Lines Matching +full:device +full:- +full:handle
1 // SPDX-License-Identifier: GPL-2.0-only
3 * scan.c - support for transforming the ACPI namespace into individual objects
19 #include <linux/dma-map-ops.h>
31 #define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent) argument
35 static const char *dummy_hid = "device";
47 * The UART device described by the SPCR table is the only object which needs
48 * special-casing. Everything else is covered by ACPI namespace paths in STAO
81 hp->notify = notify; in acpi_initialize_hp_context()
82 hp->uevent = uevent; in acpi_initialize_hp_context()
91 return -EINVAL; in acpi_scan_add_handler()
93 list_add_tail(&handler->list_node, &acpi_scan_handlers_list); in acpi_scan_add_handler()
106 acpi_sysfs_add_hotplug_profile(&handler->hotplug, hotplug_profile_name); in acpi_scan_add_handler_with_hotplug()
120 mutex_lock_nested(&adev->physical_node_lock, SINGLE_DEPTH_NESTING); in acpi_scan_is_offline()
122 list_for_each_entry(pn, &adev->physical_node_list, node) in acpi_scan_is_offline()
123 if (device_supports_offline(pn->dev) && !pn->dev->offline) { in acpi_scan_is_offline()
125 kobject_uevent_env(&pn->dev->kobj, KOBJ_CHANGE, envp); in acpi_scan_is_offline()
131 mutex_unlock(&adev->physical_node_lock); in acpi_scan_is_offline()
135 static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data, in acpi_bus_offline() argument
138 struct acpi_device *device = NULL; in acpi_bus_offline() local
143 if (acpi_bus_get_device(handle, &device)) in acpi_bus_offline()
146 if (device->handler && !device->handler->hotplug.enabled) { in acpi_bus_offline()
147 *ret_p = &device->dev; in acpi_bus_offline()
151 mutex_lock(&device->physical_node_lock); in acpi_bus_offline()
153 list_for_each_entry(pn, &device->physical_node_list, node) { in acpi_bus_offline()
158 if (pn->put_online) in acpi_bus_offline()
161 pn->put_online = false; in acpi_bus_offline()
163 ret = device_offline(pn->dev); in acpi_bus_offline()
165 pn->put_online = !ret; in acpi_bus_offline()
167 *ret_p = pn->dev; in acpi_bus_offline()
175 mutex_unlock(&device->physical_node_lock); in acpi_bus_offline()
180 static acpi_status acpi_bus_online(acpi_handle handle, u32 lvl, void *data, in acpi_bus_online() argument
183 struct acpi_device *device = NULL; in acpi_bus_online() local
186 if (acpi_bus_get_device(handle, &device)) in acpi_bus_online()
189 mutex_lock(&device->physical_node_lock); in acpi_bus_online()
191 list_for_each_entry(pn, &device->physical_node_list, node) in acpi_bus_online()
192 if (pn->put_online) { in acpi_bus_online()
193 device_online(pn->dev); in acpi_bus_online()
194 pn->put_online = false; in acpi_bus_online()
197 mutex_unlock(&device->physical_node_lock); in acpi_bus_online()
202 static int acpi_scan_try_to_offline(struct acpi_device *device) in acpi_scan_try_to_offline() argument
204 acpi_handle handle = device->handle; in acpi_scan_try_to_offline() local
205 struct device *errdev = NULL; in acpi_scan_try_to_offline()
217 status = acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, in acpi_scan_try_to_offline()
222 acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, in acpi_scan_try_to_offline()
224 return -EPERM; in acpi_scan_try_to_offline()
226 acpi_bus_offline(handle, 0, (void *)false, (void **)&errdev); in acpi_scan_try_to_offline()
229 acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, in acpi_scan_try_to_offline()
233 acpi_bus_offline(handle, 0, (void *)true, in acpi_scan_try_to_offline()
238 acpi_bus_online(handle, 0, NULL, NULL); in acpi_scan_try_to_offline()
239 acpi_walk_namespace(ACPI_TYPE_ANY, handle, in acpi_scan_try_to_offline()
242 return -EBUSY; in acpi_scan_try_to_offline()
248 static int acpi_scan_hot_remove(struct acpi_device *device) in acpi_scan_hot_remove() argument
250 acpi_handle handle = device->handle; in acpi_scan_hot_remove() local
254 if (device->handler && device->handler->hotplug.demand_offline) { in acpi_scan_hot_remove()
255 if (!acpi_scan_is_offline(device, true)) in acpi_scan_hot_remove()
256 return -EBUSY; in acpi_scan_hot_remove()
258 int error = acpi_scan_try_to_offline(device); in acpi_scan_hot_remove()
263 acpi_handle_debug(handle, "Ejecting\n"); in acpi_scan_hot_remove()
265 acpi_bus_trim(device); in acpi_scan_hot_remove()
267 acpi_evaluate_lck(handle, 0); in acpi_scan_hot_remove()
271 status = acpi_evaluate_ej0(handle); in acpi_scan_hot_remove()
273 return -ENODEV; in acpi_scan_hot_remove()
275 return -EIO; in acpi_scan_hot_remove()
281 status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); in acpi_scan_hot_remove()
283 acpi_handle_warn(handle, in acpi_scan_hot_remove()
286 acpi_handle_warn(handle, in acpi_scan_hot_remove()
287 "Eject incomplete - status 0x%llx\n", sta); in acpi_scan_hot_remove()
296 dev_warn(&adev->dev, "Still not present\n"); in acpi_scan_device_not_present()
297 return -EALREADY; in acpi_scan_device_not_present()
308 if (adev->status.present || adev->status.functional) { in acpi_scan_device_check()
310 * This function is only called for device objects for which in acpi_scan_device_check()
312 * the scan handler is not attached to this device object yet in acpi_scan_device_check()
313 * is when the device has just appeared (either it wasn't in acpi_scan_device_check()
317 if (adev->handler) { in acpi_scan_device_check()
318 dev_warn(&adev->dev, "Already enumerated\n"); in acpi_scan_device_check()
319 return -EALREADY; in acpi_scan_device_check()
321 error = acpi_bus_scan(adev->handle); in acpi_scan_device_check()
323 dev_warn(&adev->dev, "Namespace scan failure\n"); in acpi_scan_device_check()
326 if (!adev->handler) { in acpi_scan_device_check()
327 dev_warn(&adev->dev, "Enumeration failure\n"); in acpi_scan_device_check()
328 error = -ENODEV; in acpi_scan_device_check()
338 struct acpi_scan_handler *handler = adev->handler; in acpi_scan_bus_check()
343 if (!(adev->status.present || adev->status.functional)) { in acpi_scan_bus_check()
347 if (handler && handler->hotplug.scan_dependent) in acpi_scan_bus_check()
348 return handler->hotplug.scan_dependent(adev); in acpi_scan_bus_check()
350 error = acpi_bus_scan(adev->handle); in acpi_scan_bus_check()
352 dev_warn(&adev->dev, "Namespace scan failure\n"); in acpi_scan_bus_check()
