void battery_callback()
{
if (!charging_allowed)
return;
adc_configure(&batt_adc_config);
BATTERY_VOLTAGE_TRIS = 1;
BATTERY_VOLTAGE_DIGITAL = 0;
adc_set_channel(1);
last_battery_voltage = adc_convert_one();
//Disable charging if battery voltage is greater than max charge level
if (last_battery_voltage >= kBatteryChargedLevel)
disable_charging();
else if (last_battery_voltage < kBatteryHysteresisLevel) //Reenable charging once battery level falls below hysteresis
enable_charging();
}
static void change_charge_status(int status)
{
switch (status) {
case POWER_SUPPLY_STATUS_UNKNOWN:
case POWER_SUPPLY_STATUS_NOT_CHARGING:
case POWER_SUPPLY_STATUS_DISCHARGING:
if (sec_bci->battery.battery_health != POWER_SUPPLY_HEALTH_DEAD)
disable_charging();
#ifdef HIGH_TEMP_GAURD_FOR_CAMCORDER
sec_bci->charger.camera_recording_inout = 0;
#endif
break;
case POWER_SUPPLY_STATUS_FULL:
break;
case POWER_SUPPLY_STATUS_FULL_END:
sec_bci->charger.rechg_count = 4;
/*Cancel timer */
clear_charge_start_time();
disable_charging();
break;
case POWER_SUPPLY_STATUS_CHARGING:
if (sec_bci->battery.battery_vf_ok) {
sec_bci->battery.battery_health = POWER_SUPPLY_HEALTH_GOOD;
/*Start monitoring charging time */
set_charge_start_time();
enable_charging();
break;
} else {
sec_bci->battery.battery_health = POWER_SUPPLY_HEALTH_DEAD;
status = POWER_SUPPLY_STATUS_DISCHARGING;
printk( KERN_INFO "[TA] INVALID BATTERY, %d !! \n", status);
disable_charging();
break;
}
case POWER_SUPPLY_STATUS_RECHARGING_FOR_FULL:
/*Start monitoring charging time */
sec_bci->charger.charging_timeout = DEFAULT_RECHARGING_TIMEOUT;
set_charge_start_time();
enable_charging();
break;
case POWER_SUPPLY_STATUS_RECHARGING_FOR_TEMP:
enable_charging();
break;
default:
;
}
sec_bci->charger.prev_charge_status = sec_bci->charger.charge_status;
sec_bci->charger.charge_status = status;
_charger_state_change_(STATUS_CATEGORY_CHARGING, status);
}
int _battery_state_change_(int category, int value)
{
struct charger_device_info *di;
struct platform_device *pdev;
int state;
pdev = to_platform_device(this_dev);
di = platform_get_drvdata(pdev);
printk( KERN_INFO "[TA] cate: %d, value: %d, %s\n", category, value, di->dev->kobj.name );
switch (category) {
case STATUS_CATEGORY_TEMP:
switch (value) {
case BATTERY_TEMPERATURE_NORMAL:
printk( KERN_INFO "[TA] Charging re start normal TEMP!!\n");
change_charge_status(POWER_SUPPLY_STATUS_RECHARGING_FOR_TEMP);
break;
case BATTERY_TEMPERATURE_LOW:
printk( KERN_INFO "[TA] Charging stop LOW TEMP!!\n");
change_charge_status(POWER_SUPPLY_STATUS_NOT_CHARGING);
break;
case BATTERY_TEMPERATURE_HIGH:
printk( KERN_INFO "[TA] Charging stop HI TEMP!!\n");
change_charge_status(POWER_SUPPLY_STATUS_NOT_CHARGING);
break;
#ifdef HIGH_TEMP_GAURD_FOR_CAMCORDER
case BATTERY_TEMPERATURE_ETC:
if(sec_bci->charger.camera_recording
&& sec_bci->charger.camera_recording_inout){
printk( KERN_INFO "[TA] Charger is set to the USB mode\n");
state = sec_bci->charger.cable_status;
sec_bci->charger.cable_status = POWER_SUPPLY_TYPE_USB;
enable_charging();
sec_bci->charger.cable_status = state;
break;
} else {
printk( KERN_INFO "[TA] Charger is set to the original mode\n");
enable_charging();
break;
}
#endif
default:
break;
}
break;
case STATUS_CATEGORY_CHARGING:
switch (value) {
case POWER_SUPPLY_STATUS_FULL:
printk( KERN_INFO "[TA] Charge FULL(#1)! (monitoring charge current)\n");
change_charge_status(POWER_SUPPLY_STATUS_FULL);
break;
case POWER_SUPPLY_STATUS_FULL_END:
