Lines Matching +full:child +full:- +full:nodes
1 // SPDX-License-Identifier: GPL-2.0
3 * Software nodes for the firmware node framework.
38 return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &software_node_ops; in is_software_node()
60 spin_lock(&swnode_kset->list_lock); in software_node_to_swnode()
62 list_for_each_entry(k, &swnode_kset->list, entry) { in software_node_to_swnode()
64 if (swnode->node == node) in software_node_to_swnode()
69 spin_unlock(&swnode_kset->list_lock); in software_node_to_swnode()
78 return swnode ? swnode->node : NULL; in to_software_node()
86 return swnode ? &swnode->fwnode : NULL; in software_node_fwnode()
90 /* -------------------------------------------------------------------------- */
99 for (; prop->name; prop++) in property_entry_get()
100 if (!strcmp(name, prop->name)) in property_entry_get()
108 if (!prop->length) in property_get_pointer()
111 return prop->is_inline ? &prop->value : prop->pointer; in property_get_pointer()
122 return ERR_PTR(-EINVAL); in property_entry_find()
125 return ERR_PTR(-ENODATA); in property_entry_find()
126 if (length > prop->length) in property_entry_find()
127 return ERR_PTR(-EOVERFLOW); in property_entry_find()
139 return -EINVAL; in property_entry_count_elems_of_size()
141 return prop->length / length; in property_entry_count_elems_of_size()
157 return -ENXIO; in property_entry_read_int_array()
204 if (p->type == DEV_PROP_STRING) { in property_entry_free_data()
206 nval = p->length / sizeof(*src_str); in property_entry_free_data()
211 if (!p->is_inline) in property_entry_free_data()
212 kfree(p->pointer); in property_entry_free_data()
214 kfree(p->name); in property_entry_free_data()
226 while (--i >= 0) in property_copy_string_array()
246 if (!src->is_inline && !src->length) in property_entry_copy_data()
247 return -ENODATA; in property_entry_copy_data()
253 if (src->type == DEV_PROP_REF && src->is_inline) in property_entry_copy_data()
254 return -EINVAL; in property_entry_copy_data()
256 if (src->length <= sizeof(dst->value)) { in property_entry_copy_data()
257 dst_ptr = &dst->value; in property_entry_copy_data()
258 dst->is_inline = true; in property_entry_copy_data()
260 dst_ptr = kmalloc(src->length, GFP_KERNEL); in property_entry_copy_data()
262 return -ENOMEM; in property_entry_copy_data()
263 dst->pointer = dst_ptr; in property_entry_copy_data()
266 if (src->type == DEV_PROP_STRING) { in property_entry_copy_data()
267 nval = src->length / sizeof(const char *); in property_entry_copy_data()
269 if (!dst->is_inline) in property_entry_copy_data()
270 kfree(dst->pointer); in property_entry_copy_data()
271 return -ENOMEM; in property_entry_copy_data()
274 memcpy(dst_ptr, pointer, src->length); in property_entry_copy_data()
277 dst->length = src->length; in property_entry_copy_data()
278 dst->type = src->type; in property_entry_copy_data()
279 dst->name = kstrdup(src->name, GFP_KERNEL); in property_entry_copy_data()
280 if (!dst->name) { in property_entry_copy_data()
282 return -ENOMEM; in property_entry_copy_data()
289 * property_entries_dup - duplicate array of properties
292 * This function creates a deep copy of the given NULL-terminated array
310 return ERR_PTR(-ENOMEM); in property_entries_dup()
315 while (--i >= 0) in property_entries_dup()
327 * property_entries_free - free previously allocated array of properties
330 * This function frees given NULL-terminated array of property entries,
340 for (p = properties; p->name; p++) in property_entries_free()
347 /* -------------------------------------------------------------------------- */
354 kobject_get(&swnode->kobj); in software_node_get()
356 return &swnode->fwnode; in software_node_get()
363 kobject_put(&swnode->kobj); in software_node_put()
371 return !!property_entry_get(swnode->node->properties, propname); in software_node_property_present()
381 return property_entry_read_int_array(swnode->node->properties, propname, in software_node_read_int_array()
391 return property_entry_read_string_array(swnode->node->properties, in software_node_read_string_array()
