diff options
| author | Philip Chen <philipchen@google.com> | 2018-05-17 18:55:27 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-05-21 18:19:22 -0700 |
| commit | 453647e21a9e584cd0ee8567efef3d81371ae27f (patch) | |
| tree | cd1a505e1945c2233cef34a40bf3a9f0a555544e /include/throttle_ap.h | |
| parent | d8186821885b7403d3118810ab56fc617068db1d (diff) | |
| download | chrome-ec-453647e21a9e584cd0ee8567efef3d81371ae27f.tar.gz | |
charge_state_v2: Throttle AP in low battery voltage
When EC sees voltage drops below BAT_LOW_VOLTAGE_THRESH,
we kick off a timer and ask AP to throttle.
When the timer expires which means EC hasn't seen under-voltage
for BAT_UVP_TIMEOUT_US, we ask AP to stop throttling.
We reset the throttling status and do nothing when AP is off (S5).
BUG=b:73050145, 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 UVP.
Change-Id: Ia760989f760f95549f7a8a8acb1d01de23feab5a
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1064983
Commit-Ready: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: David Schneider <dnschneid@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'include/throttle_ap.h')
| -rw-r--r-- | include/throttle_ap.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/throttle_ap.h b/include/throttle_ap.h index db651c432e..a149207667 100644 --- a/include/throttle_ap.h +++ b/include/throttle_ap.h @@ -31,6 +31,7 @@ enum throttle_type { enum throttle_sources { THROTTLE_SRC_THERMAL = 0, THROTTLE_SRC_BAT_DISCHG_CURRENT, + THROTTLE_SRC_BAT_VOLTAGE, }; /** @@ -44,7 +45,8 @@ enum throttle_sources { * @param source Which task is requesting throttling */ #if defined(CONFIG_THROTTLE_AP) || \ - defined(CONFIG_THROTTLE_AP_ON_BAT_DISCHG_CURRENT) + defined(CONFIG_THROTTLE_AP_ON_BAT_DISCHG_CURRENT) || \ + defined(CONFIG_THROTTLE_AP_ON_BAT_VOLTAGE) void throttle_ap(enum throttle_level level, enum throttle_type type, |