static void bq2416x_start_ac_charger(struct bq2416x_device_info *di)
{
long int events = BQ2416x_START_AC_CHARGING;
/*set gpio_174 low level for CD pin to enable bq24161 IC*/
gpio_set_value(ENABLE_BQ2416x_CHARGER, 0);
blocking_notifier_call_chain(¬ifier_list, events, NULL);
di->charger_source = POWER_SUPPLY_TYPE_MAINS;
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
di->calling_limit = 0;
di->factory_flag = 0;
di->battery_temp_status = -1;
di->dppm_voltagemV = VINDPM_MIN_4200;
di->cin_limit = di->max_cin_currentmA;
di->currentmA = di->max_currentmA ;
di->voltagemV = di->max_voltagemV;
di->term_currentmA = ITERM_MIN_50;
di->enable_ce = ENABLE_CHARGER; /*enable charger*/
di->enable_iterm = ENABLE_ITERM; /*enable charge current termination*/
di->hz_mode = DIS_HIZ;
di->safety_timer = TMR_X_9;
di->enable_low_chg = DISABLE_LOW_CHG;
bq2416x_config_control_reg(di);
bq2416x_config_voltage_reg(di);
bq2416x_config_current_reg(di);
bq2416x_config_dppm_voltage_reg(di,di->dppm_voltagemV);
bq2416x_config_safety_reg(di);
bq2416x_config_watchdog_reg(di);
schedule_delayed_work(&di->bq2416x_charger_work,
msecs_to_jiffies(0));
dev_info(di->dev,"%s, ---->START AC CHARGING, \n"
"battery current = %d mA\n"
"battery voltage = %d mV\n"
, __func__, di->currentmA, di->voltagemV);
di->battery_present = is_bq27510_battery_exist(g_battery_measure_by_bq27510_device);
if (!di->battery_present){
dev_info(di->dev, "BATTERY NOT DETECTED!\n");
events = BQ2416x_NOT_CHARGING;
blocking_notifier_call_chain(¬ifier_list, events, NULL);
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
}
di->wakelock_enabled = 1;
if (di->wakelock_enabled)
wake_lock(&di->charger_wake_lock);
return;
}
static void
bq2416x_charger_update_status(struct bq2416x_device_info *di)
{
u8 read_reg[8] = {0};
timer_fault = 0;
bq2416x_read_block(di, &read_reg[0], 0, 8);
if ((read_reg[0] & 0x70) == 0x50)
dev_dbg(di->dev, "CHARGE DONE\n");
if ((read_reg[0] & 0x7) == 0x4)
timer_fault = 1;
if (read_reg[0] & 0x7) {
di->cfg_params = 1;
dev_err(di->dev, "CHARGER STATUS = %x\n", read_reg[0]);
}
if ((read_reg[1] & 0x6) == 0x2) {
di->hz_mode = 1;
bq2416x_config_control_reg(di);
bq2416x_write_byte(di, di->voltage_reg, REG_BATTERY_VOLTAGE);
dev_err(di->dev, "battery ovp = %x,%x\n", read_reg[1],read_reg[3]);
msleep(700);
di->hz_mode = 0;
bq2416x_config_control_reg(di);
}
if (is_bq27510_battery_exist(g_battery_measure_by_bq27510_device)){
bq2416x__charge_status(di);
}
if ((timer_fault == 1) || (di->cfg_params == 1)) {
bq2416x_write_byte(di, di->control_reg, REG_CONTROL_REGISTER);
bq2416x_write_byte(di, di->voltage_reg, REG_BATTERY_VOLTAGE);
bq2416x_write_byte(di, di->current_reg, REG_BATTERY_CURRENT);
bq2416x_write_byte(di, di->dppm_reg, REG_DPPM_VOLTAGE);
bq2416x_config_safety_reg(di);
di->cfg_params = 0;
}
/* reset 32 second timer */
bq2416x_config_status_reg(di);
return;
}
static void bq2416x_start_ac_charger(struct bq2416x_device_info *di)
{
long int events;
/*set gpio_174 low level for CD pin to enable bq24161 IC*/
gpio_set_value(BQ2416X_GPIO_174, 0);
events = BQ2416x_START_AC_CHARGING;