403 return kobject_name(&swnode->kobj); in software_node_get_name()
432 if (!swnode || !swnode->parent) in software_node_get_parent()
435 return fwnode_handle_get(&swnode->parent->fwnode); in software_node_get_parent()
440 struct fwnode_handle *child) in software_node_get_next_child() argument
443 struct swnode *c = to_swnode(child); in software_node_get_next_child()
445 if (!p || list_empty(&p->children) || in software_node_get_next_child()
446 (c && list_is_last(&c->entry, &p->children))) { in software_node_get_next_child()
447 fwnode_handle_put(child); in software_node_get_next_child()
454 c = list_first_entry(&p->children, struct swnode, entry); in software_node_get_next_child()
456 fwnode_handle_put(child); in software_node_get_next_child()
457 return fwnode_handle_get(&c->fwnode); in software_node_get_next_child()
465 struct swnode *child; in software_node_get_named_child_node() local
467 if (!swnode || list_empty(&swnode->children)) in software_node_get_named_child_node()
470 list_for_each_entry(child, &swnode->children, entry) { in software_node_get_named_child_node()
471 if (!strcmp(childname, kobject_name(&child->kobj))) { in software_node_get_named_child_node()
472 kobject_get(&child->kobj); in software_node_get_named_child_node()
473 return &child->fwnode; in software_node_get_named_child_node()
495 return -ENOENT; in software_node_get_reference_args()
497 prop = property_entry_get(swnode->node->properties, propname); in software_node_get_reference_args()
499 return -ENOENT; in software_node_get_reference_args()
501 if (prop->type != DEV_PROP_REF) in software_node_get_reference_args()
502 return -EINVAL; in software_node_get_reference_args()
508 if (prop->is_inline) in software_node_get_reference_args()
509 return -EINVAL; in software_node_get_reference_args()
511 if (index * sizeof(*ref) >= prop->length) in software_node_get_reference_args()
512 return -ENOENT; in software_node_get_reference_args()
514 ref_array = prop->pointer; in software_node_get_reference_args()
517 refnode = software_node_fwnode(ref->node); in software_node_get_reference_args()
519 return -ENOENT; in software_node_get_reference_args()
522 error = property_entry_read_int_array(ref->node->properties, in software_node_get_reference_args()
532 return -EINVAL; in software_node_get_reference_args()
537 args->fwnode = software_node_get(refnode); in software_node_get_reference_args()
538 args->nargs = nargs; in software_node_get_reference_args()
541 args->args[i] = ref->args[i]; in software_node_get_reference_args()
560 /* -------------------------------------------------------------------------- */
563 * software_node_find_by_name - Find software node by name
567 * The function will find a node that is child of @parent and that is named
581 spin_lock(&swnode_kset->list_lock); in software_node_find_by_name()
583 list_for_each_entry(k, &swnode_kset->list, entry) { in software_node_find_by_name()
585 if (parent == swnode->node->parent && swnode->node->name && in software_node_find_by_name()
586 !strcmp(name, swnode->node->name)) { in software_node_find_by_name()
587 kobject_get(&swnode->kobj); in software_node_find_by_name()
593 spin_unlock(&swnode_kset->list_lock); in software_node_find_by_name()
595 return swnode ? swnode->node : NULL; in software_node_find_by_name()
609 node->properties = props; in software_node_register_properties()
618 if (swnode->parent) { in software_node_release()
619 ida_simple_remove(&swnode->parent->child_ids, swnode->id); in software_node_release()
620 list_del(&swnode->entry); in software_node_release()
622 ida_simple_remove(&swnode_root_ids, swnode->id); in software_node_release()
625 if (swnode->allocated) { in software_node_release()
626 property_entries_free(swnode->node->properties); in software_node_release()
627 kfree(swnode->node); in software_node_release()
629 ida_destroy(&swnode->child_ids); in software_node_release()
647 ret = -ENOMEM; in swnode_register()
651 ret = ida_simple_get(parent ? &parent->child_ids : &swnode_root_ids, in swnode_register()
658 swnode->id = ret; in swnode_register()
