Power: DA9052 Battery driver v4

Driver for DA9052 battery charger. This driver depends on DA9052 MFD core dirver for definitions and methods.

Tested on Samsung SMDK6410 board with DA9052-BC and DA9053-BA evaluation boards.

Signed-off-by David Dajun Chen <[email protected]>

Signed-off-by Ashish Jangam <[email protected]>

---

drivers/power/da9052-battery.c new file +5 -0

+
+	ret = da9052_group_read(battery->da9052, DA9052_STATUS_A_REG, 2, v);
+	if (ret < 0)
+		return ret;
+

drivers/power/da9052-battery.c new file +37 -0

+		battery->charger_type = DA9052_CHARGER;
+
+		/* If charging end flag is set and Charging current is greater
+		 * than charging end limit then battery is charging
+		*/
+		if ((chg_end & DA9052_STATUSB_CHGEND) != 0) {
+			ret = da9052_battery_read_current(battery,
+							  &chg_current);
+			if (ret < 0)
+				return ret;
+			ret = da9052_battery_read_end_current(battery,
+							      &chg_end_current);
+			if (ret < 0)
+				return ret;
+
+			if (chg_current >= chg_end_current)
+				battery->status = POWER_SUPPLY_STATUS_CHARGING;
+			else
+				battery->status =
+					POWER_SUPPLY_STATUS_NOT_CHARGING;
+		}
+		/* If Charging end flag is cleared then battery is charging */
+		else
+			battery->status = POWER_SUPPLY_STATUS_CHARGING;
+	} else if (bat_status & DA9052_STATUSA_DCINDET ||
+		  bat_status & DA9052_STATUSA_VBUSDET) {
+			battery->charger_type = DA9052_CHARGER;
+			battery->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+	} else {
+		battery->charger_type = DA9052_NOCHARGER;
+		battery->status = POWER_SUPPLY_STATUS_DISCHARGING;
+	}
+
+	if (status != NULL)
+		*status = battery->status;
+	return 0;
+}

drivers/power/da9052-battery.c new file +19 -0

+		return temp_index;
+}
+
+static int da9052_battery_read_capacity(struct da9052_battery *battery,
+					 int *capacity)
+{
+	int bat_temperature, bat_voltage;
+	int vbat_lower, vbat_upper, level_upper, level_lower;
+	int ret, flag, index, access_index = 0;
+
+	ret = da9052_battery_read_volt(battery, &bat_voltage);
+	if (ret < 0)
+		return ret;
+
+	bat_temperature = da9052_adc_temperature_read(battery->da9052);
+	if (bat_temperature < 0)
+		return bat_temperature;
+
+	for (index = 0; index < (DA9052_NO_OF_LOOKUP_TABLE - 1); index++) {

drivers/power/da9052-battery.c new file +21 -0

+				access_index = select_temperature(index,
+					       bat_temperature);
+			break;
+		}
+	}
+	if (bat_voltage >= vbat_vs_capacity_look_up[access_index][0][0]) {
+		*capacity = 100;
+		return 0;
+	}
+	if (bat_voltage <= vbat_vs_capacity_look_up[access_index]
+		[DA9052_LOOK_UP_TABLE_SIZE - 1][0]) {
+			*capacity = 0;
+			return 0;
+	}
+	flag = 0;
+
+	for (index = 0; index < (DA9052_LOOK_UP_TABLE_SIZE-1); index++) {
+		if ((bat_voltage <=
+		     vbat_vs_capacity_look_up[access_index][index][0]) &&
+		    (bat_voltage >=
+		     vbat_vs_capacity_look_up[access_index][index + 1][0])) {