Re: [irda-users] STLabs (SigmaTel) 4220 dongle problem

[Thomas I. <il...@gm...>]

Nick Fedchik schrieb:

>Monday 30 January 2006 13:41 Nick Fedchik wrote:
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>>I have a system hangup using STLabs 4220 IrDA adaptor sometime
>>and can't set up valid config to connect my Siemens S55 via STLabs 4220
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>>My config is below:
>>Kernel Linux titan 2.6.14-std26-up-alt3 #1 Fri Jan 13 12:29:59 MSK 2006
>>i686 GNU/Linux Host name "titan", two dongles plugged to USB ports
>>STLabs 4220 assigned to irda0
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>/proc/bus/usb about STLabs 4220:
>T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  3 Spd=480 MxCh= 0
>D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
>P:  Vendor=066f ProdID=4210 Rev=10.02
>S:  Manufacturer=SigmaTel, Inc.
>S:  Product=STIr42xx
>S:  SerialNumber=0002F0F02CA3D7A3
>C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
>I:  If#= 0 Alt= 0 #EPs= 2 Cls=fe(app. ) Sub=02 Prot=00 Driver=irda-usb
>E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
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>Recently a new type of USB dongle from SigmaTel has appeared on the market 
>which is _not_ compliant with the IrDA-USB specification, and therefore 
>doesn't work with this driver. On the other hand, SigmaTel has made available 
>the full technical specification  , so writing a driver for it is possible.
>(http://programming.linux.com/howtos/Infrared-HOWTO/infrared-howto-s-irda-usb.shtml)
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this refers to the 4200
the 4220 seems to be somewhat more usb-irda compilant, but it requires a 
firmware patch to operate properly.


See this message:

Hi

(sorry for not replying - was not receiving the list last September)

Just wanted to contribute, that at 
http://althaia.across.sk/~naiki/linux/index.html there's a port of the 
driver from Sigmatel for 2.4 to 2.6 by Naiki (my Czech is not too 
good:-), but I do think he was the author, as follows from 
http://www.abclinuxu.cz/forum/show/81434). After applying the patch 
below it also works quite well, apart from one thing: similar to 2.4 
kernel we have a problem when some disturbances come while in FIr mode. 
We test with a PPP connection to another Linux system in FIr mode with 
4mbps. As the connection gets lost, the parties switch back to SIr 9600, 
but even before that still in FIr __sometimes__ the 4210 seems to just 
stop reacting to USB requests to the bulk emdpoinds. Here is a snipplet 
from the usbmon under 2.6.15:

you may need the firmware patch files, wich are avail for download from 
sigmatel's server

>BUT Vendor says than this dongle is linux-compatible:
>
>VFIR/IR: STIR4210/4220/4116
>USB 2.0 Hi-Speed to IrDA Bridge
>...
>* Supports MAC OS, Linux, WinME, Win2000, Win XP and later Windows OSs
>(http://www.sigmatel.com/products/portable/wireless/stir4210.asp)
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>So I haven't chance to get a valid module for SigmaTel USB dongle?
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