Lines Matching +full:per +full:- +full:hart
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * ACPI-WMI mapping driver
5 * Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
9 * Copyright (c) 2001-2007 Anton Altaparmakov
12 * WMI bus infrastructure by Andrew Lutomirski and Darren Hart:
37 MODULE_DESCRIPTION("ACPI-WMI Mapping Driver");
101 .name = "acpi-wmi",
122 block = &wblock->gblock; in find_guid()
124 if (guid_equal(&block->guid, &guid_input)) { in find_guid()
150 if (wdriver->id_table == NULL) in find_guid_context()
153 id = wdriver->id_table; in find_guid_context()
154 while (*id->guid_string) { in find_guid_context()
155 if (guid_parse_and_compare(id->guid_string, &wblock->gblock.guid)) in find_guid_context()
156 return id->context; in find_guid_context()
171 return -ENOENT; in get_subobj_info()
173 return -EIO; in get_subobj_info()
178 return -EIO; in get_subobj_info()
193 block = &wblock->gblock; in wmi_method_enable()
194 handle = wblock->acpi_device->handle; in wmi_method_enable()
196 snprintf(method, 5, "WE%02X", block->notify_id); in wmi_method_enable()
210 * set_required_buffer_size - Sets the buffer size needed for performing IOCTL
221 wblock->req_buf_size = length; in set_required_buffer_size()
228 * wmi_evaluate_method - Evaluate a WMI method
229 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
235 * Call an ACPI-WMI method
244 return wmidev_evaluate_method(&wblock->dev, instance, method_id, in wmi_evaluate_method()
250 * wmidev_evaluate_method - Evaluate a WMI method
257 * Call an ACPI-WMI method
271 block = &wblock->gblock; in wmidev_evaluate_method()
272 handle = wblock->acpi_device->handle; in wmidev_evaluate_method()
274 if (!(block->flags & ACPI_WMI_METHOD)) in wmidev_evaluate_method()
277 if (block->instance_count <= instance) in wmidev_evaluate_method()
290 if (block->flags & ACPI_WMI_STRING) { in wmidev_evaluate_method()
295 params[2].buffer.length = in->length; in wmidev_evaluate_method()
296 params[2].buffer.pointer = in->pointer; in wmidev_evaluate_method()
299 strncat(method, block->object_id, 2); in wmidev_evaluate_method()
321 block = &wblock->gblock; in __query_block()
322 handle = wblock->acpi_device->handle; in __query_block()
324 if (block->instance_count <= instance) in __query_block()
328 if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD)) in __query_block()
336 if (instance == 0 && wblock->read_takes_no_args) in __query_block()
343 if (block->flags & ACPI_WMI_EXPENSIVE) { in __query_block()
344 strncat(wc_method, block->object_id, 2); in __query_block()
355 strncat(method, block->object_id, 2); in __query_block()
361 * the WQxx method failed - we should disable collection anyway. in __query_block()
363 if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) { in __query_block()
378 * wmi_query_block - Return contents of a WMI block (deprecated)
379 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
383 * Return the contents of an ACPI-WMI data block to a buffer
413 * wmi_set_block - Write to a WMI block
414 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
418 * Write the contents of the input buffer to an ACPI-WMI data block
436 block = &wblock->gblock; in wmi_set_block()
437 handle = wblock->acpi_device->handle; in wmi_set_block()
439 if (block->instance_count <= instance) in wmi_set_block()
