1 // SPDX-License-Identifier: GPL-2.0
3  * Wakeup statistics in sysfs
6  * Copyright (c) 2019 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
29 	return sysfs_emit(buf, "%lu\n", ws->_name);			\
43 		ws->active ? ktime_sub(ktime_get(), ws->last_time) : 0;  in active_time_ms_show()
54 	ktime_t total_time = ws->total_time;  in total_time_ms_show()
56 	if (ws->active) {  in total_time_ms_show()
57 		active_time = ktime_sub(ktime_get(), ws->last_time);  in total_time_ms_show()
70 	ktime_t max_time = ws->max_time;  in max_time_ms_show()
72 	if (ws->active) {  in max_time_ms_show()
73 		active_time = ktime_sub(ktime_get(), ws->last_time);  in max_time_ms_show()
87 	return sysfs_emit(buf, "%lld\n", ktime_to_ms(ws->last_time));  in last_change_ms_show()
96 	return sysfs_emit(buf, "%s\n", ws->name);  in name_show()
105 	ktime_t prevent_sleep_time = ws->prevent_sleep_time;  in prevent_suspend_time_ms_show()
107 	if (ws->active && ws->autosleep_enabled) {  in prevent_suspend_time_ms_show()
109 			ktime_sub(ktime_get(), ws->start_prevent_time));  in prevent_suspend_time_ms_show()
136 static struct device *wakeup_source_device_create(struct device *parent,  in wakeup_source_device_create()  argument
144 		retval = -ENOMEM;  in wakeup_source_device_create()
149 	dev->devt = MKDEV(0, 0);  in wakeup_source_device_create()
150 	dev->class = wakeup_class;  in wakeup_source_device_create()
151 	dev->parent = parent;  in wakeup_source_device_create()
152 	dev->groups = wakeup_source_groups;  in wakeup_source_device_create()
153 	dev->release = device_create_release;  in wakeup_source_device_create()
157 	retval = dev_set_name(dev, "wakeup%d", ws->id);  in wakeup_source_device_create()
173  * wakeup_source_sysfs_add - Add wakeup_source attributes to sysfs.
174  * @parent: Device given wakeup source is associated with (or NULL if virtual).
175  * @ws: Wakeup source to be added in sysfs.
177 int wakeup_source_sysfs_add(struct device *parent, struct wakeup_source *ws)  in wakeup_source_sysfs_add()  argument
181 	dev = wakeup_source_device_create(parent, ws);  in wakeup_source_sysfs_add()
184 	ws->dev = dev;  in wakeup_source_sysfs_add()
190  * pm_wakeup_source_sysfs_add - Add wakeup_source attributes to sysfs
192  * @parent: Device given wakeup source is associated with
194 int pm_wakeup_source_sysfs_add(struct device *parent)  in pm_wakeup_source_sysfs_add()  argument
196 	if (!parent->power.wakeup || parent->power.wakeup->dev)  in pm_wakeup_source_sysfs_add()
199 	return wakeup_source_sysfs_add(parent, parent->power.wakeup);  in pm_wakeup_source_sysfs_add()
203  * wakeup_source_sysfs_remove - Remove wakeup_source attributes from sysfs.
204  * @ws: Wakeup source to be removed from sysfs.
208 	device_unregister(ws->dev);  in wakeup_source_sysfs_remove()
213 	wakeup_class = class_create(THIS_MODULE, "wakeup");  in wakeup_sources_sysfs_init()