659 swnode->node = node; in swnode_register()
660 swnode->parent = parent; in swnode_register()
661 swnode->allocated = allocated; in swnode_register()
662 swnode->kobj.kset = swnode_kset; in swnode_register()
663 swnode->fwnode.ops = &software_node_ops; in swnode_register()
665 ida_init(&swnode->child_ids); in swnode_register()
666 INIT_LIST_HEAD(&swnode->entry); in swnode_register()
667 INIT_LIST_HEAD(&swnode->children); in swnode_register()
669 if (node->name) in swnode_register()
670 ret = kobject_init_and_add(&swnode->kobj, &software_node_type, in swnode_register()
671 parent ? &parent->kobj : NULL, in swnode_register()
672 "%s", node->name); in swnode_register()
674 ret = kobject_init_and_add(&swnode->kobj, &software_node_type, in swnode_register()
675 parent ? &parent->kobj : NULL, in swnode_register()
676 "node%d", swnode->id); in swnode_register()
678 kobject_put(&swnode->kobj); in swnode_register()
683 list_add_tail(&swnode->entry, &parent->children); in swnode_register()
685 kobject_uevent(&swnode->kobj, KOBJ_ADD); in swnode_register()
686 return &swnode->fwnode; in swnode_register()
690 property_entries_free(node->properties); in swnode_register()
695 * software_node_register_nodes - Register an array of software nodes
696 * @nodes: Zero terminated array of software nodes to be registered
698 * Register multiple software nodes at once.
700 int software_node_register_nodes(const struct software_node *nodes) in software_node_register_nodes() argument
705 for (i = 0; nodes[i].name; i++) { in software_node_register_nodes()
706 ret = software_node_register(&nodes[i]); in software_node_register_nodes()
708 software_node_unregister_nodes(nodes); in software_node_register_nodes()
718 * software_node_unregister_nodes - Unregister an array of software nodes
719 * @nodes: Zero terminated array of software nodes to be unregistered
721 * Unregister multiple software nodes at once.
723 * NOTE: Be careful using this call if the nodes had parent pointers set up in
724 * them before registering. If so, it is wiser to remove the nodes
725 * individually, in the correct order (child before parent) instead of relying
726 * on the sequential order of the list of nodes in the array.
728 void software_node_unregister_nodes(const struct software_node *nodes) in software_node_unregister_nodes() argument
732 for (i = 0; nodes[i].name; i++) in software_node_unregister_nodes()
733 software_node_unregister(&nodes[i]); in software_node_unregister_nodes()
738 * software_node_register_node_group - Register a group of software nodes
741 * Register multiple software nodes at once.
764 * software_node_unregister_node_group - Unregister a group of software nodes
767 * Unregister multiple software nodes at once.
782 * software_node_register - Register static software node
787 struct swnode *parent = software_node_to_swnode(node->parent); in software_node_register()
790 return -EEXIST; in software_node_register()
792 if (node->parent && !parent) in software_node_register()
793 return -EINVAL; in software_node_register()
800 * software_node_unregister - Unregister static software node
809 fwnode_remove_software_node(&swnode->fwnode); in software_node_unregister()
825 return ERR_PTR(-EINVAL); in fwnode_create_software_node()
831 return ERR_PTR(-ENOMEM); in fwnode_create_software_node()
839 node->parent = p ? p->node : NULL; in fwnode_create_software_node()
852 kobject_put(&swnode->kobj); in fwnode_remove_software_node()
866 fwnode = fwnode->secondary; in software_node_notify()
874 ret = sysfs_create_link(&dev->kobj, &swnode->kobj, in software_node_notify()
879 ret = sysfs_create_link(&swnode->kobj, &dev->kobj, in software_node_notify()
882 sysfs_remove_link(&dev->kobj, "software_node"); in software_node_notify()
885 kobject_get(&swnode->kobj); in software_node_notify()
888 sysfs_remove_link(&swnode->kobj, dev_name(dev)); in software_node_notify()
889 sysfs_remove_link(&dev->kobj, "software_node"); in software_node_notify()
890 kobject_put(&swnode->kobj); in software_node_notify()
903 return -ENOMEM; in software_node_init()