85 static int check_mutually_exclusive(struct extcon_dev *edev, u32 new_state)  in check_mutually_exclusive()  argument
89 	if (!edev->mutually_exclusive)  in check_mutually_exclusive()
92 	for (i = 0; edev->mutually_exclusive[i]; i++) {  in check_mutually_exclusive()
94 		u32 correspondants = new_state & edev->mutually_exclusive[i];  in check_mutually_exclusive()
109 	struct extcon_dev *edev = dev_get_drvdata(dev);  in state_show()  local
111 	if (edev->print_state) {  in state_show()
112 		int ret = edev->print_state(edev, buf);  in state_show()
119 	if (edev->max_supported == 0)  in state_show()
120 		return sprintf(buf, "%u\n", edev->state);  in state_show()
123 		if (!edev->supported_cable[i])  in state_show()
126 				 edev->supported_cable[i],  in state_show()
127 				 !!(edev->state & (1 << i)));  in state_show()
138 	struct extcon_dev *edev = dev_get_drvdata(dev);  in state_store()  local
144 		ret = extcon_set_state(edev, state);  in state_store()
156 	struct extcon_dev *edev = dev_get_drvdata(dev);  in name_show()  local
159 	if (edev->print_name) {  in name_show()
160 		int ret = edev->print_name(edev, buf);  in name_show()
166 	return sprintf(buf, "%s\n", dev_name(&edev->dev));  in name_show()
177 		       cable->edev->supported_cable[cable->cable_index]);  in cable_name_show()
187 		       extcon_get_cable_state_(cable->edev,  in cable_state_show()
206 int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)  in extcon_update_state()  argument
216 	spin_lock_irqsave(&edev->lock, flags);  in extcon_update_state()
218 	if (edev->state != ((edev->state & ~mask) | (state & mask))) {  in extcon_update_state()
219 		u32 old_state = edev->state;  in extcon_update_state()
221 		if (check_mutually_exclusive(edev, (edev->state & ~mask) |  in extcon_update_state()
223 			spin_unlock_irqrestore(&edev->lock, flags);  in extcon_update_state()
227 		edev->state &= ~mask;  in extcon_update_state()
228 		edev->state |= state & mask;  in extcon_update_state()
230 		raw_notifier_call_chain(&edev->nh, old_state, edev);  in extcon_update_state()
234 			length = name_show(&edev->dev, NULL, prop_buf);  in extcon_update_state()
242 			length = state_show(&edev->dev, NULL, prop_buf);  in extcon_update_state()
252 			spin_unlock_irqrestore(&edev->lock, flags);  in extcon_update_state()
254 			kobject_uevent_env(&edev->dev.kobj, KOBJ_CHANGE, envp);  in extcon_update_state()
258 			spin_unlock_irqrestore(&edev->lock, flags);  in extcon_update_state()
260 			dev_err(&edev->dev, "out of memory in extcon_set_state\n");  in extcon_update_state()
261 			kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);  in extcon_update_state()
265 		spin_unlock_irqrestore(&edev->lock, flags);  in extcon_update_state()
280 int extcon_set_state(struct extcon_dev *edev, u32 state)  in extcon_set_state()  argument
282 	return extcon_update_state(edev, 0xffffffff, state);  in extcon_set_state()
296 int extcon_find_cable_index(struct extcon_dev *edev, const char *cable_name)  in extcon_find_cable_index()  argument
300 	if (edev->supported_cable) {  in extcon_find_cable_index()
301 		for (i = 0; edev->supported_cable[i]; i++) {  in extcon_find_cable_index()
302 			if (!strncmp(edev->supported_cable[i],  in extcon_find_cable_index()
317 int extcon_get_cable_state_(struct extcon_dev *edev, int index)  in extcon_get_cable_state_()  argument
319 	if (index < 0 || (edev->max_supported && edev->max_supported <= index))  in extcon_get_cable_state_()
322 	return !!(edev->state & (1 << index));  in extcon_get_cable_state_()
