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| author | Jack Rosenthal <jrosenth@chromium.org> | 2021-03-18 09:27:14 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-03-20 03:25:36 +0000 |
| commit | 674108fb834d5ba2e1fb2ebb78aa293eec3aee44 (patch) | |
| tree | b6590d91f218499d538012e8b34d5b8cb6181bd5 /common | |
| parent | 7badef3bb2620762b119d9d8662aaf0a19c55778 (diff) | |
| download | chrome-ec-674108fb834d5ba2e1fb2ebb78aa293eec3aee44.tar.gz | |
zephyr: implement task timers
CrOS EC OS provides one implicit timer associated with every task (see
docs/core_runtime.md). As luck has it, we never needed these implicit
timers for volteer, but ARM power sequencing code uses it.
This implements the timer_arm and timer_cancel functions, which
function equivalently to how they would in CrOS EC OS. (Note: we
previously were compiling timer_arm and timer_cancel from CrOS EC, but
these definitions were non-functional as we never call process_timers
from Zephyr).
BUG=b:183058135
BRANCH=none
TEST=provided unit tests pass
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: Ibad20002c489a8149efde713d8273adae835f653
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2774362
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/timer.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/common/timer.c b/common/timer.c index d0386a9eca..d0d3c80024 100644 --- a/common/timer.c +++ b/common/timer.c @@ -122,6 +122,8 @@ void udelay(unsigned us) } #endif +/* Zephyr provides its own implementation in task shim */ +#ifndef CONFIG_ZEPHYR int timer_arm(timestamp_t event, task_id_t tskid) { timestamp_t now = get_time(); @@ -152,6 +154,7 @@ void timer_cancel(task_id_t tskid) * timer-related housekeeping when the next timer interrupt fires. */ } +#endif /* * For us < (2^31 - task scheduling latency)(~ 2147 sec), this function will |