1 // SPDX-License-Identifier: GPL-2.0-or-later
74 	guard(mutex)(&chip->lock);  in gpio_sim_apply_pull()
76 	if (test_bit(offset, chip->request_map) &&  in gpio_sim_apply_pull()
77 	    test_bit(offset, chip->direction_map)) {  in gpio_sim_apply_pull()
78 		if (value == !!test_bit(offset, chip->value_map))  in gpio_sim_apply_pull()
82 		 * This is fine - it just means, nobody is listening  in gpio_sim_apply_pull()
87 		irq = irq_find_mapping(chip->irq_sim, offset);  in gpio_sim_apply_pull()
104 	if (!test_bit(offset, chip->request_map) ||  in gpio_sim_apply_pull()
105 	    test_bit(offset, chip->direction_map))  in gpio_sim_apply_pull()
106 		__assign_bit(offset, chip->value_map, value);  in gpio_sim_apply_pull()
109 	__assign_bit(offset, chip->pull_map, value);  in gpio_sim_apply_pull()
117 	guard(mutex)(&chip->lock);  in gpio_sim_get()
119 	return !!test_bit(offset, chip->value_map);  in gpio_sim_get()
126 	scoped_guard(mutex, &chip->lock)  in gpio_sim_set()
127 		__assign_bit(offset, chip->value_map, value);  in gpio_sim_set()
135 	scoped_guard(mutex, &chip->lock)  in gpio_sim_get_multiple()
136 		bitmap_replace(bits, bits, chip->value_map, mask, gc->ngpio);  in gpio_sim_get_multiple()
146 	scoped_guard(mutex, &chip->lock)  in gpio_sim_set_multiple()
147 		bitmap_replace(chip->value_map, chip->value_map, bits, mask,  in gpio_sim_set_multiple()
148 			       gc->ngpio);  in gpio_sim_set_multiple()
156 	scoped_guard(mutex, &chip->lock) {  in gpio_sim_direction_output()
157 		__clear_bit(offset, chip->direction_map);  in gpio_sim_direction_output()
158 		__assign_bit(offset, chip->value_map, value);  in gpio_sim_direction_output()
168 	scoped_guard(mutex, &chip->lock)  in gpio_sim_direction_input()
169 		__set_bit(offset, chip->direction_map);  in gpio_sim_direction_input()
179 	scoped_guard(mutex, &chip->lock)  in gpio_sim_get_direction()
180 		direction = !!test_bit(offset, chip->direction_map);  in gpio_sim_get_direction()
199 	return -ENOTSUPP;  in gpio_sim_set_config()
206 	return irq_create_mapping(chip->irq_sim, offset);  in gpio_sim_to_irq()
213 	scoped_guard(mutex, &chip->lock)  in gpio_sim_request()
214 		__set_bit(offset, chip->request_map);  in gpio_sim_request()
223 	scoped_guard(mutex, &chip->lock) {  in gpio_sim_free()
224 		__assign_bit(offset, chip->value_map,  in gpio_sim_free()
225 			     !!test_bit(offset, chip->pull_map));  in gpio_sim_free()
226 		__clear_bit(offset, chip->request_map);  in gpio_sim_free()
235 	return gpiochip_lock_as_irq(&chip->gc, hwirq);  in gpio_sim_irq_requested()
243 	gpiochip_unlock_as_irq(&chip->gc, hwirq);  in gpio_sim_irq_released()
257 	guard(mutex)(&chip->lock);  in gpio_sim_dbg_show()
260 		seq_printf(seq, " gpio-%-3d (%s) %s,%s\n",  in gpio_sim_dbg_show()
261 			   gc->base + i,  in gpio_sim_dbg_show()
263 			   test_bit(i, chip->direction_map) ? "input" :  in gpio_sim_dbg_show()
264 				test_bit(i, chip->value_map) ? "output-high" :  in gpio_sim_dbg_show()
265 							       "output-low",  in gpio_sim_dbg_show()
