static void lpm_mode_check(struct battery_data *battery)
{
extern int charging_mode_from_boot;
pr_info("%s : charging_mode_from_boot(%d), ta_connected(%d)\n",
__func__, charging_mode_from_boot, check_ta_conn(battery));
if (!charging_mode_from_boot)
return;
if (check_ta_conn(battery)) {
battery->charging_mode_booting = 1;
lpm_mode_flag = 1;
pr_info("%s : charging_mode_booting(%d)\n", __func__,
battery->charging_mode_booting);
} else {
pr_info("%s: ta no longer connected, powering off\n", __func__);
if (pm_power_off)
{
#ifdef CONFIG_KERNEL_DEBUG_SEC
kernel_sec_upload_cause_type upload_cause = kernel_sec_get_upload_cause();
if (upload_cause == UPLOAD_CAUSE_INIT)
/* Clear the magic number because it's normal reboot */
kernel_sec_clear_upload_magic_number();
#endif
pm_power_off();
}
}
}
static ssize_t p3_bat_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int x = 0;
int ret = 0;
const ptrdiff_t off = attr - p3_battery_attrs;
switch (off) {
case FORCE_USB_CHARGING:
if (sscanf(buf, "%d\n", &x) == 1) {
if (x == 1)
test_batterydata->info.force_usb_charging = true;
else
test_batterydata->info.force_usb_charging = false;
ret = count;
p3_bat_status_update(&test_batterydata->psy_battery);
}
break;
case BATT_RESET_SOC:
if (sscanf(buf, "%d\n", &x) == 1) {
if (x == 1) {
if (!check_ta_conn(test_batterydata))
fg_reset_soc();
}
ret = count;
}
p3_bat_status_update(&test_batterydata->psy_battery);
pr_debug("Reset SOC:%d ", x);
break;
case BATT_RESET_CAP:
if (sscanf(buf, "%d\n", &x) == 1 ||
x == 2 || x == 3 || x == 4) {
if (x == 1 || x == 2 || x == 3 || x == 4)
fg_reset_capacity();
ret = count;
}
pr_debug("%s: Reset CAP:%d\n", __func__, x);
break;
case BATT_FG_REG:
if (sscanf(buf, "%d\n", &x) == 1) {
if (x == 1)
fg_periodic_read();
ret = count;
}
pr_debug("%s: FG Register:%d\n", __func__, x);
break;
#ifdef CONFIG_SAMSUNG_LPM_MODE
case CHARGING_MODE_BOOTING:
if (sscanf(buf, "%d\n", &x) == 1) {
test_batterydata->charging_mode_booting = x;
ret = count;
}
break;
#endif
default:
ret = -EINVAL;
}
return ret;
}
static void lpm_mode_check(struct battery_data *battery)
{
extern int charging_mode_from_boot;
pr_info("%s : charging_mode_from_boot(%d), ta_connected(%d)\n",
__func__, charging_mode_from_boot, check_ta_conn(battery));
if (!charging_mode_from_boot)
return;
if (check_ta_conn(battery)) {
battery->charging_mode_booting = 1;
lpm_mode_flag = 1;
pr_info("%s : charging_mode_booting(%d)\n", __func__,
battery->charging_mode_booting);
} else {
pr_info("%s: ta no longer connected, powering off\n", __func__);
if (pm_power_off)
pm_power_off();
}
}
static u32 get_charger_status(struct battery_data *battery)
{
if (check_ta_conn(battery)) {
if (battery->current_cable_status == CHARGER_USB)
pr_info("Charger Status : USB\n");
else
pr_info("Charger Status : TA\n");
return 1;
} else {
pr_info("Charger Status : Battery.\n");
return 0;
}
}
static void p3_bat_status_update(struct power_supply *bat_ps)
{
struct battery_data *battery = container_of(bat_ps,
struct battery_data, psy_battery);
int old_level, old_temp, old_health, old_is_full;
int current_charging_status;
if (!battery->p3_battery_initial)
return;
mutex_lock(&battery->work_lock);
old_temp = battery->info.batt_temp;
old_health = battery->info.batt_health;
old_level = battery->info.level;
old_is_full = battery->info.batt_is_full;
battery->info.batt_temp = p3_get_bat_temp(bat_ps);
battery->info.level = p3_get_bat_level(bat_ps);
if (!battery->info.charging_enabled &&
!battery->info.batt_is_full &&
!check_jig_on()) {
if (battery->info.level > old_level)
battery->info.level = old_level;
}
battery->info.batt_vol = p3_get_bat_vol(bat_ps);
