int fdt_next_node(const void *fdt, int offset, int *depth);
+/**
+ * fdt_first_subnode() - get offset of first direct subnode
+ *
+ * @fdt: FDT blob
+ * @offset: Offset of node to check
+ * @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+int fdt_first_subnode(const void *fdt, int offset);
+
+/**
+ * fdt_next_subnode() - get offset of next direct subnode
+ *
+ * After first calling fdt_first_subnode(), call this function repeatedly to
+ * get direct subnodes of a parent node.
+ *
+ * @fdt: FDT blob
+ * @offset: Offset of previous subnode
+ * @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more
+ * subnodes
+ */
+int fdt_next_subnode(const void *fdt, int offset);
+
/**********************************************************************/
/* General functions */
/**********************************************************************/
* value of the property named 'name' in the node /aliases.
*
* returns:
- * a pointer to the expansion of the alias named 'name', of it exists
+ * a pointer to the expansion of the alias named 'name', if it exists
* NULL, if the given alias or the /aliases node does not exist
*/
const char *fdt_get_alias(const void *fdt, const char *name);
int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
const char *compatible);
+/**
+ * fdt_stringlist_contains - check a string list property for a string
+ * @strlist: Property containing a list of strings to check
+ * @listlen: Length of property
+ * @str: String to search for
+ *
+ * This is a utility function provided for convenience. The list contains
+ * one or more strings, each terminated by \0, as is found in a device tree
+ * "compatible" property.
+ *
+ * @return: 1 if the string is found in the list, 0 not found, or invalid list
+ */
+int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
+
/**********************************************************************/
/* Write-in-place functions */
/**********************************************************************/
static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
const char *name, uint32_t val)
{
- val = cpu_to_fdt32(val);
- return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
}
/**
static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
const char *name, uint64_t val)
{
- val = cpu_to_fdt64(val);
- return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
}
/**
int fdt_property(void *fdt, const char *name, const void *val, int len);
static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
{
- val = cpu_to_fdt32(val);
- return fdt_property(fdt, name, &val, sizeof(val));
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_property(fdt, name, &tmp, sizeof(tmp));
}
static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
{
- val = cpu_to_fdt64(val);
- return fdt_property(fdt, name, &val, sizeof(val));
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_property(fdt, name, &tmp, sizeof(tmp));
}
static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
{
static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
uint32_t val)
{
- val = cpu_to_fdt32(val);
- return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
}
/**
static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
uint64_t val)
{
- val = cpu_to_fdt64(val);
- return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
}
/**
static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
const char *name, uint32_t val)
{
- val = cpu_to_fdt32(val);
- return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
}
/**
static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
const char *name, uint64_t val)
{
- val = cpu_to_fdt64(val);
- return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
}
/**