v2x/gnss-init/usb-hub-reset: extracted the usb hub reset part from v2x

The v2x firmware load script contained also the usb hub reset which
affects the GNSS modem. This means that the GNSS modem worked only
when the v2x recipe was enabled. But without firmware the v2x-service
fails at start-up which affects all other images except vcu.

Therefore the usb-hub reset part was extracted from the v2x firmware
load script so that we decouple those two functions. ZF/OM need a
failing v2x service when no firmware is loaded, thus the v2x service
was moved back to the vcu image (see meta-netmodule-om).

The systemd services v2x and gnss-init depend now on usb-hub-reset
whereas gnss-init additionally depends on v2x (if available).

BugzID: 72787

Signed-off-by: Marc Mattmueller <marc.mattmueller@netmodule.com>

conf/machine/imx8-nmhw23.conf

@@ -46,6 +46,7 @@ MACHINE_FEATURES += " \
 	wwan \
 	bluetooth \
 	neo-m8l \
+	usb-hub-reset \
 	v2x \
 	imx-boot \
 "

recipes-bsp/usb-hub-reset/files/usb-hub-reset

@@ -0,0 +1,86 @@
+#!/bin/sh
+
+# ************************************************************
+#  USB Hub Reset Script
+#  -----------------------
+#
+#  The USB hub in the HW23 connects the GNSS modem, the v2x-
+#  module, the user interface and the user module.
+#
+#  During the configuration/start-up the v2x module and the
+#  GNSS modem are interfering. Thus a sequentialized startup
+#  is needed.
+#  This service just powers the USB hub and is the first
+#  service needed if GNSS or in case of HW23 v2x shall work.
+# ************************************************************
+
+SCRIPT_NAME=$(basename "${0}")
+SCRIPT_DIR=$(dirname "${0}")
+SCRIPT_PATH=$(realpath "${SCRIPT_DIR}")
+MYDIR=$(pwd)
+
+HUB_RST=/sys/class/leds/hub_rst/brightness
+ON_VALUE=0
+OFF_VALUE=255
+
+export HUB_RST_STATE="off"
+
+
+#**********************************************************************************************
+# local helper functions
+#**********************************************************************************************
+function printUsage()
+{
+    echo -e "\\nUsage: ${SCRIPT_NAME} [OPTIONS] HUB_STATE\\n\\n"
+    echo -e "   HUB_STATE                    The reqeusted state of the ubs hub:"
+    echo -e "                                 * on = switch hub ON"
+    echo -e "                                 * off = switch hub OFF (default)"
+    echo -e "   OPTIONS:"
+    echo -e "     -h|--help                  Show this help"
+    echo -e ""
+}
+
+#**********************************************************************************************
+# main
+#**********************************************************************************************
+
+O=$(getopt -o h --long help -- "$@") || exit 1
+if [ $? != 0 ]; then
+    echo "ERROR: Could not parse command line options"
+    exit 1
+fi
+
+eval set -- "$O"
+while true; do
+    case "${1}" in
+        -h|--help)
+            printUsage
+            exit 0
+            ;;
+        --)
+            export HUB_RST_STATE="${2}"
+            shift 2
+            break
+            ;;
+        *)
+            printUsage; exit 0 ;;
+    esac
+done
+
+
+if [ ! -f $HUB_RST ]; then
+    echo "ERROR: USB hub reset lines not available"
+    return 1
+fi
+
+HUB_RST_VALUE=$OFF_VALUE
+[[ "${HUB_RST_STATE}" != "off" ]] && HUB_RST_VALUE=$ON_VALUE || true
+
+
+echo $HUB_RST_VALUE > $HUB_RST
+if [[ "$?" != "0" ]]; then
+    echo "ERROR: Could not set usb hub to ${HUB_RST_STATE}"
+    exit 1
+fi
+
+exit 0

recipes-bsp/usb-hub-reset/files/usb-hub-reset.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=USB Hub Reset Service
+Before=gpsd.service
+
+[Service]
+Type=oneshot
+
+ExecStartPre=/usr/bin/usb-hub-reset on
+ExecStart=/usr/bin/echo releasing usb hub from reset
+ExecStop=/usr/bin/echo set usb hub into reset state
+ExecStopPost=/bin/bin/usb-hub-reset off
+
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target
+RequiredBy=multi-user.target

recipes-bsp/usb-hub-reset/usb-hub-reset.bb

@@ -0,0 +1,29 @@
+DESCRIPTION = "USB-Hub Reset on HW23"
+HOMEPAGE = "www.netmodule.com"
+LICENSE = "MIT"
+SECTION = "bsp"
+RDEPENDS_${PN} = "usbutils coreutils"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+inherit systemd
+
+SRC_URI = " \
+           file://usb-hub-reset.service \
+           file://usb-hub-reset\
+          "
+
+S = "${WORKDIR}"
+
+SYSTEMD_SERVICE_${PN} = " \
+                          usb-hub-reset.service \
+                        "
+
+FILES_${PN} = "${systemd_unitdir}/system ${bindir}"
+
+do_install() {
+    install -d ${D}${systemd_unitdir}/system
+    install -m 644 ${WORKDIR}/usb-hub-reset.service ${D}${systemd_unitdir}/system/
+
+    install -d ${D}${bindir}
+    install -m 744 ${WORKDIR}/usb-hub-reset ${D}${bindir}
+}

recipes-bsp/v2x-ieee802.11p/files/v2x-fw-load

@@ -1,21 +1,12 @@
 #!/bin/sh
-HUB_RST=/sys/class/leds/hub_rst/brightness
 V2X_RST=/sys/class/leds/v2x_rst/brightness
 
-
-if [ ! -f $HUB_RST ]; then
-    echo Reset lines not available
-    return 1
-fi
-
-
-echo 0 > $HUB_RST
 echo 0 > $V2X_RST
 
 timeout 30 bash -c -- 'while true; do lsusb | grep "0483:df11"; if [ $? == 0  ]; then break; fi; done'
 if [ $? == 124 ]; then
     echo "v2x module is not available on usb bus"
-    exit 0
+    exit 1
 fi
 
 output=$(dfu-util -d 0483:df11 -s 0x10000000 -D /lib/firmware/v2x/SECTON.packed_bin.rom 2>&1)

recipes-bsp/v2x-ieee802.11p/files/v2x-ieee802.11p.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=V2X Firmware loader
-Before=gpsd.service
+After=usb-hub-reset.service
 
 [Service]
 Type=oneshot

recipes-connectivity/gnss-init/files/gnss-init.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=GNSS init service
-After=v2x-ieee802.11p.service
+After=usb-hub-reset v2x-ieee802.11p.service
 
 [Service]
 Type=oneshot