diff options
| -rw-r--r-- | board/nami/battery.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/board/nami/battery.c b/board/nami/battery.c index b34c5e18e8..d32a1b74ff 100644 --- a/board/nami/battery.c +++ b/board/nami/battery.c @@ -213,6 +213,19 @@ static int battery_init(void) !!(batt_status & STATUS_INITIALIZED); } +enum battery_disconnect_grace_period { + BATTERY_DISCONNECT_GRACE_PERIOD_OFF, + BATTERY_DISCONNECT_GRACE_PERIOD_ON, + BATTERY_DISCONNECT_GRACE_PERIOD_OVER, +}; +static enum battery_disconnect_grace_period disconnect_grace_period; + +static void battery_disconnect_timer(void) +{ + disconnect_grace_period = BATTERY_DISCONNECT_GRACE_PERIOD_OVER; +} +DECLARE_DEFERRED(battery_disconnect_timer); + /* * Check for case where both XCHG and XDSG bits are set indicating that even * though the FG can be read from the battery, the battery is not able to be @@ -238,8 +251,29 @@ static int battery_check_disconnect_ti_bq40z50(void) if ((data[3] & (BATTERY_DISCHARGING_DISABLED | BATTERY_CHARGING_DISABLED)) == - (BATTERY_DISCHARGING_DISABLED | BATTERY_CHARGING_DISABLED)) - return BATTERY_DISCONNECTED; + (BATTERY_DISCHARGING_DISABLED | BATTERY_CHARGING_DISABLED)) { + if (oem != PROJECT_SONA) + return BATTERY_DISCONNECTED; + /* + * For Sona, we need a workaround to wake up a battery from + * cutoff. We return DISCONNECT_ERROR for the 5 seconds after + * the first call BP_NOT_SURE is reported to chgstv2. It will + * supply precharge current and wakes up the battery from + * cutoff. If the battery is good, we won't come back here. + * If not, after 5 seconds, we will return DISCONNECTED to + * stop charging and avoid damaging the battery. + */ + if (disconnect_grace_period == + BATTERY_DISCONNECT_GRACE_PERIOD_OVER) + return BATTERY_DISCONNECTED; + if (disconnect_grace_period == + BATTERY_DISCONNECT_GRACE_PERIOD_OFF) + hook_call_deferred(&battery_disconnect_timer_data, + 5 * SECOND); + ccprintf("Battery disconnect grace period\n"); + disconnect_grace_period = BATTERY_DISCONNECT_GRACE_PERIOD_ON; + return BATTERY_DISCONNECT_ERROR; + } return BATTERY_NOT_DISCONNECTED; } |