355 list_for_each_entry(child, &adev->children, node) { in acpi_scan_bus_check()
372 if (adev->handler && !adev->handler->hotplug.enabled) { in acpi_generic_hotplug_event()
373 dev_info(&adev->dev, "Eject disabled\n"); in acpi_generic_hotplug_event()
374 return -EPERM; in acpi_generic_hotplug_event()
376 acpi_evaluate_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST, in acpi_generic_hotplug_event()
380 return -EINVAL; in acpi_generic_hotplug_event()
386 int error = -ENODEV; in acpi_device_hotplug()
392 * The device object's ACPI handle cannot become invalid as long as we in acpi_device_hotplug()
396 if (adev->handle == INVALID_ACPI_HANDLE) in acpi_device_hotplug()
399 if (adev->flags.is_dock_station) { in acpi_device_hotplug()
401 } else if (adev->flags.hotplug_notify) { in acpi_device_hotplug()
407 notify = adev->hp ? adev->hp->notify : NULL; in acpi_device_hotplug()
410 * There may be additional notify handlers for device objects in acpi_device_hotplug()
422 case -EPERM: in acpi_device_hotplug()
425 case -EBUSY: in acpi_device_hotplug()
434 acpi_evaluate_ost(adev->handle, src, ost_code, NULL); in acpi_device_hotplug()
442 static void acpi_free_power_resources_lists(struct acpi_device *device) in acpi_free_power_resources_lists() argument
446 if (device->wakeup.flags.valid) in acpi_free_power_resources_lists()
447 acpi_power_resources_list_free(&device->wakeup.resources); in acpi_free_power_resources_lists()
449 if (!device->power.flags.power_resources) in acpi_free_power_resources_lists()
453 struct acpi_device_power_state *ps = &device->power.states[i]; in acpi_free_power_resources_lists()
454 acpi_power_resources_list_free(&ps->resources); in acpi_free_power_resources_lists()
458 static void acpi_device_release(struct device *dev) in acpi_device_release()
463 acpi_free_pnp_ids(&acpi_dev->pnp); in acpi_device_release()
468 static void acpi_device_del(struct acpi_device *device) in acpi_device_del() argument
473 if (device->parent) in acpi_device_del()
474 list_del(&device->node); in acpi_device_del()
477 if (!strcmp(acpi_device_bus_id->bus_id, in acpi_device_del()
478 acpi_device_hid(device))) { in acpi_device_del()
479 ida_simple_remove(&acpi_device_bus_id->instance_ida, device->pnp.instance_no); in acpi_device_del()
480 if (ida_is_empty(&acpi_device_bus_id->instance_ida)) { in acpi_device_del()
481 list_del(&acpi_device_bus_id->node); in acpi_device_del()
482 kfree_const(acpi_device_bus_id->bus_id); in acpi_device_del()
488 list_del(&device->wakeup_list); in acpi_device_del()
491 acpi_power_add_remove_device(device, false); in acpi_device_del()
492 acpi_device_remove_files(device); in acpi_device_del()
493 if (device->remove) in acpi_device_del()
494 device->remove(device); in acpi_device_del()
496 device_del(&device->dev); in acpi_device_del()
517 list_del(&adev->del_list); in acpi_device_del_work_fn()
527 * used by the device. in acpi_device_del_work_fn()
535 * acpi_scan_drop_device - Drop an ACPI device object.
536 * @handle: Handle of an ACPI namespace node, not used.
537 * @context: Address of the ACPI device object to drop.
540 * namespace node the device object pointed to by @context is attached to.
544 * ensure the correct ordering (the device objects must be unregistered in the
547 static void acpi_scan_drop_device(acpi_handle handle, void *context) in acpi_scan_drop_device() argument
557 * prevents attempts to register device objects identical to those being in acpi_scan_drop_device()
561 * those work items to ensure that they are not accessing stale device in acpi_scan_drop_device()
567 list_add_tail(&adev->del_list, &acpi_device_del_list); in acpi_scan_drop_device()
568 /* Make acpi_ns_validate_handle() return NULL for this handle. */ in acpi_scan_drop_device()
569 adev->handle = INVALID_ACPI_HANDLE; in acpi_scan_drop_device()
574 static struct acpi_device *handle_to_device(acpi_handle handle, in handle_to_device() argument
580 status = acpi_get_data_full(handle, acpi_scan_drop_device, in handle_to_device()
583 acpi_handle_debug(handle, "No context!\n"); in handle_to_device()
589 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) in acpi_bus_get_device() argument
591 if (!device) in acpi_bus_get_device()
592 return -EINVAL; in acpi_bus_get_device()
594 *device = handle_to_device(handle, NULL); in acpi_bus_get_device()
595 if (!*device) in acpi_bus_get_device()
596 return -ENODEV; in acpi_bus_get_device()
607 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle) in acpi_bus_get_acpi_device() argument
609 return handle_to_device(handle, get_acpi_device); in acpi_bus_get_acpi_device()
618 if (!strcmp(acpi_device_bus_id->bus_id, dev_id)) in acpi_device_bus_id_match()
624 static int acpi_device_set_name(struct acpi_device *device, in acpi_device_set_name() argument
627 struct ida *instance_ida = &acpi_device_bus_id->instance_ida; in acpi_device_set_name()
634 device->pnp.instance_no = result; in acpi_device_set_name()
635 dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, result); in acpi_device_set_name()
641 acpi_handle handle = adev->handle; in acpi_tie_acpi_dev() local
644 if (!handle) in acpi_tie_acpi_dev()
647 status = acpi_attach_data(handle, acpi_scan_drop_device, adev); in acpi_tie_acpi_dev()
649 acpi_handle_err(handle, "Unable to attach device data\n"); in acpi_tie_acpi_dev()
650 return -ENODEV; in acpi_tie_acpi_dev()
656 static int __acpi_device_add(struct acpi_device *device, in __acpi_device_add() argument
657 void (*release)(struct device *)) in __acpi_device_add() argument
664 * ------- in __acpi_device_add()
665 * Link this device to its parent and siblings. in __acpi_device_add()
667 INIT_LIST_HEAD(&device->children); in __acpi_device_add()
668 INIT_LIST_HEAD(&device->node); in __acpi_device_add()
669 INIT_LIST_HEAD(&device->wakeup_list); in __acpi_device_add()
670 INIT_LIST_HEAD(&device->physical_node_list); in __acpi_device_add()
671 INIT_LIST_HEAD(&device->del_list); in __acpi_device_add()
672 mutex_init(&device->physical_node_lock); in __acpi_device_add()
676 acpi_device_bus_id = acpi_device_bus_id_match(acpi_device_hid(device)); in __acpi_device_add()
678 result = acpi_device_set_name(device, acpi_device_bus_id); in __acpi_device_add()
685 result = -ENOMEM; in __acpi_device_add()
