On Thu, 1 Mar 2007 07:11:11 +1100 Nick Andrew <nick-linuxtv@xxxxxxxxxxxxxxx> wrote: > I'm trying to hack the m920x driver for my "LifeView TV Walker Twin" > DVB-T USB 2.0. Having some success and some failure, cause I'm new > to this and I mostly don't know what I'm doing. > > The device has an M9206, two TDA10046A, and two TDA8275A. Mine seems > to be permanently in the "warm" state now, so despite the work I did > to extract the firmware, it seems I don't need it at the moment. Both m920x and TDA8275A can work with supplied or eeprom firmware. > > I'm using the latest code from the main hg repository. > > Questions :- > > - It has 2 tuners and 2 demodulators. I think I found the two > demodulators, at addresses 0x10 and 0x16. I have no idea how to > represent two of them in the code. You'll notice that I call > dvb_attach twice, but it overwrites the return value. > Does m920x_state need to be extended for this? You should probably try with only one set of tuners and demods at first. I do not think this is currently possible without at least some hacking. In theory you could define another adapter in dvb_usb_device_properties. m9206_i2c_xfer in head does not support i2c messages supplied by the tda8275 module, thus I would suggest that you work against msi-digivox-mini-ii.diff .You can simply commit this patch to your local repo... > > - I have no idea where the two tuners are. I set up a loop to query > all 255 addresses and the module reports failure on the first one > then hangs trying to query the second one. The loop technique > worked to find the demodulators at least :-) > > I'm running this under vmware emulation so it doesn't break the > host machine. Take a look at http://www.linuxtv.org/pipermail/linux-dvb/2006-November/014682.html and http://www.linuxtv.org/pipermail/linux-dvb/2007-February/016252.html . I haven't yet seen a m920x setup with two demods so I wouldn't know how the m920x initialization needs to be done. I really didn't even know it can work with two demods. By examining i2c messages, you should have no trouble figuring out where those tuners live. > > I've attached my hacked m9206.c module and kernel log. > > Nick. -- Aapo Tahkola _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