333 int extcon_get_cable_state(struct extcon_dev *edev, const char *cable_name)  in extcon_get_cable_state()  argument
335 	return extcon_get_cable_state_(edev, extcon_find_cable_index  in extcon_get_cable_state()
336 						(edev, cable_name));  in extcon_get_cable_state()
348 int extcon_set_cable_state_(struct extcon_dev *edev,  in extcon_set_cable_state_()  argument
353 	if (index < 0 || (edev->max_supported && edev->max_supported <= index))  in extcon_set_cable_state_()
357 	return extcon_update_state(edev, 1 << index, state);  in extcon_set_cable_state_()
370 int extcon_set_cable_state(struct extcon_dev *edev,  in extcon_set_cable_state()  argument
373 	return extcon_set_cable_state_(edev, extcon_find_cable_index  in extcon_set_cable_state()
374 					(edev, cable_name), cable_state);  in extcon_set_cable_state()
403 	struct extcon_dev *edev = ptr;  in _call_per_cable()  local
406 	    (edev->state & (1 << obj->cable_index))) {  in _call_per_cable()
455 		obj->edev = extcon_get_extcon_dev(extcon_name);  in extcon_register_interest()
456 		if (!obj->edev)  in extcon_register_interest()
459 		obj->cable_index = extcon_find_cable_index(obj->edev,  in extcon_register_interest()
468 		spin_lock_irqsave(&obj->edev->lock, flags);  in extcon_register_interest()
469 		ret = raw_notifier_chain_register(&obj->edev->nh,  in extcon_register_interest()
471 		spin_unlock_irqrestore(&obj->edev->lock, flags);  in extcon_register_interest()
511 	spin_lock_irqsave(&obj->edev->lock, flags);  in extcon_unregister_interest()
512 	ret = raw_notifier_chain_unregister(&obj->edev->nh, &obj->internal_nb);  in extcon_unregister_interest()
513 	spin_unlock_irqrestore(&obj->edev->lock, flags);  in extcon_unregister_interest()
529 int extcon_register_notifier(struct extcon_dev *edev,  in extcon_register_notifier()  argument
535 	spin_lock_irqsave(&edev->lock, flags);  in extcon_register_notifier()
536 	ret = raw_notifier_chain_register(&edev->nh, nb);  in extcon_register_notifier()
537 	spin_unlock_irqrestore(&edev->lock, flags);  in extcon_register_notifier()
548 int extcon_unregister_notifier(struct extcon_dev *edev,  in extcon_unregister_notifier()  argument
554 	spin_lock_irqsave(&edev->lock, flags);  in extcon_unregister_notifier()
555 	ret = raw_notifier_chain_unregister(&edev->nh, nb);  in extcon_unregister_notifier()
556 	spin_unlock_irqrestore(&edev->lock, flags);  in extcon_unregister_notifier()
610 	struct extcon_dev *edev;  in extcon_dev_allocate()  local
612 	edev = kzalloc(sizeof(*edev), GFP_KERNEL);  in extcon_dev_allocate()
613 	if (!edev)  in extcon_dev_allocate()
616 	edev->max_supported = 0;  in extcon_dev_allocate()
617 	edev->supported_cable = supported_cable;  in extcon_dev_allocate()
619 	return edev;  in extcon_dev_allocate()
626 void extcon_dev_free(struct extcon_dev *edev)  in extcon_dev_free()  argument
628 	kfree(edev);  in extcon_dev_free()
664 	struct extcon_dev **ptr, *edev;  in devm_extcon_dev_allocate()  local
670 	edev = extcon_dev_allocate(supported_cable);  in devm_extcon_dev_allocate()
671 	if (IS_ERR(edev)) {  in devm_extcon_dev_allocate()
673 		return edev;  in devm_extcon_dev_allocate()
676 	edev->dev.parent = dev;  in devm_extcon_dev_allocate()
678 	*ptr = edev;  in devm_extcon_dev_allocate()
681 	return edev;  in devm_extcon_dev_allocate()
685 void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev)  in devm_extcon_dev_free()  argument
688 			       devm_extcon_dev_match, edev));  in devm_extcon_dev_free()
