a/a/c/arm920t/at91/reset.c: drop obsolete CONFIG_AT91RM9200_USART

[karo-tx-uboot.git] / include / libfdt.h

diff --git a/include/libfdt.h b/include/libfdt.h
index ce374fded10454b59bfb90cf1f4f2292afd58c17..de82ed5ffdf7f4d98049fbe60f544de96a1f0f40 100644 (file)
--- a/include/libfdt.h
+++ b/include/libfdt.h
@@ -156,7 +156,7 @@ int fdt_next_node(const void *fdt, int offset, int *depth);
 #define __fdt_set_hdr(name) \
        static inline void fdt_set_##name(void *fdt, uint32_t val) \
        { \
-               struct fdt_header *fdth = fdt; \
+               struct fdt_header *fdth = (struct fdt_header*)fdt; \
                fdth->name = cpu_to_fdt32(val); \
        }
 __fdt_set_hdr(magic);
@@ -342,6 +342,75 @@ int fdt_path_offset(const void *fdt, const char *path);
  */
 const char *fdt_get_name(const void *fdt, int nodeoffset, int *lenp);
 
+/**
+ * fdt_first_property_offset - find the offset of a node's first property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of a node
+ *
+ * fdt_first_property_offset() finds the first property of the node at
+ * the given structure block offset.
+ *
+ * returns:
+ *     structure block offset of the property (>=0), on success
+ *     -FDT_ERR_NOTFOUND, if the requested node has no properties
+ *     -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_BEGIN_NODE tag
+ *      -FDT_ERR_BADMAGIC,
+ *     -FDT_ERR_BADVERSION,
+ *     -FDT_ERR_BADSTATE,
+ *     -FDT_ERR_BADSTRUCTURE,
+ *     -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_first_property_offset(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_next_property_offset - step through a node's properties
+ * @fdt: pointer to the device tree blob
+ * @offset: structure block offset of a property
+ *
+ * fdt_next_property_offset() finds the property immediately after the
+ * one at the given structure block offset.  This will be a property
+ * of the same node as the given property.
+ *
+ * returns:
+ *     structure block offset of the next property (>=0), on success
+ *     -FDT_ERR_NOTFOUND, if the given property is the last in its node
+ *     -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_PROP tag
+ *      -FDT_ERR_BADMAGIC,
+ *     -FDT_ERR_BADVERSION,
+ *     -FDT_ERR_BADSTATE,
+ *     -FDT_ERR_BADSTRUCTURE,
+ *     -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_next_property_offset(const void *fdt, int offset);
+
+/**
+ * fdt_get_property_by_offset - retrieve the property at a given offset
+ * @fdt: pointer to the device tree blob
+ * @offset: offset of the property to retrieve
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_get_property_by_offset() retrieves a pointer to the
+ * fdt_property structure within the device tree blob at the given
+ * offset.  If lenp is non-NULL, the length of the property value is
+ * also returned, in the integer pointed to by lenp.
+ *
+ * returns:
+ *     pointer to the structure representing the property
+ *             if lenp is non-NULL, *lenp contains the length of the property
+ *             value (>=0)
+ *     NULL, on error
+ *             if lenp is non-NULL, *lenp contains an error code (<0):
+ *             -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag
+ *             -FDT_ERR_BADMAGIC,
+ *             -FDT_ERR_BADVERSION,
+ *             -FDT_ERR_BADSTATE,
+ *             -FDT_ERR_BADSTRUCTURE,
+ *             -FDT_ERR_TRUNCATED, standard meanings
+ */
+const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
+                                                     int offset,
+                                                     int *lenp);
+
 /**
  * fdt_get_property_namelen - find a property based on substring
  * @fdt: pointer to the device tree blob
@@ -395,6 +464,40 @@ static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
                fdt_get_property(fdt, nodeoffset, name, lenp);
 }
 
+/**
+ * fdt_getprop_by_offset - retrieve the value of a property at a given offset
+ * @fdt: pointer to the device tree blob
+ * @ffset: offset of the property to read
+ * @namep: pointer to a string variable (will be overwritten) or NULL
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_getprop_by_offset() retrieves a pointer to the value of the
+ * property at structure block offset 'offset' (this will be a pointer
+ * to within the device blob itself, not a copy of the value).  If
+ * lenp is non-NULL, the length of the property value is also
+ * returned, in the integer pointed to by lenp.  If namep is non-NULL,
+ * the property's namne will also be returned in the char * pointed to
+ * by namep (this will be a pointer to within the device tree's string
+ * block, not a new copy of the name).
+ *
+ * returns:
+ *     pointer to the property's value
+ *             if lenp is non-NULL, *lenp contains the length of the property
+ *             value (>=0)
+ *             if namep is non-NULL *namep contiains a pointer to the property
+ *             name.
+ *     NULL, on error
+ *             if lenp is non-NULL, *lenp contains an error code (<0):
+ *             -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag
+ *             -FDT_ERR_BADMAGIC,
+ *             -FDT_ERR_BADVERSION,
+ *             -FDT_ERR_BADSTATE,
+ *             -FDT_ERR_BADSTRUCTURE,
+ *             -FDT_ERR_TRUNCATED, standard meanings
+ */
+const void *fdt_getprop_by_offset(const void *fdt, int offset,
+                                 const char **namep, int *lenp);
+
 /**
  * fdt_getprop_namelen - get property value based on substring
  * @fdt: pointer to the device tree blob