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PM: wakeup: Add routine to help fetch wakeup source object.

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Some user might want to go through all registered wakeup sources
and doing things accordingly. For example, SoC PM driver might need to
do HW programming to prevent powering down specific IP which wakeup
source depending on. So add this API to help walk through all registered
wakeup source objects on that list and return them one by one.

Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
Tested-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
This commit is contained in:
Ran Wang
2019-10-24 17:26:42 +08:00
committed by Li Yang
parent 54ecb8f702
commit b4941adb24
2 changed files with 63 additions and 0 deletions
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9
include/linux/pm_wakeup.h
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@@ -63,6 +63,11 @@ struct wakeup_source {
bool autosleep_enabled:1;
};
#define for_each_wakeup_source(ws) \
for ((ws) = wakeup_sources_walk_start(); \
(ws); \
(ws) = wakeup_sources_walk_next((ws)))
#ifdef CONFIG_PM_SLEEP
/*
@@ -92,6 +97,10 @@ extern void wakeup_source_remove(struct wakeup_source *ws);
extern struct wakeup_source *wakeup_source_register(struct device *dev,
const char *name);
extern void wakeup_source_unregister(struct wakeup_source *ws);
extern int wakeup_sources_read_lock(void);
extern void wakeup_sources_read_unlock(int idx);
extern struct wakeup_source *wakeup_sources_walk_start(void);
extern struct wakeup_source *wakeup_sources_walk_next(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);