@@ -461,6 +461,72 @@ struct device_node *__of_node_dup(const struct device_node *np,
return NULL;
}
+/**
+ * of_create_node - Dynamically create a device node
+ *
+ * @parent: Pointer to parent device node
+ * @full_name: Node full name
+ * @cset: Pointer to returning changeset
+ *
+ * Return: Pointer to the created device node or NULL in case of an error.
+ */
+struct device_node *of_create_node(struct device_node *parent,
+ const char *full_name,
+ struct of_changeset **cset)
+{
+ struct of_changeset *ocs;
+ struct device_node *np;
+ int ret;
+
+ np = __of_node_dup(NULL, full_name);
+ if (!np)
+ return NULL;
+ np->parent = parent;
+
+ if (!cset)
+ return np;
+
+ ocs = kmalloc(sizeof(*cset), GFP_KERNEL);
+ if (!ocs) {
+ of_node_put(np);
+ return NULL;
+ }
+
+ of_changeset_init(ocs);
+ ret = of_changeset_attach_node(ocs, np);
+ if (ret) {
+ of_changeset_destroy(ocs);
+ of_node_put(np);
+ kfree(ocs);
+ return NULL;
+ }
+
+ np->data = ocs;
+ *cset = ocs;
+
+ return np;
+}
+EXPORT_SYMBOL(of_create_node);
+
+/**
+ * of_destroy_node - Destroy a dynamically created device node
+ *
+ * @np: Pointer to dynamically created device node
+ *
+ */
+void of_destroy_node(struct device_node *np)
+{
+ struct of_changeset *ocs;
+
+ if (np->data) {
+ ocs = (struct of_changeset *)np->data;
+ of_changeset_destroy(ocs);
+ kfree(ocs);
+ }
+ of_node_put(np);
+}
+EXPORT_SYMBOL(of_destroy_node);
+
static void __of_changeset_entry_destroy(struct of_changeset_entry *ce)
{
if (ce->action == OF_RECONFIG_ATTACH_NODE &&
@@ -934,3 +1000,124 @@ int of_changeset_action(struct of_changeset *ocs, unsigned long action,
return 0;
}
EXPORT_SYMBOL_GPL(of_changeset_action);
+
+static int of_changeset_add_prop_helper(struct of_changeset *ocs,
+ struct device_node *np,
+ const struct property *pp)
+{
+ struct property *new_pp;
+ int ret;
+
+ new_pp = __of_prop_dup(pp, GFP_KERNEL);
+ if (!new_pp)
+ return -ENOMEM;
+
+ ret = of_changeset_add_property(ocs, np, new_pp);
+ if (ret) {
+ kfree(new_pp->name);
+ kfree(new_pp->value);
+ kfree(new_pp);
+ }
+
+ return ret;
+}
+
+/**
+ * of_changeset_add_prop_string - Add a string property to a changeset
+ *
+ * @ocs: changeset pointer
+ * @np: device node pointer
+ * @prop_name: name of the property to be added
+ * @str: pointer to null terminated string
+ *
+ * Create a string property and add it to a changeset.
+ *
+ * Return: 0 on success, a negative error value in case of an error.
+ */
+int of_changeset_add_prop_string(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name, const char *str)
+{
+ struct property prop;
+
+ prop.name = (char *)prop_name;
+ prop.length = strlen(str) + 1;
+ prop.value = (void *)str;
+
+ return of_changeset_add_prop_helper(ocs, np, &prop);
+}
+EXPORT_SYMBOL_GPL(of_changeset_add_prop_string);
+
+/**
+ * of_changeset_add_prop_string_array - Add a string list property to
+ * a changeset
+ *
+ * @ocs: changeset pointer
+ * @np: device node pointer
+ * @prop_name: name of the property to be added
+ * @str_array: pointer to an array of null terminated strings
+ * @sz: number of string array elements
+ *
+ * Create a string list property and add it to a changeset.
+ *
+ * Return: 0 on success, a negative error value in case of an error.
+ */
+int of_changeset_add_prop_string_array(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name,
+ const char **str_array, size_t sz)
+{
+ struct property prop;
+ int i, ret;
+ char *vp;
+
+ prop.name = (char *)prop_name;
+
+ prop.length = 0;
+ for (i = 0; i < sz; i++)
+ prop.length += strlen(str_array[i]) + 1;
+
+ prop.value = kmalloc(prop.length, GFP_KERNEL);
+ if (!prop.value)
+ return -ENOMEM;
+
+ vp = prop.value;
+ for (i = 0; i < sz; i++) {
+ vp += snprintf(vp, (char *)prop.value + prop.length - vp, "%s",
+ str_array[i]) + 1;
+ }
+ ret = of_changeset_add_prop_helper(ocs, np, &prop);
+ kfree(prop.value);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(of_changeset_add_prop_string_array);
+
+/**
+ * of_changeset_add_prop_u32_array - Add a property of 32 bit integers
+ * property to a changeset
+ *
+ * @ocs: changeset pointer
+ * @np: device node pointer
+ * @prop_name: name of the property to be added
+ * @array: pointer to an array of 32 bit integers
+ * @sz: number of array elements
+ *
+ * Create a property of 32 bit integers and add it to a changeset.
+ *
+ * Return: 0 on success, a negative error value in case of an error.
+ */
+int of_changeset_add_prop_u32_array(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name,
+ const u32 *array, size_t sz)
+{
+ struct property prop;
+
+ prop.name = (char *)prop_name;
+ prop.length = sizeof(u32) * sz;
+ prop.value = (void *)array;
+
+ return of_changeset_add_prop_helper(ocs, np, &prop);
+}
+EXPORT_SYMBOL_GPL(of_changeset_add_prop_u32_array);
@@ -1505,6 +1505,30 @@ static inline int of_changeset_update_property(struct of_changeset *ocs,
{
return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop);
}
+
+struct device_node *of_create_node(struct device_node *parent,
+ const char *full_name,
+ struct of_changeset **cset);
+void of_destroy_node(struct device_node *np);
+int of_changeset_add_prop_string(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name, const char *str);
+int of_changeset_add_prop_string_array(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name,
+ const char **str_array, size_t sz);
+int of_changeset_add_prop_u32_array(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name,
+ const u32 *array, size_t sz);
+static inline int of_changeset_add_prop_u32(struct of_changeset *ocs,
+ struct device_node *np,
+ const char *prop_name,
+ const u32 val)
+{
+ return of_changeset_add_prop_u32_array(ocs, np, prop_name, &val, 1);
+}
+
#else /* CONFIG_OF_DYNAMIC */
static inline int of_reconfig_notifier_register(struct notifier_block *nb)
{