current_charging_status =
gpio_get_value(battery->pdata->charger.fullcharge_line);
if (current_charging_status >= 0) {
if (check_ta_conn(battery) &&
battery->previous_charging_status == 0 &&
current_charging_status == 1) {
pr_debug("BATTERY FULL");
cancel_delayed_work(&battery->fullcharging_work);
schedule_delayed_work(&battery->fullcharging_work,
msecs_to_jiffies(300));
wake_lock_timeout(&battery->fullcharge_wake_lock,
HZ * 30);
}
battery->previous_charging_status = current_charging_status;
}
power_supply_changed(bat_ps);
pr_debug("call power_supply_changed");
mutex_unlock(&battery->work_lock);
}
static void p3_get_cable_status(struct battery_data *battery)
{
if (check_ta_conn(battery)) {
if (battery->pdata->check_dedicated_charger())
battery->current_cable_status = CHARGER_AC;
else
battery->current_cable_status = CHARGER_USB;
set_irq_type(gpio_to_irq(battery->pdata->charger.connect_line),
IRQ_TYPE_LEVEL_HIGH);
if (battery->pdata->inform_charger_connection)
battery->pdata->inform_charger_connection(true);
} else {
battery->current_cable_status = CHARGER_BATTERY;
set_irq_type(gpio_to_irq(battery->pdata->charger.connect_line),
IRQ_TYPE_LEVEL_LOW);
if (battery->pdata->inform_charger_connection)
battery->pdata->inform_charger_connection(false);
battery->info.batt_improper_ta = 0; // clear flag
}
pr_info("%s: current_status : %d\n", __func__, battery->current_cable_status);
}
static int p3_get_bat_level(struct power_supply *bat_ps)
{
struct battery_data *battery = container_of(bat_ps,
struct battery_data, psy_battery);
int fg_soc;
int fg_vfsoc;
int fg_vcell;
int fg_current;
int avg_current;
int recover_flag = 0;
recover_flag = fg_check_cap_corruption();
/* check VFcapacity every five minutes */
if (!(battery->fg_chk_cnt++ % 10)) {
fg_check_vf_fullcap_range();
battery->fg_chk_cnt = 1;
}
fg_soc = get_fuelgauge_value(FG_LEVEL);
if (fg_soc < 0) {
pr_info("Can't read soc!!!");
fg_soc = battery->info.level;
}
if (!check_jig_on() && !max17042_chip_data->info.low_batt_comp_flag) {
if (((fg_soc+5) < max17042_chip_data->info.previous_repsoc) ||
(fg_soc > (max17042_chip_data->info.previous_repsoc+5)))
battery->fg_skip = 1;
}
/* skip one time (maximum 30 seconds) because of corruption. */
if (battery->fg_skip) {
pr_info("%s: skip update until corruption check "
"is done (fg_skip_cnt:%d)\n",
__func__, ++battery->fg_skip_cnt);
fg_soc = battery->info.level;
if (recover_flag || battery->fg_skip_cnt > 10) {
battery->fg_skip = 0;
battery->fg_skip_cnt = 0;
}
}
if (battery->low_batt_boot_flag) {
fg_soc = 0;
if (check_ta_conn(battery) && !check_UV_charging_case()) {
fg_adjust_capacity();
battery->low_batt_boot_flag = 0;
}
if (!check_ta_conn(battery))
battery->low_batt_boot_flag = 0;
}
fg_vcell = get_fuelgauge_value(FG_VOLTAGE);
if (fg_vcell < 0) {
pr_info("Can't read vcell!!!");
fg_vcell = battery->info.batt_vol;
} else
battery->info.batt_vol = fg_vcell;
fg_current = get_fuelgauge_value(FG_CURRENT);
avg_current = get_fuelgauge_value(FG_CURRENT_AVG);
fg_vfsoc = get_fuelgauge_value(FG_VF_SOC);
// Algorithm for reducing time to fully charged (from MAXIM)
if(battery->info.charging_enabled && // Charging is enabled
!battery->info.batt_is_recharging && // Not Recharging
battery->info.charging_source == CHARGER_AC && // Only AC (Not USB cable)
!battery->is_first_check && // Skip when first check after boot up
(fg_vfsoc>70 && (fg_current>20 && fg_current<250) &&
(avg_current>20 && avg_current<260))) {
if(battery->full_check_flag == 2) {
pr_info("%s: force fully charged SOC !! (%d)", __func__, battery->full_check_flag);
fg_set_full_charged();
fg_soc = get_fuelgauge_value(FG_LEVEL);
}
else if(battery->full_check_flag < 2)
