NAME

       smcinit - initialize the SMSC IrDA controler on various laptops

SYNOPSIS

       smcinit [OPTIONS]

DESCRIPTION

       Toshiba Satellite 1800, Satellite 5100, Tecra 9100 laptops and may be many other models are provided with
       a SMCS LPC47N227 SuperIO chip which is IrDA SIR/FIR capable.  The IrDA subsystem of the SuperIO  chip  is
       supported  by  the smc-ircc Linux kernel module.  Unfortunately the BIOS neither configurates the SuperIO
       chip IrDA subsystem (SIR port, FIR port, dma, irq, IrDA mode, power)  nor  sets  the  PCI-ISA  bridge  to
       decode  any  usable  port.  Linux kernel is thus prevented to detect the second UART making impossible to
       use it in SIR mode. For the same reason, the FIR mode smc-ircc is able to detect the  SuperIO  chip  but,
       once found the IrDA subsystem unconfigured, fails to install.

       While  this  problem will be fixed in Linux 2.6.x kernel series, the 2.4.x users are frustrated.  Daniele
       Peri, Rob Miller and Paul Hampson mananged to  build  little  utilities  that  initialize  the  LPC47N227
       SuperIO allowing smc-ircc IrDA kernel driver to detect and use the SMSC chip.

       My sole work was to put these utilities as one package, easy to install and use.

OPTIONS

       -V, --version
           Show program version and exit

       -h, --help
           Show a little help on options and exit

       -v, --verbose
           Increase the details about actions performed

       -t, --tty=device
           If  specified, the serial device will be unbound from the kernel stock serial driver.  It is there to
           replace an external call to setserial(1) to unset the UART of the device.  There is no default value.

       -s, --sirio=IO
           Set the SIR (serial infrared) I/O port address to IO. Default value is 0x3f8.

       -f, --firio=IO
           Set the FIR (fast infrared) I/O port address to IO. Default value is 0x130.

       -i, --firirq=IRQ
           Set the FIR (fast infrared) IRQ line to IRQ. Default value is 3.

       -d, --firdma=DMA
           Set the FIR (fast infrared) DMA channel to DMA. Default value is 3.

CONFIGURATION

       When system startup a script is run from /etc/init.d and which run appropriate SMC intialization utility.
       This  is done before PCMCIA startup because on Tecra 9100 and other models the orinoco_cs wireless driver
       will block the I/O region used 47N227 SuperIO.

       The only configuration file is /etc/sysconfig/smcinit and the variable SMCCONFIG can be set to "1800"  or
       "5100". By default "5100" value is used.

       1800
           for Toshiba Satellite 1800

       5100
           for Toshiba Satellite 5100 and Toshiba Tecra 9100

       The next step is to configure the kernel IrDA stack package to attach the smc-ircc driver.  This is Linux
       distribution specific. The main thing is that the device should be set  to  "irda0".  Run  the  following
       command:

       irattach irda0 -s

       Distribution specific configuration:

       SuSE
           Edit the /etc/sysconfig/irda and set IRDA_PORT=irda0

       RedHat
           Edit the /etc/sysconfig/irda and set DEVICE=irda0

NOTES

       The  smc-ircc  driver  is  preloaded  in  kernel.  I  tested  the  package only on Tecra 9100 without any
       additional step, but for Toshiba Satellite 1800 Daniele Peri sugest to put the  following  line  in  your
       /etc/modules.conf (on one line):

       options smc-ircc ircc_dma=3 ircc_irq=7 ircc_cfg=0x2e \
               ircc_sir=0x2e8 ircc_fir=0x2f8

       After that run the command:

       prompt# depmod -a

       If  the  laptop enter suspend mode, then resume operation the smc-ircc driver will stop working. You need
       to stop IrDA service, then SMCINIT, start SMCINIT, and finally start IrDA service. Simply put, the kernel
       driver must be unloaded, then  reloaded.

FILES

       /etc/sysconfig/smcinit
           Configuration file for SMCINIT startup script. It's shell script.

AUTHOR

       This  document  is  made by Claudiu Costin <claudiuc@kde.org> The utilities authors are Daniele Peri, Rob
       Miller and Paul Hampson.  Thomas Pinz made improvements to tosh-smcinit (the former tosh5100-smcinit)  to
       expand the number of Toshiba Satellite models supported.

SEE ALSO

       smcinit(7),
       tosh1800-smcinit(8),
       irattach(1),
       irdadump(1),
       http://irda.sourceforge.net/smcinit/ the SMCINIT package home page.