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authorRafael J. Wysocki <rjw@sisk.pl>2012-08-06 03:40:41 +0400
committerRafael J. Wysocki <rjw@sisk.pl>2012-09-04 03:36:01 +0400
commitadc78e6b9946a4b22e22403d961f3b03c469e5d3 (patch)
treee0837d6a5778c9bfa0a698f10a7cbedf9cf76cd0 /include/linux/clockchips.h
parent77f827de07432a74821cf0f831d699544b2d474f (diff)
downloadlinux-adc78e6b9946a4b22e22403d961f3b03c469e5d3.tar.xz
timekeeping: Add suspend and resume of clock event devices
Some clock event devices, for example such that belong to PM domains, need to be handled in a spcial way during the timekeeping suspend and resume (which takes place in the system core, or "syscore", stages of system power transitions) in analogy with clock sources. Introduce .suspend() and .resume() callbacks for clock event devices that will be executed by timekeeping_suspend/_resume(), respectively, next the the clock sources' .suspend() and .resume() callbacks. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/clockchips.h')
-rw-r--r--include/linux/clockchips.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index acba894374a1..8a7096fcb01e 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -97,6 +97,8 @@ struct clock_event_device {
void (*broadcast)(const struct cpumask *mask);
void (*set_mode)(enum clock_event_mode mode,
struct clock_event_device *);
+ void (*suspend)(struct clock_event_device *);
+ void (*resume)(struct clock_event_device *);
unsigned long min_delta_ticks;
unsigned long max_delta_ticks;
@@ -156,6 +158,9 @@ clockevents_calc_mult_shift(struct clock_event_device *ce, u32 freq, u32 minsec)
freq, minsec);
}
+extern void clockevents_suspend(void);
+extern void clockevents_resume(void);
+
#ifdef CONFIG_GENERIC_CLOCKEVENTS
extern void clockevents_notify(unsigned long reason, void *arg);
#else
@@ -164,6 +169,9 @@ extern void clockevents_notify(unsigned long reason, void *arg);
#else /* CONFIG_GENERIC_CLOCKEVENTS_BUILD */
+static inline void clockevents_suspend(void) {}
+static inline void clockevents_resume(void) {}
+
#define clockevents_notify(reason, arg) do { } while (0)
#endif