266 			   test_bit(i, chip->pull_map) ? "pull-up" :  in gpio_sim_dbg_show()
267 							 "pull-down");  in gpio_sim_dbg_show()
277 	scoped_guard(mutex, &chip->lock)  in gpio_sim_sysfs_val_show()
278 		val = !!test_bit(line_attr->offset, chip->value_map);  in gpio_sim_sysfs_val_show()
288 	 * Not assigning this function will result in write() returning -EIO  in gpio_sim_sysfs_val_store()
289 	 * which is confusing. Return -EPERM explicitly.  in gpio_sim_sysfs_val_store()
291 	return -EPERM;  in gpio_sim_sysfs_val_store()
295 	[0]	= "pull-down",
296 	[1]	= "pull-up",
307 	scoped_guard(mutex, &chip->lock)  in gpio_sim_sysfs_pull_show()
308 		pull = !!test_bit(line_attr->offset, chip->pull_map);  in gpio_sim_sysfs_pull_show()
325 	ret = gpio_sim_apply_pull(chip, line_attr->offset, pull);  in gpio_sim_sysfs_pull_store()
344 	for (i = 0; i < chip->gc.ngpio; i++)  in gpio_sim_dispose_mappings()
345 		irq_dispose_mapping(irq_find_mapping(chip->irq_sim, i));  in gpio_sim_dispose_mappings()
352 	sysfs_remove_groups(&chip->dev->kobj, chip->attr_groups);  in gpio_sim_sysfs_remove()
359 	unsigned int num_lines = chip->gc.ngpio;  in gpio_sim_setup_sysfs()
360 	struct device *dev = chip->gc.parent;  in gpio_sim_setup_sysfs()
365 	chip->attr_groups = devm_kcalloc(dev, sizeof(*chip->attr_groups),  in gpio_sim_setup_sysfs()
367 	if (!chip->attr_groups)  in gpio_sim_setup_sysfs()
368 		return -ENOMEM;  in gpio_sim_setup_sysfs()
377 			return -ENOMEM;  in gpio_sim_setup_sysfs()
379 		attr_group->name = devm_kasprintf(dev, GFP_KERNEL,  in gpio_sim_setup_sysfs()
381 		if (!attr_group->name)  in gpio_sim_setup_sysfs()
382 			return -ENOMEM;  in gpio_sim_setup_sysfs()
384 		val_attr->offset = pull_attr->offset = i;  in gpio_sim_setup_sysfs()
386 		val_dev_attr = &val_attr->dev_attr;  in gpio_sim_setup_sysfs()
387 		pull_dev_attr = &pull_attr->dev_attr;  in gpio_sim_setup_sysfs()
389 		sysfs_attr_init(&val_dev_attr->attr);  in gpio_sim_setup_sysfs()
390 		sysfs_attr_init(&pull_dev_attr->attr);  in gpio_sim_setup_sysfs()
392 		val_dev_attr->attr.name = "value";  in gpio_sim_setup_sysfs()
393 		pull_dev_attr->attr.name = "pull";  in gpio_sim_setup_sysfs()
395 		val_dev_attr->attr.mode = pull_dev_attr->attr.mode = 0644;  in gpio_sim_setup_sysfs()
397 		val_dev_attr->show = gpio_sim_sysfs_val_show;  in gpio_sim_setup_sysfs()
398 		val_dev_attr->store = gpio_sim_sysfs_val_store;  in gpio_sim_setup_sysfs()
399 		pull_dev_attr->show = gpio_sim_sysfs_pull_show;  in gpio_sim_setup_sysfs()
400 		pull_dev_attr->store = gpio_sim_sysfs_pull_store;  in gpio_sim_setup_sysfs()
402 		attrs[0] = &val_dev_attr->attr;  in gpio_sim_setup_sysfs()
403 		attrs[1] = &pull_dev_attr->attr;  in gpio_sim_setup_sysfs()
405 		attr_group->attrs = attrs;  in gpio_sim_setup_sysfs()
406 		chip->attr_groups[i] = attr_group;  in gpio_sim_setup_sysfs()
409 	ret = sysfs_create_groups(&chip->dev->kobj, chip->attr_groups);  in gpio_sim_setup_sysfs()
434 		return -ERANGE;  in gpio_sim_add_bank()
