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authorSimon Glass <sjg@chromium.org>2017-05-18 20:09:27 -0600
committerSimon Glass <sjg@chromium.org>2017-06-01 07:03:12 -0600
commita4b8e372d5b15d7dd302cac667e87049b59b13c7 (patch)
treea806a79b586f5489a48a8ba01c41f9e0140f8fd3 /include/dm/of.h
parenteed36609b5494b94bdca0e2bdc5ac2bd07ab2518 (diff)
dm: Add more livetree helpers and definitions
Add some definitions and helpers for livetree in the main of.h header file. These include: - reading multi-cell integers - default number of address/size cells - functions for comparing names Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm/of.h')
-rw-r--r--include/dm/of.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/dm/of.h b/include/dm/of.h
index 6b5afab1c1..d4d941e75c 100644
--- a/include/dm/of.h
+++ b/include/dm/of.h
@@ -103,4 +103,40 @@ static inline bool of_live_active(void)
}
#endif
+#define OF_BAD_ADDR ((u64)-1)
+
+static inline const char *of_node_full_name(const struct device_node *np)
+{
+ return np ? np->full_name : "<no-node>";
+}
+
+/* Default #address and #size cells */
+#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
+#endif
+
+/* Default string compare functions */
+#if !defined(of_compat_cmp)
+#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2))
+#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
+#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
+#endif
+
+/* Helper to read a big number; size is in cells (not bytes) */
+static inline u64 of_read_number(const __be32 *cell, int size)
+{
+ u64 r = 0;
+ while (size--)
+ r = (r << 32) | be32_to_cpu(*(cell++));
+ return r;
+}
+
+/* Like of_read_number, but we want an unsigned long result */
+static inline unsigned long of_read_ulong(const __be32 *cell, int size)
+{
+ /* toss away upper bits if unsigned long is smaller than u64 */
+ return of_read_number(cell, size);
+}
+
#endif