static void chg_thread(struct work_struct *work)
{
int ret;
unsigned int value = 0;
int dets;
if (disable_chg_timer) {
disable_chg_timer = 0;
pmic_set_chg_current(0x8);
queue_delayed_work(chg_wq, &chg_work, 100);
chg_wa_timer = 1;
return;
}
ret = pmic_read_reg(REG_INT_SENSE0, &value, BITFMASK(BIT_CHG_DETS));
if (ret == 0) {
dets = BITFEXT(value, BIT_CHG_DETS);
pr_debug("dets=%d\n", dets);
if (dets == 1) {
pmic_get_chg_value(&value);
pr_debug("average value=%d\n", value);
if ((value <= 3) | ((value & 0x200) != 0)) {
pr_debug("%s: Disable the charger\n", __func__);
pmic_set_chg_current(0);
disable_chg_timer = 1;
}
queue_delayed_work(chg_wq, &chg_work, 100);
chg_wa_timer = 1;
}
}
}
static int pmic_set_charger_current_value(void)
{
//printk("%s %s %d bChargerIsDCDC=%d\n",__FILE__,__func__,__LINE__,bChargerIsDCDC);
if(bChargerIsDCDC){
pmic_set_chg_current(PMIC_SET_DCDC_REG_CHARGE);
}else{
pmic_set_chg_current(PMIC_SET_REG_CHARGE);
}
return 0;
}
static int pmic_restart_charging(void)
{
pmic_set_chg_misc(BAT_TH_CHECK_DIS, 1);
pmic_set_chg_misc(AUTO_CHG_DIS, 0);
pmic_set_chg_misc(VI_PROGRAM_EN, 1);
pmic_set_chg_current(0x8);
pmic_set_chg_misc(RESTART_CHG_STAT, 1);
return 0;
}
static void chg_thread(struct work_struct *work)
{
//unsigned int value = 0;
int charger=0;
int ChargerMA=0;
charger = get_charger_state();
switch(state)
{
case CHG_RESTART:
pmic_restart_charging();
pmic_set_chg_current(0);
if(charger){
if(get_battery_mV()>BATTARY_VOLTAGE_POWEROFF){
init_charger_timer();
pmic_set_charger_current_value();
state = CHG_CHARGING;
}else{
pmic_set_charger_current_value();
msleep(50);
if(get_battery_mA()>240){ /* if PMIC can provide 400mA */
init_charger_timer();
state = CHG_CHARGING;
}else{
state = CHG_POWER_OFF;
}
}
}else{
state = CHG_DISCHARGING;
}
queue_delayed_work(chg_wq, &chg_work, HZ*1);
break;
case CHG_POWER_OFF:
pr_notice("Battery level < 3.0V!\n");
pr_notice("After power off, PMIC will charge up battery.\n");
//pmic_set_chg_current(PMIC_SET_REG_CHARGE); /* charge battery during power off */
pmic_set_charger_current_value();/* charge battery during power off */
orderly_poweroff(1);
break;
case CHG_CHARGING:
reset_charger_timer();
ChargerMA = get_battery_mA();
if(charger_timeout() || (ChargerMA<50)){
pmic_set_chg_current(0);
state = CHG_DISCHARGING_WITH_CHARGER;
}
if(!charger){
pmic_set_chg_current(0);
state = CHG_DISCHARGING;
bProcessSign = false;
}
if((charger) && (ChargerMA > 0) && (ChargerMA < 60)
&& (!bProcessSign) && bNeedReset){
pmic_close_charger_led();
bProcessSign = true;
}
queue_delayed_work(chg_wq, &chg_work, HZ*5);
break;
case CHG_DISCHARGING:
bProcessSign = false;
if(charger)
state = CHG_RESTART;
queue_delayed_work(chg_wq, &chg_work, HZ*10);
break;
case CHG_DISCHARGING_WITH_CHARGER:
if(get_battery_mV() < PMIC_VOLTAGE_MAX_WORK)/*4000*/
state = CHG_RESTART;
if(!charger)
state = CHG_DISCHARGING;
queue_delayed_work(chg_wq, &chg_work, HZ*2);
break;
}
}
static int pmic_battery_probe(struct platform_device *pdev)
{
int retval = 0;
struct mc13892_dev_info *di;
pmic_event_callback_t bat_event_callback;
pmic_version_t pmic_version;
