1
2 IMPORTANT: Don't send me mails with images attached unless I ask you
3 to do so. Mails with images attached will go to /dev/null unseen.
4
5
6 Release notes for bttv-0.7.x
7 ============================
8
9 This version is based on Ralphs 0.6.4 release. There are alot of
10 changes. Bugfixes, merged patches from other people, merged fixes
11 from the kernel version, port to the new i2c stack, removed support
12 for 2.0.x, code cleanups, ...
13
14 To compile this bttv version, you'll the new i2c stack. Kernels
15 newer than 2.3.34 have this already included. If you have a older
16 kernel, download it from:
17 http://www2.lm-sensors.nu/~lm78/download.html
18
19 You'll need at least these i2c config options for bttv:
20 CONFIG_I2C=m
21 CONFIG_I2C_ALGOBIT=m
22
23 The latest bttv version is available here:
24 http://www.strusel007.de/linux/bttv/
25
26 You'll find Ralphs original (mostly outdated) documentation in the
27 ralphs-doc subdirectory.
28
29
30 Compile bttv
31 ------------
32
33 If you are compiling the kernel version, just say 'm' if you are asked
34 for bttv. I /strongly/ recommend to compile bttv as module, because
35 there are some insmod options for configuring the driver. Starting
36 with 0.7.49 the most important ones are available as kernel args too.
37
38 If you downloaded the separate bttv bundle: You need configured kernel
39 sources to compile the bttv driver. The driver uses some Makefile
40 magic to compile the modules with your kernel's configuration
41 (wrt. module-versions, SMP, ...). If you already have compiled the
42 kernel at least once, you probably don't have do worry about this. If
43 not, go to /usr/src/linux and run at least "make config". Even
44 better, compile your own kernel, you'll never become a real hacker
45 else ;-)
46 Note that you have to turn on video4linux support (CONFIG_VIDEO_DEV)
47 in the kernel to get the videodev.o module which is required by bttv.
48
49
50 Make bttv work with your card
51 -----------------------------
52
53 Of course you have to load the modules as very first thing. The
54 separate bttv bundle comes with a script called "update". I use this
55 one to load a new version while doing driver hacking. You can use it
56 too, but check the module arguments first. They work for my setup,
57 and probably do *not* for yours. Another way is to setup your
58 /etc/modules.conf file and let kmod load the modules. See also:
59
60 Modules.conf: some sample entries for /etc/modules.conf
61 Insmod-options: list of all insmod options available for bttv and
62 the helper modules.
63 MAKEDEV: a script to create the special files for v4l
64 CARDLIST: List of all supported cards
65
66 Loading just the bttv modules isn't enouth for most cards. The
67 drivers for the i2c tuner/sound chips must also be loaded. bttv tries
68 to load them automagically by calling request_module() now, but this
69 obviously works only with kmod enabled.
70
71 The most important insmod option for bttv is "card=n" to select the
72 correct card type. If you get video but no sound you've very likely
73 specified the wrong (or no) card type. A list of supported cards is
74 in CARDLIST.
75
76 If your card isn't listed in CARDLIST or if you have trouble making
77 audio work, you should read the Sound-FAQ.
78
79
80 Still doesn't work?
81 -------------------
82
83 I do NOT have a lab with 30+ different grabber boards and a
84 PAL/NTSC/SECAM test signal generator at home, so I often can't
85 reproduce your problems. This makes debugging very difficult for me.
86 If you have some knowledge and spare time, please try to fix this
87 yourself (patches very welcome of course...) You know: The linux
88 slogan is "Do it yourself".
89
90 There is a mailing list: video4linux-list@redhat.com. If you have
91 trouble with some specific TV card, try to ask there instead of
92 mailing me directly. The chance that someone with the same card
93 listens there is much higher...
94
95 For problems with sound: There are alot of different systems used
96 for TV sound all over the world. And there are also different chips
97 which decode the audio signal. Reports about sound problems ("stereo
98 does'nt work") are pretty useless unless you include some details
99 about your hardware and the TV sound scheme used in your country (or
100 at least the country you are living in).
101
102
103 Finally: If you mail some patches for bttv around the world (to
104 linux-kernel/Alan/Linus/...), please Cc: me.
105
106
107 Have fun with bttv,
108
109 Gerd
110
111 --
112 Gerd Knorr <kraxel@goldbach.in-berlin.de>
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