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update bt8xx documentation (Uwe Bugla) Signed-off-by: Johannes Stezenbach <js@linuxtv.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
80 lines
2.7 KiB
Plaintext
80 lines
2.7 KiB
Plaintext
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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Furthermore you need to enable
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"Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices"
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=> "DVB for Linux" "DVB Core Support" "Nebula/Pinnacle PCTV/TwinHan PCI Cards"
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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, plus the common dvb-bt8xx device driver.
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The frontends for Nebula (nxt6000), Pinnacle PCTV (cx24110) and
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TwinHan (dst) are loaded automatically by the dvb-bt8xx device driver.
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3a) Nebula / Pinnacle PCTV
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--------------------------
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$ modprobe bttv (normally bttv is being loaded automatically by kmod)
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$ modprobe dvb-bt8xx (or just place dvb-bt8xx in /etc/modules for automatic loading)
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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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