443 if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD)) in wmi_set_block()
451 if (block->flags & ACPI_WMI_STRING) { in wmi_set_block()
456 params[1].buffer.length = in->length; in wmi_set_block()
457 params[1].buffer.pointer = in->pointer; in wmi_set_block()
459 strncat(method, block->object_id, 2); in wmi_set_block()
467 pr_info("%pUL:\n", &g->guid); in wmi_dump_wdg()
468 if (g->flags & ACPI_WMI_EVENT) in wmi_dump_wdg()
469 pr_info("\tnotify_id: 0x%02X\n", g->notify_id); in wmi_dump_wdg()
471 pr_info("\tobject_id: %2pE\n", g->object_id); in wmi_dump_wdg()
472 pr_info("\tinstance_count: %d\n", g->instance_count); in wmi_dump_wdg()
473 pr_info("\tflags: %#x", g->flags); in wmi_dump_wdg()
474 if (g->flags) { in wmi_dump_wdg()
475 if (g->flags & ACPI_WMI_EXPENSIVE) in wmi_dump_wdg()
477 if (g->flags & ACPI_WMI_METHOD) in wmi_dump_wdg()
479 if (g->flags & ACPI_WMI_STRING) in wmi_dump_wdg()
481 if (g->flags & ACPI_WMI_EVENT) in wmi_dump_wdg()
506 switch(obj->type) { in wmi_notify_debug()
508 pr_cont("BUFFER_TYPE - length %d\n", obj->buffer.length); in wmi_notify_debug()
511 pr_cont("STRING_TYPE - %s\n", obj->string.pointer); in wmi_notify_debug()
514 pr_cont("INTEGER_TYPE - %llu\n", obj->integer.value); in wmi_notify_debug()
517 pr_cont("PACKAGE_TYPE - %d elements\n", obj->package.count); in wmi_notify_debug()
520 pr_cont("object type 0x%X\n", obj->type); in wmi_notify_debug()
526 * wmi_install_notify_handler - Register handler for WMI events
527 * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
531 * Register a handler for events sent to the ACPI-WMI mapper device.
549 if (guid_equal(&block->gblock.guid, &guid_input)) { in wmi_install_notify_handler()
550 if (block->handler && in wmi_install_notify_handler()
551 block->handler != wmi_notify_debug) in wmi_install_notify_handler()
554 block->handler = handler; in wmi_install_notify_handler()
555 block->handler_data = data; in wmi_install_notify_handler()
569 * wmi_uninstall_notify_handler - Unregister handler for WMI events
570 * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
572 * Unregister handler for events sent to the ACPI-WMI mapper device.
589 if (guid_equal(&block->gblock.guid, &guid_input)) { in wmi_remove_notify_handler()
590 if (!block->handler || in wmi_remove_notify_handler()
591 block->handler == wmi_notify_debug) in wmi_remove_notify_handler()
595 block->handler = wmi_notify_debug; in wmi_remove_notify_handler()
599 block->handler = NULL; in wmi_remove_notify_handler()
600 block->handler_data = NULL; in wmi_remove_notify_handler()
614 * wmi_get_event_data - Get WMI data associated with an event
617 * @out: Buffer to hold event data. out->pointer should be freed with kfree()
633 struct guid_block *gblock = &wblock->gblock; in wmi_get_event_data()
635 if ((gblock->flags & ACPI_WMI_EVENT) && in wmi_get_event_data()
636 (gblock->notify_id == event)) in wmi_get_event_data()
637 return acpi_evaluate_object(wblock->acpi_device->handle, in wmi_get_event_data()
646 * wmi_has_guid - Check if a GUID is available
647 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
658 * wmi_get_acpi_device_uid() - Get _UID name of ACPI device that defines GUID
659 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
672 return acpi_device_uid(wblock->acpi_device); in wmi_get_acpi_device_uid()
694 return sprintf(buf, "wmi:%pUL\n", &wblock->gblock.guid); in modalias_show()
