From 1b319a008acb13649c826ede759d260c4aa38a25 Mon Sep 17 00:00:00 2001
From: vanhofen <vanhofen@gmx.de>
Date: Tue, 29 Aug 2017 14:41:14 +0200
Subject: [PATCH] - skel-root/hd1: align mdev-handling to hd2

---
 skel-root/coolstream/hd1/etc/mdev.conf        |  57 ++++++---
 skel-root/coolstream/hd1/etc/mdev/usbdev.sh   |  82 ------------
 skel-root/coolstream/hd1/etc/mdev/wlan.sh     |  18 ---
 skel-root/coolstream/hd1/lib/mdev/common/log  |  33 +++++
 .../coolstream/hd1/lib/mdev/common/mdevlog    |   7 ++
 .../coolstream/hd1/lib/mdev/common/mdevmodule |   5 +
 .../coolstream/hd1/lib/mdev/common/mdevprobe  |   9 ++
 .../mdev/mdev-mount.sh => lib/mdev/fs/mount}  |  35 ++++--
 skel-root/coolstream/hd1/lib/mdev/net/wlan    |  19 +++
 .../coolstream/hd1/lib/mdev/usb/eventvars     |  32 +++++
 .../coolstream/hd1/lib/mdev/usb/usbcontrol    | 119 ++++++++++++++++++
 11 files changed, 283 insertions(+), 133 deletions(-)
 delete mode 100755 skel-root/coolstream/hd1/etc/mdev/usbdev.sh
 delete mode 100755 skel-root/coolstream/hd1/etc/mdev/wlan.sh
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/common/log
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/common/mdevlog
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/common/mdevmodule
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/common/mdevprobe
 rename skel-root/coolstream/hd1/{etc/mdev/mdev-mount.sh => lib/mdev/fs/mount} (72%)
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/net/wlan
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/usb/eventvars
 create mode 100755 skel-root/coolstream/hd1/lib/mdev/usb/usbcontrol

diff --git a/skel-root/coolstream/hd1/etc/mdev.conf b/skel-root/coolstream/hd1/etc/mdev.conf
index 5ff0ab77..7465ae1c 100644
--- a/skel-root/coolstream/hd1/etc/mdev.conf
+++ b/skel-root/coolstream/hd1/etc/mdev.conf
@@ -8,31 +8,48 @@
 # =: move, >: move and create a symlink
 # @|$|*: run $cmd on delete, @cmd on create, *cmd on both
 
-null				0:0	0666
-zero				0:0	0666
-full				0:0	0666
-random				0:0	0666
-urandom				0:0	0444
+#$MODALIAS=.*		root:root	0660	@/bin/busybox modprobe "$MODALIAS"
 
-dvb([0-9]).([a-z]*)([0-9])	0:0	0644	=dvb/adapter%1/%2%3
-fb([0-2])			0:0	0660	>fb/%1
-ram1				0:0	0660	>ram
+null			root:root	0666
+zero			root:root	0666
+full			root:root	0666
+random			root:root	0666
+urandom			root:root	0444
 
-# HDD/BD-Player
-sd[a-z][0-9]			0:0	0664	*/etc/mdev/mdev-mount.sh
-sr[0-9]				0:0	0664	*/etc/mdev/mdev-mount.sh
+# Console device
+console			root:tty	0600
 
-# WLAN devices
-wlan[0-9]*			0:0	0660	*/etc/mdev/wlan.sh
-rausb[0-9]*			0:0	0660	*/etc/mdev/wlan.sh
-ra[0-9]*			0:0	0660	*/etc/mdev/wlan.sh
+# TTY devices
+ttyS[0-9]*		root:root	0660
+ttyUSB[0-9]*		root:root	0660
+
+# DVB devices
+dvb([0-9])\.(.*)([0-9])	root:root	0660	=dvb/adapter%1/%2%3
+
+# Input layer
+event[0-9]+		root:root	0640	=input/
+mice			root:root	0640	=input/
+mouse[0-9]+		root:root	0640	=input/
 
 # USB devices
-usbdev.*			0:0	0660	*/etc/mdev/usbdev.sh
+[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/usbcontrol
 
