ALSA: doc: ReSTize Bt87x.txt

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

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 78 deletions

diff --git a/Documentation/sound/alsa/Bt87x.txt b/Documentation/sound/alsa/Bt87x.txt
deleted file mode 100644
index f158cde8b065..000000000000
--- a/Documentation/sound/alsa/Bt87x.txt
+++ /dev/null
@@ -1,78 +0,0 @@
-Intro
-=====
-
-You might have noticed that the bt878 grabber cards have actually
-_two_ PCI functions:
-
-$ lspci
-[ ... ]
-00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02)
-00:0a.1 Multimedia controller: Brooktree Corporation Bt878 (rev 02)
-[ ... ]
-
-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
-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...
-
-Some cards do not bother to connect anything to the audio input pins of
-the chip, and some other cards use the audio function to transport MPEG
-video data, so it's quite possible that audio recording may not work
-with your card.
-
-
-Driver Status
-=============
-
-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
-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
-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
-<alsa-devel@alsa-project.org>, regardless of whether audio capture works
-or not, so that future versions of this driver know about your card.
-
-
-Audio modes
-===========
-
-The chip knows two different modes (digital/analog).  snd-bt87x
-registers two PCM devices, one for each mode.  They cannot be used at
-the same time.
-
-
-Digital audio mode
-==================
-
-The first device (hw:X,0) gives you 16 bit stereo sound.  The sample
-rate depends on the external source which feeds the Bt87x with digital
-sound via I2S interface.
-
-
-Analog audio mode (A/D)
-=======================
-
-The second device (hw:X,1) gives you 8 or 16 bit mono sound.  Supported
-sample rates are between 119466 and 448000 Hz (yes, these numbers are
-that high).  If you've set the CONFIG_SND_BT87X_OVERCLOCK option, the
-maximum sample rate is 1792000 Hz, but audio data becomes unusable
-beyond 896000 Hz on my card.
-
-The chip has three analog inputs.  Consequently you'll get a mixer
-device to control these.
-
-
-Have fun,
-
-  Clemens
-
-
-Written by Clemens Ladisch <clemens@ladisch.de>
-big parts copied from btaudio.txt by Gerd Knorr <kraxel@bytesex.org>