688 acpi_device_bus_id->bus_id = in __acpi_device_add()
689 kstrdup_const(acpi_device_hid(device), GFP_KERNEL); in __acpi_device_add()
690 if (!acpi_device_bus_id->bus_id) { in __acpi_device_add()
692 result = -ENOMEM; in __acpi_device_add()
696 ida_init(&acpi_device_bus_id->instance_ida); in __acpi_device_add()
698 result = acpi_device_set_name(device, acpi_device_bus_id); in __acpi_device_add()
700 kfree_const(acpi_device_bus_id->bus_id); in __acpi_device_add()
705 list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list); in __acpi_device_add()
708 if (device->parent) in __acpi_device_add()
709 list_add_tail(&device->node, &device->parent->children); in __acpi_device_add()
711 if (device->wakeup.flags.valid) in __acpi_device_add()
712 list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list); in __acpi_device_add()
716 if (device->parent) in __acpi_device_add()
717 device->dev.parent = &device->parent->dev; in __acpi_device_add()
719 device->dev.bus = &acpi_bus_type; in __acpi_device_add()
720 device->dev.release = release; in __acpi_device_add()
721 result = device_add(&device->dev); in __acpi_device_add()
723 dev_err(&device->dev, "Error registering device\n"); in __acpi_device_add()
727 result = acpi_device_setup_files(device); in __acpi_device_add()
729 pr_err("Error creating sysfs interface for device %s\n", in __acpi_device_add()
730 dev_name(&device->dev)); in __acpi_device_add()
737 if (device->parent) in __acpi_device_add()
738 list_del(&device->node); in __acpi_device_add()
740 list_del(&device->wakeup_list); in __acpi_device_add()
745 acpi_detach_data(device->handle, acpi_scan_drop_device); in __acpi_device_add()
750 int acpi_device_add(struct acpi_device *adev, void (*release)(struct device *)) in acpi_device_add() argument
761 /* --------------------------------------------------------------------------
762 Device Enumeration
763 -------------------------------------------------------------------------- */
770 if (!(info->valid & ACPI_VALID_HID)) in acpi_info_matches_ids()
773 index = match_string(ids, -1, info->hardware_id.string); in acpi_info_matches_ids()
777 if (info->valid & ACPI_VALID_CID) in acpi_info_matches_ids()
778 cid_list = &info->compatible_id_list; in acpi_info_matches_ids()
783 for (i = 0; i < cid_list->count; i++) { in acpi_info_matches_ids()
784 index = match_string(ids, -1, cid_list->ids[i].string); in acpi_info_matches_ids()
794 "PNP0D80", /* Windows-compatible System Power Management Controller */
795 "INT33BD", /* Intel Baytrail Mailbox Device */
799 static struct acpi_device *acpi_bus_get_parent(acpi_handle handle) in acpi_bus_get_parent() argument
801 struct acpi_device *device = NULL; in acpi_bus_get_parent() local
809 if (!handle) in acpi_bus_get_parent()
813 status = acpi_get_parent(handle, &handle); in acpi_bus_get_parent()
816 } while (acpi_bus_get_device(handle, &device)); in acpi_bus_get_parent()
817 return device; in acpi_bus_get_parent()
821 acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd) in acpi_bus_get_ejd() argument
828 status = acpi_get_handle(handle, "_EJD", &tmp); in acpi_bus_get_ejd()
832 status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer); in acpi_bus_get_ejd()
835 status = acpi_get_handle(ACPI_ROOT_OBJECT, obj->string.pointer, in acpi_bus_get_ejd()
845 acpi_handle handle = dev->handle; in acpi_bus_extract_wakeup_device_power_package() local
846 struct acpi_device_wakeup *wakeup = &dev->wakeup; in acpi_bus_extract_wakeup_device_power_package()
851 int err = -ENODATA; in acpi_bus_extract_wakeup_device_power_package()
853 INIT_LIST_HEAD(&wakeup->resources); in acpi_bus_extract_wakeup_device_power_package()
856 status = acpi_evaluate_object(handle, "_PRW", NULL, &buffer); in acpi_bus_extract_wakeup_device_power_package()
858 acpi_handle_info(handle, "_PRW evaluation failed: %s\n", in acpi_bus_extract_wakeup_device_power_package()
865 if (!package || package->package.count < 2) in acpi_bus_extract_wakeup_device_power_package()
868 element = &(package->package.elements[0]); in acpi_bus_extract_wakeup_device_power_package()
872 if (element->type == ACPI_TYPE_PACKAGE) { in acpi_bus_extract_wakeup_device_power_package()
873 if ((element->package.count < 2) || in acpi_bus_extract_wakeup_device_power_package()
874 (element->package.elements[0].type != in acpi_bus_extract_wakeup_device_power_package()
876 || (element->package.elements[1].type != ACPI_TYPE_INTEGER)) in acpi_bus_extract_wakeup_device_power_package()
879 wakeup->gpe_device = in acpi_bus_extract_wakeup_device_power_package()
880 element->package.elements[0].reference.handle; in acpi_bus_extract_wakeup_device_power_package()
881 wakeup->gpe_number = in acpi_bus_extract_wakeup_device_power_package()
882 (u32) element->package.elements[1].integer.value; in acpi_bus_extract_wakeup_device_power_package()
883 } else if (element->type == ACPI_TYPE_INTEGER) { in acpi_bus_extract_wakeup_device_power_package()
884 wakeup->gpe_device = NULL; in acpi_bus_extract_wakeup_device_power_package()
885 wakeup->gpe_number = element->integer.value; in acpi_bus_extract_wakeup_device_power_package()
890 element = &(package->package.elements[1]); in acpi_bus_extract_wakeup_device_power_package()
891 if (element->type != ACPI_TYPE_INTEGER) in acpi_bus_extract_wakeup_device_power_package()
894 wakeup->sleep_state = element->integer.value; in acpi_bus_extract_wakeup_device_power_package()
896 err = acpi_extract_power_resources(package, 2, &wakeup->resources); in acpi_bus_extract_wakeup_device_power_package()
900 if (!list_empty(&wakeup->resources)) { in acpi_bus_extract_wakeup_device_power_package()
903 err = acpi_power_wakeup_list_init(&wakeup->resources, in acpi_bus_extract_wakeup_device_power_package()
906 acpi_handle_warn(handle, "Retrieving current states " in acpi_bus_extract_wakeup_device_power_package()
908 acpi_power_resources_list_free(&wakeup->resources); in acpi_bus_extract_wakeup_device_power_package()
911 if (sleep_state < wakeup->sleep_state) { in acpi_bus_extract_wakeup_device_power_package()
912 acpi_handle_warn(handle, "Overriding _PRW sleep state " in acpi_bus_extract_wakeup_device_power_package()
914 (int)wakeup->sleep_state, sleep_state); in acpi_bus_extract_wakeup_device_power_package()