701 int extcon_dev_register(struct extcon_dev *edev)  in extcon_dev_register()  argument
711 	if (edev->supported_cable) {  in extcon_dev_register()
713 		for (index = 0; edev->supported_cable[index]; index++)  in extcon_dev_register()
715 		edev->max_supported = index;  in extcon_dev_register()
717 		edev->max_supported = 0;  in extcon_dev_register()
721 		dev_err(&edev->dev, "extcon: maximum number of supported cables exceeded.\n");  in extcon_dev_register()
725 	edev->dev.class = extcon_class;  in extcon_dev_register()
726 	edev->dev.release = extcon_dev_release;  in extcon_dev_register()
728 	edev->name = edev->name ? edev->name : dev_name(edev->dev.parent);  in extcon_dev_register()
729 	if (IS_ERR_OR_NULL(edev->name)) {  in extcon_dev_register()
730 		dev_err(&edev->dev,  in extcon_dev_register()
734 	dev_set_name(&edev->dev, "%s", edev->name);  in extcon_dev_register()
736 	if (edev->max_supported) {  in extcon_dev_register()
741 		edev->cables = kzalloc(sizeof(struct extcon_cable) *  in extcon_dev_register()
742 				       edev->max_supported, GFP_KERNEL);  in extcon_dev_register()
743 		if (!edev->cables) {  in extcon_dev_register()
747 		for (index = 0; index < edev->max_supported; index++) {  in extcon_dev_register()
748 			cable = &edev->cables[index];  in extcon_dev_register()
755 					cable = &edev->cables[index];  in extcon_dev_register()
764 			cable->edev = edev;  in extcon_dev_register()
784 	if (edev->max_supported && edev->mutually_exclusive) {  in extcon_dev_register()
789 		for (index = 0; edev->mutually_exclusive[index]; index++)  in extcon_dev_register()
792 		edev->attrs_muex = kzalloc(sizeof(struct attribute *) *  in extcon_dev_register()
794 		if (!edev->attrs_muex) {  in extcon_dev_register()
799 		edev->d_attrs_muex = kzalloc(sizeof(struct device_attribute) *  in extcon_dev_register()
801 		if (!edev->d_attrs_muex) {  in extcon_dev_register()
803 			kfree(edev->attrs_muex);  in extcon_dev_register()
807 		for (index = 0; edev->mutually_exclusive[index]; index++) {  in extcon_dev_register()
808 			sprintf(buf, "0x%x", edev->mutually_exclusive[index]);  in extcon_dev_register()
813 					kfree(edev->d_attrs_muex[index].attr.  in extcon_dev_register()
816 				kfree(edev->d_attrs_muex);  in extcon_dev_register()
817 				kfree(edev->attrs_muex);  in extcon_dev_register()
822 			sysfs_attr_init(&edev->d_attrs_muex[index].attr);  in extcon_dev_register()
823 			edev->d_attrs_muex[index].attr.name = name;  in extcon_dev_register()
824 			edev->d_attrs_muex[index].attr.mode = 0000;  in extcon_dev_register()
825 			edev->attrs_muex[index] = &edev->d_attrs_muex[index]  in extcon_dev_register()
828 		edev->attr_g_muex.name = muex_name;  in extcon_dev_register()
829 		edev->attr_g_muex.attrs = edev->attrs_muex;  in extcon_dev_register()
833 	if (edev->max_supported) {  in extcon_dev_register()
834 		edev->extcon_dev_type.groups =  in extcon_dev_register()
836 				(edev->max_supported + 2), GFP_KERNEL);  in extcon_dev_register()
837 		if (!edev->extcon_dev_type.groups) {  in extcon_dev_register()
842 		edev->extcon_dev_type.name = dev_name(&edev->dev);  in extcon_dev_register()
843 		edev->extcon_dev_type.release = dummy_sysfs_dev_release;  in extcon_dev_register()
845 		for (index = 0; index < edev->max_supported; index++)  in extcon_dev_register()
846 			edev->extcon_dev_type.groups[index] =  in extcon_dev_register()
847 				&edev->cables[index].attr_g;  in extcon_dev_register()
848 		if (edev->mutually_exclusive)  in extcon_dev_register()
