diff options
| author | Hyungwoo Yang <hyungwoo.yang@intel.com> | 2019-05-02 00:25:26 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2019-05-03 02:11:24 -0700 |
| commit | 3081e4a737875bf35d8cd8e357283a4968611de4 (patch) | |
| tree | 6a4099aec56dde12d67fb9b575815db8e3454e2b /chip/ish/hwtimer.c | |
| parent | 8e8dd8a8e4a0556b67f2ceed6b0fe1547989d924 (diff) | |
| download | chrome-ec-3081e4a737875bf35d8cd8e357283a4968611de4.tar.gz | |
ish: make sure last_deadline always valid
If there's no timer event with current clksrc_high then last_deadline
should have the maximum value(0xFFFFFFFF) within the clksrc_high since
we always get timer event at every new clk_high.
BRANCH=none
BUG=none
TEST=Tested in Arcada platform
Change-Id: Iebea955b1aefc7d986b493a8be84b8fd25812441
Signed-off-by: Hyungwoo Yang <hyungwoo.yang@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/1593092
Commit-Ready: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Diffstat (limited to 'chip/ish/hwtimer.c')
| -rw-r--r-- | chip/ish/hwtimer.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/chip/ish/hwtimer.c b/chip/ish/hwtimer.c index 6cd4f854bf..d3d78cadd6 100644 --- a/chip/ish/hwtimer.c +++ b/chip/ish/hwtimer.c @@ -191,6 +191,12 @@ uint32_t __hw_clock_event_get(void) void __hw_clock_event_clear(void) { + /* + * we get timer event at every new clksrc_high. + * so when there's no event, last_dealine should be + * the last value within current clksrc_high. + */ + last_deadline = 0xFFFFFFFF; wait_while_settling(HPET_T1_SETTLING); HPET_TIMER_CONF_CAP(1) &= ~HPET_Tn_INT_ENB_CNF; } @@ -281,6 +287,9 @@ int __hw_clock_source_init(uint32_t start_t) timer0_config |= HPET_Tn_INT_TYPE_CNF; timer1_config |= HPET_Tn_INT_TYPE_CNF; + /* no event until next timer 0 IRQ for clksrc_high++ */ + last_deadline = 0xFFFFFFFF; + /* Enable interrupt */ timer0_config |= HPET_Tn_INT_ENB_CNF; |