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| author | Jonathan Brandmeyer <jbrandmeyer@chromium.org> | 2018-08-03 13:24:06 -0600 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-08-08 04:29:20 -0700 |
| commit | b80693e94e6e9aa0a382c39c20efba6f2c7403a9 (patch) | |
| tree | b44a8b48858906c6f8a3875b6a69d7c2b6908ddc /common/charge_state_v2.c | |
| parent | 5d2cdcab232748095d1efeb4e5c0fc23b13adb67 (diff) | |
| download | chrome-ec-b80693e94e6e9aa0a382c39c20efba6f2c7403a9.tar.gz | |
battery: Optionally prevent boot at low SOC with cell imbalance.
Measure the cell imbalance with method dispatch to a per-battery
method, such that families with a plurality of configurable batteries
can support them all. By default, cell imbalance is taken to be 'zero'
in case we don't support that battery's management IC. Provide a driver
for reading cell voltages for the TI BQ4050 family. This IC is quite
popular, but by no means universal.
BUG=b:111214767
BRANCH=none
TEST=Boot on Careena with a custom debug print statement, showing that
we can measure the typical battery voltages during and after the boot at
the battery status polling interval.
Change-Id: I235389b252ac9c373aa9706dbd1066f7c0bbce71
Signed-off-by: Jonathan Brandmeyer <jbrandmeyer@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1162663
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'common/charge_state_v2.c')
| -rw-r--r-- | common/charge_state_v2.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/common/charge_state_v2.c b/common/charge_state_v2.c index d97157e38b..5cca92f181 100644 --- a/common/charge_state_v2.c +++ b/common/charge_state_v2.c @@ -1973,14 +1973,19 @@ int charge_prevent_power_on(int power_button_pressed) automatic_power_on = 0; /* * Require a minimum battery level to power on and ensure that the - * battery can prvoide power to the system. + * battery can provide power to the system. */ if (current_batt_params->is_present != BP_YES || +#ifdef CONFIG_BATTERY_MEASURE_IMBALANCE + (current_batt_params->flags & BATT_FLAG_IMBALANCED_CELL && + current_batt_params->state_of_charge < + CONFIG_CHARGER_MIN_BAT_PCT_IMBALANCED_POWER_ON) || +#endif #ifdef CONFIG_BATTERY_REVIVE_DISCONNECT battery_get_disconnect_state() != BATTERY_NOT_DISCONNECTED || #endif current_batt_params->state_of_charge < - CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) + CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) prevent_power_on = 1; #if defined(CONFIG_CHARGER_MIN_POWER_MW_FOR_POWER_ON) && \ |