849 			edev->extcon_dev_type.groups[index] =  in extcon_dev_register()
850 				&edev->attr_g_muex;  in extcon_dev_register()
852 		edev->dev.type = &edev->extcon_dev_type;  in extcon_dev_register()
855 	ret = device_register(&edev->dev);  in extcon_dev_register()
857 		put_device(&edev->dev);  in extcon_dev_register()
862 		ret = class_compat_create_link(switch_class, &edev->dev, NULL);  in extcon_dev_register()
865 	spin_lock_init(&edev->lock);  in extcon_dev_register()
867 	RAW_INIT_NOTIFIER_HEAD(&edev->nh);  in extcon_dev_register()
869 	dev_set_drvdata(&edev->dev, edev);  in extcon_dev_register()
870 	edev->state = 0;  in extcon_dev_register()
873 	list_add(&edev->entry, &extcon_dev_list);  in extcon_dev_register()
879 	if (edev->max_supported)  in extcon_dev_register()
880 		kfree(edev->extcon_dev_type.groups);  in extcon_dev_register()
882 	if (edev->max_supported && edev->mutually_exclusive) {  in extcon_dev_register()
883 		for (index = 0; edev->mutually_exclusive[index]; index++)  in extcon_dev_register()
884 			kfree(edev->d_attrs_muex[index].attr.name);  in extcon_dev_register()
885 		kfree(edev->d_attrs_muex);  in extcon_dev_register()
886 		kfree(edev->attrs_muex);  in extcon_dev_register()
889 	for (index = 0; index < edev->max_supported; index++)  in extcon_dev_register()
890 		kfree(edev->cables[index].attr_g.name);  in extcon_dev_register()
892 	if (edev->max_supported)  in extcon_dev_register()
893 		kfree(edev->cables);  in extcon_dev_register()
906 void extcon_dev_unregister(struct extcon_dev *edev)  in extcon_dev_unregister()  argument
911 	list_del(&edev->entry);  in extcon_dev_unregister()
914 	if (IS_ERR_OR_NULL(get_device(&edev->dev))) {  in extcon_dev_unregister()
915 		dev_err(&edev->dev, "Failed to unregister extcon_dev (%s)\n",  in extcon_dev_unregister()
916 				dev_name(&edev->dev));  in extcon_dev_unregister()
920 	device_unregister(&edev->dev);  in extcon_dev_unregister()
922 	if (edev->mutually_exclusive && edev->max_supported) {  in extcon_dev_unregister()
923 		for (index = 0; edev->mutually_exclusive[index];  in extcon_dev_unregister()
925 			kfree(edev->d_attrs_muex[index].attr.name);  in extcon_dev_unregister()
926 		kfree(edev->d_attrs_muex);  in extcon_dev_unregister()
927 		kfree(edev->attrs_muex);  in extcon_dev_unregister()
930 	for (index = 0; index < edev->max_supported; index++)  in extcon_dev_unregister()
931 		kfree(edev->cables[index].attr_g.name);  in extcon_dev_unregister()
933 	if (edev->max_supported) {  in extcon_dev_unregister()
934 		kfree(edev->extcon_dev_type.groups);  in extcon_dev_unregister()
935 		kfree(edev->cables);  in extcon_dev_unregister()
940 		class_compat_remove_link(switch_class, &edev->dev, NULL);  in extcon_dev_unregister()
942 	put_device(&edev->dev);  in extcon_dev_unregister()
966 int devm_extcon_dev_register(struct device *dev, struct extcon_dev *edev)  in devm_extcon_dev_register()  argument
975 	ret = extcon_dev_register(edev);  in devm_extcon_dev_register()
981 	*ptr = edev;  in devm_extcon_dev_register()
996 void devm_extcon_dev_unregister(struct device *dev, struct extcon_dev *edev)  in devm_extcon_dev_unregister()  argument
999 			       devm_extcon_dev_match, edev));  in devm_extcon_dev_unregister()
1014 	struct extcon_dev *edev;  in extcon_get_edev_by_phandle()  local
1029 	list_for_each_entry(edev, &extcon_dev_list, entry) {  in extcon_get_edev_by_phandle()
1030 		if (edev->dev.parent && edev->dev.parent->of_node == node) {  in extcon_get_edev_by_phandle()
1032 			return edev;  in extcon_get_edev_by_phandle()