blocking_notifier_call_chain(¬ifier_list, events, NULL);
di->enable_ce = ENABLE_CE; /*enable charger*/
di->enable_iterm = ENABLE_ITERM; /*enable charge current termination*/
if(! g_battery_measure_by_bq27510_device)
return ;
di->charger_source = POWER_SUPPLY_TYPE_MAINS;
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
di->calling_limit = set_zero;
di->dppm_voltagemV = VOLT_DPPM_ADJUST_AC;
di->cin_limit = CURRENT_AC_LIMIT_IN;
di->currentmA = di->max_currentmA ;
bq2416x_config_control_reg(di);
bq2416x_config_voltage_reg(di);
bq2416x_config_current_reg(di);
bq2416x_config_dppm_voltage_reg(di,di->dppm_voltagemV);
#if BQ2416X_USE_WAKE_LOCK
wake_lock(&di->charger_wake_lock);
#endif
schedule_delayed_work(&di->bq2416x_charger_work,
msecs_to_jiffies(0));
dev_info(di->dev,"%s, ---->START AC CHARGING, \n"
"battery current = %d mA\n"
"battery voltage = %d mV\n"
, __func__, di->currentmA, di->voltagemV);
if (!is_bq27510_battery_exist(g_battery_measure_by_bq27510_device)){
dev_dbg(di->dev, "BATTERY NOT DETECTED!\n");
events = BQ2416x_NOT_CHARGING;
blocking_notifier_call_chain(¬ifier_list, events, NULL);
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
di->enable_low_chg = DISABLE_LOW_CHG;
bq2416x_config_safety_reg(di);
}
}
/*small current charging(100mA) when low battery voltage or low battery temprature*/
static void
bq2416x_low_current_charge(struct bq2416x_device_info *di)
{
int battery_voltage = 0;
int battery_temperature = 0;
if (!is_bq27510_battery_exist(g_battery_measure_by_bq27510_device))
return;
battery_voltage = bq27510_battery_voltage(g_battery_measure_by_bq27510_device);
battery_temperature = bq27510_battery_temperature(g_battery_measure_by_bq27510_device);
if (battery_temperature < BQ2416x_COLD_BATTERY_THRESHOLD){
dev_dbg(di->dev, "battery temp less than -10 degree,disable charging\n");
di->enable_ce = DISABLE_CE;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
if(di->calling_limit){
di->cin_limit = CURRENT_AC_LIMIT_IN_800;
}
else{
di->cin_limit = CURRENT_AC_LIMIT_IN;
}
}
else
di->cin_limit = CURRENT_USB_LIMIT_IN;
}
else if ((battery_temperature >= BQ2416x_COLD_BATTERY_THRESHOLD)
&& (battery_temperature < BQ2416x_COOL_BATTERY_THRESHOLD)){
/*battery temp is between -10 and 0 degree,or battery voltage is less than 3.0V*/
di->enable_low_chg = ENABLE_LOW_CHG;/*enable low charge,100mA charging*/
bq2416x_config_safety_reg(di);
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
if(di->calling_limit){
di->cin_limit = CURRENT_AC_LIMIT_IN_800;
}
else{
di->cin_limit = CURRENT_AC_LIMIT_IN;
}
}
else
di->cin_limit = CURRENT_USB_LIMIT_IN;
if(battery_voltage < BQ2416x_LOW_TEMP_TERM_VOLTAGE){
di->enable_ce = ENABLE_CE;
}
else{
di->enable_ce = DISABLE_CE;
}
}
else if ((battery_temperature >= BQ2416x_COOL_BATTERY_THRESHOLD)
&& (battery_temperature < (BQ2416x_WARM_BATTERY_THRESHOLD - TEMPERATURE_OFFSET))){
/*battery temp is between 00 and 50 degree,normal charge*/
di->enable_low_chg = DISABLE_LOW_CHG;/*normal charge*/
bq2416x_config_safety_reg(di);