printk( KERN_INFO "[TA] Charge FULL(#2)! (monitoring charge current)\n");
change_charge_status(POWER_SUPPLY_STATUS_FULL_END);
break;
case POWER_SUPPLY_STATUS_CHARGING_OVERTIME:
printk( KERN_INFO "[TA] CHARGING TAKE OVER 6 hours !!\n");
change_charge_status(POWER_SUPPLY_STATUS_FULL_END);
break;
case POWER_SUPPLY_STATUS_FULL_DUR_SLEEP:
printk( KERN_INFO "[TA] Charge FULL!\n");
change_charge_status(POWER_SUPPLY_STATUS_FULL);
break;
case POWER_SUPPLY_STATUS_RECHARGING_FOR_FULL:
printk( KERN_INFO "[TA] Re-Charging Start!!\n");
change_charge_status(POWER_SUPPLY_STATUS_RECHARGING_FOR_FULL);
break;
default:
break;
}
break;
case STATUS_CATEGORY_ETC:
switch (value) {
case ETC_CABLE_IS_DISCONNECTED:
printk( KERN_INFO "[TA] CABLE IS NOT CONNECTED.... Charge Stop!!\n");
change_cable_status(POWER_SUPPLY_TYPE_BATTERY, di);
break;
default:
break;
}
break;
default:
printk( KERN_INFO "[TA] Invalid category!!!!!\n");
break;
}
return 0;
}
void charger_task(void)
{
int next_state;
int wait_time = T1_USEC;
timestamp_t pre_chg_start = get_time();
pmu_init();
/* Enable low current charging */
pmu_low_current_charging(1);
/* Enable charger interrupt */
gpio_enable_interrupt(GPIO_CHARGER_INT_L);
/*
* EC STOP mode support
* The charging loop can be stopped in idle state with AC unplugged.
* Charging loop will be resumed by TPSCHROME interrupt.
*/
enable_charging(0);
disable_sleep(SLEEP_MASK_CHARGING);
while (1) {
last_waken = get_time();
pmu_clear_irq();
#ifdef CONFIG_PMU_TPS65090_CHARGING_LED
update_battery_led();
#endif
/*
* When battery is extremely low, the internal voltage can not
* power on its gas guage IC. Charging loop will enable the
* charger and turn on trickle charging. For safty reason,
* charger should be disabled if the communication to battery
* failed.
*/
if (current_state == ST_PRE_CHARGING &&
get_time().val - pre_chg_start.val >= PRE_CHARGING_TIMEOUT)
next_state = ST_CHARGING_ERROR;
else
next_state = calc_next_state(current_state);
if (next_state != current_state) {
/* Reset state of charge moving average window */
rsoc_moving_average(-1);
CPRINTS("batt state %s -> %s",
state_list[current_state],
state_list[next_state]);
current_state = next_state;
switch (current_state) {
case ST_PRE_CHARGING:
pre_chg_start = get_time();
/* Fall through */
case ST_CHARGING:
if (pmu_blink_led(0))
next_state = ST_CHARGING_ERROR;
else
enable_charging(1);
break;
case ST_CHARGING_ERROR:
/*
* Enable hardware charging circuit after set
* PMU to hardware error state.
*/
if (pmu_blink_led(1))
enable_charging(0);
else
enable_charging(1);
break;
case ST_IDLE:
case ST_IDLE0:
case ST_BAD_COND:
case ST_DISCHARGING:
enable_charging(0);
/* Ignore charger error when discharging */
pmu_blink_led(0);
break;
}
}
switch (current_state) {
case ST_CHARGING:
case ST_CHARGING_ERROR:
wait_time = T2_USEC;
break;
case ST_DISCHARGING:
wait_time = T3_USEC;
break;
case ST_PRE_CHARGING:
wait_time = T1_USEC;
if (get_time().val - pre_chg_start.val >=
PRE_CHARGING_TIMEOUT)
enable_charging(0);
break;
default:
if (extpower_is_present()) {
wait_time = T1_USEC;
break;
} else if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) {
wait_time = T1_OFF_USEC;
enable_sleep(SLEEP_MASK_CHARGING);
} else if (chipset_in_state(CHIPSET_STATE_SUSPEND)) {
wait_time = T1_SUSPEND_USEC;
} else {
wait_time = T1_USEC;
}
}
if (!has_pending_event) {
task_wait_event(wait_time);
disable_sleep(SLEEP_MASK_CHARGING);
} else {
has_pending_event = 0;
}
}
}
static bool check_battery_vf( void )
{
int count = 0;
