power/reset/reboot-mode.c

11 #include <linux/reboot.h>
12 #include <linux/reboot-mode.h>
22 static unsigned int get_reboot_mode_magic(struct reboot_mode_driver *reboot,
32 	list_for_each_entry(info, &reboot->head, list) {
45 	struct reboot_mode_driver *reboot;
48 	reboot = container_of(this, struct reboot_mode_driver, reboot_notifier);
49 	magic = get_reboot_mode_magic(reboot, cmd);
51 		reboot->write(reboot, magic);
57  * reboot_mode_register - register a reboot mode driver
58  * @reboot: reboot mode driver
62 int reboot_mode_register(struct reboot_mode_driver *reboot)
66 	struct device_node *np = reboot->dev->of_node;
70 	INIT_LIST_HEAD(&reboot->head);
76 		info = devm_kzalloc(reboot->dev, sizeof(*info), GFP_KERNEL);
83 			dev_err(reboot->dev, "reboot mode %s without magic number\n",
85 			devm_kfree(reboot->dev, info);
96 			dev_err(reboot->dev, "invalid mode name(%s): too short!\n",
101 		list_add_tail(&info->list, &reboot->head);
104 	reboot->reboot_notifier.notifier_call = reboot_mode_notify;
105 	register_reboot_notifier(&reboot->reboot_notifier);
110 	list_for_each_entry(info, &reboot->head, list)
118  * reboot_mode_unregister - unregister a reboot mode driver
119  * @reboot: reboot mode driver
121 int reboot_mode_unregister(struct reboot_mode_driver *reboot)
125 	unregister_reboot_notifier(&reboot->reboot_notifier);
127 	list_for_each_entry(info, &reboot->head, list)
142  * @reboot: reboot mode driver
147 			      struct reboot_mode_driver *reboot)
156 	rc = reboot_mode_register(reboot);
162 	*dr = reboot;
182  * @reboot: reboot mode driver
185 				 struct reboot_mode_driver *reboot)
189 			       devm_reboot_mode_match, reboot));
194 MODULE_DESCRIPTION("System reboot mode core library");