di->enable_ce = ENABLE_CE;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
if(di->calling_limit){
di->cin_limit = CURRENT_AC_LIMIT_IN_800;
}
else{
di->cin_limit = CURRENT_AC_LIMIT_IN;
}
}
else
di->cin_limit = CURRENT_USB_LIMIT_IN;
}
else if ((battery_temperature >= BQ2416x_WARM_BATTERY_THRESHOLD)
&& (battery_temperature < BQ2416x_HOT_BATTERY_THRESHOLD )){
/*battery temp is between 00 and 50 degree,normal charge*/
di->enable_low_chg = DISABLE_LOW_CHG;/*normal charge*/
bq2416x_config_safety_reg(di);
di->enable_ce = ENABLE_CE;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS)
di->cin_limit = CURRENT_AC_LIMIT_IN_800;
else
di->cin_limit = CURRENT_USB_LIMIT_IN;
}
else if (battery_temperature >= BQ2416x_HOT_BATTERY_THRESHOLD)
{
dev_dbg(di->dev, "battery temp more than 50 degree,disable charging\n");
di->enable_ce = DISABLE_CE;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS)
di->cin_limit = CURRENT_AC_LIMIT_IN_800;
else
di->cin_limit = CURRENT_USB_LIMIT_IN;
}
else{
di->cin_limit = di->cin_limit;
}
di->enable_ce = (di->enable_ce | di->factory_flag);
bq2416x_config_control_reg(di);
return;
}
static int __devinit bq2416x_charger_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct bq2416x_device_info *di;
struct bq2416x_platform_data *pdata = client->dev.platform_data;
int ret;
u8 read_reg = 0;
enum plugin_status plugin_stat;
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di)
return -ENOMEM;
di->dev = &client->dev;
di->client = client;
i2c_set_clientdata(client, di);
ret = bq2416x_read_byte(di, &read_reg, REG_PART_REVISION);
if (ret < 0) {
dev_err(&client->dev, "chip not present at address %x\n",
client->addr);
ret = -EINVAL;
goto err_kfree;
}
#if 0
if ((read_reg & 0x18) == 0x00 && (client->addr == 0x6a))
di->bqchip_version = BQ24156;
#endif
if ((read_reg & 0x18) == 0x00 && (client->addr == 0x6b))
di->bqchip_version = BQ24161;
if (di->bqchip_version == 0) {
dev_dbg(&client->dev, "unknown bq chip\n");
dev_dbg(&client->dev, "Chip address %x", client->addr);
dev_dbg(&client->dev, "bq chip version reg value %x", read_reg);
ret = -EINVAL;
goto err_kfree;
}
// di->nb.notifier_call = bq2416x_charger_event;
#if 0
bq2415x_config_safety_reg(di, pdata->max_charger_currentmA,
pdata->max_charger_voltagemV);
di->cin_limit = 900;
di->term_currentmA = pdata->termination_currentmA;
bq2415x_config_control_reg(di);
bq2415x_config_voltage_reg(di);
bq2415x_config_current_reg(di);
#endif
/*set gpio_174 to control CD pin to disable/enable bq24161 IC*/
gpio_request(BQ2416X_GPIO_174, "gpio_174_cd");
/* set charger CD pin to low level and enable it to supply power normally*/
gpio_direction_output(BQ2416X_GPIO_174, 0);
ret = bq2416x_get_max_charge_voltage(di);
if(!ret){
di->max_voltagemV = pdata->max_charger_voltagemV;
}
di->voltagemV = di->max_voltagemV;
ret = bq2416x_get_max_charge_current(di);
if(!ret){
di->max_currentmA = pdata->max_charger_currentmA;
}
di->currentmA = CURRENT_USB_CHARGE_IN ;
di->term_currentmA = CURRENT_TERM_CHARGE_IN;
di->dppm_voltagemV = VOLT_DPPM_ADJUST;
di->cin_limit = CURRENT_USB_LIMIT_IN;
di->enable_hotcold_temp_charge = set_one;