703 return sprintf(buf, "%pUL\n", &wblock->gblock.guid); in guid_show()
712 return sprintf(buf, "%d\n", (int)wblock->gblock.instance_count); in instance_count_show()
722 (wblock->gblock.flags & ACPI_WMI_EXPENSIVE) != 0); in expensive_show()
740 return sprintf(buf, "%02X\n", (unsigned int)wblock->gblock.notify_id); in notify_id_show()
755 return sprintf(buf, "%c%c\n", wblock->gblock.object_id[0], in object_id_show()
756 wblock->gblock.object_id[1]); in object_id_show()
765 return sprintf(buf, "%d\n", (int)wdev->setable); in setable_show()
786 if (add_uevent_var(env, "MODALIAS=wmi:%pUL", &wblock->gblock.guid)) in wmi_dev_uevent()
787 return -ENOMEM; in wmi_dev_uevent()
789 if (add_uevent_var(env, "WMI_GUID=%pUL", &wblock->gblock.guid)) in wmi_dev_uevent()
790 return -ENOMEM; in wmi_dev_uevent()
807 const struct wmi_device_id *id = wmi_driver->id_table; in wmi_dev_match()
812 while (*id->guid_string) { in wmi_dev_match()
813 if (guid_parse_and_compare(id->guid_string, &wblock->gblock.guid)) in wmi_dev_match()
825 * inside filp->private_data in wmi_char_open()
827 struct wmi_block *wblock = container_of(filp->private_data, struct wmi_block, char_dev); in wmi_char_open()
829 filp->private_data = wblock; in wmi_char_open()
837 struct wmi_block *wblock = filp->private_data; in wmi_char_read()
840 &wblock->req_buf_size, in wmi_char_read()
841 sizeof(wblock->req_buf_size)); in wmi_char_read()
848 struct wmi_block *wblock = filp->private_data; in wmi_ioctl()
854 return -ENOTTY; in wmi_ioctl()
857 if (_IOC_NR(cmd) >= wblock->gblock.instance_count) in wmi_ioctl()
858 return -EINVAL; in wmi_ioctl()
860 mutex_lock(&wblock->char_mutex); in wmi_ioctl()
861 buf = wblock->handler_data; in wmi_ioctl()
862 if (get_user(buf->length, &input->length)) { in wmi_ioctl()
863 dev_dbg(&wblock->dev.dev, "Read length from user failed\n"); in wmi_ioctl()
864 ret = -EFAULT; in wmi_ioctl()
868 if (buf->length < wblock->req_buf_size) { in wmi_ioctl()
869 dev_err(&wblock->dev.dev, in wmi_ioctl()
871 buf->length, wblock->req_buf_size); in wmi_ioctl()
872 ret = -EINVAL; in wmi_ioctl()
876 if (buf->length > wblock->req_buf_size) in wmi_ioctl()
877 dev_warn(&wblock->dev.dev, in wmi_ioctl()
879 buf->length, wblock->req_buf_size); in wmi_ioctl()
882 if (copy_from_user(buf, input, wblock->req_buf_size)) { in wmi_ioctl()
883 dev_dbg(&wblock->dev.dev, "Copy %llu from user failed\n", in wmi_ioctl()
884 wblock->req_buf_size); in wmi_ioctl()
885 ret = -EFAULT; in wmi_ioctl()
890 wdriver = container_of(wblock->dev.dev.driver, in wmi_ioctl()
892 if (!try_module_get(wdriver->driver.owner)) { in wmi_ioctl()
893 ret = -EBUSY; in wmi_ioctl()
896 ret = wdriver->filter_callback(&wblock->dev, cmd, buf); in wmi_ioctl()
897 module_put(wdriver->driver.owner); in wmi_ioctl()
902 if (copy_to_user(input, buf, wblock->req_buf_size)) { in wmi_ioctl()
903 dev_dbg(&wblock->dev.dev, "Copy %llu to user failed\n", in wmi_ioctl()
904 wblock->req_buf_size); in wmi_ioctl()
905 ret = -EFAULT; in wmi_ioctl()
909 mutex_unlock(&wblock->char_mutex); in wmi_ioctl()
925 container_of(dev->driver, struct wmi_driver, driver); in wmi_dev_probe()
930 dev_warn(dev, "failed to enable device -- probing anyway\n"); in wmi_dev_probe()
932 if (wdriver->probe) { in wmi_dev_probe()
933 ret = wdriver->probe(dev_to_wdev(dev), in wmi_dev_probe()
940 if (wdriver->filter_callback) { in wmi_dev_probe()