915 wakeup->sleep_state = sleep_state; in acpi_bus_extract_wakeup_device_power_package()
924 static bool acpi_wakeup_gpe_init(struct acpi_device *device) in acpi_wakeup_gpe_init() argument
932 struct acpi_device_wakeup *wakeup = &device->wakeup; in acpi_wakeup_gpe_init()
935 wakeup->flags.notifier_present = 0; in acpi_wakeup_gpe_init()
938 if (!acpi_match_device_ids(device, button_device_ids)) { in acpi_wakeup_gpe_init()
939 if (!acpi_match_device_ids(device, &button_device_ids[1])) { in acpi_wakeup_gpe_init()
941 if (wakeup->sleep_state == ACPI_STATE_S5) in acpi_wakeup_gpe_init()
942 wakeup->sleep_state = ACPI_STATE_S4; in acpi_wakeup_gpe_init()
944 acpi_mark_gpe_for_wake(wakeup->gpe_device, wakeup->gpe_number); in acpi_wakeup_gpe_init()
945 device_set_wakeup_capable(&device->dev, true); in acpi_wakeup_gpe_init()
949 status = acpi_setup_gpe_for_wake(device->handle, wakeup->gpe_device, in acpi_wakeup_gpe_init()
950 wakeup->gpe_number); in acpi_wakeup_gpe_init()
954 static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device) in acpi_bus_get_wakeup_device_flags() argument
959 if (!acpi_has_method(device->handle, "_PRW")) in acpi_bus_get_wakeup_device_flags()
962 err = acpi_bus_extract_wakeup_device_power_package(device); in acpi_bus_get_wakeup_device_flags()
964 dev_err(&device->dev, "Unable to extract wakeup power resources"); in acpi_bus_get_wakeup_device_flags()
968 device->wakeup.flags.valid = acpi_wakeup_gpe_init(device); in acpi_bus_get_wakeup_device_flags()
969 device->wakeup.prepare_count = 0; in acpi_bus_get_wakeup_device_flags()
972 * system for the ACPI device with the _PRW object. in acpi_bus_get_wakeup_device_flags()
977 err = acpi_device_sleep_wake(device, 0, 0, 0); in acpi_bus_get_wakeup_device_flags()
982 static void acpi_bus_init_power_state(struct acpi_device *device, int state) in acpi_bus_init_power_state() argument
984 struct acpi_device_power_state *ps = &device->power.states[state]; in acpi_bus_init_power_state()
989 INIT_LIST_HEAD(&ps->resources); in acpi_bus_init_power_state()
992 status = acpi_evaluate_object(device->handle, pathname, NULL, &buffer); in acpi_bus_init_power_state()
997 && package->type == ACPI_TYPE_PACKAGE in acpi_bus_init_power_state()
998 && package->package.count) in acpi_bus_init_power_state()
999 acpi_extract_power_resources(package, 0, &ps->resources); in acpi_bus_init_power_state()
1006 if (acpi_has_method(device->handle, pathname)) in acpi_bus_init_power_state()
1007 ps->flags.explicit_set = 1; in acpi_bus_init_power_state()
1009 /* State is valid if there are means to put the device into it. */ in acpi_bus_init_power_state()
1010 if (!list_empty(&ps->resources) || ps->flags.explicit_set) in acpi_bus_init_power_state()
1011 ps->flags.valid = 1; in acpi_bus_init_power_state()
1013 ps->power = -1; /* Unknown - driver assigned */ in acpi_bus_init_power_state()
1014 ps->latency = -1; /* Unknown - driver assigned */ in acpi_bus_init_power_state()
1017 static void acpi_bus_get_power_flags(struct acpi_device *device) in acpi_bus_get_power_flags() argument
1022 if (!acpi_has_method(device->handle, "_PS0") && in acpi_bus_get_power_flags()
1023 !acpi_has_method(device->handle, "_PR0")) in acpi_bus_get_power_flags()
1026 device->flags.power_manageable = 1; in acpi_bus_get_power_flags()
1031 if (acpi_has_method(device->handle, "_PSC")) in acpi_bus_get_power_flags()
1032 device->power.flags.explicit_get = 1; in acpi_bus_get_power_flags()
1034 if (acpi_has_method(device->handle, "_IRC")) in acpi_bus_get_power_flags()
1035 device->power.flags.inrush_current = 1; in acpi_bus_get_power_flags()
1037 if (acpi_has_method(device->handle, "_DSW")) in acpi_bus_get_power_flags()
1038 device->power.flags.dsw_present = 1; in acpi_bus_get_power_flags()
1044 acpi_bus_init_power_state(device, i); in acpi_bus_get_power_flags()
1046 INIT_LIST_HEAD(&device->power.states[ACPI_STATE_D3_COLD].resources); in acpi_bus_get_power_flags()
1049 device->power.states[ACPI_STATE_D0].flags.valid = 1; in acpi_bus_get_power_flags()
1050 device->power.states[ACPI_STATE_D0].power = 100; in acpi_bus_get_power_flags()
1051 device->power.states[ACPI_STATE_D3_HOT].flags.valid = 1; in acpi_bus_get_power_flags()
1058 if (!list_empty(&device->power.states[ACPI_STATE_D0].resources)) { in acpi_bus_get_power_flags()
1059 device->power.flags.power_resources = 1; in acpi_bus_get_power_flags()
1064 if (!list_empty(&device->power.states[ACPI_STATE_D3_HOT].resources)) in acpi_bus_get_power_flags()
1065 device->power.states[ACPI_STATE_D3_COLD].flags.valid = 1; in acpi_bus_get_power_flags()
1068 if (acpi_bus_init_power(device)) in acpi_bus_get_power_flags()
1069 device->flags.power_manageable = 0; in acpi_bus_get_power_flags()
1072 static void acpi_bus_get_flags(struct acpi_device *device) in acpi_bus_get_flags() argument
1075 if (acpi_has_method(device->handle, "_STA")) in acpi_bus_get_flags()
1076 device->flags.dynamic_status = 1; in acpi_bus_get_flags()
1079 if (acpi_has_method(device->handle, "_RMV")) in acpi_bus_get_flags()
1080 device->flags.removable = 1; in acpi_bus_get_flags()
1083 if (acpi_has_method(device->handle, "_EJD") || in acpi_bus_get_flags()
1084 acpi_has_method(device->handle, "_EJ0")) in acpi_bus_get_flags()
1085 device->flags.ejectable = 1; in acpi_bus_get_flags()
1088 static void acpi_device_get_busid(struct acpi_device *device) in acpi_device_get_busid() argument
1096 * ------ in acpi_device_get_busid()
1097 * The device's Bus ID is simply the object name. in acpi_device_get_busid()
1100 if (ACPI_IS_ROOT_DEVICE(device)) { in acpi_device_get_busid()
1101 strcpy(device->pnp.bus_id, "ACPI"); in acpi_device_get_busid()
1105 switch (device->device_type) { in acpi_device_get_busid()
1107 strcpy(device->pnp.bus_id, "PWRF"); in acpi_device_get_busid()
1110 strcpy(device->pnp.bus_id, "SLPF"); in acpi_device_get_busid()
1113 strcpy(device->pnp.bus_id, "ECDT"); in acpi_device_get_busid()
1116 acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer); in acpi_device_get_busid()
1118 for (i = 3; i > 1; i--) { in acpi_device_get_busid()
1124 strcpy(device->pnp.bus_id, bus_id); in acpi_device_get_busid()
1130 * acpi_ata_match - see if an acpi object is an ATA device
1133 * then we can safely call it an ATA device.