di->enable_low_chg = DISABLE_LOW_CHG;/*set normally charge mode*/
di->enable_iterm = ENABLE_ITERM; /*enable charge current termination*/
di->factory_flag = 0;
di->enable_ce = ENABLE_CE;
di->hz_mode = 0;
di->cd_active = 0;
INIT_DELAYED_WORK_DEFERRABLE(&di->bq2416x_charger_work,
bq2416x_charger_work);
#if BQ2416X_USE_WAKE_LOCK
wake_lock_init(&di->charger_wake_lock, WAKE_LOCK_SUSPEND, "charger_wake_lock");
#endif
//BLOCKING_INIT_NOTIFIER_HEAD(¬ifier_list);
di->active = 0;
di->params.enable = 1;
di->cfg_params = 1;
bq2416x_config_control_reg(di);
bq2416x_config_voltage_reg(di);
bq2416x_config_current_reg(di);
bq2416x_config_dppm_voltage_reg(di,di->dppm_voltagemV);
bq2416x_config_safety_reg(di);
#if 0
ret = bq2416x_read_byte(di, &read_reg, REG_SPECIAL_CHARGER_VOLTAGE);
if (!(read_reg & 0x08)) {
di->active = 1;
schedule_delayed_work(&di->bq2415x_charger_work, 0);
}
#endif
ret = sysfs_create_group(&client->dev.kobj, &bq2416x_attr_group);
if (ret)
dev_dbg(&client->dev, "could not create sysfs files\n");
//twl6030_register_notifier(&di->nb, 1);
INIT_WORK(&di->usb_work, bq2416x_usb_charger_work);
//r00186667, 2011/08/02, otg register for receive USB/AC plugin event.begin
di->nb_otg.notifier_call = bq2416x_usb_notifier_call;
di->otg = otg_get_transceiver();
ret = otg_register_notifier(di->otg, &di->nb_otg);
if (ret)
dev_err(&client->dev, "otg register notifier failed %d\n", ret);
//r00186667, 2011/08/02, otg register for receive USB/AC plugin event.end
//r00186667, 2011/08/02, get the boot event type.begin
plugin_stat = get_plugin_device_status();
if( PLUGIN_USB_CHARGER == plugin_stat){
di->event = USB_EVENT_VBUS;
}else if (PLUGIN_AC_CHARGER == plugin_stat){
di->event = USB_EVENT_CHARGER;
}else{
di->event = USB_EVENT_NONE;
}
schedule_work(&di->usb_work);
//r00186667, 2011/08/02, get the boot event type.end
return 0;
err_kfree:
kfree(di);
return ret;
}
static void
bq2416x_charger_update_status(struct bq2416x_device_info *di)
{
u8 read_reg[8] = {0};
long int events=BQ2416x_START_CHARGING;
static int battery_capacity = 0;
di->timer_fault = 0;
bq2416x_read_block(di, &read_reg[0], 0, 8);
if((read_reg[1] & BQ2416x_FAULT_VBUS_VUVLO) == BQ2416x_FAULT_VBUS_OVP){
dev_err(di->dev, "bq2416x charger over voltage = %x\n",read_reg[1]);
events = POWER_SUPPLY_OVERVOLTAGE;
blocking_notifier_call_chain(¬ifier_list, events, NULL);
}
if ((read_reg[0] & BQ2416x_CHARGE_FAULT) == BQ2416x_STATUS_CHARGE_DONE){
dev_dbg(di->dev, "CHARGE DONE\n");
battery_capacity = bq27510_battery_capacity(g_battery_measure_by_bq27510_device);
if (((!is_bq27510_battery_full(g_battery_measure_by_bq27510_device))||(battery_capacity!=100))&& (di->battery_present)){
dev_info(di->dev, "charge_done_battery_capacity=%d\n",battery_capacity);
di->hz_mode = EN_HIZ;
bq2416x_write_byte(di, di->control_reg02 | di->hz_mode, REG_CONTROL_REGISTER_REG02);
msleep(500);
di->hz_mode = DIS_HIZ;
bq2416x_config_control_reg(di);
events = BQ2416x_START_CHARGING;
}else{
events = BQ2416x_CHARGE_DONE;
}
blocking_notifier_call_chain(¬ifier_list, events, NULL);
}