436 	ret = fwnode_property_read_string(swnode, "gpio-sim,label", &label);  in gpio_sim_add_bank()
441 			return -ENOMEM;  in gpio_sim_add_bank()
446 		return -ENOMEM;  in gpio_sim_add_bank()
448 	chip->request_map = devm_bitmap_zalloc(dev, num_lines, GFP_KERNEL);  in gpio_sim_add_bank()
449 	if (!chip->request_map)  in gpio_sim_add_bank()
450 		return -ENOMEM;  in gpio_sim_add_bank()
452 	chip->direction_map = devm_bitmap_alloc(dev, num_lines, GFP_KERNEL);  in gpio_sim_add_bank()
453 	if (!chip->direction_map)  in gpio_sim_add_bank()
454 		return -ENOMEM;  in gpio_sim_add_bank()
457 	bitmap_fill(chip->direction_map, num_lines);  in gpio_sim_add_bank()
459 	chip->value_map = devm_bitmap_zalloc(dev, num_lines, GFP_KERNEL);  in gpio_sim_add_bank()
460 	if (!chip->value_map)  in gpio_sim_add_bank()
461 		return -ENOMEM;  in gpio_sim_add_bank()
463 	chip->pull_map = devm_bitmap_zalloc(dev, num_lines, GFP_KERNEL);  in gpio_sim_add_bank()
464 	if (!chip->pull_map)  in gpio_sim_add_bank()
465 		return -ENOMEM;  in gpio_sim_add_bank()
467 	chip->irq_sim = devm_irq_domain_create_sim_full(dev, swnode, num_lines,  in gpio_sim_add_bank()
470 	if (IS_ERR(chip->irq_sim))  in gpio_sim_add_bank()
471 		return PTR_ERR(chip->irq_sim);  in gpio_sim_add_bank()
477 	ret = devm_mutex_init(dev, &chip->lock);  in gpio_sim_add_bank()
481 	gc = &chip->gc;  in gpio_sim_add_bank()
482 	gc->base = -1;  in gpio_sim_add_bank()
483 	gc->ngpio = num_lines;  in gpio_sim_add_bank()
484 	gc->label = label;  in gpio_sim_add_bank()
485 	gc->owner = THIS_MODULE;  in gpio_sim_add_bank()
486 	gc->parent = dev;  in gpio_sim_add_bank()
487 	gc->fwnode = swnode;  in gpio_sim_add_bank()
488 	gc->get = gpio_sim_get;  in gpio_sim_add_bank()
489 	gc->set = gpio_sim_set;  in gpio_sim_add_bank()
490 	gc->get_multiple = gpio_sim_get_multiple;  in gpio_sim_add_bank()
491 	gc->set_multiple = gpio_sim_set_multiple;  in gpio_sim_add_bank()
492 	gc->direction_output = gpio_sim_direction_output;  in gpio_sim_add_bank()
493 	gc->direction_input = gpio_sim_direction_input;  in gpio_sim_add_bank()
494 	gc->get_direction = gpio_sim_get_direction;  in gpio_sim_add_bank()
495 	gc->set_config = gpio_sim_set_config;  in gpio_sim_add_bank()
496 	gc->to_irq = gpio_sim_to_irq;  in gpio_sim_add_bank()
497 	gc->request = gpio_sim_request;  in gpio_sim_add_bank()
498 	gc->free = gpio_sim_free;  in gpio_sim_add_bank()
499 	gc->dbg_show = PTR_IF(IS_ENABLED(CONFIG_DEBUG_FS), gpio_sim_dbg_show);  in gpio_sim_add_bank()
500 	gc->can_sleep = true;  in gpio_sim_add_bank()
506 	chip->dev = device_find_child(dev, swnode, gpio_sim_dev_match_fwnode);  in gpio_sim_add_bank()
507 	if (!chip->dev)  in gpio_sim_add_bank()
508 		return -ENODEV;  in gpio_sim_add_bank()
510 	ret = devm_add_action_or_reset(dev, gpio_sim_put_device, chip->dev);  in gpio_sim_add_bank()
515 	dev_set_drvdata(chip->dev, chip);  in gpio_sim_add_bank()
522 	struct device *dev = &pdev->dev;  in gpio_sim_probe()
538 	{ .compatible = "gpio-simulator" },
545 		.name = "gpio-sim",
575 	 * and notify the user-space about any errors.
