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bktr.4 (93346) bktr.4 (117011)
1.\"
1.\"
2.\" $FreeBSD: head/share/man/man4/bktr.4 93346 2002-03-28 17:03:21Z schweikh $
2.\" $FreeBSD: head/share/man/man4/bktr.4 117011 2003-06-28 23:53:39Z ru $
3.\"
4.Dd January 28, 1998
5.Dt BKTR 4
6.Os
7.Sh NAME
8.Nm brooktree
9.Nd video capture driver
10.Sh SYNOPSIS

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15.Cd device smbus
16.Sh DESCRIPTION
17The
18.Nm bktr
19driver provides support for PCI
20.Em video
21capture and
22.Em VBI
3.\"
4.Dd January 28, 1998
5.Dt BKTR 4
6.Os
7.Sh NAME
8.Nm brooktree
9.Nd video capture driver
10.Sh SYNOPSIS

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15.Cd device smbus
16.Sh DESCRIPTION
17The
18.Nm bktr
19driver provides support for PCI
20.Em video
21capture and
22.Em VBI
23capture on low cost, high performance boards. The driver is based on
24the Matrox Meteor driver and uses the same API. The bktr driver should support most video cards
23capture on low cost, high performance boards.
24The driver is based on the Matrox Meteor driver and uses the same API.
25The bktr driver should support most video cards
25based on the
26.Em "Brooktree Bt848/849/878/879 Video Capture Chip" .
27The driver also supports
28.Em FM Radio
29if the tuner supports it.
30.Pp
31Specifically, the following cards are known to work:
32.Bd -unfilled -offset indent

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57and
58.Xr smbus 4
59controller declarations are mandatory to activate bktr support.
60.Pp
61The following kernel parameters may be used to further configure the driver:
62.Pp
63.Em options "BROOKTREE_ALLOC_PAGES=xxx"
64specifies the number of contiguous pages to allocate when successfully
26based on the
27.Em "Brooktree Bt848/849/878/879 Video Capture Chip" .
28The driver also supports
29.Em FM Radio
30if the tuner supports it.
31.Pp
32Specifically, the following cards are known to work:
33.Bd -unfilled -offset indent

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58and
59.Xr smbus 4
60controller declarations are mandatory to activate bktr support.
61.Pp
62The following kernel parameters may be used to further configure the driver:
63.Pp
64.Em options "BROOKTREE_ALLOC_PAGES=xxx"
65specifies the number of contiguous pages to allocate when successfully
65probed. The default number of pages allocated by the kernel is 216.
66probed.
67The default number of pages allocated by the kernel is 216.
66This means that there are (216*4096) bytes available for use.
67.Bd -unfilled
68.Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
69.Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
70.Ed
71One of these options can be used to set the default video format for the driver.
72This fixed random hangs and lockups with the VideoLogic Captivator PCI card.
73.Pp

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68This means that there are (216*4096) bytes available for use.
69.Bd -unfilled
70.Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
71.Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
72.Ed
73One of these options can be used to set the default video format for the driver.
74This fixed random hangs and lockups with the VideoLogic Captivator PCI card.
75.Pp

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