1135 bool acpi_ata_match(acpi_handle handle) in acpi_ata_match() argument
1137 return acpi_has_method(handle, "_GTF") || in acpi_ata_match()
1138 acpi_has_method(handle, "_GTM") || in acpi_ata_match()
1139 acpi_has_method(handle, "_STM") || in acpi_ata_match()
1140 acpi_has_method(handle, "_SDD"); in acpi_ata_match()
1144 * acpi_bay_match - see if an acpi object is an ejectable driver bay
1149 bool acpi_bay_match(acpi_handle handle) in acpi_bay_match() argument
1153 if (!acpi_has_method(handle, "_EJ0")) in acpi_bay_match()
1155 if (acpi_ata_match(handle)) in acpi_bay_match()
1157 if (ACPI_FAILURE(acpi_get_parent(handle, &phandle))) in acpi_bay_match()
1167 list_for_each_entry(hwid, &adev->pnp.ids, list) in acpi_device_is_battery()
1168 if (!strcmp("PNP0C0A", hwid->id)) in acpi_device_is_battery()
1176 acpi_handle handle = adev->handle; in is_ejectable_bay() local
1178 if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(adev)) in is_ejectable_bay()
1181 return acpi_bay_match(handle); in is_ejectable_bay()
1185 * acpi_dock_match - see if an acpi object has a _DCK method
1187 bool acpi_dock_match(acpi_handle handle) in acpi_dock_match() argument
1189 return acpi_has_method(handle, "_DCK"); in acpi_dock_match()
1193 acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context, in acpi_backlight_cap_match() argument
1198 if (acpi_has_method(handle, "_BCM") && in acpi_backlight_cap_match()
1199 acpi_has_method(handle, "_BCL")) { in acpi_backlight_cap_match()
1200 acpi_handle_debug(handle, "Found generic backlight support\n"); in acpi_backlight_cap_match()
1208 /* Returns true if the ACPI object is a video device which can be
1210 * The device will get a Linux specific CID added in scan.c to
1211 * identify the device as an ACPI graphics device
1212 * Be aware that the graphics device may not be physically present
1216 long acpi_is_video_device(acpi_handle handle) in acpi_is_video_device() argument
1220 /* Is this device able to support video switching ? */ in acpi_is_video_device()
1221 if (acpi_has_method(handle, "_DOD") || acpi_has_method(handle, "_DOS")) in acpi_is_video_device()
1224 /* Is this device able to retrieve a video ROM ? */ in acpi_is_video_device()
1225 if (acpi_has_method(handle, "_ROM")) in acpi_is_video_device()
1228 /* Is this device able to configure which video head to be POSTed ? */ in acpi_is_video_device()
1229 if (acpi_has_method(handle, "_VPO") && in acpi_is_video_device()
1230 acpi_has_method(handle, "_GPD") && in acpi_is_video_device()
1231 acpi_has_method(handle, "_SPD")) in acpi_is_video_device()
1236 acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, in acpi_is_video_device()
1244 const char *acpi_device_hid(struct acpi_device *device) in acpi_device_hid() argument
1248 if (list_empty(&device->pnp.ids)) in acpi_device_hid()
1251 hid = list_first_entry(&device->pnp.ids, struct acpi_hardware_id, list); in acpi_device_hid()
1252 return hid->id; in acpi_device_hid()
1264 id->id = kstrdup_const(dev_id, GFP_KERNEL); in acpi_add_id()
1265 if (!id->id) { in acpi_add_id()
1270 list_add_tail(&id->list, &pnp->ids); in acpi_add_id()
1271 pnp->type.hardware_id = 1; in acpi_add_id()
1279 static bool acpi_ibm_smbus_match(acpi_handle handle) in acpi_ibm_smbus_match() argument
1288 if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &path)) || in acpi_ibm_smbus_match()
1293 if (acpi_has_method(handle, "SBI") && in acpi_ibm_smbus_match()
1294 acpi_has_method(handle, "SBR") && in acpi_ibm_smbus_match()
1295 acpi_has_method(handle, "SBW")) in acpi_ibm_smbus_match()
1301 static bool acpi_object_is_system_bus(acpi_handle handle) in acpi_object_is_system_bus() argument
1306 tmp == handle) in acpi_object_is_system_bus()
1309 tmp == handle) in acpi_object_is_system_bus()
1315 static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, in acpi_set_pnp_ids() argument
1324 if (handle == ACPI_ROOT_OBJECT) { in acpi_set_pnp_ids()
1329 acpi_get_object_info(handle, &info); in acpi_set_pnp_ids()
1331 pr_err("%s: Error reading device info\n", __func__); in acpi_set_pnp_ids()
1335 if (info->valid & ACPI_VALID_HID) { in acpi_set_pnp_ids()
1336 acpi_add_id(pnp, info->hardware_id.string); in acpi_set_pnp_ids()
1337 pnp->type.platform_id = 1; in acpi_set_pnp_ids()
1339 if (info->valid & ACPI_VALID_CID) { in acpi_set_pnp_ids()
1340 cid_list = &info->compatible_id_list; in acpi_set_pnp_ids()
1341 for (i = 0; i < cid_list->count; i++) in acpi_set_pnp_ids()
1342 acpi_add_id(pnp, cid_list->ids[i].string); in acpi_set_pnp_ids()
1344 if (info->valid & ACPI_VALID_ADR) { in acpi_set_pnp_ids()
1345 pnp->bus_address = info->address; in acpi_set_pnp_ids()
1346 pnp->type.bus_address = 1; in acpi_set_pnp_ids()
1348 if (info->valid & ACPI_VALID_UID) in acpi_set_pnp_ids()
1349 pnp->unique_id = kstrdup(info->unique_id.string, in acpi_set_pnp_ids()
1351 if (info->valid & ACPI_VALID_CLS) in acpi_set_pnp_ids()
1352 acpi_add_id(pnp, info->class_code.string); in acpi_set_pnp_ids()
1360 if (acpi_is_video_device(handle)) in acpi_set_pnp_ids()
1362 else if (acpi_bay_match(handle)) in acpi_set_pnp_ids()
1364 else if (acpi_dock_match(handle)) in acpi_set_pnp_ids()
1366 else if (acpi_ibm_smbus_match(handle)) in acpi_set_pnp_ids()
1368 else if (list_empty(&pnp->ids) && in acpi_set_pnp_ids()
1369 acpi_object_is_system_bus(handle)) { in acpi_set_pnp_ids()
1372 strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME); in acpi_set_pnp_ids()
1373 strcpy(pnp->device_class, ACPI_BUS_CLASS); in acpi_set_pnp_ids()
1402 list_for_each_entry_safe(id, tmp, &pnp->ids, list) { in acpi_free_pnp_ids()
1403 kfree_const(id->id); in acpi_free_pnp_ids()
1406 kfree(pnp->unique_id); in acpi_free_pnp_ids()
1410 * acpi_dma_supported - Check DMA support for the specified device.
1411 * @adev: The pointer to acpi device
1420 if (adev->flags.cca_seen) in acpi_dma_supported()
1424 * Per ACPI 6.0 sec 6.2.17, assume devices can do cache-coherent in acpi_dma_supported()
1435 * acpi_get_dma_attr - Check the supported DMA attr for the specified device.
1436 * @adev: The pointer to acpi device
1445 if (adev->flags.coherent_dma) in acpi_get_dma_attr()
1452 * acpi_dma_get_range() - Get device DMA parameters.