-# block devices
-mtdblock[0-6]			0:0	0660
+# HDDs / SD-cards
+sd[a-z][0-9]		root:root	0664	*/lib/mdev/fs/mount
+mmcblk[0-9]p[0-9]	root:root	0664	*/lib/mdev/fs/mount
+sr[0-9]			root:root	0664	*/lib/mdev/fs/mount
+
+# WLAN devices
+ra[0-9]*		root:root	0644	*/lib/mdev/net/wlan
+rausb[0-9]*		root:root	0644	*/lib/mdev/net/wlan
+wlan[0-9]*		root:root	0644	*/lib/mdev/net/wlan
+
+# block devices: group -> disk
+mtdblock[0-9]		root:root	0600
 
 # double up flash characters devices
-mtd[0-6]+			0:0	0660
-mtd[0-6]+ro			0:0	0660
+mtd[0-9]+		root:root	0600
+mtd[0-9]+ro		root:root	0600
+
+# everything else
+.*			root:root	0600	*/lib/mdev/common/mdevlog
diff --git a/skel-root/coolstream/hd1/etc/mdev/usbdev.sh b/skel-root/coolstream/hd1/etc/mdev/usbdev.sh
deleted file mode 100755
index 5b08ba22..00000000
--- a/skel-root/coolstream/hd1/etc/mdev/usbdev.sh
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/bin/sh
-LOG="/bin/logger -p user.info -t mdev-usb"
-WARN="/bin/logger -p user.warn -t mdev-usb"
-
-flagLCD=/tmp/.lcd-${MDEV}
-
-# supported dpf-devices
-DPF="1908:0102"
-
-# supported spf-devices
-SPFstorage="04E8:200A 04E8:200E 04E8:200C 04E8:2012 04E8:2016 04E8:2025 04E8:2033 04E8:201C 04E8:2027 04E8:2035 04E8:204F 04E8:2039"
-SPFmonitor="04E8:200B 04E8:200F 04E8:200D 04E8:2013 04E8:2017 04E8:2026 04E8:2034 04E8:201B 04E8:2028 04E8:2036 04E8:2050 04E8:2040"
-# SPFmodel: ^SPF-72H  ^SPF-75H  ^SPF-83H  ^SPF-85H  ^SPF-85P  ^SPF-87H  ^SPF-87H  ^SPF-105P ^SPF-107H ^SPF-107H ^SPF-700T ^SPF-1000P
-# SPFmodel:           ^SPF-76H            ^SPF-86H  ^SPF-86P   old                                     new
-SPF="${SPFstorage} ${SPFmonitor}"
-
-DEVICES="${DPF} ${SPF}"
-for DEVICE in ${DEVICES}; do
-	V=$(echo ${DEVICE:0:4} | sed 's/^[0]*//' | tr [:upper:] [:lower:]) # lower case vendor  w/o leading zeros
-	P=$(echo ${DEVICE:5:4} | sed 's/^[0]*//' | tr [:upper:] [:lower:]) # lower case product w/o leading zeros
-
-	case "$ACTION" in
-		add|"")
-			#$LOG "trying to process ${DEVICE} (V:{$V} P:{$P}) on ${MDEV}"
-
-			uevent=/sys/class/usb_device/${MDEV}/device/uevent
-
-			test -e $uevent					|| continue
-			grep "^PRODUCT=${V}/${P}/*" $uevent >/dev/null	|| continue
-
-			$LOG "supported device (ID ${DEVICE}) on ${MDEV} found"
-
-			# dpf/spf-support
-			if $(echo "${DPF} ${SPF}" | grep -q "${DEVICE}"); then
-				$LOG "creating flagfile '$flagLCD'"
-				echo "${DEVICE}" > $flagLCD
-
-				if $(echo "${DPF} ${SPFstorage}" | grep -q "${DEVICE}"); then
-					$LOG "DPF or SPF in storage mode found"
-					$LOG "(re)starting lcd4linux"
-
-					service lcd4linux restart
-				fi
-
-				if $(echo "${SPFmonitor}" | grep -q "${DEVICE}"); then
-					$LOG "SPF in monitor mode found"
-					if [ -e /tmp/lcd4linux.pid ]; then
-						$LOG "do nothing"
-					else
-						$LOG "(re)starting lcd4linux"
-						service lcd4linux restart
-					fi
-				fi
-			fi
-		;;
-		remove)
-			#$LOG "trying to process ${DEVICE} (V:{$V} P:{$P}) on ${MDEV}"
-
-			# dpf/spf-support
-			if [ -e $flagLCD ]; then
-				grep "^${DEVICE}" $flagLCD >/dev/null	|| continue
-
-				$LOG "supported DPF/SPF (ID ${DEVICE}) removed from ${MDEV}"
-
-				if $(echo "${DPF} ${SPFmonitor}" | grep -q "${DEVICE}"); then
-					$LOG "DPF or SPF in monitor mode removed"
-					$LOG "stopping lcd4linux"
-
-					service lcd4linux stop
-				fi
-
-				if $(echo "${SPFstorage}" | grep -q "${DEVICE}"); then
-					$LOG "SPF in storage mode removed"
-					$LOG "do nothing"
-				fi
-
-				$LOG "removing flagfile '$flagLCD'"
-				rm -f $flagLCD
-			fi
