void twl6030_init_battery_charging(void)
{
u8 stat1 = 0;
int battery_volt = 0;
int ret = 0;
/* Enable VBAT measurement */
twl6030_i2c_write_u8(TWL6030_CHIP_PM, VBAT_MEAS, MISC1);
/* Enable GPADC module */
ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, FGS | GPADCS, TOGGLE1);
if (ret) {
printf("Failed to enable GPADC\n");
return;
}
battery_volt = twl6030_get_battery_voltage();
if (battery_volt < 0)
return;
if (battery_volt < 3000)
printf("Main battery voltage too low!\n");
/* Check for the presence of USB charger */
twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, &stat1, CONTROLLER_STAT1);
/* check for battery presence indirectly via Fuel gauge */
if ((stat1 & VBUS_DET) && (battery_volt < 3300))
twl6030_start_usb_charging();
return;
}
static int twl6030_bci_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct twl6030_bci_device_info *di;
di = to_twl6030_bci_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
switch (di->state) {
case STATE_USB:
case STATE_AC:
case STATE_FULL: /* TODO ?? */
val->intval = POWER_SUPPLY_STATUS_CHARGING;
break;
default:
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
}
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = twl6030_get_battery_voltage(di) * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
twl6030battery_current(di);
val->intval = di->current_uA;
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
val->intval = di->capacity_uAh;
break;
case POWER_SUPPLY_PROP_TEMP:
val->intval = 275; // simulate a healthy battery temp
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = 1;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
val->intval = di->current_avg_uA;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = di->bat_health;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = di->capacity;
break;
default:
return -EINVAL;
}
return 0;
}
int do_vbat(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if (argc == 2) {
if (strncmp(argv[1], "startcharge", 12) == 0)
twl6030_start_usb_charging();
else if (strncmp(argv[1], "stopcharge", 11) == 0)
twl6030_stop_usb_charging();
else if (strncmp(argv[1], "status", 7) == 0) {
twl6030_get_battery_voltage();
twl6030_get_battery_current();
} else {
goto bat_cmd_usage;
}
} else {
goto bat_cmd_usage;
}
return 0;
bat_cmd_usage:
return cmd_usage(cmdtp);
}
