fix: update from upstream

See https://github.com/nrfconnect/sdk-nrf/tree/7574b28961e5f8b485b63a14b926f38fda4292e8/applications/asset_tracker_v2

src/events/modem_module_event.c

@@ -44,6 +44,8 @@ static char *get_evt_type_str(enum modem_module_event_type type)
 		return "MODEM_EVT_CARRIER_EVENT_LTE_LINK_UP_REQUEST";
 	case MODEM_EVT_CARRIER_EVENT_LTE_LINK_DOWN_REQUEST:
 		return "MODEM_EVT_CARRIER_EVENT_LTE_LINK_DOWN_REQUEST";
+	case MODEM_EVT_CARRIER_EVENT_LTE_POWER_OFF_REQUEST:
+		return "MODEM_EVT_CARRIER_EVENT_LTE_POWER_OFF_REQUEST";
 	case MODEM_EVT_CARRIER_FOTA_PENDING:
 		return "MODEM_EVT_CARRIER_FOTA_PENDING";
 	case MODEM_EVT_CARRIER_FOTA_STOPPED:

src/events/modem_module_event.h

@@ -121,6 +121,7 @@ enum modem_module_event_type {
 	MODEM_EVT_CARRIER_REBOOT_REQUEST,
 	MODEM_EVT_CARRIER_EVENT_LTE_LINK_UP_REQUEST,
 	MODEM_EVT_CARRIER_EVENT_LTE_LINK_DOWN_REQUEST,
+	MODEM_EVT_CARRIER_EVENT_LTE_POWER_OFF_REQUEST
 };
 
 /** @brief LTE cell information. */

src/modules/modem_module.c

@@ -405,9 +405,11 @@ int lwm2m_carrier_event_handler(const lwm2m_carrier_event_t *evt)
 		SEND_EVENT(modem, MODEM_EVT_CARRIER_EVENT_LTE_LINK_DOWN_REQUEST);
 		break;
 	}
-	case LWM2M_CARRIER_EVENT_LTE_POWER_OFF:
+	case LWM2M_CARRIER_EVENT_LTE_POWER_OFF: {
 		LOG_INF("LWM2M_CARRIER_EVENT_LTE_POWER_OFF");
+		SEND_EVENT(modem, MODEM_EVT_CARRIER_EVENT_LTE_POWER_OFF_REQUEST);
 		break;
+	}
 	case LWM2M_CARRIER_EVENT_BOOTSTRAPPED:
 		LOG_INF("LWM2M_CARRIER_EVENT_BOOTSTRAPPED");
 		break;
@@ -773,6 +775,19 @@ static void on_state_connected(struct modem_msg_data *msg)
 
 		state_set(STATE_DISCONNECTED);
 	}
+
+	if (IS_EVENT(msg, modem, MODEM_EVT_CARRIER_EVENT_LTE_POWER_OFF_REQUEST)) {
+		int err;
+
+		err = lte_lc_power_off();
+		if (err) {
+			LOG_ERR("LTE power off failed, error: %d", err);
+			SEND_ERROR(modem, MODEM_EVT_ERROR, err);
+			return;
+		}
+
+		state_set(STATE_DISCONNECTED);
+	}
 }
 
 /* Message handler for all states. */