regmap: Allow users to query the size of register values
[linux-2.6.git] / drivers / base / regmap / regmap.c
index 67311c2..e5ae786 100644 (file)
@@ -927,6 +927,21 @@ out:
 }
 EXPORT_SYMBOL_GPL(regmap_register_patch);
 
+/**
+ * regmap_get_val_bytes(): Report the size of a register value
+ *
+ * Report the size of a register value, mainly intended to for use by
+ * generic infrastructure built on top of regmap.
+ */
+int regmap_get_val_bytes(struct regmap *map)
+{
+       if (map->format.format_write)
+               return -EINVAL;
+
+       return map->format.val_bytes;
+}
+EXPORT_SYMBOL_GPL(regmap_get_val_bytes);
+
 static int __init regmap_initcall(void)
 {
        regmap_debugfs_initcall();