evie/android_kernel_oneplus_msm8998
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smb-lib: update displaying battery overvoltage in health property

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Currently, smb2 charger is configured to not end the charging
cycle when battery overvoltage occurs. However, when the battery
overvoltage status is read, it will be displayed through health
property. Improve this by reading the battery voltage and check
whether it is within 40mV headroom above float voltage. If it is
above that threshold then continue with displaying overvoltage
status.

CRs-Fixed: 1079363
Change-Id: I45847f446c91c80a5110d80b59a0ae4b8e2c40e5
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2016-10-21 17:30:46 -07:00
parent b9c370a582
commit f410c92004
1 changed files with 14 additions and 3 deletions

17
drivers/power/qcom-charger/smb-lib.c
View file

@ -1199,6 +1199,7 @@ int smblib_get_prop_batt_charge_type(struct smb_charger *chg,
int smblib_get_prop_batt_health(struct smb_charger *chg,
union power_supply_propval *val)
{
union power_supply_propval pval;
int rc;
u8 stat;
@ -1212,9 +1213,19 @@ int smblib_get_prop_batt_health(struct smb_charger *chg,
stat);
if (stat & CHARGER_ERROR_STATUS_BAT_OV_BIT) {
smblib_err(chg, "battery over-voltage\n");
val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
goto done;
rc = smblib_get_prop_batt_voltage_now(chg, &pval);
if (!rc) {
/*
* If Vbatt is within 40mV above Vfloat, then don't
* treat it as overvoltage.
*/
if (pval.intval >=
get_effective_result(chg->fv_votable) + 40000) {
val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
smblib_err(chg, "battery over-voltage\n");
goto done;
}
}
}
if (stat & BAT_TEMP_STATUS_TOO_COLD_BIT)