uqmi: add plmn set functionality for netifd proto handler

uqmi has the possibility to allow the modem to start a regsitration
process only to this specified plmn

Signed-off-by: Florian Eckert <Eckert.Florian@googlemail.com>

package/network/utils/uqmi/files/lib/netifd/proto/qmi.sh

@@ -21,16 +21,17 @@ proto_qmi_init_config() {
 	proto_config_add_int profile
 	proto_config_add_boolean dhcpv6
 	proto_config_add_boolean autoconnect
+	proto_config_add_int plmn
 	proto_config_add_defaults
 }
 
 proto_qmi_setup() {
 	local interface="$1"
 
-	local device apn auth username password pincode delay modes pdptype profile dhcpv6 autoconnect $PROTO_DEFAULT_OPTIONS
+	local device apn auth username password pincode delay modes pdptype profile dhcpv6 autoconnect plmn $PROTO_DEFAULT_OPTIONS
 	local cid_4 pdh_4 cid_6 pdh_6
 	local ip_6 ip_prefix_length gateway_6 dns1_6 dns2_6
-	json_get_vars device apn auth username password pincode delay modes pdptype profile dhcpv6 autoconnect $PROTO_DEFAULT_OPTIONS
+	json_get_vars device apn auth username password pincode delay modes pdptype profile dhcpv6 autoconnect plmn $PROTO_DEFAULT_OPTIONS
 
 	[ "$metric" = "" ] && metric="0"
 
@@ -76,6 +77,25 @@ proto_qmi_setup() {
 		}
 	}
 
+	[ -n "$plmn" ] && {
+		local mcc mnc
+		if [ "$plmn" = 0 ]; then
+			mcc=0
+			mnc=0
+			echo "Setting PLMN to auto"
+		else
+			mcc=${plmn:0:3}
+			mnc=${plmn:3}
+			echo "Setting PLMN to $plmn"
+		fi
+		uqmi -s -d "$device" --set-plmn --mcc "$mcc" --mnc "$mnc" || {
+			echo "Unable to set PLMN"
+			proto_notify_error "$interface" PLMN_FAILED
+			proto_block_restart "$interface"
+			return 1
+		}
+	}
+
 	uqmi -s -d "$device" --set-data-format 802.3
 	uqmi -s -d "$device" --wda-set-data-format 802.3
 	uqmi -s -d "$device" --sync