-		;;
-	esac
-done
diff --git a/skel-root/coolstream/hd1/etc/mdev/wlan.sh b/skel-root/coolstream/hd1/etc/mdev/wlan.sh
deleted file mode 100755
index 37ff426a..00000000
--- a/skel-root/coolstream/hd1/etc/mdev/wlan.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/sh
-LOG="logger -p user.info -t mdev-wlan"
-WARN="logger -p user.warn -t mdev-wlan"
-
-case "$ACTION" in
-	add|"")
-		if [ -s /etc/wpa_supplicant.conf ]; then
-			$LOG "trying to bring $MDEV up"
-			ifup $MDEV
-		else
-			$WARN "/etc/wpa_supplicant.conf missing or empty, not trying to bring $MDEV up"
-		fi
-		;;
-	remove)
-		$LOG "trying to bring $MDEV down"
-		ifdown $MDEV
-		;;
-esac
diff --git a/skel-root/coolstream/hd1/lib/mdev/common/log b/skel-root/coolstream/hd1/lib/mdev/common/log
new file mode 100755
index 00000000..50bf918d
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/common/log
@@ -0,0 +1,33 @@
+#!/bin/sh
+# vim: se ft=sh:
+
+log_debug () {
+	logger -t "${0##*/}[$$]" -p local0.debug "$@"
+}
+log_error () {
+	logger -t "${0##*/}[$$]" -p local0.error "$@"
+}
+log_info () {
+	logger -t "${0##*/}[$$]" -p local0.info "$@"
+}
+
+log_warn () {
+	logger -t "${0##*/}[$$]" -p local0.warn "$@"
+}
+
+# can't get the return code from a piped process
+# cat /etc/passwd | log_error => $? is from log_error not cat ;(
+log_rt_error () {
+	local fifo=/tmp/.log_rt_error_$$
+	trap "trap - HUP QUIT TERM CHLD; log_error exited prematurely; rm -f $fifo; exit 1" \
+		HUP QUIT TERM
+	mkfifo -m 600 $fifo
+
+	trap "trap - HUP QUIT TERM CHLD; rm -f $fifo" CHLD
+	log_error <$fifo &
+	"$@" 2>$fifo
+}
+
+log_clean () {
+	unset -f log_debug log_error log_info log_rt_error
+}
diff --git a/skel-root/coolstream/hd1/lib/mdev/common/mdevlog b/skel-root/coolstream/hd1/lib/mdev/common/mdevlog
new file mode 100755
index 00000000..178021c9
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/common/mdevlog
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# log only when requested
+[ 0 -eq $# ] && exit 0
+
+. /lib/mdev/common/log
+env | egrep -v '^(HOME|PATH|PWD|CONFIG_.*)=' | log_debug
diff --git a/skel-root/coolstream/hd1/lib/mdev/common/mdevmodule b/skel-root/coolstream/hd1/lib/mdev/common/mdevmodule
new file mode 100755
index 00000000..ba908435
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/common/mdevmodule
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+. /lib/mdev/common/log
+log_info "${ACTION:-scan} module chain $@"
+/lib/mdev/common/mdevprobe "$@"
diff --git a/skel-root/coolstream/hd1/lib/mdev/common/mdevprobe b/skel-root/coolstream/hd1/lib/mdev/common/mdevprobe
new file mode 100755
index 00000000..d8b3fb2b
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/common/mdevprobe
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+[ "$ACTION" = remove ] && action='-r -a'
+
+. /lib/mdev/common/log
+for module in "$@"; do
+	modprobe $action $module &&
+		log_info "${ACTION:-scan} module $module succeed"
+done
diff --git a/skel-root/coolstream/hd1/etc/mdev/mdev-mount.sh b/skel-root/coolstream/hd1/lib/mdev/fs/mount
similarity index 72%
rename from skel-root/coolstream/hd1/etc/mdev/mdev-mount.sh
rename to skel-root/coolstream/hd1/lib/mdev/fs/mount
index 8e654b9b..a7cd5def 100755
--- a/skel-root/coolstream/hd1/etc/mdev/mdev-mount.sh
+++ b/skel-root/coolstream/hd1/lib/mdev/fs/mount
@@ -1,6 +1,9 @@
 #!/bin/sh
-LOG="logger -p user.info -t mdev-mount"
-WARN="logger -p user.warn -t mdev-mount"
+
+# based on script from http://gitorious.org/neutrino-hd/buildsystem-cs
+
+. /lib/mdev/common/log
+
 
