12 #include <linux/reboot.h>
13 #include <linux/reboot-mode.h>
34 static int get_reboot_mode_magic(struct reboot_mode_driver *reboot,  in get_reboot_mode_magic()  argument
44 	list_for_each_entry(info, &reboot->head, list) {  in get_reboot_mode_magic()
56 static void reboot_mode_write(struct reboot_mode_driver *reboot,  in reboot_mode_write()  argument
61 	magic = get_reboot_mode_magic(reboot, cmd);  in reboot_mode_write()
63 		magic = get_reboot_mode_magic(reboot, NULL);  in reboot_mode_write()
65 		reboot->write(reboot, magic);  in reboot_mode_write()
73 	struct reboot_mode_driver *reboot;  in reboot_mode_notify()  local
75 	reboot = container_of(this, struct reboot_mode_driver, reboot_notifier);  in reboot_mode_notify()
76 	reboot_mode_write(reboot, cmd);  in reboot_mode_notify()
84 	struct reboot_mode_driver *reboot;  in reboot_mode_pre_restart_notify()  local
86 	reboot = container_of(this, struct reboot_mode_driver, pre_restart_notifier);  in reboot_mode_pre_restart_notify()
88 		reboot_mode_write(reboot, cmd);  in reboot_mode_pre_restart_notify()
96 	struct reboot_mode_driver *reboot;  in reboot_mode_panic_notify()  local
99 	reboot = container_of(this, struct reboot_mode_driver, panic_notifier);  in reboot_mode_panic_notify()
100 	reboot_mode_write(reboot, cmd);  in reboot_mode_panic_notify()
105 static int boot_mode_parse(struct reboot_mode_driver *reboot)  in boot_mode_parse()  argument
108 	unsigned int magic = reboot->read(reboot);  in boot_mode_parse()
110 	list_for_each_entry(info, &reboot->head, list) {  in boot_mode_parse()
121  * reboot_mode_register - register a reboot mode driver
122  * @reboot: reboot mode driver
126 int reboot_mode_register(struct reboot_mode_driver *reboot)  in reboot_mode_register()  argument
130 	struct device_node *np = reboot->dev->of_node;  in reboot_mode_register()
134 	INIT_LIST_HEAD(&reboot->head);  in reboot_mode_register()
140 		info = devm_kzalloc(reboot->dev, sizeof(*info), GFP_KERNEL);  in reboot_mode_register()
147 			dev_err(reboot->dev, "reboot mode %s without magic number\n",  in reboot_mode_register()
149 			devm_kfree(reboot->dev, info);  in reboot_mode_register()
160 			dev_err(reboot->dev, "invalid mode name(%s): too short!\n",  in reboot_mode_register()
165 		list_add_tail(&info->list, &reboot->head);  in reboot_mode_register()
168 	boot_mode_parse(reboot);  in reboot_mode_register()
169 	reboot->reboot_notifier.notifier_call = reboot_mode_notify;  in reboot_mode_register()
170 	reboot->pre_restart_notifier.notifier_call = reboot_mode_pre_restart_notify;  in reboot_mode_register()
171 	reboot->panic_notifier.notifier_call = reboot_mode_panic_notify;  in reboot_mode_register()
172 	register_reboot_notifier(&reboot->reboot_notifier);  in reboot_mode_register()
173 	register_pre_restart_handler(&reboot->pre_restart_notifier);  in reboot_mode_register()
175 				       &reboot->panic_notifier);  in reboot_mode_register()
181 	list_for_each_entry(info, &reboot->head, list)  in reboot_mode_register()
189  * reboot_mode_unregister - unregister a reboot mode driver
190  * @reboot: reboot mode driver
192 int reboot_mode_unregister(struct reboot_mode_driver *reboot)  in reboot_mode_unregister()  argument
196 	unregister_reboot_notifier(&reboot->reboot_notifier);  in reboot_mode_unregister()
198 	list_for_each_entry(info, &reboot->head, list)  in reboot_mode_unregister()
213  * @reboot: reboot mode driver
218 			      struct reboot_mode_driver *reboot)  in devm_reboot_mode_register()  argument
227 	rc = reboot_mode_register(reboot);  in devm_reboot_mode_register()
233 	*dr = reboot;  in devm_reboot_mode_register()
253  * @reboot: reboot mode driver
256 				 struct reboot_mode_driver *reboot)  in devm_reboot_mode_unregister()  argument
260 			       devm_reboot_mode_match, reboot));  in devm_reboot_mode_unregister()
265 MODULE_DESCRIPTION("System reboot mode core library");