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[ALSA] cmipci: Fix obsolete description 

Documentation
Fixed obsolete description about CMIPCI driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-05-24 10:40:49 +02:00 committed by Jaroslav Kysela
parent e6e514fa82
commit d6e33796b5
1 changed files with 24 additions and 17 deletions
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41
Documentation/sound/alsa/CMIPCI.txt
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@ -89,19 +89,22 @@ and use the interleaved 4 channel data.
There are some control switchs affecting to the speaker connections:
"Line-In As Rear" - As mentioned above, the line-in jack is used
for the rear (3th and 4th channels) output.
"Line-In As Bass" - The line-in jack is used for the bass (5th
and 6th channels) output.
"Mic As Center/LFE" - The mic jack is used for the bass output.
If this switch is on, you cannot use a microphone as a capture
source, of course.
"Line-In Mode" - an enum control to change the behavior of line-in
jack. Either "Line-In", "Rear Output" or "Bass Output" can
be selected. The last item is available only with model 039
or newer.
When "Rear Output" is chosen, the surround channels 3 and 4
are output to line-in jack.
"Mic-In Mode" - an enum control to change the behavior of mic-in
jack. Either "Mic-In" or "Center/LFE Output" can be
selected.
When "Center/LFE Output" is chosen, the center and bass
channels (channels 5 and 6) are output to mic-in jack.
Digital I/O
-----------
The CM8x38 provides the excellent SPDIF capability with very chip
The CM8x38 provides the excellent SPDIF capability with very cheap
price (yes, that's the reason I bought the card :)
The SPDIF playback and capture are done via the third PCM device
@ -122,8 +125,9 @@ respectively, so you cannot playback both analog and digital streams
simultaneously.
To enable SPDIF output, you need to turn on "IEC958 Output Switch"
control via mixer or alsactl. Then you'll see the red light on from
the card so you know that's working obviously :)
control via mixer or alsactl ("IEC958" is the official name of
so-called S/PDIF). Then you'll see the red light on from the card so
you know that's working obviously :)
The SPDIF input is always enabled, so you can hear SPDIF input data
from line-out with "IEC958 In Monitor" switch at any time (see
below).
@ -205,9 +209,10 @@ In addition to the standard SB mixer, CM8x38 provides more functions.
MIDI CONTROLLER
---------------
The MPU401-UART interface is enabled as default only for the first
(CMIPCI) card. You need to set module option "midi_port" properly
for the 2nd (CMIPCI) card.
The MPU401-UART interface is disabled as default. You need to set
module option "mpu_port" with a valid I/O port address to enable the
MIDI support. The valid I/O ports are 0x300, 0x310, 0x320 and 0x330.
Choose the value which doesn't conflict with other cards.
There is _no_ hardware wavetable function on this chip (except for
OPL3 synth below).
@ -229,9 +234,11 @@ I don't know why..
Joystick and Modem
------------------
The joystick and modem should be available by enabling the control
switch "Joystick" and "Modem" respectively. But I myself have never
tested them yet.
The legacy joystick is supported. To enable the joystick support, pass
joystick_port=1 module option. The value 1 means the auto-detection.
If the auto-detection fails, try to pass the exact I/O address.
The modem is enabled dynamically via a card control switch "Modem".
Debugging Information