During work on an Itronix Duotouch tablet PC with a Wacom Penabled TabletPC touchscreen, we updated the /usr/share/sax/api/data/cdb/Touchscreens so that Yast2 will recognize and configure the touchscreen.  I also made changes to the template in the file below to better document how this configuration file works.

# /.../
# Copyright (c) 2000 SuSE GmbH Nuernberg, Germany.  All rights reserved.
# Author: Marcus Schaefer <sax@suse.de>, 2001
#
# Template for touchscreen data
# ------------------------------
# <VENDOR NAME>:<DEVICE NAME>  {
#  Driver               = driver...
#  Protocol             = protocol...
#  Device               = device name...
#  SampleRate           = sample rate...
#  Emulate3Buttons      = <on> or <off>
#  Emulate3Timeout      = timeout val...
#  ChordMiddle          = <on> or <off>
#  MinX                 = area border...
#  MaxX                 = area border...
#  MinY                 = area border...
#  MaxY                 = area border...
#  Rotation             = 0 | 90 | 270
#  ScreenNumber         = integer...
#  ReportingMode        = mode...
#  ButtonThreshold      = integer...
#  ButtonNumber         = integer...
#  SendCoreEvents       = <on> or <off>
#  ClearRTS             = <on> or <off>
#  ClearDTR             = <on> or <off>
#  ZAxisMapping         = [ N M ] or X or Y
#  TouchType            = string
#  Mode                 = string
#  Load                 = string
#  Option               = string,string
#  RawOption            = quotedoptionstring quotedvaluestring,...
# }

#----------------------#
# Mutouch Touchpad     #
#----------------------#
MUTOUCH:TOUCHSCREEN  {
 Driver               = mutouch
 Device               = /dev/ttyS1
 MinX                 = 0
 MaxX                 = 16350
 MinY                 = 0
 MaxY                 = 16350
 ScreenNumber         = 0
 ReportingMode        = Scaled
 TouchType            = Finger
 SendCoreEvents       = on
}

#----------------------#
# Microtouch Touchpad  #
#----------------------#
MICROTOUCH:TOUCHSCREEN {
 Driver               = microtouch
 ButtonNumber         = 1
 Device               = /dev/ttyS0
 MaxX                 = 16383
 MinY                 = 16383
 MaxY                 = 0
 MinX                 = 0
 Mode                 = Absolute
 TouchType            = Cursor
 Protocol             = Auto
 SendCoreEvents       = on
 BaudRate             = 9600
 RawOption            = "DataBits" "8","StopBits" "1","Parity" "None"
}

#---------------#
# Elo Touchpad  #
#---------------#
ELO:2300-TOUCHSCREEN  {
 Driver               = elographics
 Device               = /dev/ttyS0
 MinX                 = 231
 MaxX                 = 3868
 MinY                 = 3858
 MaxY                 = 272
 ScreenNumber         = 0
 ReportingMode        = Scaled
 ButtonThreshold      = 17
 ButtonNumber         = 1
 SendCoreEvents       = on
}


#--------------------------#
# Wacom Penabled TabletPC  #
#--------------------------#
  Wacom:PenabledTabletPC  {
  Driver               = wacom
  Device               = /dev/ttyS0
  SendCoreEvents       = on
  TouchType            = cursor
  Mode                 = Absolute
  RawOption            = "ForceDevice" "ISDV4"
}