586 /* This is called with dev->lock already taken. */
596 	snprintf(devname, sizeof(devname), "gpio-sim.%u", simdev->id);  in gpio_sim_bus_notifier_call()
602 		simdev->driver_bound = true;  in gpio_sim_bus_notifier_call()
604 		simdev->driver_bound = false;  in gpio_sim_bus_notifier_call()
608 	complete(&simdev->probe_completion);  in gpio_sim_bus_notifier_call()
656 	return bank->label && *bank->label;  in gpio_sim_bank_has_label()
662 	return bank->parent;  in gpio_sim_bank_get_device()
676 	/* There can only be one hog per line. */
677 	struct gpio_sim_hog *hog;  member
690 	struct gpio_sim_bank *bank = line->parent;  in gpio_sim_line_get_device()
708 static struct gpio_sim_device *gpio_sim_hog_get_device(struct gpio_sim_hog *hog)  in gpio_sim_hog_get_device()  argument
710 	struct gpio_sim_line *line = hog->parent;  in gpio_sim_hog_get_device()
717 	lockdep_assert_held(&dev->lock);  in gpio_sim_device_is_live()
719 	return !!dev->pdev;  in gpio_sim_device_is_live()
739 	guard(mutex)(&dev->lock);  in gpio_sim_device_config_dev_name_show()
741 	pdev = dev->pdev;  in gpio_sim_device_config_dev_name_show()
743 		return sprintf(page, "%s\n", dev_name(&pdev->dev));  in gpio_sim_device_config_dev_name_show()
745 	return sprintf(page, "gpio-sim.%d\n", dev->id);  in gpio_sim_device_config_dev_name_show()
756 	scoped_guard(mutex, &dev->lock)  in gpio_sim_device_config_live_show()
767 	list_for_each_entry(line, &bank->line_list, siblings) {  in gpio_sim_get_line_names_size()
768 		if (!line->name || (line->offset >= bank->num_lines))  in gpio_sim_get_line_names_size()
771 		size = max(size, line->offset + 1);  in gpio_sim_get_line_names_size()
782 	list_for_each_entry(line, &bank->line_list, siblings) {  in gpio_sim_set_line_names()
783 		if (!line->name || (line->offset >= bank->num_lines))  in gpio_sim_set_line_names()
786 		line_names[line->offset] = line->name;  in gpio_sim_set_line_names()
792 	struct gpiod_hog *hog;  in gpio_sim_remove_hogs()  local
794 	if (!dev->hogs)  in gpio_sim_remove_hogs()
797 	gpiod_remove_hogs(dev->hogs);  in gpio_sim_remove_hogs()
799 	for (hog = dev->hogs; hog->chip_label; hog++) {  in gpio_sim_remove_hogs()
800 		kfree(hog->chip_label);  in gpio_sim_remove_hogs()
801 		kfree(hog->line_name);  in gpio_sim_remove_hogs()
804 	kfree(dev->hogs);  in gpio_sim_remove_hogs()
805 	dev->hogs = NULL;  in gpio_sim_remove_hogs()
813 	struct gpiod_hog *hog;  in gpio_sim_add_hogs()  local
815 	list_for_each_entry(bank, &dev->bank_list, siblings) {  in gpio_sim_add_hogs()
816 		list_for_each_entry(line, &bank->line_list, siblings) {  in gpio_sim_add_hogs()
817 			if (line->offset >= bank->num_lines)  in gpio_sim_add_hogs()
820 			if (line->hog)  in gpio_sim_add_hogs()
829 	dev->hogs = kcalloc(num_hogs + 1, sizeof(*dev->hogs), GFP_KERNEL);  in gpio_sim_add_hogs()
830 	if (!dev->hogs)  in gpio_sim_add_hogs()
831 		return -ENOMEM;  in gpio_sim_add_hogs()
833 	list_for_each_entry(bank, &dev->bank_list, siblings) {  in gpio_sim_add_hogs()
834 		list_for_each_entry(line, &bank->line_list, siblings) {  in gpio_sim_add_hogs()
835 			if (line->offset >= bank->num_lines)  in gpio_sim_add_hogs()
