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yaml
---
r: 77540
b: refs/heads/master
c: 4ae7806
h: refs/heads/master
v: v3
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Russell King authored and Russell King committed Jan 26, 2008
1 parent d336fbb commit da9458a
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Showing 2 changed files with 13 additions and 10 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: a88264c24c44924a549f3d596b86d611b7ee9909
refs/heads/master: 4ae7806f8b4bf9a1e74c82f3bd4e91d59bd3d697
21 changes: 12 additions & 9 deletions trunk/arch/arm/mach-pxa/time.c
Original file line number Diff line number Diff line change
Expand Up @@ -181,7 +181,7 @@ static void __init pxa_timer_init(void)
}

#ifdef CONFIG_PM
static unsigned long osmr[4], oier;
static unsigned long osmr[4], oier, oscr;

static void pxa_timer_suspend(void)
{
Expand All @@ -190,23 +190,26 @@ static void pxa_timer_suspend(void)
osmr[2] = OSMR2;
osmr[3] = OSMR3;
oier = OIER;
oscr = OSCR;
}

static void pxa_timer_resume(void)
{
/*
* Ensure that we have at least MIN_OSCR_DELTA between match
* register 0 and the OSCR, to guarantee that we will receive
* the one-shot timer interrupt. We adjust OSMR0 in preference
* to OSCR to guarantee that OSCR is monotonically incrementing.
*/
if (osmr[0] - oscr < MIN_OSCR_DELTA)
osmr[0] += MIN_OSCR_DELTA;

OSMR0 = osmr[0];
OSMR1 = osmr[1];
OSMR2 = osmr[2];
OSMR3 = osmr[3];
OIER = oier;

/*
* OSCR0 is the system timer, which has to increase
* monotonically until it rolls over in hardware. The value
* (OSMR0 - LATCH) is OSCR0 at the most recent system tick,
* which is a handy value to restore to OSCR0.
*/
OSCR = OSMR0 - LATCH;
OSCR = oscr;
}
#else
#define pxa_timer_suspend NULL
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