v4.19.13 snapshot.
diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h
new file mode 100644
index 0000000..4238dde
--- /dev/null
+++ b/include/linux/pm_wakeup.h
@@ -0,0 +1,228 @@
+/*
+ * pm_wakeup.h - Power management wakeup interface
+ *
+ * Copyright (C) 2008 Alan Stern
+ * Copyright (C) 2010 Rafael J. Wysocki, Novell Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _LINUX_PM_WAKEUP_H
+#define _LINUX_PM_WAKEUP_H
+
+#ifndef _DEVICE_H_
+# error "please don't include this file directly"
+#endif
+
+#include <linux/types.h>
+
+struct wake_irq;
+
+/**
+ * struct wakeup_source - Representation of wakeup sources
+ *
+ * @name: Name of the wakeup source
+ * @entry: Wakeup source list entry
+ * @lock: Wakeup source lock
+ * @wakeirq: Optional device specific wakeirq
+ * @timer: Wakeup timer list
+ * @timer_expires: Wakeup timer expiration
+ * @total_time: Total time this wakeup source has been active.
+ * @max_time: Maximum time this wakeup source has been continuously active.
+ * @last_time: Monotonic clock when the wakeup source's was touched last time.
+ * @prevent_sleep_time: Total time this source has been preventing autosleep.
+ * @event_count: Number of signaled wakeup events.
+ * @active_count: Number of times the wakeup source was activated.
+ * @relax_count: Number of times the wakeup source was deactivated.
+ * @expire_count: Number of times the wakeup source's timeout has expired.
+ * @wakeup_count: Number of times the wakeup source might abort suspend.
+ * @active: Status of the wakeup source.
+ * @has_timeout: The wakeup source has been activated with a timeout.
+ */
+struct wakeup_source {
+ const char *name;
+ struct list_head entry;
+ spinlock_t lock;
+ struct wake_irq *wakeirq;
+ struct timer_list timer;
+ unsigned long timer_expires;
+ ktime_t total_time;
+ ktime_t max_time;
+ ktime_t last_time;
+ ktime_t start_prevent_time;
+ ktime_t prevent_sleep_time;
+ unsigned long event_count;
+ unsigned long active_count;
+ unsigned long relax_count;
+ unsigned long expire_count;
+ unsigned long wakeup_count;
+ bool active:1;
+ bool autosleep_enabled:1;
+};
+
+#ifdef CONFIG_PM_SLEEP
+
+/*
+ * Changes to device_may_wakeup take effect on the next pm state change.
+ */
+
+static inline bool device_can_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup;
+}
+
+static inline bool device_may_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup && !!dev->power.wakeup;
+}
+
+static inline void device_set_wakeup_path(struct device *dev)
+{
+ dev->power.wakeup_path = true;
+}
+
+/* drivers/base/power/wakeup.c */
+extern void wakeup_source_prepare(struct wakeup_source *ws, const char *name);
+extern struct wakeup_source *wakeup_source_create(const char *name);
+extern void wakeup_source_drop(struct wakeup_source *ws);
+extern void wakeup_source_destroy(struct wakeup_source *ws);
+extern void wakeup_source_add(struct wakeup_source *ws);
+extern void wakeup_source_remove(struct wakeup_source *ws);
+extern struct wakeup_source *wakeup_source_register(const char *name);
+extern void wakeup_source_unregister(struct wakeup_source *ws);
+extern int device_wakeup_enable(struct device *dev);
+extern int device_wakeup_disable(struct device *dev);
+extern void device_set_wakeup_capable(struct device *dev, bool capable);
+extern int device_init_wakeup(struct device *dev, bool val);
+extern int device_set_wakeup_enable(struct device *dev, bool enable);
+extern void __pm_stay_awake(struct wakeup_source *ws);
+extern void pm_stay_awake(struct device *dev);
+extern void __pm_relax(struct wakeup_source *ws);
+extern void pm_relax(struct device *dev);
+extern void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard);
+extern void pm_wakeup_dev_event(struct device *dev, unsigned int msec, bool hard);
+
+#else /* !CONFIG_PM_SLEEP */
+
+static inline void device_set_wakeup_capable(struct device *dev, bool capable)
+{
+ dev->power.can_wakeup = capable;
+}
+
+static inline bool device_can_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup;
+}
+
+static inline void wakeup_source_prepare(struct wakeup_source *ws,
+ const char *name) {}
+
+static inline struct wakeup_source *wakeup_source_create(const char *name)
+{
+ return NULL;
+}
+
+static inline void wakeup_source_drop(struct wakeup_source *ws) {}
+
+static inline void wakeup_source_destroy(struct wakeup_source *ws) {}
+
+static inline void wakeup_source_add(struct wakeup_source *ws) {}
+
+static inline void wakeup_source_remove(struct wakeup_source *ws) {}
+
+static inline struct wakeup_source *wakeup_source_register(const char *name)
+{
+ return NULL;
+}
+
+static inline void wakeup_source_unregister(struct wakeup_source *ws) {}
+
+static inline int device_wakeup_enable(struct device *dev)
+{
+ dev->power.should_wakeup = true;
+ return 0;
+}
+
+static inline int device_wakeup_disable(struct device *dev)
+{
+ dev->power.should_wakeup = false;
+ return 0;
+}
+
+static inline int device_set_wakeup_enable(struct device *dev, bool enable)
+{
+ dev->power.should_wakeup = enable;
+ return 0;
+}
+
+static inline int device_init_wakeup(struct device *dev, bool val)
+{
+ device_set_wakeup_capable(dev, val);
+ device_set_wakeup_enable(dev, val);
+ return 0;
+}
+
+static inline bool device_may_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup && dev->power.should_wakeup;
+}
+
+static inline void device_set_wakeup_path(struct device *dev) {}
+
+static inline void __pm_stay_awake(struct wakeup_source *ws) {}
+
+static inline void pm_stay_awake(struct device *dev) {}
+
+static inline void __pm_relax(struct wakeup_source *ws) {}
+
+static inline void pm_relax(struct device *dev) {}
+
+static inline void pm_wakeup_ws_event(struct wakeup_source *ws,
+ unsigned int msec, bool hard) {}
+
+static inline void pm_wakeup_dev_event(struct device *dev, unsigned int msec,
+ bool hard) {}
+
+#endif /* !CONFIG_PM_SLEEP */
+
+static inline void wakeup_source_init(struct wakeup_source *ws,
+ const char *name)
+{
+ wakeup_source_prepare(ws, name);
+ wakeup_source_add(ws);
+}
+
+static inline void wakeup_source_trash(struct wakeup_source *ws)
+{
+ wakeup_source_remove(ws);
+ wakeup_source_drop(ws);
+}
+
+static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec)
+{
+ return pm_wakeup_ws_event(ws, msec, false);
+}
+
+static inline void pm_wakeup_event(struct device *dev, unsigned int msec)
+{
+ return pm_wakeup_dev_event(dev, msec, false);
+}
+
+static inline void pm_wakeup_hard_event(struct device *dev)
+{
+ return pm_wakeup_dev_event(dev, 0, true);
+}
+
+#endif /* _LINUX_PM_WAKEUP_H */