Commit 7bb97dfd authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: doc: ReSTize Bt87x.txt



Another	simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 3d8e8186
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=================
ALSA BT87x Driver
=================

Intro
=====

You might have noticed that the bt878 grabber cards have actually
_two_ PCI functions:
*two* PCI functions:
::

  $ lspci
  [ ... ]
@@ -12,7 +17,7 @@ $ lspci

The first does video, it is backward compatible to the bt848.  The second
does audio.  snd-bt87x is a driver for the second function.  It's a sound
driver which can be used for recording sound (and _only_ recording, no
driver which can be used for recording sound (and *only* recording, no
playback).  As most TV cards come with a short cable which can be plugged
into your sound card's line-in you probably don't need this driver if all
you want to do is just watching TV...
@@ -30,9 +35,9 @@ The driver is now stable. However, it doesn't know about many TV cards,
and it refuses to load for cards it doesn't know.

If the driver complains ("Unknown TV card found, the audio driver will
not load"), you can specify the load_all=1 option to force the driver to
not load"), you can specify the ``load_all=1`` option to force the driver to
try to use the audio capture function of your card.  If the frequency of
recorded data is not right, try to specify the digital_rate option with
recorded data is not right, try to specify the ``digital_rate`` option with
other values than the default 32000 (often it's 44100 or 64000).

If you have an unknown card, please mail the ID and board name to
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@@ -12,3 +12,4 @@ Card-Specific Information
   via82xx-mixer
   audiophile-usb
   mixart
   bt87x