838 			if (!line->hog)  in gpio_sim_add_hogs()
841 			hog = &dev->hogs[idx++];  in gpio_sim_add_hogs()
849 				hog->chip_label = kstrdup(bank->label,  in gpio_sim_add_hogs()
852 				hog->chip_label = kasprintf(GFP_KERNEL,  in gpio_sim_add_hogs()
853 							"gpio-sim.%u:%pfwP",  in gpio_sim_add_hogs()
854 							dev->id,  in gpio_sim_add_hogs()
855 							bank->swnode);  in gpio_sim_add_hogs()
856 			if (!hog->chip_label) {  in gpio_sim_add_hogs()
858 				return -ENOMEM;  in gpio_sim_add_hogs()
862 			 * We need to duplicate this because the hog config  in gpio_sim_add_hogs()
864 			 * it) and gpiolib doesn't make a deep copy of the hog  in gpio_sim_add_hogs()
867 			if (line->hog->name) {  in gpio_sim_add_hogs()
868 				hog->line_name = kstrdup(line->hog->name,  in gpio_sim_add_hogs()
870 				if (!hog->line_name) {  in gpio_sim_add_hogs()
872 					return -ENOMEM;  in gpio_sim_add_hogs()
876 			hog->chip_hwnum = line->offset;  in gpio_sim_add_hogs()
877 			hog->dflags = line->hog->dir;  in gpio_sim_add_hogs()
881 	gpiod_add_hogs(dev->hogs);  in gpio_sim_add_hogs()
896 	properties[prop_idx++] = PROPERTY_ENTRY_U32("ngpios", bank->num_lines);  in gpio_sim_make_bank_swnode()
899 		properties[prop_idx++] = PROPERTY_ENTRY_STRING("gpio-sim,label",  in gpio_sim_make_bank_swnode()
900 							       bank->label);  in gpio_sim_make_bank_swnode()
907 			return ERR_PTR(-ENOMEM);  in gpio_sim_make_bank_swnode()
912 						"gpio-line-names",  in gpio_sim_make_bank_swnode()
933 	list_for_each_entry(this, &dev->bank_list, siblings) {  in gpio_sim_bank_labels_non_unique()
934 		list_for_each_entry(pos, &dev->bank_list, siblings) {  in gpio_sim_bank_labels_non_unique()
935 			if (this == pos || (!this->label || !pos->label))  in gpio_sim_bank_labels_non_unique()
938 			if (strcmp(this->label, pos->label) == 0)  in gpio_sim_bank_labels_non_unique()
954 	lockdep_assert_held(&dev->lock);  in gpio_sim_device_activate()
956 	if (list_empty(&dev->bank_list))  in gpio_sim_device_activate()
957 		return -ENODATA;  in gpio_sim_device_activate()
960 	 * Non-unique GPIO device labels are a corner-case we don't support  in gpio_sim_device_activate()
965 		return -EINVAL;  in gpio_sim_device_activate()
973 	list_for_each_entry(bank, &dev->bank_list, siblings) {  in gpio_sim_device_activate()
974 		bank->swnode = gpio_sim_make_bank_swnode(bank, swnode);  in gpio_sim_device_activate()
975 		if (IS_ERR(bank->swnode)) {  in gpio_sim_device_activate()
976 			ret = PTR_ERR(bank->swnode);  in gpio_sim_device_activate()
988 	pdevinfo.name = "gpio-sim";  in gpio_sim_device_activate()
990 	pdevinfo.id = dev->id;  in gpio_sim_device_activate()
992 	reinit_completion(&dev->probe_completion);  in gpio_sim_device_activate()
993 	dev->driver_bound = false;  in gpio_sim_device_activate()
994 	bus_register_notifier(&platform_bus_type, &dev->bus_notifier);  in gpio_sim_device_activate()
998 		bus_unregister_notifier(&platform_bus_type, &dev->bus_notifier);  in gpio_sim_device_activate()
1004 	wait_for_completion(&dev->probe_completion);  in gpio_sim_device_activate()
