diff options
| author | Philip Chen <philipchen@google.com> | 2018-04-03 15:10:01 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-05-10 19:41:04 -0700 |
| commit | bf62593ebd4dead8553ca5615290fe372198e846 (patch) | |
| tree | 31a56e78ac8201ef2f3001c438881ea9120df7e2 /include/throttle_ap.h | |
| parent | ec1428f96dd750d20047b6b1c4a72e270d71682e (diff) | |
| download | chrome-ec-bf62593ebd4dead8553ca5615290fe372198e846.tar.gz | |
charge_state_v2: Throttle AP in high battery discharge current
When EC sees discharge current hit BAT_MAX_DISCHG_CURRENT,
we kick off a timer and ask AP to throttle.
Then EC keeps monitoring discharge current. If the current doesn't
drop below BAT_MAX_DISCHG_CURRENT - BAT_OCP_HYSTERESIS, we restart
the timer and notify AP again, which shouldn't happen unless
AP misses or ignores the first notification.
When the timer expires, which means EC hasn't seen over-current
for BAT_OCP_TIMEOUT_US, we ask AP to stop throttling.
BUG=b:74321682, chromium:838754
BRANCH=scarlet
TEST=manually test on scarlet, confirm EC sends
EC_HOST_EVENT_THROTTLE_START and EC_HOST_EVENT_THROTTLE_STOP
host events when entering/exiting OCP.
Change-Id: I1e55fc23249596d8afec52a3885655ca9c1f2151
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/994188
Commit-Ready: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Diffstat (limited to 'include/throttle_ap.h')
| -rw-r--r-- | include/throttle_ap.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/throttle_ap.h b/include/throttle_ap.h index 8d2af51db9..db651c432e 100644 --- a/include/throttle_ap.h +++ b/include/throttle_ap.h @@ -30,7 +30,7 @@ enum throttle_type { */ enum throttle_sources { THROTTLE_SRC_THERMAL = 0, - THROTTLE_SRC_POWER, + THROTTLE_SRC_BAT_DISCHG_CURRENT, }; /** @@ -43,7 +43,9 @@ enum throttle_sources { * @param type Type of throttling desired * @param source Which task is requesting throttling */ -#ifdef CONFIG_TEMP_SENSOR +#if defined(CONFIG_THROTTLE_AP) || \ + defined(CONFIG_THROTTLE_AP_ON_BAT_DISCHG_CURRENT) + void throttle_ap(enum throttle_level level, enum throttle_type type, enum throttle_sources source); |