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ALSA: doc: ReSTize Bt87x.txt

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

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2016-11-10 16:59:08 +01:00
parent 3d8e81862c
commit 7bb97dfdca
2 changed files with 15 additions and 9 deletions
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23
Documentation/sound/alsa/Bt87x.txt → Documentation/sound/cards/bt87x.rst
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@ -1,18 +1,23 @@
=================
ALSA BT87x Driver
=================
Intro Intro
===== =====
You might have noticed that the bt878 grabber cards have actually You might have noticed that the bt878 grabber cards have actually
_two_ PCI functions: *two* PCI functions:
::
$ lspci $ lspci
[ ... ] [ ... ]
00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02) 00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02)
00:0a.1 Multimedia 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 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 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 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 into your sound card's line-in you probably don't need this driver if all
you want to do is just watching TV... 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. and it refuses to load for cards it doesn't know.
If the driver complains ("Unknown TV card found, the audio driver will 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 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). 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 If you have an unknown card, please mail the ID and board name to

1
Documentation/sound/cards/index.rst
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@ -12,3 +12,4 @@ Card-Specific Information
via82xx-mixer via82xx-mixer
audiophile-usb audiophile-usb
mixart mixart
bt87x