DWR-512: adding wwan support for the dwr-512 3G modem

This PR allow the 3G modem embedded in the DWR-512 to be managed
by the wwan-ncm scripts. The modem will use the usb-option and
usb-cdc-ether drivers.
The DWR-512 DT is updated accordingly.

Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>

2 files changed, 36 insertions, 2 deletions

diff --git a/package/network/utils/comgt/files/ncm.json b/package/network/utils/comgt/files/ncm.json
index 8f74e173d1..bbdb30c5ee 100644
--- a/package/network/utils/comgt/files/ncm.json
+++ b/package/network/utils/comgt/files/ncm.json
@@ -63,5 +63,16 @@
 		},
 		"connect": "AT*ENAP=1,${profile}",
 		"disconnect": "AT*ENAP=0"
+	},
+	"mtk1": {
+		"initialize": [
+			"AT+CFUN=1"
+		],
+		"configure": [
+			"AT+CGDCONT=${profile},\\\"${pdptype}\\\",\\\"${apn}\\\",0,0"
+		],
+		"connect": "AT+CGACT=1,${profile}",
+		"finalize": "AT+CGDATA=\\\"M-MBIM\\\",${profile},1",
+		"disconnect": "AT+CGACT=0,${profile}"
 	}
 }
diff --git a/package/network/utils/comgt/files/ncm.sh b/package/network/utils/comgt/files/ncm.sh
index 73d1e05e3f..60b39655ec 100644
--- a/package/network/utils/comgt/files/ncm.sh
+++ b/package/network/utils/comgt/files/ncm.sh
@@ -25,7 +25,7 @@ proto_ncm_init_config() {
 proto_ncm_setup() {
 	local interface="$1"
 
-	local manufacturer initialize setmode connect ifname devname devpath
+	local manufacturer initialize setmode connect finalize ifname devname devpath
 
 	local device apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
 	json_get_vars device apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
@@ -105,9 +105,21 @@ proto_ncm_setup() {
 			return 1
 		}
 	}
+
+	json_get_values configure configure
+	echo "Configuring modem"
+	for i in $configure; do
+		eval COMMAND="$i" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
+			echo "Failed to configure modem"
+			proto_notify_error "$interface" CONFIGURE_FAILED
+			return 1
+		}
+	done
+
 	[ -n "$mode" ] && {
 		json_select modes
 		json_get_var setmode "$mode"
+		echo "Setting mode"
 		eval COMMAND="$setmode" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
 			echo "Failed to set operating mode"
 			proto_notify_error "$interface" SETMODE_FAILED
@@ -118,14 +130,16 @@ proto_ncm_setup() {
 
 	echo "Starting network $interface"
 	json_get_vars connect
+	echo "Connecting modem"
 	eval COMMAND="$connect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
 		echo "Failed to connect"
 		proto_notify_error "$interface" CONNECT_FAILED
 		return 1
 	}
 
+	json_get_vars finalize
+
 	echo "Setting up $ifname"
-	
 	proto_init_update "$ifname" 1
 	proto_add_data
 	json_add_string "manufacturer" "$manufacturer"
@@ -150,6 +164,15 @@ proto_ncm_setup() {
 		proto_add_dynamic_defaults
 		ubus call network add_dynamic "$(json_dump)"
 	}
+
+	[ -n "$finalize" ] && {
+		eval COMMAND="$finalize" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
+			echo "Failed to configure modem"
+			proto_notify_error "$interface" FINALIZE_FAILED
+			return 1
+		}
+	}
+
 }
 
 proto_ncm_teardown() {