if ((read_reg[0] & BQ2416x_FAULT_BATTERY) == BQ2416x_FAULT_WATCHDOG_TIMER){
di->timer_fault = 1;
}
if ((read_reg[0] & BQ2416x_FAULT_BATTERY) == BQ2416x_FAULT_SAFETY_TIMER)
di->timer_fault = 1;
if (read_reg[0] & BQ2416x_FAULT_BATTERY) {
di->cfg_params = 1;
dev_err(di->dev, "CHARGER STATUS %x\n", read_reg[0]);
}
if ((read_reg[1] & 0x6) == BQ2416x_FAULT_BAT_OVP) {
gpio_set_value(ENABLE_BQ2416x_CHARGER, 1);
dev_err(di->dev, "battery ovp = %x,%x\n", read_reg[1],read_reg[3]);
msleep(1000);
gpio_set_value(ENABLE_BQ2416x_CHARGER, 0);
}
if ((di->timer_fault == 1) || (di->cfg_params == 1)) {
bq2416x_write_byte(di, di->control_reg02, REG_CONTROL_REGISTER_REG02);
bq2416x_write_byte(di, di->voltage_reg03, REG_BATTERY_VOLTAGE_REG03);
bq2416x_write_byte(di, di->current_reg05, REG_BATTERY_CURRENT_REG05);
bq2416x_write_byte(di, di->dppm_reg06, REG_DPPM_VOLTAGE_REG06);
bq2416x_config_safety_reg(di);
di->cfg_params = 0;
}
/* reset 32 second timer */
bq2416x_config_status_reg(di);
return;
}
static void bq2416x_monitor_battery_ntc_charging(struct bq2416x_device_info *di)
{
int battery_voltage = 0;
int battery_status = 0;
long int events = BQ2416x_START_CHARGING;
if(!di->battery_present){
blocking_notifier_call_chain(¬ifier_list, BQ2416x_NOT_CHARGING, NULL);
return;
}
battery_voltage = bq27510_battery_voltage(g_battery_measure_by_bq27510_device);
//battery_voltage = battery_voltage/VOLTAGE_MULTIPLE;
battery_status = bq2416x_check_battery_temperature_threshold();
switch (battery_status) {
case BATTERY_HEALTH_TEMPERATURE_OVERLOW:
di->enable_ce = DISABLE_CHARGER;
break;
case BATTERY_HEALTH_TEMPERATURE_LOW:
if(battery_voltage > BQ2416x_LOW_TEMP_TERM_VOLTAGE){
di->enable_ce = DISABLE_CHARGER;
}else{
di->enable_ce = ENABLE_CHARGER;
}
di->enable_low_chg = ENABLE_LOW_CHG;
break;
case BATTERY_HEALTH_TEMPERATURE_NORMAL:
di->enable_ce = ENABLE_CHARGER;
di->enable_low_chg = DISABLE_LOW_CHG;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
bq2416x_calling_limit_ac_input_current(di,0);
}
break;
case BATTERY_HEALTH_TEMPERATURE_NORMAL_HIGH:
di->enable_ce = ENABLE_CHARGER;
di->enable_low_chg = DISABLE_LOW_CHG;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
if(di->battery_temp_status == BATTERY_HEALTH_TEMPERATURE_NORMAL){
bq2416x_calling_limit_ac_input_current(di,0);
}else{
di->cin_limit = di->cin_limit;
}
}
break;
case BATTERY_HEALTH_TEMPERATURE_HIGH:
di->enable_ce = ENABLE_CHARGER;
di->enable_low_chg = DISABLE_LOW_CHG;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
di->cin_limit = IINLIM_800;
}
break;
case BATTERY_HEALTH_TEMPERATURE_OVERHIGH:
di->enable_ce = DISABLE_CHARGER;
di->enable_low_chg = DISABLE_LOW_CHG;
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS){
di->cin_limit = IINLIM_800;
}
break;
default:
break;
}
di->enable_ce = di->enable_ce | di->factory_flag;
if(!di->enable_ce){
events = BQ2416x_START_CHARGING;
}else{
events = BQ2416x_NOT_CHARGING;
}
bq2416x_config_control_reg(di);
bq2416x_config_safety_reg(di);
di->battery_temp_status = battery_status;
blocking_notifier_call_chain(¬ifier_list, events, NULL);
return;
}