pr_info("%s: full_check_flag (%d)", __func__, battery->full_check_flag);
if(battery->full_check_flag++ > 10000) // prevent overflow
battery->full_check_flag = 3;
}
else
battery->full_check_flag = 0;
if (battery->info.charging_source == CHARGER_AC &&
battery->info.batt_improper_ta == 0) {
if (is_over_abs_time(battery)) {
fg_soc = 100;
battery->info.batt_is_full = 1;
pr_info("%s: charging time is over", __func__);
pr_info("%s: fg_vcell = %d, fg_soc = %d,"
" is_full = %d\n",
__func__, fg_vcell, fg_soc,
battery->info.batt_is_full);
p3_set_chg_en(battery, 0);
goto __end__;
}
}
if (fg_vcell <= battery->pdata->recharge_voltage) {
if (battery->info.batt_is_full &&
!battery->info.charging_enabled) {
if (++battery->recharging_cnt > 1) {
pr_info("recharging(under full)");
battery->info.batt_is_recharging = 1;
p3_set_chg_en(battery, 1);
battery->recharging_cnt = 0;
pr_info("%s: fg_vcell = %d, fg_soc = %d,"
" is_recharging = %d\n",
__func__, fg_vcell, fg_soc,
battery->info.batt_is_recharging);
}
} else
battery->recharging_cnt = 0;
} else
battery->recharging_cnt = 0;
if (fg_soc > 100)
fg_soc = 100;
/* Checks vcell level and tries to compensate SOC if needed.*/
/* If jig cable is connected, then skip low batt compensation check. */
if (!check_jig_on() && !battery->info.charging_enabled)
fg_soc = p3_low_batt_compensation(fg_soc, fg_vcell, fg_current);
__end__:
pr_debug("fg_vcell = %d, fg_soc = %d, is_full = %d",
fg_vcell, fg_soc, battery->info.batt_is_full);
if(battery->is_first_check)
battery->is_first_check = false;
if (battery->info.batt_is_full &&
(battery->info.charging_source != CHARGER_USB))
fg_soc = 100;
#if 0 // not used
else {
if (fg_soc >= 100)
fg_soc = 99;
}
#endif
return fg_soc;
}
static int __devinit p3_bat_probe(struct platform_device *pdev)
{
struct p3_battery_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct battery_data *battery;
int ret;
unsigned long trigger;
int irq_num;
battery = kzalloc(sizeof(*battery), GFP_KERNEL);
if (!battery)
return -ENOMEM;
battery->pdata = pdata;
if (!battery->pdata) {
pr_err("%s : No platform data\n", __func__);
return -EINVAL;
}
battery->pdata->init_charger_gpio();
platform_set_drvdata(pdev, battery);
test_batterydata = battery;
battery->present = 1;
battery->info.level = 100;
battery->info.charging_source = CHARGER_BATTERY;
battery->info.batt_health = POWER_SUPPLY_HEALTH_GOOD;
battery->is_first_check = true;
battery->psy_battery.name = "battery";
battery->psy_battery.type = POWER_SUPPLY_TYPE_BATTERY;
battery->psy_battery.properties = p3_battery_properties;
battery->psy_battery.num_properties = ARRAY_SIZE(p3_battery_properties);
battery->psy_battery.get_property = p3_bat_get_property;
battery->psy_usb.name = "usb";
battery->psy_usb.type = POWER_SUPPLY_TYPE_USB;
battery->psy_usb.supplied_to = supply_list;
battery->psy_usb.num_supplicants = ARRAY_SIZE(supply_list);
battery->psy_usb.properties = p3_power_properties;
battery->psy_usb.num_properties = ARRAY_SIZE(p3_power_properties);
battery->psy_usb.get_property = p3_usb_get_property;
battery->psy_ac.name = "ac";
battery->psy_ac.type = POWER_SUPPLY_TYPE_MAINS;
battery->psy_ac.supplied_to = supply_list;
battery->psy_ac.num_supplicants = ARRAY_SIZE(supply_list);
battery->psy_ac.properties = p3_power_properties;
battery->psy_ac.num_properties = ARRAY_SIZE(p3_power_properties);
battery->psy_ac.get_property = p3_ac_get_property;
mutex_init(&battery->work_lock);
wake_lock_init(&battery->vbus_wake_lock, WAKE_LOCK_SUSPEND,
"vbus wake lock");
wake_lock_init(&battery->work_wake_lock, WAKE_LOCK_SUSPEND,
"batt_work wake lock");
wake_lock_init(&battery->cable_wake_lock, WAKE_LOCK_SUSPEND,
