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| author | Tang Qijun <qijun.tang@ecs.corp-partner.google.com> | 2021-09-09 01:22:28 -0400 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-10-07 15:55:01 +0000 |
| commit | 14891fcf8ac0ac2e1c72f5d22321c6b077ab2e53 (patch) | |
| tree | 3a9987bf6d407e70f8918e47dfe99bc50b02266f /include | |
| parent | 234e646fd807dc60f9af78c80db3edf8d5f93cee (diff) | |
| download | chrome-ec-14891fcf8ac0ac2e1c72f5d22321c6b077ab2e53.tar.gz | |
chgstv2: Implement battery protection for low voltage
Deep charge inspection is a battery protection mechanism: If
battery voltage is lower than 6V, deep charge for more than 30 minutes
The battery voltage is still lower than 6V, the system will stop charging
BRANCH=trogdor
BUG=b:198226241
TEST=run-sbs_charging_v2
Signed-off-by: Tang Qijun <qijun.tang@ecs.corp-partner.google.com>
Change-Id: I89adf7809992b9e71b232ad1129af1407acf05a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3151037
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/charge_state.h | 5 | ||||
| -rw-r--r-- | include/config.h | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/include/charge_state.h b/include/charge_state.h index 0ab7ecd686..9349c3ea4c 100644 --- a/include/charge_state.h +++ b/include/charge_state.h @@ -82,6 +82,11 @@ enum charge_state { enum charge_state charge_get_state(void); /** + * Return current charge v2 state. + */ +__test_only enum charge_state_v2 charge_get_state_v2(void); + +/** * Return non-zero if battery is so low we want to keep AP off. */ int charge_keep_power_off(void); diff --git a/include/config.h b/include/config.h index 71f649bbc9..9ce47f8287 100644 --- a/include/config.h +++ b/include/config.h @@ -610,6 +610,21 @@ #undef CONFIG_BATTERY_REVIVE_DISCONNECT /* + * Low voltage protection for a battery (a.k.a. deep charge inspection): + * If battery voltage is lower than voltage_min, deep charge for more + * than precharge time The battery voltage is still lower than voltage_min, + * the system will stop charging + */ +#undef CONFIG_BATTERY_LOW_VOLTAGE_PROTECTION + +/* + * If battery voltage is lower than voltage_min, precharge voltage & current + * are supplied and charging will be disabled after + * CONFIG_BATTERY_LOW_VOLTAGE_TIMEOUT seconds. + */ +#define CONFIG_BATTERY_LOW_VOLTAGE_TIMEOUT (30*60*SECOND) + +/* * Specify the battery percentage at which the host is told it is full. * If this value is not specified the default is 97% set in battery.h. */ |