942 if (!wblock->req_buf_size) { in wmi_dev_probe()
943 dev_err(&wblock->dev.dev, in wmi_dev_probe()
945 ret = -EINVAL; in wmi_dev_probe()
949 wblock->handler_data = kmalloc(wblock->req_buf_size, in wmi_dev_probe()
951 if (!wblock->handler_data) { in wmi_dev_probe()
952 ret = -ENOMEM; in wmi_dev_probe()
956 buf = kasprintf(GFP_KERNEL, "wmi/%s", wdriver->driver.name); in wmi_dev_probe()
958 ret = -ENOMEM; in wmi_dev_probe()
961 wblock->char_dev.minor = MISC_DYNAMIC_MINOR; in wmi_dev_probe()
962 wblock->char_dev.name = buf; in wmi_dev_probe()
963 wblock->char_dev.fops = &wmi_fops; in wmi_dev_probe()
964 wblock->char_dev.mode = 0444; in wmi_dev_probe()
965 ret = misc_register(&wblock->char_dev); in wmi_dev_probe()
968 ret = -ENOMEM; in wmi_dev_probe()
978 kfree(wblock->handler_data); in wmi_dev_probe()
989 container_of(dev->driver, struct wmi_driver, driver); in wmi_dev_remove()
992 if (wdriver->filter_callback) { in wmi_dev_remove()
993 misc_deregister(&wblock->char_dev); in wmi_dev_remove()
994 kfree(wblock->char_dev.name); in wmi_dev_remove()
995 kfree(wblock->handler_data); in wmi_dev_remove()
998 if (wdriver->remove) in wmi_dev_remove()
999 ret = wdriver->remove(dev_to_wdev(dev)); in wmi_dev_remove()
1046 if (wblock->gblock.flags & ACPI_WMI_EVENT) { in wmi_create_device()
1047 wblock->dev.dev.type = &wmi_type_event; in wmi_create_device()
1051 if (wblock->gblock.flags & ACPI_WMI_METHOD) { in wmi_create_device()
1052 wblock->dev.dev.type = &wmi_type_method; in wmi_create_device()
1053 mutex_init(&wblock->char_mutex); in wmi_create_device()
1059 * required per the WMI documentation. If it is not present, in wmi_create_device()
1063 strncat(method, wblock->gblock.object_id, 2); in wmi_create_device()
1064 result = get_subobj_info(device->handle, method, &info); in wmi_create_device()
1073 wblock->dev.dev.type = &wmi_type_data; in wmi_create_device()
1085 if (info->type != ACPI_TYPE_METHOD || info->param_count == 0) in wmi_create_device()
1086 wblock->read_takes_no_args = true; in wmi_create_device()
1091 strncat(method, wblock->gblock.object_id, 2); in wmi_create_device()
1092 result = get_subobj_info(device->handle, method, NULL); in wmi_create_device()
1095 wblock->dev.setable = true; in wmi_create_device()
1098 wblock->dev.dev.bus = &wmi_bus_type; in wmi_create_device()
1099 wblock->dev.dev.parent = wmi_bus_dev; in wmi_create_device()
1101 dev_set_name(&wblock->dev.dev, "%pUL", &wblock->gblock.guid); in wmi_create_device()
1103 device_initialize(&wblock->dev.dev); in wmi_create_device()
1114 if (wblock->acpi_device == device) { in wmi_free_devices()
1115 list_del(&wblock->list); in wmi_free_devices()
1116 device_unregister(&wblock->dev.dev); in wmi_free_devices()
1126 if (guid_equal(&wblock->gblock.guid, guid)) { in guid_already_parsed()
1133 dev_warn(&device->dev, "duplicate WMI GUID %pUL (first instance was on %s)\n", in guid_already_parsed()
1134 guid, dev_name(&wblock->acpi_device->dev)); in guid_already_parsed()
1155 status = acpi_evaluate_object(device->handle, "_WDG", NULL, &out); in parse_wdg()
1157 return -ENXIO; in parse_wdg()
1161 return -ENXIO; in parse_wdg()
1163 if (obj->type != ACPI_TYPE_BUFFER) { in parse_wdg()
1165 return -ENXIO; in parse_wdg()
1168 gblock = (const struct guid_block *)obj->buffer.pointer; in parse_wdg()
