[i2c] i2c-pport with kernel 2.6.X ( fixed)

[pierre demanax]

Hi all,
 
I blacklisted the parport_pc module and set the bios parallel port to bidirectionnal and now it works! ( So I confirm that the i2c_pport module conflicts apparently with the parport_pc module)
I2cdetect detects the chips at the right address, and now I can write.
 
thanks all for the support.
 
regards.
vincent> Date: Wed, 25 Apr 2007 16:19:35 +0200> From: khali at linux-fr.org> To: baddemanax at hotmail.com> CC: i2c at lm-sensors.org> Subject: Re: [i2c] i2c-pport with kernel 2.6.X> > Hi Pierre,> > On Wed, 25 Apr 2007 11:29:36 +0200, pierre demanax wrote:> > Hi jean,> > > > Many thanks for those explanation, now i understand why some of those files > > didn't match those of my kernel source.> > > > I did further investigation about i2c over parallel port as it doesn't work > > yet on my system. I managed to get a scope and I tried to monitor signal on > > my port.> > Actually I get NO HW activity on the port ( i tried i2cpport, as well as > > i2c-parport with different pining, with the i2cdetect or sensors-detect > > function..)> > > > Then I installed a parallel printer with appropriate drivers to check if the > > port is well working :-). That part work.> > > > I guess i am doing something wrong.> > > > Next I summarize what I do in order to use the i2c over // port, maybe > > someone could correct me:> > > > I self compiled my kernel which is a 2.6.20 ( I included all the i2c package > > in the make menuconfig)> > Then I did an apt-get install lm-sensors. ( my system is a debian sarge with > > a new kernel)> > Next I added the i2c_pport from rudolf marek, That i compiled with the help > > of the i2c-community.> > > > In order to use the i2c , i modprobe manually the following ones:> > modprobe i2c-algo-bit> > modprobe i2c-dev> > insmod i2c-pport.ko ( modprobe doesn't work for that one) OR> > modprobe i2c-parport type=1 ....> > > > then I do i2cdetect 0 and also sensors-detect> > In the latter there is a message to detect sensors on the primitive parallel > > port or the parallel port that give me the impression the driver is well > > loaded.> > > > During the detection i used the scope on the pining refered in the > > documentation. But on my system there are no activities ?> > > > Did i forget something ?> > I seem to remember that i2c-pport only works when the parallel port is> in standard mode, not when it is in EPP/ECP mode. Check the mode in> your BIOS.> > I also noticed that I wasn't able to use i2c-parport-light once the> "parport_pc" module has been loaded. parport_pc seems to somehow> reconfigure the parallel port in such a way that i2c-parport-light> can't do anything with it afterwards. So I suggest that you blacklist> the other drivers related to parallel port (such as lp) to make sure> they don't get automatically loaded.> > Other than that, I don't know, sorry.> > > regards,> > vincent> > Il faudrait savoir, c'est Pierre ou Vincent ? :p> > -- > Jean Delvare
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