//printk("%s %s %d \n",__FILE__,__func__,__LINE__);
/* Only apply battery driver for MC13892 V2.0 due to ENGR108085 */
pmic_version = pmic_get_version();
if (pmic_version.revision < 20) {
pr_debug("Battery driver is only applied for MC13892 V2.0\n");
return -1;
}
if (machine_is_mx50_arm2()) {
pr_debug("mc13892 charger is not used for this platform\n");
return -1;
}
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di) {
retval = -ENOMEM;
goto di_alloc_failed;
}
di->init_charge = -1;
platform_set_drvdata(pdev, di);
di->charger.name = "mc13892_charger";
di->charger.type = POWER_SUPPLY_TYPE_MAINS;
di->charger.properties = mc13892_charger_props;
di->charger.num_properties = ARRAY_SIZE(mc13892_charger_props);
di->charger.get_property = mc13892_charger_get_property;
retval = power_supply_register(&pdev->dev, &di->charger);
if (retval) {
dev_err(di->dev, "failed to register charger\n");
goto charger_failed;
}
INIT_DELAYED_WORK(&di->monitor_work, mc13892_battery_work);
di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
if (!di->monitor_wqueue) {
retval = -ESRCH;
goto workqueue_failed;
}
queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ * 10);
//queue_delayed_work(di->monitor_wqueue, &di->monitor_work, msecs_to_jiffies(10000));
pmic_stop_coulomb_counter();
pmic_calibrate_coulomb_counter();
//for get correct voltage on the battery when booting with external power.
//chg_thread will change it, when next work (chg_work) is start.
pmic_set_chg_current(0);
INIT_DELAYED_WORK(&di->calc_capacity,mc13892_compute_battery_capacity_from_CC);
queue_delayed_work(di->monitor_wqueue, &di->calc_capacity, 0);
INIT_DELAYED_WORK(&chg_work, chg_thread);
chg_wq = create_singlethread_workqueue("mxc_chg");
if (!chg_wq) {
retval = -ESRCH;
goto workqueue_failed;
}
queue_delayed_work(chg_wq, &chg_work, HZ);
di->dev = &pdev->dev;
di->bat.name = "mc13892_bat";
di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
di->bat.properties = mc13892_battery_props;
di->bat.num_properties = ARRAY_SIZE(mc13892_battery_props);
di->bat.get_property = mc13892_battery_get_property;
di->bat.use_for_apm = 1;
di->battery_status = POWER_SUPPLY_STATUS_UNKNOWN;
//di->battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
retval = power_supply_register(&pdev->dev, &di->bat);
if (retval) {
dev_err(di->dev, "failed to register battery\n");
goto batt_failed;
}
bat_event_callback.func = charger_online_event_callback;
bat_event_callback.param = (void *) di;
pmic_event_subscribe(EVENT_CHGDETI, bat_event_callback);
retval = sysfs_create_file(&pdev->dev.kobj, &dev_attr_enable.attr);
if (retval) {
printk(KERN_ERR
"Battery: Unable to register sysdev entry for Battery");
goto workqueue_failed;
}
chg_wa_is_active = 1;
chg_wa_timer = 0;
disable_chg_timer = 0;
#if defined(PMIC_MC13892_BATTERY_WORK)
work_init();
#endif
goto success;
workqueue_failed:
power_supply_unregister(&di->charger);
charger_failed:
power_supply_unregister(&di->bat);
batt_failed:
kfree(di);
di_alloc_failed:
success:
dev_dbg(di->dev, "%s battery probed!\n", __func__);
return retval;
return 0;
}