On Samstag, 9. Januar 2010, JD Louw wrote: > On Wed, 2010-01-06 at 22:17 +0200, Theunis Potgieter wrote: > > 2010/1/2 JD Louw <jd.louw@xxxxxxxxxx>: > > > On Sat, 2010-01-02 at 09:39 +0200, Theunis Potgieter wrote: > > >> 2010/1/1 JD Louw <jd.louw@xxxxxxxxxx>: > > >> > On Tue, 2009-12-29 at 23:23 +0200, Theunis Potgieter wrote: > > >> >> Hi mailing list, > > >> >> > > >> >> I have a problem with my Compro S300 pci card under Linux 2.6.32. > > >> >> > > >> >> I cannot tune with this card and STR/SNRA is very bad compared to > > >> >> my Technisat SkyStar 2 pci card, connected to the same dish. > > >> >> > > >> >> I have this card and are willing to run tests, tested drivers etc > > >> >> to make this work. > > >> >> > > >> >> I currently load the module saa7134 with options: card=169 > > >> >> > > >> >> I enabled some debug parameters on the saa7134, not sure what else > > >> >> I should enable. Please find my dmesg log attached. > > >> >> > > >> >> lsmod shows : > > >> >> > > >> >> # lsmod > > >> >> Module Size Used by > > >> >> zl10039 6268 2 > > >> >> mt312 12048 2 > > >> >> saa7134_dvb 41549 11 > > >> >> saa7134 195664 1 saa7134_dvb > > >> >> nfsd 416819 11 > > >> >> videobuf_dvb 8187 1 saa7134_dvb > > >> >> dvb_core 148140 1 videobuf_dvb > > >> >> ir_common 40625 1 saa7134 > > >> >> v4l2_common 21544 1 saa7134 > > >> >> videodev 58341 2 saa7134,v4l2_common > > >> >> v4l1_compat 24473 1 videodev > > >> >> videobuf_dma_sg 17830 2 saa7134_dvb,saa7134 > > >> >> videobuf_core 26534 3 > > >> >> saa7134,videobuf_dvb,videobuf_dma_sg tveeprom 12550 > > >> >> 1 saa7134 > > >> >> thermal 20547 0 > > >> >> processor 54638 1 > > >> >> > > >> >> # uname -a > > >> >> Linux vbox 2.6.32-gentoo #4 Sat Dec 19 00:54:19 SAST 2009 i686 > > >> >> Pentium III (Coppermine) GenuineIntel GNU/Linux > > >> >> > > >> >> Thanks, > > >> >> Theunis > > >> > > > >> > Hi, > > >> > > > >> > It's probably the GPIO settings that are wrong for your SAA7133 > > >> > based card revision. See > > >> > http://osdir.com/ml/linux-media/2009-06/msg01256.html for an > > >> > explanation. For quick confirmation check if you have 12V - 20V DC > > >> > going to your LNB. The relevant lines of code is in > > >> > ~/v4l-dvb/linux/drivers/media/video/saa7134/saa7134-cards.c: > > >> > > > >> > case SAA7134_BOARD_VIDEOMATE_S350: > > >> > dev->has_remote = SAA7134_REMOTE_GPIO; > > >> > saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x00008000, 0x00008000); > > >> > saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x00008000, 0x00008000); > > >> > break; > > >> > > >> Hi thanks for the hint. I changed it to the following: > > >> > > >> case SAA7134_BOARD_VIDEOMATE_S350: > > >> dev->has_remote = SAA7134_REMOTE_GPIO; > > >> saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0000c000, 0x0000c000); > > >> saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x0000c000, 0x0000c000); > > >> break; > > >> > > >> I now get the same SNR as on my skystar2 card, signal is still > > >> indicating 17% where as the skystar2 would show 68%. At least I'm > > >> getting a LOCK on channels :) > > >> > > >> Thanks! > > >> > > >> > Looking at your log, at least the demodulator and tuner is > > >> > responding correctly. You can see this by looking at the i2c traffic > > >> > addressed to 0x1c (demodulator) and 0xc0 (tuner). Attached is a > > >> > dmesg trace from my working SAA7130 based card. > > >> > > > >> > Regards > > >> > JD > > > > > > Hi, > > > > > > Just to clarify, can you now watch channels? > > > > > > At the moment the signal strength measurement is a bit whacked, so > > > don't worry too much about it. I also get the 75%/17% figures you > > > mentioned when tuning to strong signals. The figure is simply reported > > > wrongly: even weaker signals should tune fine. If you want you can have > > > a look in ~/v4l-dvb/linux/drivers/media/dvb/frontends/mt312.c at > > > mt312_read_signal_strength(). > > > > > > Also, if you have a multimeter handy, can you confirm that the > > > 0x0000c000 GPIO fix enables LNB voltage? I'd like to issue a patch for > > > this. I've already tested this on my older card with no ill effect. > > > > This is what happened when I started vdr. > > > > Vertical gave a Volt reading between 13.9 and 14.1, Horizontal Gave > > 19.4 ~ 19.5. When I stopped vdr, the Voltage went back to 14V. I > > thought that it would read 0V. What is suppose to happen? > > > > Theunis > > > > > Regards > > > JD > > Hi, > > The newer revision cards should be able to shut down LNB power when the > card is closed. This is what the Windows driver does; not yet > implemented in Linux. Do you know how this is done hardware-wise? Is this a gpio connected circuit? If yes, I think it can be enabled in software by saving original pointer to set_voltage and overwriting it by some routine switching gpio and calling original function. Regards Matthias -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