1005 	bus_unregister_notifier(&platform_bus_type, &dev->bus_notifier);  in gpio_sim_device_activate()
1007 	if (!dev->driver_bound) {  in gpio_sim_device_activate()
1012 		return -ENXIO;  in gpio_sim_device_activate()
1015 	dev->pdev = pdev;  in gpio_sim_device_activate()
1024 	lockdep_assert_held(&dev->lock);  in gpio_sim_device_deactivate()
1026 	swnode = dev_fwnode(&dev->pdev->dev);  in gpio_sim_device_deactivate()
1027 	platform_device_unregister(dev->pdev);  in gpio_sim_device_deactivate()
1030 	dev->pdev = NULL;  in gpio_sim_device_deactivate()
1045 	guard(mutex)(&dev->lock);  in gpio_sim_device_config_live_store()
1048 		ret = -EPERM;  in gpio_sim_device_config_live_store()
1075 	if (dev->class)  in gpio_sim_emit_chip_name()
1078 	if (device_match_fwnode(dev, ctx->swnode))  in gpio_sim_emit_chip_name()
1079 		return sprintf(ctx->page, "%s\n", dev_name(dev));  in gpio_sim_emit_chip_name()
1089 	struct gpio_sim_chip_name_ctx ctx = { bank->swnode, page };  in gpio_sim_bank_config_chip_name_show()
1091 	guard(mutex)(&dev->lock);  in gpio_sim_bank_config_chip_name_show()
1094 		return device_for_each_child(&dev->pdev->dev, &ctx,  in gpio_sim_bank_config_chip_name_show()
1108 	guard(mutex)(&dev->lock);  in gpio_sim_bank_config_label_show()
1110 	return sprintf(page, "%s\n", bank->label ?: "");  in gpio_sim_bank_config_label_show()
1120 	guard(mutex)(&dev->lock);  in gpio_sim_bank_config_label_store()
1123 		return -EBUSY;  in gpio_sim_bank_config_label_store()
1127 		return -ENOMEM;  in gpio_sim_bank_config_label_store()
1129 	kfree(bank->label);  in gpio_sim_bank_config_label_store()
1130 	bank->label = trimmed;  in gpio_sim_bank_config_label_store()
1143 	guard(mutex)(&dev->lock);  in gpio_sim_bank_config_num_lines_show()
1145 	return sprintf(page, "%u\n", bank->num_lines);  in gpio_sim_bank_config_num_lines_show()
1162 		return -EINVAL;  in gpio_sim_bank_config_num_lines_store()
1164 	guard(mutex)(&dev->lock);  in gpio_sim_bank_config_num_lines_store()
1167 		return -EBUSY;  in gpio_sim_bank_config_num_lines_store()
1169 	bank->num_lines = num_lines;  in gpio_sim_bank_config_num_lines_store()
1189 	guard(mutex)(&dev->lock);  in gpio_sim_line_config_name_show()
1191 	return sprintf(page, "%s\n", line->name ?: "");  in gpio_sim_line_config_name_show()
1201 	guard(mutex)(&dev->lock);  in gpio_sim_line_config_name_store()
1204 		return -EBUSY;  in gpio_sim_line_config_name_store()
1208 		return -ENOMEM;  in gpio_sim_line_config_name_store()
1210 	kfree(line->name);  in gpio_sim_line_config_name_store()
1211 	line->name = trimmed;  in gpio_sim_line_config_name_store()
1226 	struct gpio_sim_hog *hog = to_gpio_sim_hog(item);  in gpio_sim_hog_config_name_show()  local
1227 	struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog);  in gpio_sim_hog_config_name_show()
1229 	guard(mutex)(&dev->lock);  in gpio_sim_hog_config_name_show()
1231 	return sprintf(page, "%s\n", hog->name ?: "");  in gpio_sim_hog_config_name_show()
1237 	struct gpio_sim_hog *hog = to_gpio_sim_hog(item);  in gpio_sim_hog_config_name_store()  local
1238 	struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog);  in gpio_sim_hog_config_name_store()
