Marko Ristola wrote: > > Hi Manu and others, > > On my DVB Mantis chip, there is > K61468.2A-2 > 041213 > > With the attached patch, I am able to see Finnish HTV cable TV, > unencrypted channels, > with my Mantis VP-2033. It uses the cu1216 kernel module. > The patch can be applied to the Mantis Alpha version that Manu released > (this thread > began with the release note and a reference to the source code). > > cd mantis-25021de30f36 > patch -p1 < /tmp/mantis-alpha-changes.diff > > Here are the changed files: > linux/drivers/media/dvb/dvb-core/dvb_net.c (just to make it compilable, > not my fix initially, for completeness only). > linux/drivers/media/dvb/frontends/cu1216.c (dvb-core is able to do a > lock into the given frequency). > patching file linux/drivers/media/dvb/mantis/mantis_dma.c (demuxer fix, > lock status reading fix). > > Here are answers for You, Manu: > > Manu Abraham wrote: >> DMA should be started only after a LOCK, but it is not the driver that >> which starts the DMA but it is in the dvb-core. Need to see why DMA is >> initiated much earlier, causing garbage in the buffers. >> >> I will check it out in the coming few days. >> >> > The patch that I have attached, has function cu1216_get_tune_settings() > It sets a 50ms time delay. I'm able to get a lock with that delay > without any hacks > in cu1216_set_parameters() function. > > I removed the interlace selection in cu1216_set_parameters(). > cu1216_set_parameters() will also return 0 on success. > > MANTIS_GPIF_ADDR changes are needed to enable dvb-core to read the lock > status after DMA start. So this is the 0x3000 case. > Quite helpful indeed that you were able to dig into this. > Garbage in the buffers is fixed for me (scratch screen becomes working > video and audio), > when I use dvb_dmx_swfilter() instead of dvb_dmx_swfilter_204(). This is > in file mantis_dma.c. > > "scan" binary is able to find channels after a fresh reboot. > After using DVB applications, "scan" won't work anymore. > > I never use rmmod. I suspect memory corruption then. > > If you like, you can attach some of my fixes with the following GPL v2 > licence. > I accept this license for my cu1216.c and mantis_dma.c changes, > because you have selected that license for those files: > > This program is free software; you can redistribute it and/or modify > it under the terms of the GNU General Public License as published by > the Free Software Foundation; either version 2 of the License, or > (at your option) any later version. > > Regards, > Marko Ristola > > > ------------------------------------------------------------------------ > > diff -r -c mantis.old/linux/drivers/media/dvb/dvb-core/dvb_net.c mantis/linux/drivers/media/dvb/dvb-core/dvb_net.c > *** mantis.old/linux/drivers/media/dvb/dvb-core/dvb_net.c 2006-10-19 17:24:03.000000000 +0300 > --- mantis/linux/drivers/media/dvb/dvb-core/dvb_net.c 2006-10-19 17:46:41.000000000 +0300 > *************** can you please create a diff in the unified format ? , ie, diff -up options ? Please do send the core diff also as a separate patch. Thanks, Manu _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
