Android 开机充电图标和充电动画效果

首先驱动需要先获取到2个power supply

kernelmsm-3.18driversusbphyphy-msm-usb.c

代码语言：javascript复制

motg- usb_psy.name = "usb";
motg- usb_psy.type = POWER_SUPPLY_TYPE_USB;
motg- usb_psy.supplied_to = otg_pm_power_supplied_to;
motg- usb_psy.num_supplicants = ARRAY_SIZE(otg_pm_power_supplied_to);
motg- usb_psy.properties = otg_pm_power_props_usb;
motg- usb_psy.num_properties = ARRAY_SIZE(otg_pm_power_props_usb);
motg- usb_psy.get_property = otg_power_get_property_usb;
motg- usb_psy.set_property = otg_power_set_property_usb;
motg- usb_psy.property_is_writeable
  = otg_power_property_is_writeable_usb;

if (!msm_otg_register_power_supply(pdev, motg))
  psy = &motg- usb_psy;

kernelmsm-3.18driverspowerbq2570xbq2570x_charger.c

代码语言：javascript复制

 usb_psy = power_supply_get_by_name("usb");

static int bq2570x_psy_register(struct bq2570x *bq)
{
  int ret;

  bq- batt_psy.name = "dc_o2";
  bq- batt_psy.type = POWER_SUPPLY_TYPE_BATTERY;
  bq- batt_psy.properties = bq2570x_charger_props;
  bq- batt_psy.num_properties = ARRAY_SIZE(bq2570x_charger_props);
  bq- batt_psy.get_property = bq2570x_charger_get_property;
  bq- batt_psy.set_property = bq2570x_charger_set_property;
  bq- batt_psy.external_power_changed = bq2570x_external_power_changed;
  bq- batt_psy.property_is_writeable = bq2570x_charger_is_writeable;

  ret = power_supply_register(bq- dev, &bq- batt_psy);
  if (ret < 0) {
    pr_err("failed to register batt_psy:%dn", ret);
    return ret;
  }

  return 0;
}

充电的闪电图标和充电动画启动逻辑

闪电图标启动逻辑：POWER_SUPPLY_TYPE_USB的power supply上报USB类型(CDP,DCP,USB)

代码语言：javascript复制

power_supply_set_supply_type(bq- usb_psy, POWER_SUPPLY_TYPE_USB);
ret = power_supply_set_online(bq- usb_psy, true);
power_supply_changed(bq- usb_psy);

充电动画的启动逻辑：POWER_SUPPLY_TYPE_BATTERY的power supply上报充电状态

代码语言：javascript复制

(CHARGE_STATE_NOT_CHARGING，CHARGE_STATE_FASTCHARGE)
bq- charge_state = CHARGE_STATE_FASTCHARGE;
power_supply_changed(&bq- batt_psy);

利用dumpsys分析当前battery 状态

代码语言：javascript复制

V2_PRO:/ # dumpsys battery
Current Battery Service state:
 AC powered: false
 USB powered: true
 Wireless powered: false
 Max charging current: 0
 Max charging voltage: 0
 Charge counter: 0
 status: 2
 health: 2
 present: true
 level: 46
 scale: 100
 voltage: 7
 temperature: 270
 technology: Li-ion

如上主要关注2个字段：

USB powered : true

那么闪电图标应该会出现

status: 2

那么充电动画应该启动了

同时我们还可以通过shell指令的方式启动充电图标和充电动画

dumpsys battery set usb 1

闪电图标应该会出现

dumpsys battery set status 2

充电动画应该启动了

dumpsys battery set usb 0

闪电图标消失