"temp wake lock");
wake_lock_init(&battery->fullcharge_wake_lock, WAKE_LOCK_SUSPEND,
"fullcharge wake lock");
#ifdef __TEST_DEVICE_DRIVER__
wake_lock_init(&battery->wake_lock_for_dev, WAKE_LOCK_SUSPEND,
"test mode wake lock");
#endif /* __TEST_DEVICE_DRIVER__ */
INIT_WORK(&battery->battery_work, p3_bat_work);
INIT_WORK(&battery->cable_work, p3_cable_work);
INIT_DELAYED_WORK(&battery->fuelgauge_work, fuelgauge_work_handler);
INIT_DELAYED_WORK(&battery->fullcharging_work,
fullcharging_work_handler);
INIT_DELAYED_WORK(&battery->full_comp_work, full_comp_work_handler);
INIT_DELAYED_WORK(&battery->TA_work, p3_TA_work_handler);
battery->p3_TA_workqueue = create_singlethread_workqueue(
"p3_TA_workqueue");
if (!battery->p3_TA_workqueue) {
pr_err("Failed to create single workqueue\n");
ret = -ENOMEM;
goto err_workqueue_init;
}
battery->last_poll = alarm_get_elapsed_realtime();
alarm_init(&battery->alarm, ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP,
p3_battery_alarm);
ret = power_supply_register(&pdev->dev, &battery->psy_battery);
if (ret) {
pr_err("Failed to register battery power supply.\n");
goto err_battery_psy_register;
}
ret = power_supply_register(&pdev->dev, &battery->psy_usb);
if (ret) {
pr_err("Failed to register USB power supply.\n");
goto err_usb_psy_register;
}
ret = power_supply_register(&pdev->dev, &battery->psy_ac);
if (ret) {
pr_err("Failed to register AC power supply.\n");
goto err_ac_psy_register;
}
/* create sec detail attributes */
p3_bat_create_attrs(battery->psy_battery.dev);
#ifdef __TEST_DEVICE_DRIVER__
sec_batt_test_create_attrs(battery->psy_ac.dev);
#endif /* __TEST_DEVICE_DRIVER__ */
battery->p3_battery_initial = 1;
battery->low_batt_boot_flag = 0;
battery->connect_irq = gpio_to_irq(pdata->charger.connect_line);
if (check_ta_conn(battery))
trigger = IRQF_TRIGGER_HIGH;
else
trigger = IRQF_TRIGGER_LOW;
if (request_irq(battery->connect_irq, p3_TA_interrupt_handler, trigger,
"TA_CON intr", battery)) {
pr_err("p3_TA_interrupt_handler register failed!\n");
goto err_charger_irq;
}
disable_irq(battery->connect_irq);
// Get initial cable status and enable connection irq.
p3_get_cable_status(battery);
battery->previous_cable_status = battery->current_cable_status;
enable_irq(battery->connect_irq);
if (check_ta_conn(battery) && check_UV_charging_case())
battery->low_batt_boot_flag = 1;
mutex_lock(&battery->work_lock);
fg_alert_init();
mutex_unlock(&battery->work_lock);
p3_bat_status_update(&battery->psy_battery);
p3_cable_check_status(battery);
/* before enable fullcharge interrupt, check fullcharge */
if (battery->info.charging_source == CHARGER_AC
&& battery->info.charging_enabled
&& gpio_get_value(pdata->charger.fullcharge_line) == 1)
p3_cable_charging(battery);
/* Request IRQ */
irq_num = gpio_to_irq(max17042_chip_data->pdata->fuel_alert_line);
if (request_irq(irq_num, low_battery_isr,
IRQF_TRIGGER_FALLING, "FUEL_ALRT irq", battery))
pr_err("Can NOT request irq 'IRQ_FUEL_ALERT' %d ", irq_num);
#ifdef CONFIG_SAMSUNG_LPM_MODE
lpm_mode_check(battery);
#endif
return 0;
err_charger_irq:
alarm_cancel(&battery->alarm);
power_supply_unregister(&battery->psy_ac);
err_ac_psy_register:
power_supply_unregister(&battery->psy_usb);
err_usb_psy_register:
power_supply_unregister(&battery->psy_battery);
err_battery_psy_register:
destroy_workqueue(battery->p3_TA_workqueue);
err_workqueue_init:
wake_lock_destroy(&battery->vbus_wake_lock);
wake_lock_destroy(&battery->work_wake_lock);
wake_lock_destroy(&battery->cable_wake_lock);
wake_lock_destroy(&battery->fullcharge_wake_lock);
mutex_destroy(&battery->work_lock);
kfree(battery);
return ret;
}