1241 	guard(mutex)(&dev->lock);  in gpio_sim_hog_config_name_store()
1244 		return -EBUSY;  in gpio_sim_hog_config_name_store()
1248 		return -ENOMEM;  in gpio_sim_hog_config_name_store()
1250 	kfree(hog->name);  in gpio_sim_hog_config_name_store()
1251 	hog->name = trimmed;  in gpio_sim_hog_config_name_store()
1261 	struct gpio_sim_hog *hog = to_gpio_sim_hog(item);  in gpio_sim_hog_config_direction_show()  local
1262 	struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog);  in gpio_sim_hog_config_direction_show()
1266 	scoped_guard(mutex, &dev->lock)  in gpio_sim_hog_config_direction_show()
1267 		dir = hog->dir;  in gpio_sim_hog_config_direction_show()
1274 		repr = "output-high";  in gpio_sim_hog_config_direction_show()
1277 		repr = "output-low";  in gpio_sim_hog_config_direction_show()
1281 		WARN(1, "Unexpected hog direction value: %d", dir);  in gpio_sim_hog_config_direction_show()
1282 		return -EINVAL;  in gpio_sim_hog_config_direction_show()
1292 	struct gpio_sim_hog *hog = to_gpio_sim_hog(item);  in gpio_sim_hog_config_direction_store()  local
1293 	struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog);  in gpio_sim_hog_config_direction_store()
1296 	guard(mutex)(&dev->lock);  in gpio_sim_hog_config_direction_store()
1299 		return -EBUSY;  in gpio_sim_hog_config_direction_store()
1303 	else if (sysfs_streq(page, "output-high"))  in gpio_sim_hog_config_direction_store()
1305 	else if (sysfs_streq(page, "output-low"))  in gpio_sim_hog_config_direction_store()
1308 		return -EINVAL;  in gpio_sim_hog_config_direction_store()
1310 	hog->dir = dir;  in gpio_sim_hog_config_direction_store()
1325 	struct gpio_sim_hog *hog = to_gpio_sim_hog(item);  in gpio_sim_hog_config_item_release()  local
1326 	struct gpio_sim_line *line = hog->parent;  in gpio_sim_hog_config_item_release()
1327 	struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog);  in gpio_sim_hog_config_item_release()
1329 	scoped_guard(mutex, &dev->lock)  in gpio_sim_hog_config_item_release()
1330 		line->hog = NULL;  in gpio_sim_hog_config_item_release()
1332 	kfree(hog->name);  in gpio_sim_hog_config_item_release()
1333 	kfree(hog);  in gpio_sim_hog_config_item_release()
1349 	struct gpio_sim_line *line = to_gpio_sim_line(&group->cg_item);  in gpio_sim_line_config_make_hog_item()
1351 	struct gpio_sim_hog *hog;  in gpio_sim_line_config_make_hog_item()  local
1353 	if (strcmp(name, "hog") != 0)  in gpio_sim_line_config_make_hog_item()
1354 		return ERR_PTR(-EINVAL);  in gpio_sim_line_config_make_hog_item()
1356 	guard(mutex)(&dev->lock);  in gpio_sim_line_config_make_hog_item()
1358 	hog = kzalloc(sizeof(*hog), GFP_KERNEL);  in gpio_sim_line_config_make_hog_item()
1359 	if (!hog)  in gpio_sim_line_config_make_hog_item()
1360 		return ERR_PTR(-ENOMEM);  in gpio_sim_line_config_make_hog_item()
1362 	config_item_init_type_name(&hog->item, name,  in gpio_sim_line_config_make_hog_item()
1365 	hog->dir = GPIOD_IN;  in gpio_sim_line_config_make_hog_item()
1366 	hog->name = NULL;  in gpio_sim_line_config_make_hog_item()
1367 	hog->parent = line;  in gpio_sim_line_config_make_hog_item()
