2fab5f6edd
Randall Hopper <rhh@ct.picker.com> GHUE/GBRIGHT bug Louis Mamakos made a new bt848 struct, including massive changes to the entire body of code, substituting array offsets with struct members. Randall Hopper aadded fixes of BT848_GHUE & BT848_GBRIG. I (fsmp): added polled hardware i2c routines, removed all existing software i2c routines. added eeprom support.
72 lines
2.0 KiB
Plaintext
72 lines
2.0 KiB
Plaintext
-------------------------------------------------------------------------------
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This model now separates the "tuner control" items into a minor device:
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Create a video device:
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mknod bktr0 c 79 0
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Create a tuner device:
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mknod tuner0 c 79 16
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minor device layout: xxxxxxxx xxxT UUUU
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UUUU: the card (ie UNIT) identifier, 0 thru 15
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T == 0: video device
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T == 1: tuner device
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Access your tuner ioctl thru your tuner device handle and anything
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which controls the video capture process thru the video device handle.
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Certain ioctl()s such as video source are available thru both devices.
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-------------------------------------------------------------------------------
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There are 3 files necessary for the bt848 driver:
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src/sys/i386/include/ioctl_bt848.h
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src/sys/pci/brktree_reg.h
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src/sys/pci/brooktree848.c
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Note that src/sys/i386/include/ioctl_meteor.h is no longer modifed in any way
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to support the bt848 boards (unless there were prio modifications that I am
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unaware of).
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-------------------------------------------------------------------------------
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There are 2 settings that you might need to make based on the type of card
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you have:
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--
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1:
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The code now attempts to auto-probe code to detect card/tuner types.
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The detected card is printed in the dmesg as the driver is loaded. If
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this fails to detect the proper card you can override it in brooktree848.c:
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#define OVERRIDE_CARD <card type>
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where <card type> is one of:
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CARD_UNKNOWN
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CARD_MIRO
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CARD_HAUPPAUGE
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CARD_STB
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CARD_INTEL
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--
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2:
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The following is for start-up convenience only, NOT mandatory:
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These options select the set of frequencies used by the tuner. In your
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kernel config file set ONE of:
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options DEFAULT_CHNLSET=1 # CHNLSET_NABCST
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options DEFAULT_CHNLSET=2 # CHNLSET_CABLEIRC
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Or, in pci/brooktree848.c, you can define ONE of:
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#define DEFAULT_CHNLSET CHNLSET_NABCST
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#define DEFAULT_CHNLSET CHNLSET_CABLEIRC
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CHNLSET_NABCST (North American Broadcast frequencies) is the default.
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CHNLSET_CABLEIRC selects the IRC cable frequencies.
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Frequeny tables for other frequencies are yet to be written.
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