Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/pci/README.bt848
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 ------------------------------------------------------------------------------- 2 Recent versions of 3.0-current have the bktr driver built in. Older versions 3 of 3.0 and all versions of 2.2 previous to 2.2.5 need to have the driver 4 files installed by hand. If you find you have no /sys/pci/brooktree848.c 5 file in your source tree, you will need to do the following: 6 7 cp ioctl_bt848.h /sys/i386/include/ 8 cp brktree_reg.h brooktree848.c /sys/pci/ 9 10 And in /sys/conf/files add: 11 pci/brooktree848.c optional bktr device-driver 12 13 ------------------------------------------------------------------------------- 14 In all cases you will need to add the driver to your kernel: 15 16 In your kernel configuration file: 17 controller pci0 #if you already have this line don't add it. 18 device bktr0 19 20 There is no need to specify DMA channels nor interrupts for this 21 driver. 22 23 ------------------------------------------------------------------------------- 24 Finally you need to create nodes for the driver: 25 26 Create a video device: 27 mknod /dev/bktr0 c 92 0 28 29 Create a tuner device: 30 mknod /dev/tuner0 c 92 16 31 32 Or, if your /dev/MAKEDEV script is up to date (and you can copy the latest 33 from /usr/src/etc/etc.i386/MAKEDEV) simply type: cd /dev && ./MAKEDEV bktr0 34 35 ------------------------------------------------------------------------------- 36 The code attempts to auto-probe code to detect card/tuner types. 37 The detected card is printed in the dmesg as the driver is loaded. If 38 this fails to detect the proper card you can override it in brooktree848.c: 39 40 #define OVERRIDE_CARD <card type> 41 42 where <card type> is one of: 43 CARD_UNKNOWN 44 CARD_MIRO 45 CARD_HAUPPAUGE 46 CARD_STB 47 CARD_INTEL 48 49 ------------------------------------------------------------------------------- 50 This model now separates the "tuner control" items into a minor device: 51 52 minor device layout: xxxxxxxx xxxT UUUU 53 54 UUUU: the card (ie UNIT) identifier, 0 thru 15 55 T == 0: video device 56 T == 1: tuner device 57 58 Access your tuner ioctl thru your tuner device handle and anything 59 which controls the video capture process thru the video device handle. 60 61 Certain ioctl()s such as video source are available thru both devices. 62 63 ------------------------------------------------------------------------------- 64 The bt848 driver consists of: 65 66 src/sys/i386/include/ioctl_bt848.h 67 src/sys/pci/brktree_reg.h 68 src/sys/pci/brooktree848.c 69 70
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