static int ab8500_fg_get_ext_psy_data()

in supply/ab8500_fg.c [2137:2254]

• 101 lines of code
• 26 McCabe index (conditional complexity)

static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
{
	struct power_supply *psy;
	struct power_supply *ext = dev_get_drvdata(dev);
	const char **supplicants = (const char **)ext->supplied_to;
	struct ab8500_fg *di;
	struct power_supply_battery_info *bi;
	union power_supply_propval ret;
	int j;

	psy = (struct power_supply *)data;
	di = power_supply_get_drvdata(psy);
	bi = di->bm->bi;

	/*
	 * For all psy where the name of your driver
	 * appears in any supplied_to
	 */
	j = match_string(supplicants, ext->num_supplicants, psy->desc->name);
	if (j < 0)
		return 0;

	/* Go through all properties for the psy */
	for (j = 0; j < ext->desc->num_properties; j++) {
		enum power_supply_property prop;
		prop = ext->desc->properties[j];

		if (power_supply_get_property(ext, prop, &ret))
			continue;

		switch (prop) {
		case POWER_SUPPLY_PROP_STATUS:
			switch (ext->desc->type) {
			case POWER_SUPPLY_TYPE_BATTERY:
				switch (ret.intval) {
				case POWER_SUPPLY_STATUS_UNKNOWN:
				case POWER_SUPPLY_STATUS_DISCHARGING:
				case POWER_SUPPLY_STATUS_NOT_CHARGING:
					if (!di->flags.charging)
						break;
					di->flags.charging = false;
					di->flags.fully_charged = false;
					if (di->bm->capacity_scaling)
						ab8500_fg_update_cap_scalers(di);
					queue_work(di->fg_wq, &di->fg_work);
					break;
				case POWER_SUPPLY_STATUS_FULL:
					if (di->flags.fully_charged)
						break;
					di->flags.fully_charged = true;
					di->flags.force_full = true;
					/* Save current capacity as maximum */
					di->bat_cap.max_mah = di->bat_cap.mah;
					queue_work(di->fg_wq, &di->fg_work);
					break;
				case POWER_SUPPLY_STATUS_CHARGING:
					if (di->flags.charging &&
						!di->flags.fully_charged)
						break;
					di->flags.charging = true;
					di->flags.fully_charged = false;
					if (di->bm->capacity_scaling)
						ab8500_fg_update_cap_scalers(di);
					queue_work(di->fg_wq, &di->fg_work);
					break;
				}
				break;
			default:
				break;
			}
			break;
		case POWER_SUPPLY_PROP_TECHNOLOGY:
			switch (ext->desc->type) {
			case POWER_SUPPLY_TYPE_BATTERY:
				if (!di->flags.batt_id_received &&
				    (bi && (bi->technology !=
					    POWER_SUPPLY_TECHNOLOGY_UNKNOWN))) {
					const struct ab8500_battery_type *b;

					b = di->bm->bat_type;

					di->flags.batt_id_received = true;

					di->bat_cap.max_mah_design =
						di->bm->bi->charge_full_design_uah;

					di->bat_cap.max_mah =
						di->bat_cap.max_mah_design;

					di->vbat_nom_uv =
						di->bm->bi->voltage_max_design_uv;
				}

				if (ret.intval)
					di->flags.batt_unknown = false;
				else
					di->flags.batt_unknown = true;
				break;
			default:
				break;
			}
			break;
		case POWER_SUPPLY_PROP_TEMP:
			switch (ext->desc->type) {
			case POWER_SUPPLY_TYPE_BATTERY:
				if (di->flags.batt_id_received)
					di->bat_temp = ret.intval;
				break;
			default:
				break;
			}
			break;
		default:
			break;
		}
	}
	return 0;
}