On Tue, 2008-05-13 at 20:20 +0200, Hans Verkuil wrote: > On Tuesday 13 May 2008 13:50:18 [EMAIL PROTECTED] wrote: > > Hello everyone > > > > A few weeks ago, I bought a Video Encoder Card in Japan with the goal > > of using it there in a MythTV box. > > > > The card is branded "BUFFALO" and is called "PC-MV5L/PCI". The > > package says: "MPEG2 Hardware Encoder, TV tuner & VHS video capture > > board" (in Japanese). > > > > When booting my system, the kernel tells me that the card is unknown > > and that I should mail details to this mailing list (details are > > appended below). [Loading the firmware seems to be ok, though.] > > > > I compiled the latest kernel 2.6.25.3 from kernel.org to make sure I > > am not missing any important recent additions. > > > > The main chips on the PCI board are labeled: > > XCEIVE XC2028ACQ > > CONEXANT CX25843-24Z > > CONEXANT CX23416-22 MPEG II A/V ENCODER > > hynix 625A (memory?) > > > > As far as I can see in drivers/media/video/ivtv/ivtv-cards.c there > > might be a chance of getting this to run, since both the tuner > > (XC2028) and the MPEG2 Encoder (CX23416) seem to be supported by IVTV > > for other cards. > > > > Unfortunately, I have no clue how to come up with a new entry for > > ivtv-cards.c to recognize my device. I can provide more details about > > all the logic chips on the board, contents of the Windows driver cd, > > photographs of the board, or anything else. Just let me know. > > > > If anyone is able to help, I'd appreciate it very much! > > OK, a new card. There we go: > > 1) Get the new buffalo tree here: > http://linuxtv.org/hg/~hverkuil/buffalo/archive/tip.tar.bz2 > > 2) make, make install, and run modprobe ivtv. > > 3) The card should be autodetected, now see if it works. Start with the > composite input (select using v4l2-ctl -i2). > > 4) If it does not work, then edit ivtv-cards.c: search for the > ivtv_card_buffalo struct, check out the line: > > { IVTV_CARD_INPUT_COMPOSITE1, 1, CX25840_COMPOSITE3 }, > > in video_inputs. Replace CX25840_COMPOSITE3 with CX25840_COMPOSITE1 and > try again. Then test with CX25840_COMPOSITE2, etc. etc. until > COMPOSITE8. One of these 8 possible inputs should work. > > Next try S-Video input (v4l2-ctl -i1): edit the line > > { IVTV_CARD_INPUT_SVIDEO1, 1, CX25840_SVIDEO3 }, > > and replace SVIDEO3 with SVIDEO1-4 and see which one works. If none of > these works, or you get only black & white then make a note of which > input gives B&W and let me know. We can get color to work later. > > 5) Tuner: first get the firmware. See the file > linux/Documentation/video4linux/extract_xc3028.pl for instructions. > > 6) Now modprobe ivtv. Then run rmmod ivtv and modprobe ivtv again. If > you get errors in the kernel log regarding the xceive tuner, then you > need to change the xceive_pin setting in the buffalo card definition. > It should be in the range 8-15. Try 10 first. > > 7) Congratulations, the tuner is now working. The final step is to find > the correct composite input for the tuner by editing the line: > > { IVTV_CARD_INPUT_VID_TUNER, 0, CX25840_COMPOSITE2 }, > > Again, it can be any value from COMPOSITE1-8. For audio you may have to > change the line: > > { IVTV_CARD_INPUT_AUD_TUNER, CX25840_AUDIO5 }, > > Possible values: AUDIO4-8. > > 8) Done! > > It's a bit annoying to go through all the combinations but it is the > only way to do it. > > BTW: check if your board has a WM8739 or MW8775 chip: that's a not > uncommon audio chip. > > Regards, > > Hans
Hans, This seems like wiki material. I think it needs a forward section about building a starting card entry ivtv-cards.c and some tweaks to make it more generic, but it is a methodical process well worth documenting. If you ever have time to write up an e-mail with a draft or sketch of the total process, making note of all the "oh by the way"s (which I suspect maybe only you know), I'll try to find time to clean it up and get it on the wiki. Since cx18 is "bone of ivtv's bone and flesh of ivtv's flesh", this process can be adapted to apply to getting new cards working for cx18 as well. -Andy _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
