91 lines
2.8 KiB
Text
91 lines
2.8 KiB
Text
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How to get the Nebula, PCTV and Twinhan DST cards working
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=========================================================
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This class of cards has a bt878a as the PCI interface, and
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require the bttv driver.
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Please pay close attention to the warning about the bttv module
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options below for the DST card.
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1) General informations
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=======================
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These drivers require the bttv driver to provide the means to access
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the i2c bus and the gpio pins of the bt8xx chipset.
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Because of this, you need to enable
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"Device drivers" => "Multimedia devices"
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=> "Video For Linux" => "BT848 Video For Linux"
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2) Loading Modules
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==================
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In general you need to load the bttv driver, which will handle the gpio and
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i2c communication for us. Next you need the common dvb-bt8xx device driver
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and one frontend driver.
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The bttv driver will HANG YOUR SYSTEM IF YOU DO NOT SPECIFY THE CORRECT
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CARD ID!
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(If you don't get your card running and you suspect that the card id you're
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using is wrong, have a look at "bttv-cards.c" for a list of possible card
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ids.)
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Pay attention to failures when you load the frontend drivers
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(e.g. dmesg, /var/log/messages).
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3a) Nebula / Pinnacle PCTV
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--------------------------
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$ modprobe bttv i2c_hw=1 card=0x68
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$ modprobe dvb-bt8xx
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For Nebula cards use the "nxt6000" frontend driver:
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$ modprobe nxt6000
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For Pinnacle PCTV cards use the "cx24110" frontend driver:
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$ modprobe cx24110
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3b) TwinHan
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-----------
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$ modprobe bttv i2c_hw=1 card=0x71
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$ modprobe dvb-bt8xx
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$ modprobe dst
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The value 0x71 will override the PCI type detection for dvb-bt8xx, which
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is necessary for TwinHan cards.#
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If you're having an older card (blue color circuit) and card=0x71 locks your
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machine, try using 0x68, too. If that does not work, ask on the DVB mailing list.
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The DST module takes a couple of useful parameters, in case the
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dst drivers fails to detect your type of card correctly.
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dst_type takes values 0 (satellite), 1 (terrestial TV), 2 (cable).
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dst_type_flags takes bit combined values:
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1 = new tuner type packets. You can use this if your card is detected
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and you have debug and you continually see the tuner packets not
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working (make sure not a basic problem like dish alignment etc.)
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2 = TS 204. If your card tunes OK, but the picture is terrible, seemingly
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breaking up in one half continually, and crc fails a lot, then
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this is worth a try (or trying to turn off)
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4 = has symdiv. Some cards, mostly without new tuner packets, require
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a symbol division algorithm. Doesn't apply to terrestial TV.
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You can also specify a value to have the autodetected values turned off
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(e.g. 0). The autodected values are determined bythe cards 'response
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string' which you can see in your logs e.g.
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dst_check_ci: recognize DST-MOT
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or
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dst_check_ci: unable to recognize DSTXCI or STXCI
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--
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Authors: Richard Walker, Jamie Honan, Michael Hunold
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