1169 total = obj->buffer.length / sizeof(struct guid_block); in parse_wdg()
1190 wblock->acpi_device = device; in parse_wdg()
1191 wblock->gblock = gblock[i]; in parse_wdg()
1199 list_add_tail(&wblock->list, &wmi_block_list); in parse_wdg()
1202 wblock->handler = wmi_notify_debug; in parse_wdg()
1212 if (wblock->acpi_device != device) in parse_wdg()
1215 retval = device_add(&wblock->dev.dev); in parse_wdg()
1218 &wblock->gblock.guid); in parse_wdg()
1221 list_del(&wblock->list); in parse_wdg()
1222 put_device(&wblock->dev.dev); in parse_wdg()
1261 case -EINVAL: in acpi_wmi_ec_space_handler()
1264 case -ENODEV: in acpi_wmi_ec_space_handler()
1267 case -ETIME: in acpi_wmi_ec_space_handler()
1282 struct guid_block *block = &wblock->gblock; in acpi_wmi_notify_handler()
1284 if (wblock->acpi_device->handle == handle && in acpi_wmi_notify_handler()
1285 (block->flags & ACPI_WMI_EVENT) && in acpi_wmi_notify_handler()
1286 (block->notify_id == event)) in acpi_wmi_notify_handler()
1297 if (wblock->dev.dev.driver) { in acpi_wmi_notify_handler()
1304 driver = container_of(wblock->dev.dev.driver, in acpi_wmi_notify_handler()
1312 status = acpi_evaluate_object(wblock->acpi_device->handle, in acpi_wmi_notify_handler()
1315 dev_warn(&wblock->dev.dev, in acpi_wmi_notify_handler()
1320 if (driver->notify) in acpi_wmi_notify_handler()
1321 driver->notify(&wblock->dev, in acpi_wmi_notify_handler()
1325 } else if (wblock->handler) { in acpi_wmi_notify_handler()
1327 wblock->handler(event, wblock->handler_data); in acpi_wmi_notify_handler()
1331 pr_info("DEBUG Event GUID: %pUL\n", &wblock->gblock.guid); in acpi_wmi_notify_handler()
1334 wblock->acpi_device->pnp.device_class, in acpi_wmi_notify_handler()
1335 dev_name(&wblock->dev.dev), in acpi_wmi_notify_handler()
1342 struct acpi_device *acpi_device = ACPI_COMPANION(&device->dev); in acpi_wmi_remove()
1344 acpi_remove_notify_handler(acpi_device->handle, ACPI_DEVICE_NOTIFY, in acpi_wmi_remove()
1346 acpi_remove_address_space_handler(acpi_device->handle, in acpi_wmi_remove()
1361 acpi_device = ACPI_COMPANION(&device->dev); in acpi_wmi_probe()
1363 dev_err(&device->dev, "ACPI companion is missing\n"); in acpi_wmi_probe()
1364 return -ENODEV; in acpi_wmi_probe()
1367 status = acpi_install_address_space_handler(acpi_device->handle, in acpi_wmi_probe()
1372 dev_err(&device->dev, "Error installing EC region handler\n"); in acpi_wmi_probe()
1373 return -ENODEV; in acpi_wmi_probe()
1376 status = acpi_install_notify_handler(acpi_device->handle, in acpi_wmi_probe()
1381 dev_err(&device->dev, "Error installing notify handler\n"); in acpi_wmi_probe()
1382 error = -ENODEV; in acpi_wmi_probe()
1386 wmi_bus_dev = device_create(&wmi_bus_class, &device->dev, MKDEV(0, 0), in acpi_wmi_probe()
1387 NULL, "wmi_bus-%s", dev_name(&device->dev)); in acpi_wmi_probe()
1392 dev_set_drvdata(&device->dev, wmi_bus_dev); in acpi_wmi_probe()
1406 acpi_remove_notify_handler(acpi_device->handle, ACPI_DEVICE_NOTIFY, in acpi_wmi_probe()
1410 acpi_remove_address_space_handler(acpi_device->handle, in acpi_wmi_probe()
1420 driver->driver.owner = owner; in __wmi_driver_register()
1421 driver->driver.bus = &wmi_bus_type; in __wmi_driver_register()
1423 return driver_register(&driver->driver); in __wmi_driver_register()
1429 driver_unregister(&driver->driver); in wmi_driver_unregister()
1438 return -ENODEV; in acpi_wmi_init()