1368 	line->hog = hog;  in gpio_sim_line_config_make_hog_item()
1370 	return &hog->item;  in gpio_sim_line_config_make_hog_item()
1378 	scoped_guard(mutex, &dev->lock)  in gpio_sim_line_config_group_release()
1379 		list_del(&line->siblings);  in gpio_sim_line_config_group_release()
1381 	kfree(line->name);  in gpio_sim_line_config_group_release()
1404 	struct gpio_sim_bank *bank = to_gpio_sim_bank(&group->cg_item);  in gpio_sim_bank_config_make_line_group()
1412 		return ERR_PTR(-EINVAL);  in gpio_sim_bank_config_make_line_group()
1414 	guard(mutex)(&dev->lock);  in gpio_sim_bank_config_make_line_group()
1417 		return ERR_PTR(-EBUSY);  in gpio_sim_bank_config_make_line_group()
1421 		return ERR_PTR(-ENOMEM);  in gpio_sim_bank_config_make_line_group()
1423 	config_group_init_type_name(&line->group, name,  in gpio_sim_bank_config_make_line_group()
1426 	line->parent = bank;  in gpio_sim_bank_config_make_line_group()
1427 	line->offset = offset;  in gpio_sim_bank_config_make_line_group()
1428 	list_add_tail(&line->siblings, &bank->line_list);  in gpio_sim_bank_config_make_line_group()
1430 	return &line->group;  in gpio_sim_bank_config_make_line_group()
1438 	scoped_guard(mutex, &dev->lock)  in gpio_sim_bank_config_group_release()
1439 		list_del(&bank->siblings);  in gpio_sim_bank_config_group_release()
1441 	kfree(bank->label);  in gpio_sim_bank_config_group_release()
1464 	struct gpio_sim_device *dev = to_gpio_sim_device(&group->cg_item);  in gpio_sim_device_config_make_bank_group()
1467 	guard(mutex)(&dev->lock);  in gpio_sim_device_config_make_bank_group()
1470 		return ERR_PTR(-EBUSY);  in gpio_sim_device_config_make_bank_group()
1474 		return ERR_PTR(-ENOMEM);  in gpio_sim_device_config_make_bank_group()
1476 	config_group_init_type_name(&bank->group, name,  in gpio_sim_device_config_make_bank_group()
1478 	bank->num_lines = 1;  in gpio_sim_device_config_make_bank_group()
1479 	bank->parent = dev;  in gpio_sim_device_config_make_bank_group()
1480 	INIT_LIST_HEAD(&bank->line_list);  in gpio_sim_device_config_make_bank_group()
1481 	list_add_tail(&bank->siblings, &dev->bank_list);  in gpio_sim_device_config_make_bank_group()
1483 	return &bank->group;  in gpio_sim_device_config_make_bank_group()
1490 	scoped_guard(mutex, &dev->lock) {  in gpio_sim_device_config_group_release()
1495 	mutex_destroy(&dev->lock);  in gpio_sim_device_config_group_release()
1496 	ida_free(&gpio_sim_ida, dev->id);  in gpio_sim_device_config_group_release()
1523 		return ERR_PTR(-ENOMEM);  in gpio_sim_config_make_device_group()
1529 	config_group_init_type_name(&dev->group, name,  in gpio_sim_config_make_device_group()
1531 	dev->id = id;  in gpio_sim_config_make_device_group()
1532 	mutex_init(&dev->lock);  in gpio_sim_config_make_device_group()
1533 	INIT_LIST_HEAD(&dev->bank_list);  in gpio_sim_config_make_device_group()
1535 	dev->bus_notifier.notifier_call = gpio_sim_bus_notifier_call;  in gpio_sim_config_make_device_group()
1536 	init_completion(&dev->probe_completion);  in gpio_sim_config_make_device_group()
1538 	return &no_free_ptr(dev)->group;  in gpio_sim_config_make_device_group()
1553 			.ci_namebuf	= "gpio-sim",