Add new fdt_set_node_status & fdt_set_status_by_alias helpers
Add common function fdt_set_node_status() to assist in various locations
that we set a nodes status. This function utilizes the status values
that are part of the EPAPR spec (on power.org).
fdt_set_status_by_alias() is based on fdt_set_node_status() but uses an
alias string to identify the node to update.
We also add some shortcut functions to help the common cases of setting
"okay" and "disabled":
fdt_status_okay()
fdt_status_disabled()
fdt_status_okay_by_alias()
fdt_status_disabled_by_alias()
Finally, we fixup the corenet_ds ethernet code which previously had
a function by the same name that can be replaced with the new helpers.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Gerald Van Baren <vanbaren@cideas.com>
diff --git a/include/fdt_support.h b/include/fdt_support.h
index 4826eee..c7b4605 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -104,5 +104,33 @@
u64 addr);
u64 fdt_get_base_address(void *fdt, int node);
+enum fdt_status {
+ FDT_STATUS_OKAY,
+ FDT_STATUS_DISABLED,
+ FDT_STATUS_FAIL,
+ FDT_STATUS_FAIL_ERROR_CODE,
+};
+int fdt_set_node_status(void *fdt, int nodeoffset,
+ enum fdt_status status, unsigned int error_code);
+static inline int fdt_status_okay(void *fdt, int nodeoffset)
+{
+ return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
+}
+static inline int fdt_status_disabled(void *fdt, int nodeoffset)
+{
+ return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
+}
+
+int fdt_set_status_by_alias(void *fdt, const char* alias,
+ enum fdt_status status, unsigned int error_code);
+static inline int fdt_status_okay_by_alias(void *fdt, const char* alias)
+{
+ return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
+}
+static inline int fdt_status_disabled_by_alias(void *fdt, const char* alias)
+{
+ return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
+}
+
#endif /* ifdef CONFIG_OF_LIBFDT */
#endif /* ifndef __FDT_SUPPORT_H */