 MOUNTBASE=/media
 MOUNTPOINT="$MOUNTBASE/$MDEV"
@@ -9,7 +12,7 @@ ROOTDEV=$(readlink /dev/root)
 # do not add or remove root device again...
 [ "$ROOTDEV" = "$MDEV" ] && exit 0
 if [ -e /tmp/.nomdevmount ]; then
-	$LOG "no action on $MDEV -- /tmp/.nomdevmount exists"
+	log_info "no action on $MDEV -- /tmp/.nomdevmount exists"
 	exit 0
 fi
 
@@ -58,24 +61,24 @@ remove_symlinks() {
 }
 
 case "$ACTION" in
-	add|"")
+	add)
 		if [ ${#MDEV} = 3 ]; then # sda, sdb, sdc => whole drive
 			PARTS=$(sed -n "/ ${MDEV}[0-9]$/{s/ *[0-9]* *[0-9]* * [0-9]* //;p}" /proc/partitions)
 			if [ -n "$PARTS" ]; then
-				$LOG "drive has partitions $PARTS, not trying to mount $MDEV"
+				log_info "drive has partitions $PARTS, not trying to mount $MDEV"
 				exit 0
 			fi
 		fi
 		if grep -q "/dev/$MDEV" /proc/mounts; then
-			$LOG "/dev/$MDEV already mounted - not mounting again"
+			log_info "/dev/$MDEV already mounted - not mounting again"
 			exit 0
 		fi
-		$LOG "[$ACTION] mounting /dev/$MDEV to $MOUNTPOINT"
+		log_info "[$ACTION] mounting /dev/$MDEV to $MOUNTPOINT"
 		# remove old mountpoint symlinks we might have for this device
 		rm -f $MOUNTPOINT
 		mkdir -p $MOUNTPOINT
 		for i in 1 2 3 4 5 6 7 8 9; do # retry 9 times for slow devices
-			# $LOG "mounting /dev/$MDEV to $MOUNTPOINT try $i"
+			# log_info "mounting /dev/$MDEV to $MOUNTPOINT try $i"
 			OUT1=$(mount -t auto /dev/$MDEV $MOUNTPOINT 2>&1 >/dev/null)
 			RET1=$?
 			[ $RET1 = 0 ] && break
@@ -84,21 +87,27 @@ case "$ACTION" in
 		if [ $RET1 = 0 ]; then
 			create_symlinks
 		else
-			$WARN "mount   /dev/$MDEV $MOUNTPOINT failed with $RET1"
-			$WARN "        $OUT1"
+			log_warn "mount   /dev/$MDEV $MOUNTPOINT failed with $RET1"
+			log_warn "        $OUT1"
 			rmdir $MOUNTPOINT
 		fi
+		if [ -x /bin/mdev_helper ]; then
+			/bin/mdev_helper
+		fi
 		;;
 	remove)
-		$LOG "[$ACTION] unmounting /dev/$MDEV"
+		log_info "[$ACTION] unmounting $MOUNTBASE/$MDEV"
 		grep -q "^/dev/$MDEV " /proc/mounts || exit 0 # not mounted...
-		umount -lf /dev/$MDEV
+		umount -lf $MOUNTBASE/$MDEV
 		RET=$?
 		if [ $RET = 0 ]; then
 			rmdir $MOUNTPOINT
 			remove_symlinks
 		else
-			$WARN "umount /dev/$MDEV failed with $RET"
+			log_warn "umount $MOUNTBASE/$MDEV failed with $RET"
+		fi
+		if [ -x /bin/mdev_helper ]; then
+			/bin/mdev_helper
 		fi
 		;;
 esac
diff --git a/skel-root/coolstream/hd1/lib/mdev/net/wlan b/skel-root/coolstream/hd1/lib/mdev/net/wlan
new file mode 100755
index 00000000..d9512ebe
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/net/wlan