1454 * @dev: device to configure
1455 * @dma_addr: pointer device DMA address result
1465 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, in acpi_dma_get_range()
1472 struct device *dma_dev = dev; in acpi_dma_get_range()
1476 * Walk the device tree chasing an ACPI companion with a _DMA in acpi_dma_get_range()
1477 * object while we go. Stop if we find a device with an ACPI in acpi_dma_get_range()
1482 if (adev && acpi_has_method(adev->handle, METHOD_NAME__DMA)) in acpi_dma_get_range()
1485 dma_dev = dma_dev->parent; in acpi_dma_get_range()
1489 return -ENODEV; in acpi_dma_get_range()
1491 if (!acpi_has_method(adev->handle, METHOD_NAME__CRS)) { in acpi_dma_get_range()
1492 acpi_handle_warn(adev->handle, "_DMA is valid only if _CRS is present\n"); in acpi_dma_get_range()
1493 return -EINVAL; in acpi_dma_get_range()
1499 if (dma_offset && rentry->offset != dma_offset) { in acpi_dma_get_range()
1500 ret = -EINVAL; in acpi_dma_get_range()
1501 dev_warn(dma_dev, "Can't handle multiple windows with different offsets\n"); in acpi_dma_get_range()
1504 dma_offset = rentry->offset; in acpi_dma_get_range()
1507 if (rentry->res->start < dma_start) in acpi_dma_get_range()
1508 dma_start = rentry->res->start; in acpi_dma_get_range()
1509 if (rentry->res->end > dma_end) in acpi_dma_get_range()
1510 dma_end = rentry->res->end; in acpi_dma_get_range()
1514 ret = -EINVAL; in acpi_dma_get_range()
1519 *dma_addr = dma_start - dma_offset; in acpi_dma_get_range()
1520 len = dma_end - dma_start; in acpi_dma_get_range()
1531 int acpi_iommu_fwspec_init(struct device *dev, u32 id, in acpi_iommu_fwspec_init()
1543 static inline const struct iommu_ops *acpi_iommu_fwspec_ops(struct device *dev) in acpi_iommu_fwspec_ops()
1547 return fwspec ? fwspec->ops : NULL; in acpi_iommu_fwspec_ops()
1550 static const struct iommu_ops *acpi_iommu_configure_id(struct device *dev, in acpi_iommu_configure_id()
1565 if (err && err != -EPROBE_DEFER) in acpi_iommu_configure_id()
1572 if (!err && dev->bus && !device_iommu_mapped(dev)) in acpi_iommu_configure_id()
1576 if (err == -EPROBE_DEFER) { in acpi_iommu_configure_id()
1587 int acpi_iommu_fwspec_init(struct device *dev, u32 id, in acpi_iommu_fwspec_init()
1591 return -ENODEV; in acpi_iommu_fwspec_init()
1594 static const struct iommu_ops *acpi_iommu_configure_id(struct device *dev, in acpi_iommu_configure_id()
1603 * acpi_dma_configure_id - Set-up DMA configuration for the device.
1604 * @dev: The pointer to the device
1605 * @attr: device dma attributes
1606 * @input_id: input device id const value pointer
1608 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, in acpi_dma_configure_id()
1622 if (PTR_ERR(iommu) == -EPROBE_DEFER) in acpi_dma_configure_id()
1623 return -EPROBE_DEFER; in acpi_dma_configure_id()
1636 struct acpi_device *parent = adev->parent; in acpi_init_coherency()
1638 if (parent && parent->flags.cca_seen) { in acpi_init_coherency()
1643 adev->flags.cca_seen = 1; in acpi_init_coherency()
1644 cca = parent->flags.coherent_dma; in acpi_init_coherency()
1646 status = acpi_evaluate_integer(adev->handle, "_CCA", in acpi_init_coherency()
1649 adev->flags.cca_seen = 1; in acpi_init_coherency()
1653 * required for DMA-able devices (e.g. x86), in acpi_init_coherency()
1658 acpi_handle_debug(adev->handle, in acpi_init_coherency()
1659 "ACPI device is missing _CCA.\n"); in acpi_init_coherency()
1662 adev->flags.coherent_dma = cca; in acpi_init_coherency()
1669 if (ares->type != ACPI_RESOURCE_TYPE_SERIAL_BUS) in acpi_check_serial_bus_slave()
1675 return -1; in acpi_check_serial_bus_slave()
1678 static bool acpi_is_indirect_io_slave(struct acpi_device *device) in acpi_is_indirect_io_slave() argument
1680 struct acpi_device *parent = device->parent; in acpi_is_indirect_io_slave()
1689 static bool acpi_device_enumeration_by_parent(struct acpi_device *device) in acpi_device_enumeration_by_parent() argument
1694 * These devices have multiple I2cSerialBus resources and an i2c-client in acpi_device_enumeration_by_parent()
1696 * Normally we only instantiate an i2c-client for the first resource, in acpi_device_enumeration_by_parent()
1698 * drivers/platform/x86/i2c-multi-instantiate.c driver, which knows in acpi_device_enumeration_by_parent()
1709 if (acpi_is_indirect_io_slave(device)) in acpi_device_enumeration_by_parent()
1712 /* Macs use device properties in lieu of _CRS resources */ in acpi_device_enumeration_by_parent()
1714 (fwnode_property_present(&device->fwnode, "spiSclkPeriod") || in acpi_device_enumeration_by_parent()
1715 fwnode_property_present(&device->fwnode, "i2cAddress") || in acpi_device_enumeration_by_parent()
1716 fwnode_property_present(&device->fwnode, "baud"))) in acpi_device_enumeration_by_parent()
1719 /* Instantiate a pdev for the i2c-multi-instantiate drv to bind to */ in acpi_device_enumeration_by_parent()
1720 if (!acpi_match_device_ids(device, i2c_multi_instantiate_ids)) in acpi_device_enumeration_by_parent()
1724 acpi_dev_get_resources(device, &resource_list, in acpi_device_enumeration_by_parent()
1732 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, in acpi_init_device_object() argument
1735 INIT_LIST_HEAD(&device->pnp.ids); in acpi_init_device_object()
1736 device->device_type = type; in acpi_init_device_object()
1737 device->handle = handle; in acpi_init_device_object()
1738 device->parent = acpi_bus_get_parent(handle); in acpi_init_device_object()
1739 fwnode_init(&device->fwnode, &acpi_device_fwnode_ops); in acpi_init_device_object()
1740 acpi_set_device_status(device, ACPI_STA_DEFAULT); in acpi_init_device_object()
1741 acpi_device_get_busid(device); in acpi_init_device_object()
1742 acpi_set_pnp_ids(handle, &device->pnp, type); in acpi_init_device_object()
1743 acpi_init_properties(device); in acpi_init_device_object()
1744 acpi_bus_get_flags(device); in acpi_init_device_object()
1745 device->flags.match_driver = false; in acpi_init_device_object()
1746 device->flags.initialized = true; in acpi_init_device_object()
1747 device->flags.enumeration_by_parent = in acpi_init_device_object()
1748 acpi_device_enumeration_by_parent(device); in acpi_init_device_object()
1749 acpi_device_clear_enumerated(device); in acpi_init_device_object()
1750 device_initialize(&device->dev); in acpi_init_device_object()
1751 dev_set_uevent_suppress(&device->dev, true); in acpi_init_device_object()
1752 acpi_init_coherency(device); in acpi_init_device_object()
1760 if (dep->consumer == adev->handle) in acpi_scan_dep_init()
1761 adev->dep_unmet++; in acpi_scan_dep_init()
1765 void acpi_device_add_finalize(struct acpi_device *device) in acpi_device_add_finalize() argument
1767 dev_set_uevent_suppress(&device->dev, false); in acpi_device_add_finalize()
1768 kobject_uevent(&device->dev.kobj, KOBJ_ADD); in acpi_device_add_finalize()
