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Handle battery charged alarm

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When battery flags TERMINATE_CHARGE or OVER_CHARGED alarm, we should
treat them as a signal of battery fully charged.

BUG=chrome-os-partner:18914
TEST=On Spring:
       1. Plug in adapter when battery if full, see green LED.
       2. Plug in adapter when battery is not full, see yellow LED.
BRANCH=spring

Change-Id: Ica414a0e1667b8f30a0cc9a5d66dba1b119a59ba
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49456
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vic Yang
2013-04-29 11:44:18 +08:00
committed by ChromeBot
parent 76b3ba079e
commit 115ab924fc
1 changed files with 14 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
common/pmu_tps65090_charger.c
View File

@@ -24,9 +24,7 @@
/* Charging and discharging alarms */
#define ALARM_DISCHARGING (ALARM_TERMINATE_DISCHARGE | ALARM_OVER_TEMP)
#define ALARM_CHARGING (ALARM_TERMINATE_CHARGE | \
ALARM_OVER_CHARGED | \
ALARM_OVER_TEMP)
#define ALARM_CHARGED (ALARM_OVER_CHARGED | ALARM_TERMINATE_CHARGE)
/* Maximum time allowed to revive a extremely low charge battery */
#define PRE_CHARGING_TIMEOUT (15 * SECOND)
@@ -217,10 +215,14 @@ static int calc_next_state(int state)
if (!battery_start_charging_range(batt_temp))
return ST_BAD_COND;
/* Turn off charger on battery charging alarm */
if (battery_status(&alarm) || (alarm & ALARM_CHARGING))
/* Turn off charger on battery over temperature alarm */
if (battery_status(&alarm) || (alarm & ALARM_OVER_TEMP))
return ST_BAD_COND;
/* Stop charging if the battery says it's charged */
if (alarm & ALARM_CHARGED)
return ST_IDLE;
/* Start charging only when battery charge lower than 100% */
if (!battery_state_of_charge(&charge)) {
config_low_current_charging(charge);
@@ -278,13 +280,15 @@ static int calc_next_state(int state)
if (battery_status(&alarm))
return ST_REINIT;
if (alarm & ALARM_CHARGING) {
CPUTS("[pmu] charging: battery alarm\n");
if (alarm & ALARM_OVER_TEMP)
return ST_CHARGING_ERROR;
return ST_REINIT;
if (alarm & ALARM_OVER_TEMP) {
CPUTS("[pmu] charging: battery over temp\n");
return ST_CHARGING_ERROR;
}
/* Go to idle state if battery is fully charged */
if (alarm & ALARM_CHARGED)
return ST_IDLE;
/*
* Disable charging on charger alarm events:
* - charger over current