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+. /lib/mdev/common/log
+
+case "$ACTION" in
+	add|"")
+		if [ -s /etc/wpa_supplicant.conf ]; then
+			log_info "trying to bring $MDEV up"
+			ifup $MDEV
+		else
+			log_warn "/etc/wpa_supplicant.conf missing or empty, not trying to bring $MDEV up"
+		fi
+		;;
+
+	remove)
+		log_info "trying to bring $MDEV down"
+		ifdown $MDEV
+		;;
+esac
\ No newline at end of file
diff --git a/skel-root/coolstream/hd1/lib/mdev/usb/eventvars b/skel-root/coolstream/hd1/lib/mdev/usb/eventvars
new file mode 100755
index 00000000..edd72e88
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/usb/eventvars
@@ -0,0 +1,32 @@
+#!/bin/false
+# vim: se ft=sh:
+
+for path in $(find /sys/devices -name "$MDEV" 2>/dev/null); do
+	DEVPATH=${path#/sys}
+done
+
+MODALIAS=$(cat /sys${DEVPATH}/modalias 2>/dev/null)
+
+parse_interface () {
+	printf '%d/%d/%d' $(sed 's/.*dp[0-F]\{2\}//;s/[iscp]\+/ 0x/g')
+}
+parse_type () {
+	printf '%d/%d/%d' $(sed 's/.*d[0-9]\{4\}//;s/ic.*//;s/[dscp]\+/ 0x/g')
+}
+parse_product () {
+	sed 's!^usb:\(.*\)dc.*!\1!;s![vpd]!/!g;s!/0\{1,3\}!/!g;s!^/!!;y!ABCDEF!abcdef!'
+}
+
+TYPE=$(echo $MODALIAS | parse_type)
+PRODUCT=$(echo $MODALIAS | parse_product)
+INTERFACE=$(echo $MODALIAS | parse_interface)
+
+for var in DEVPATH MODALIAS TYPE PRODUCT INTERFACE; do
+	if [ -z "$(eval "echo \$${var}")" ]; then
+		logerror "Could not set uevent environment variable $var"
+		exit 1
+	fi
+done
+
+unset path var
+unset -f parse_type parse_interface parse_product
diff --git a/skel-root/coolstream/hd1/lib/mdev/usb/usbcontrol b/skel-root/coolstream/hd1/lib/mdev/usb/usbcontrol
new file mode 100755
index 00000000..cdceb48a
--- /dev/null
+++ b/skel-root/coolstream/hd1/lib/mdev/usb/usbcontrol
@@ -0,0 +1,119 @@
+#!/bin/sh
+
+. /lib/mdev/common/log
+
+# setup environment for cold plug events
+[ -z "$ACTION" ] && . /lib/mdev/usb/eventvars
+
+# get proper product and manufacturer description (only works for ACTION=add)
+[ -z "$DEVPATH" ] && logerror 'uevent environment variable DEVPATH is unset' && exit 1
+if [ -d /sys${DEVPATH} ]; then
+	cd /sys${DEVPATH}/..
+	for f in product manufacturer id[PV]*; do
+		[ -r $f ] && eval "$f='$(cat $f)'"
+	done
+	cd $MDEV
+fi
+
+# get $idVendor and $idProduct from $MODALIAS if necessary
+idVendor=${idVendor:-${MODALIAS:5:4}}
+idProduct=${idProduct:-${MODALIAS:10:4}}
+# set $idVendor and $idProduct lower case and w/o leading zeros
+idVendor=$(echo ${idVendor} | sed 's/^[0]*//' | tr [:upper:] [:lower:])