static int __devinit bq2416x_charger_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct bq2416x_device_info *di;
struct bq2416x_platform_data *pdata = client->dev.platform_data;
int ret;
u8 read_reg = 0;
enum plugin_status plugin_stat;
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di)
return -ENOMEM;
di->dev = &client->dev;
di->client = client;
i2c_set_clientdata(client, di);
ret = bq2416x_read_byte(di, &read_reg, REG_PART_REVISION_REG04);
if (ret < 0) {
dev_err(&client->dev, "chip not present at address %x\n",
client->addr);
ret = -EINVAL;
goto err_kfree;
}
if ((read_reg & 0x18) == 0x00 && (client->addr == 0x6b))
di->bqchip_version = BQ24161;
if (di->bqchip_version == 0) {
dev_dbg(&client->dev, "unknown bq chip\n");
dev_dbg(&client->dev, "Chip address %x", client->addr);
dev_dbg(&client->dev, "bq chip version reg value %x", read_reg);
ret = -EINVAL;
goto err_kfree;
}
// di->nb.notifier_call = bq2416x_charger_event;
/*set gpio_174 to control CD pin to disable/enable bq24161 IC*/
gpio_request(ENABLE_BQ2416x_CHARGER, "gpio_174_cd");
/* set charger CD pin to low level and enable it to supply power normally*/
gpio_direction_output(ENABLE_BQ2416x_CHARGER, 0);
ret = bq2416x_get_max_charge_voltage(di);
if(!ret){
di->max_voltagemV = pdata->max_charger_voltagemV;
}
ret = bq2416x_get_max_charge_current(di);
if(!ret){
di->max_currentmA = pdata->max_charger_currentmA;
}
di->max_cin_currentmA = IINLIM_1000;
di->voltagemV = di->max_voltagemV;
di->currentmA = ICHG_MIN_550 ;
di->term_currentmA = ITERM_MIN_50;
di->dppm_voltagemV = VINDPM_MIN_4200;
di->cin_limit = IINLIM_500;
di->safety_timer = TMR_X_9;
di->enable_low_chg = DISABLE_LOW_CHG;/*set normally charge mode*/
di->enable_iterm = ENABLE_ITERM; /*enable charge current termination*/
di->supply_sel = SUPPLY_SEL_IN;
di->factory_flag = 0;
di->enable_ce = ENABLE_CHARGER;
di->hz_mode = DIS_HIZ;
di->cd_active = 0;
INIT_DELAYED_WORK_DEFERRABLE(&di->bq2416x_charger_work,
bq2416x_charger_work);
wake_lock_init(&di->charger_wake_lock, WAKE_LOCK_SUSPEND, "charger_wake_lock");
//BLOCKING_INIT_NOTIFIER_HEAD(¬ifier_list);
di->params.enable = 1;
di->cfg_params = 1;
bq2416x_config_control_reg(di);
bq2416x_config_voltage_reg(di);
bq2416x_config_current_reg(di);
bq2416x_config_dppm_voltage_reg(di,di->dppm_voltagemV);
bq2416x_config_safety_reg(di);
ret = sysfs_create_group(&client->dev.kobj, &bq2416x_attr_group);
if (ret)
dev_dbg(&client->dev, "could not create sysfs files\n");
//twl6030_register_notifier(&di->nb, 1);
INIT_WORK(&di->usb_work, bq2416x_usb_charger_work);
di->nb_otg.notifier_call = bq2416x_usb_notifier_call;
di->otg = otg_get_transceiver();
ret = otg_register_notifier(di->otg, &di->nb_otg);
if (ret)
dev_err(&client->dev, "otg register notifier failed %d\n", ret);
plugin_stat = get_plugin_device_status();
if( PLUGIN_USB_CHARGER == plugin_stat){
di->event = USB_EVENT_VBUS;
}else if (PLUGIN_AC_CHARGER == plugin_stat){
di->event = USB_EVENT_CHARGER;
}else{
di->event = USB_EVENT_NONE;
}
schedule_work(&di->usb_work);
return 0;
err_kfree:
kfree(di);
return ret;
}