int val;
bool ret = false;
#if 0
count = 0;
disable_charging( CHARGE_DUR_ACTIVE );
msleep( 100 );
enable_charging( CHARGE_DUR_ACTIVE );
val = gpio_get_value( KCHG_ING_GPIO );
if ( !val )
return true;
while ( count < 10 )
{
if ( !gpio_get_value( KCHG_ING_GPIO ) )
return true;
count++;
msleep( 1 );
}
if ( !ret && device_config->VF_CHECK_USING_ADC )
{
#if 0
int i;
int val[5];
for ( i = 0; i < 5 ; i++ )
{
val[i] = _get_t2adc_data_( device_config->VF_ADC_PORT );
}
count = _get_average_value_( val, 5 );
#else
count = _get_t2adc_data_( device_config->VF_ADC_PORT );
#endif
printk("vf: %d\n", count);
if ( count < 100 )
return true;
}
disable_charging( CHARGE_DUR_ACTIVE );
#elif 0
if ( device_config->VF_CHECK_USING_ADC )
{
int i;
int val[5];
for ( i = 0; i < 5 ; i++ )
{
val[i] = _get_t2adc_data_( device_config->VF_ADC_PORT );
if ( val[i] >= 100 )
{
printk( "vf: %d\n", val[i] );
return false;
}
msleep( 100 );
}
count = _get_average_value_( val, 5 );
printk("vf: %d\n", count);
if ( count < 100 )
return true;
/* count = _get_t2adc_data_( device_config->VF_ADC_PORT );
printk("vf: %d\n", count);
if ( count < 100 )
return true;*/
}
else
{
count = 0;
disable_charging( CHARGE_DUR_ACTIVE );
msleep( 100 );
enable_charging( CHARGE_DUR_ACTIVE );
val = gpio_get_value( KCHG_ING_GPIO );
if ( !val )
return true;
while ( count < 10 )
{
if ( !gpio_get_value( KCHG_ING_GPIO ) )
return true;
count++;
msleep( 1 );
}
disable_charging( CHARGE_DUR_ACTIVE );
}
#else
count = 0;
disable_charging( CHARGE_DUR_ACTIVE );
msleep( 100 );
enable_charging( CHARGE_DUR_ACTIVE );
val = gpio_get_value( KCHG_ING_GPIO );
if ( !val )
{
ret = true;
}
while ( count < 10 )
{
if ( !gpio_get_value( KCHG_ING_GPIO ) )
{
ret = true;
break;
}
count++;
msleep( 1 );
}
disable_charging( CHARGE_DUR_ACTIVE );
if ( !ret && device_config->VF_CHECK_USING_ADC )
{
int i;
int val[5];
for ( i = 0; i < 5 ; i++ )
{
val[i] = _get_t2adc_data_( device_config->VF_ADC_PORT );
msleep( 100 );
}
count = _get_average_value_( val, 5 );
printk("vf: %d\n", count);
if ( count < 200)
return true;
}
#endif
return ret;
}
static void change_charge_status( int status, bool is_sleep )
// ----------------------------------------------------------------------------
// Description :
// Input Argument :
// Return Value :
{
switch ( status )
{
case POWER_SUPPLY_STATUS_UNKNOWN :
case POWER_SUPPLY_STATUS_DISCHARGING :
case POWER_SUPPLY_STATUS_NOT_CHARGING :
disable_charging( is_sleep );
break;
case POWER_SUPPLY_STATUS_FULL :
disable_charging( is_sleep );
/*Cancel timer*/
clear_charge_start_time();
break;
case POWER_SUPPLY_STATUS_CHARGING :
if ( sec_bci->battery.battery_vf_ok )
{
sec_bci->battery.battery_health = POWER_SUPPLY_HEALTH_GOOD;
/*Start monitoring charging time*/
set_charge_start_time();
enable_charging( is_sleep );
}
else
{
sec_bci->battery.battery_health = POWER_SUPPLY_HEALTH_DEAD;
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
disable_charging( is_sleep );
printk( "[TA] INVALID BATTERY, %d !! \n", status );
}
break;
case POWER_SUPPLY_STATUS_RECHARGING_FOR_FULL :
/*Start monitoring charging time*/
sec_bci->charger.charging_timeout = DEFAULT_RECHARGING_TIMEOUT;
set_charge_start_time();
enable_charging( is_sleep );
break;
case POWER_SUPPLY_STATUS_RECHARGING_FOR_TEMP :
enable_charging( is_sleep );
break;
default :
;
}
sec_bci->charger.prev_charge_status = sec_bci->charger.charge_status;
sec_bci->charger.charge_status = status;
_charger_state_change_( STATUS_CATEGORY_CHARGING, status, is_sleep );
}