+idProduct=$(echo ${idProduct} | sed 's/^[0]*//' | tr [:upper:] [:lower:])
+
+channel=${MDEV%:1.0}
+log_info "${ACTION} $channel ${manufacturer:-$idVendor} ${product:-$idProduct}"
+
+# for debug
+#log_info "ACTION=${ACTION}"
+#log_info "MDEV=${MDEV}"
+#log_info "DEVPATH=${DEVPATH}"
+#log_info "INTERFACE=${INTERFACE}"
+#log_info "MODALIAS=${MODALIAS}"
+#log_info "PRODUCT=${product} idProduct=${idProduct}"
+#log_info "MANUFACTURER=${manufacturer} idVendor=${idVendor}"
+
+# http://en.wikipedia.org/wiki/Universal_Serial_Bus#Device_classes
+# http://www.usb.org/developers/defined_class
+[ 0 -eq "${TYPE%%/*}" ] && TYPE=$INTERFACE
+log_info "type ${TYPE}"
+case $TYPE in
+	1/*/*)
+		log_info "$channel USB Audio Interface"
+		;;
+	2/*/*)
+		log_info "$channel Communications and CDC Control"
+		;;
+	3/*/*)
+		log_info "$channel HID (Human Interface Device)"
+		# precheck vendor id for unsupported DPF in bootloader mode
+		if [ "$idVendor" == "1908" ]; then
+			service extdisplay ${ACTION} ${MDEV} ${idVendor} ${idProduct}
+		fi
+		;;
+	5/*/*)
+		log_info "$channel Physical Interface"
+		;;
+	6/*/*)
+		log_info "$channel Image Interface"
+		;;
+	7/*/*)
+		log_info "$channel Printer Interface"
+		;;
+	8/*/*)
+		log_info "$channel Mass Storage Interface"
+		# precheck vendor id for supported SPFs
+		if [ "$idVendor" == "4e8" ]; then
+			service extdisplay ${ACTION} ${MDEV} ${idVendor} ${idProduct}
+		fi
+		;;
+	9/*/*)
+		log_info "$channel HUB Device"
+		;;
+	10/*/*)
+		log_info "$channel CDC Data Interface"
+		;;
+	11/*/*)
+		log_info "$channel Smart Card Interface"
+		;;
+	13/*/*)
+		log_info "$channel Content Security Interface"
+		;;
+	14/*/*)
+		log_info "$channel Video Interface"
+		;;
+	15/*/*)
+		log_info "$channel Personal Healthcare Interface"
+		;;
+	16/*/*)
+		log_info "$channel usb Audio/Video Devices Interface"
+		;;
+	17/*/*)
+		log_info "$channel Billboard Device Class"
+		;;
+	220/*/*)
+		log_info "$channel Diagnostic Device"
+		;;
+	224/*/*)
+		log_info "$channel Wireless Controller Interface"
+		;;
+	239/*/*)
+		log_info "$channel Miscellaneous"
+		;;
+	254/*/*)
+		log_info "$channel Application Specific"
+		;;
+	255/*/*)
+		log_info "$channel Vendor Specific"
+		# precheck vendor id for supported DPFs and SPFs
+		if [ "$idVendor" = "1908" -o "$idVendor" == "4e8" ]; then
+			service extdisplay ${ACTION} ${MDEV} ${idVendor} ${idProduct}
+		fi
+		;;
+	*)
+		log_info "FALLBACK: $channel device $MODALIAS"
+		;;
+esac
+
+/lib/mdev/common/mdevprobe $MODALIAS