1778 acpi_handle handle, int type, bool dep_init) in acpi_add_single_object() argument
1780 struct acpi_device *device; in acpi_add_single_object() local
1784 device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL); in acpi_add_single_object()
1785 if (!device) in acpi_add_single_object()
1786 return -ENOMEM; in acpi_add_single_object()
1788 acpi_init_device_object(device, handle, type); in acpi_add_single_object()
1792 * this must be done before the get power-/wakeup_dev-flags calls. in acpi_add_single_object()
1801 * updating dep_unmet for the device. in acpi_add_single_object()
1804 acpi_scan_dep_init(device); in acpi_add_single_object()
1806 acpi_scan_init_status(device); in acpi_add_single_object()
1809 acpi_bus_get_power_flags(device); in acpi_add_single_object()
1810 acpi_bus_get_wakeup_device_flags(device); in acpi_add_single_object()
1812 result = acpi_tie_acpi_dev(device); in acpi_add_single_object()
1818 result = __acpi_device_add(device, acpi_device_release); in acpi_add_single_object()
1821 acpi_device_release(&device->dev); in acpi_add_single_object()
1825 acpi_power_add_remove_device(device, true); in acpi_add_single_object()
1826 acpi_device_add_finalize(device); in acpi_add_single_object()
1828 acpi_handle_debug(handle, "Added as %s, parent %s\n", in acpi_add_single_object()
1829 dev_name(&device->dev), device->parent ? in acpi_add_single_object()
1830 dev_name(&device->parent->dev) : "(null)"); in acpi_add_single_object()
1832 *child = device; in acpi_add_single_object()
1847 static bool acpi_device_should_be_hidden(acpi_handle handle) in acpi_device_should_be_hidden() argument
1852 /* Check if it should ignore the UART device */ in acpi_device_should_be_hidden()
1853 if (!(spcr_uart_addr && acpi_has_method(handle, METHOD_NAME__CRS))) in acpi_device_should_be_hidden()
1857 * The UART device described in SPCR table is assumed to have only one in acpi_device_should_be_hidden()
1860 status = acpi_walk_resources(handle, METHOD_NAME__CRS, in acpi_device_should_be_hidden()
1865 acpi_handle_info(handle, "The UART device @%pa in SPCR table will be hidden\n", in acpi_device_should_be_hidden()
1873 return adev->status.present || adev->status.functional; in acpi_device_is_present()
1882 if (handler->match) in acpi_scan_handler_matching()
1883 return handler->match(idstr, matchid); in acpi_scan_handler_matching()
1885 for (devid = handler->ids; devid->id[0]; devid++) in acpi_scan_handler_matching()
1886 if (!strcmp((char *)devid->id, idstr)) { in acpi_scan_handler_matching()
1910 if (!!hotplug->enabled == !!val) in acpi_scan_hotplug_enabled()
1915 hotplug->enabled = val; in acpi_scan_hotplug_enabled()
1924 if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev)) { in acpi_scan_init_hotplug()
1928 list_for_each_entry(hwid, &adev->pnp.ids, list) { in acpi_scan_init_hotplug()
1931 handler = acpi_scan_match_handler(hwid->id, NULL); in acpi_scan_init_hotplug()
1933 adev->flags.hotplug_notify = true; in acpi_scan_init_hotplug()
1939 static u32 acpi_scan_check_dep(acpi_handle handle, bool check_dep) in acpi_scan_check_dep() argument
1952 if (!check_dep || !acpi_has_method(handle, "_DEP") || in acpi_scan_check_dep()
1953 !acpi_has_method(handle, "_HID")) in acpi_scan_check_dep()
1956 status = acpi_evaluate_reference(handle, "_DEP", NULL, &dep_devices); in acpi_scan_check_dep()
1958 acpi_handle_debug(handle, "Failed to evaluate _DEP.\n"); in acpi_scan_check_dep()
1969 acpi_handle_debug(handle, "Error reading _DEP device info\n"); in acpi_scan_check_dep()
1985 dep->supplier = dep_devices.handles[i]; in acpi_scan_check_dep()
1986 dep->consumer = handle; in acpi_scan_check_dep()
1989 list_add_tail(&dep->node , &acpi_dep_list); in acpi_scan_check_dep()
1998 static acpi_status acpi_bus_check_add(acpi_handle handle, bool check_dep, in acpi_bus_check_add() argument
2001 struct acpi_device *device = NULL; in acpi_bus_check_add() local
2005 acpi_bus_get_device(handle, &device); in acpi_bus_check_add()
2006 if (device) in acpi_bus_check_add()
2009 if (ACPI_FAILURE(acpi_get_type(handle, &acpi_type))) in acpi_bus_check_add()
2014 if (acpi_device_should_be_hidden(handle)) in acpi_bus_check_add()
2018 if (acpi_scan_check_dep(handle, check_dep) > 0) { in acpi_bus_check_add()
2037 acpi_add_power_resource(handle); in acpi_bus_check_add()
2044 * If check_dep is true at this point, the device has no dependencies, in acpi_bus_check_add()
2045 * or the creation of the device object would have been postponed above. in acpi_bus_check_add()
2047 acpi_add_single_object(&device, handle, type, !check_dep); in acpi_bus_check_add()
2048 if (!device) in acpi_bus_check_add()
2051 acpi_scan_init_hotplug(device); in acpi_bus_check_add()
2055 *adev_p = device; in acpi_bus_check_add()
2060 static acpi_status acpi_bus_check_add_1(acpi_handle handle, u32 lvl_not_used, in acpi_bus_check_add_1() argument
2063 return acpi_bus_check_add(handle, true, (struct acpi_device **)ret_p); in acpi_bus_check_add_1()
2066 static acpi_status acpi_bus_check_add_2(acpi_handle handle, u32 lvl_not_used, in acpi_bus_check_add_2() argument
2069 return acpi_bus_check_add(handle, false, (struct acpi_device **)ret_p); in acpi_bus_check_add_2()
2072 static void acpi_default_enumeration(struct acpi_device *device) in acpi_default_enumeration() argument
2078 if (!device->flags.enumeration_by_parent) { in acpi_default_enumeration()
2079 acpi_create_platform_device(device, NULL); in acpi_default_enumeration()
2080 acpi_device_set_enumerated(device); in acpi_default_enumeration()
2083 ACPI_RECONFIG_DEVICE_ADD, device); in acpi_default_enumeration()
2099 if (adev->data.of_compatible) in acpi_generic_device_attach()
2110 static int acpi_scan_attach_handler(struct acpi_device *device) in acpi_scan_attach_handler() argument
2115 list_for_each_entry(hwid, &device->pnp.ids, list) { in acpi_scan_attach_handler()
2119 handler = acpi_scan_match_handler(hwid->id, &devid); in acpi_scan_attach_handler()
2121 if (!handler->attach) { in acpi_scan_attach_handler()
2122 device->pnp.type.platform_id = 0; in acpi_scan_attach_handler()
2125 device->handler = handler; in acpi_scan_attach_handler()
2126 ret = handler->attach(device, devid); in acpi_scan_attach_handler()
2130 device->handler = NULL; in acpi_scan_attach_handler()
2139 static void acpi_bus_attach(struct acpi_device *device, bool first_pass) in acpi_bus_attach() argument
2142 bool skip = !first_pass && device->flags.visited; in acpi_bus_attach()
2149 if (ACPI_SUCCESS(acpi_bus_get_ejd(device->handle, &ejd))) in acpi_bus_attach()
2150 register_dock_dependent_device(device, ejd); in acpi_bus_attach()
2152 acpi_bus_get_status(device); in acpi_bus_attach()
2154 if (!acpi_device_is_present(device)) { in acpi_bus_attach()
