1 // SPDX-License-Identifier: GPL-2.0
32 		gb_svc_watchdog_disable(watchdog->svc);  in svc_watchdog_pm_notifier()
35 		gb_svc_watchdog_enable(watchdog->svc);  in svc_watchdog_pm_notifier()
70 	svc = watchdog->svc;  in do_work()
72 	dev_dbg(&svc->dev, "%s: ping.\n", __func__);  in do_work()
80 		 * yet-another-callback to do that.  in do_work()
82 		dev_err(&svc->dev,  in do_work()
86 		if (svc->action == GB_SVC_WATCHDOG_BITE_PANIC_KERNEL) {  in do_work()
88 		} else if (svc->action == GB_SVC_WATCHDOG_BITE_RESET_UNIPRO) {  in do_work()
89 			dev_err(&svc->dev, "Resetting the greybus network, watch out!!!\n");  in do_work()
98 			watchdog->enabled = false;  in do_work()
102 	/* resubmit our work to happen again, if we are still "alive" */  in do_work()
103 	if (watchdog->enabled)  in do_work()
104 		schedule_delayed_work(&watchdog->work, SVC_WATCHDOG_PERIOD);  in do_work()
112 	if (svc->watchdog)  in gb_svc_watchdog_create()
117 		return -ENOMEM;  in gb_svc_watchdog_create()
119 	watchdog->enabled = false;  in gb_svc_watchdog_create()
120 	watchdog->svc = svc;  in gb_svc_watchdog_create()
121 	INIT_DELAYED_WORK(&watchdog->work, do_work);  in gb_svc_watchdog_create()
122 	svc->watchdog = watchdog;  in gb_svc_watchdog_create()
124 	watchdog->pm_notifier.notifier_call = svc_watchdog_pm_notifier;  in gb_svc_watchdog_create()
125 	retval = register_pm_notifier(&watchdog->pm_notifier);  in gb_svc_watchdog_create()
127 		dev_err(&svc->dev, "error registering pm notifier(%d)\n",  in gb_svc_watchdog_create()
134 		dev_err(&svc->dev, "error enabling watchdog (%d)\n", retval);  in gb_svc_watchdog_create()
135 		unregister_pm_notifier(&watchdog->pm_notifier);  in gb_svc_watchdog_create()
141 	svc->watchdog = NULL;  in gb_svc_watchdog_create()
149 	struct gb_svc_watchdog *watchdog = svc->watchdog;  in gb_svc_watchdog_destroy()
154 	unregister_pm_notifier(&watchdog->pm_notifier);  in gb_svc_watchdog_destroy()
156 	svc->watchdog = NULL;  in gb_svc_watchdog_destroy()
162 	if (!svc || !svc->watchdog)  in gb_svc_watchdog_enabled()
164 	return svc->watchdog->enabled;  in gb_svc_watchdog_enabled()
171 	if (!svc->watchdog)  in gb_svc_watchdog_enable()
172 		return -ENODEV;  in gb_svc_watchdog_enable()
174 	watchdog = svc->watchdog;  in gb_svc_watchdog_enable()
175 	if (watchdog->enabled)  in gb_svc_watchdog_enable()
178 	watchdog->enabled = true;  in gb_svc_watchdog_enable()
179 	schedule_delayed_work(&watchdog->work, SVC_WATCHDOG_PERIOD);  in gb_svc_watchdog_enable()
187 	if (!svc->watchdog)  in gb_svc_watchdog_disable()
188 		return -ENODEV;  in gb_svc_watchdog_disable()
190 	watchdog = svc->watchdog;  in gb_svc_watchdog_disable()
191 	if (!watchdog->enabled)  in gb_svc_watchdog_disable()
194 	watchdog->enabled = false;  in gb_svc_watchdog_disable()
195 	cancel_delayed_work_sync(&watchdog->work);  in gb_svc_watchdog_disable()