2155 device->flags.initialized = false; in acpi_bus_attach()
2156 acpi_device_clear_enumerated(device); in acpi_bus_attach()
2157 device->flags.power_manageable = 0; in acpi_bus_attach()
2160 if (device->handler) in acpi_bus_attach()
2163 if (!device->flags.initialized) { in acpi_bus_attach()
2164 device->flags.power_manageable = in acpi_bus_attach()
2165 device->power.states[ACPI_STATE_D0].flags.valid; in acpi_bus_attach()
2166 if (acpi_bus_init_power(device)) in acpi_bus_attach()
2167 device->flags.power_manageable = 0; in acpi_bus_attach()
2169 device->flags.initialized = true; in acpi_bus_attach()
2170 } else if (device->flags.visited) { in acpi_bus_attach()
2174 ret = acpi_scan_attach_handler(device); in acpi_bus_attach()
2178 device->flags.match_driver = true; in acpi_bus_attach()
2179 if (ret > 0 && !device->flags.enumeration_by_parent) { in acpi_bus_attach()
2180 acpi_device_set_enumerated(device); in acpi_bus_attach()
2184 ret = device_attach(&device->dev); in acpi_bus_attach()
2188 if (device->pnp.type.platform_id || device->flags.enumeration_by_parent) in acpi_bus_attach()
2189 acpi_default_enumeration(device); in acpi_bus_attach()
2191 acpi_device_set_enumerated(device); in acpi_bus_attach()
2194 list_for_each_entry(child, &device->children, node) in acpi_bus_attach()
2197 if (!skip && device->handler && device->handler->hotplug.notify_online) in acpi_bus_attach()
2198 device->handler->hotplug.notify_online(device); in acpi_bus_attach()
2205 adev = acpi_bus_get_acpi_device(dep->consumer); in acpi_dev_get_first_consumer_dev_cb()
2210 /* Continue parsing if the device object is not present. */ in acpi_dev_get_first_consumer_dev_cb()
2226 acpi_bus_attach(cdw->adev, true); in acpi_scan_clear_dep_fn()
2229 acpi_dev_put(cdw->adev); in acpi_scan_clear_dep_fn()
2237 if (adev->dep_unmet) in acpi_scan_clear_dep_queue()
2244 cdw->adev = adev; in acpi_scan_clear_dep_queue()
2245 INIT_WORK(&cdw->work, acpi_scan_clear_dep_fn); in acpi_scan_clear_dep_queue()
2251 queue_work(system_unbound_wq, &cdw->work); in acpi_scan_clear_dep_queue()
2258 struct acpi_device *adev = acpi_bus_get_acpi_device(dep->consumer); in acpi_scan_clear_dep()
2261 adev->dep_unmet--; in acpi_scan_clear_dep()
2266 list_del(&dep->node); in acpi_scan_clear_dep()
2273 * acpi_walk_dep_device_list - Apply a callback to every entry in acpi_dep_list
2274 * @handle: The ACPI handle of the supplier device
2284 static int acpi_walk_dep_device_list(acpi_handle handle, in acpi_walk_dep_device_list() argument
2293 if (dep->supplier == handle) { in acpi_walk_dep_device_list()
2305 * acpi_dev_clear_dependencies - Inform consumers that the device is now active
2308 * Clear dependencies on the given device.
2312 acpi_walk_dep_device_list(supplier->handle, acpi_scan_clear_dep, NULL); in acpi_dev_clear_dependencies()
2317 * acpi_dev_get_first_consumer_dev - Return ACPI device dependent on @supplier
2318 * @supplier: Pointer to the dependee device
2330 acpi_walk_dep_device_list(supplier->handle, in acpi_dev_get_first_consumer_dev()
2338 * acpi_bus_scan - Add ACPI device node objects in a given namespace scope.
2339 * @handle: Root of the namespace scope to scan.
2341 * Scan a given ACPI tree (probably recently hot-plugged) and create and add
2344 * If no devices were found, -ENODEV is returned, but it does not mean that
2346 * in the table trunk from which the kernel could create a device and add an
2351 int acpi_bus_scan(acpi_handle handle) in acpi_bus_scan() argument
2353 struct acpi_device *device = NULL; in acpi_bus_scan() local
2359 if (ACPI_SUCCESS(acpi_bus_check_add(handle, true, &device))) in acpi_bus_scan()
2360 acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, in acpi_bus_scan()
2362 (void **)&device); in acpi_bus_scan()
2364 if (!device) in acpi_bus_scan()
2365 return -ENODEV; in acpi_bus_scan()
2367 acpi_bus_attach(device, true); in acpi_bus_scan()
2374 device = NULL; in acpi_bus_scan()
2376 if (ACPI_SUCCESS(acpi_bus_check_add(handle, false, &device))) in acpi_bus_scan()
2377 acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, in acpi_bus_scan()
2379 (void **)&device); in acpi_bus_scan()
2381 acpi_bus_attach(device, false); in acpi_bus_scan()
2388 * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects.
2395 struct acpi_scan_handler *handler = adev->handler; in acpi_bus_trim()
2398 list_for_each_entry_reverse(child, &adev->children, node) in acpi_bus_trim()
2401 adev->flags.match_driver = false; in acpi_bus_trim()
2403 if (handler->detach) in acpi_bus_trim()
2404 handler->detach(adev); in acpi_bus_trim()
2406 adev->handler = NULL; in acpi_bus_trim()
2408 device_release_driver(&adev->dev); in acpi_bus_trim()
2411 * Most likely, the device is going away, so put it into D3cold before in acpi_bus_trim()
2415 adev->flags.initialized = false; in acpi_bus_trim()
2422 struct acpi_device *device = NULL; in acpi_bus_register_early_device() local
2425 result = acpi_add_single_object(&device, NULL, type, false); in acpi_bus_register_early_device()
2429 device->flags.match_driver = true; in acpi_bus_register_early_device()
2430 return device_attach(&device->dev); in acpi_bus_register_early_device()
2439 * Enumerate all fixed-feature devices. in acpi_bus_scan_fixed()
2442 struct acpi_device *device = NULL; in acpi_bus_scan_fixed() local
2444 result = acpi_add_single_object(&device, NULL, in acpi_bus_scan_fixed()
2449 device->flags.match_driver = true; in acpi_bus_scan_fixed()
2450 result = device_attach(&device->dev); in acpi_bus_scan_fixed()
2454 device_init_wakeup(&device->dev, true); in acpi_bus_scan_fixed()
2458 struct acpi_device *device = NULL; in acpi_bus_scan_fixed() local
2460 result = acpi_add_single_object(&device, NULL, in acpi_bus_scan_fixed()
2465 device->flags.match_driver = true; in acpi_bus_scan_fixed()
2466 result = device_attach(&device->dev); in acpi_bus_scan_fixed()
2484 spcr_uart_addr = spcr_ptr->serial_port.address; in acpi_get_spcr_uart_addr()
2515 * device in SPCR table. in acpi_scan_init()
2520 if (stao_ptr->header.length > sizeof(struct acpi_table_stao)) in acpi_scan_init()
2523 if (stao_ptr->ignore_uart) in acpi_scan_init()
2550 /* Fixed feature devices do not exist on HW-reduced platform */ in acpi_scan_init()
2554 acpi_detach_data(acpi_root->handle, in acpi_scan_init()
2578 if (!ape->subtable_valid || ape->subtable_valid(&header->common, ape)) in acpi_match_madt()
2579 if (!ape->probe_subtbl(header, end)) in acpi_match_madt()
2593 for (ape = ap_head; nr; ape++, nr--) { in __acpi_probe_device_table()
2594 if (ACPI_COMPARE_NAMESEG(ACPI_SIG_MADT, ape->id)) { in __acpi_probe_device_table()
2596 acpi_table_parse_madt(ape->type, acpi_match_madt, 0); in __acpi_probe_device_table()
2600 res = acpi_table_parse(ape->id, ape->probe_table); in __acpi_probe_device_table()