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authorClemens Ladisch <clemens@ladisch.de>2007-08-22 09:45:03 +0200
committerJaroslav Kysela <perex@perex.cz>2007-10-16 15:59:22 +0200
commit45c41b4868c9dbec5d43a4023e77994afa94470f (patch)
treecdf019b41ae2462d5dc63dcf65d879890c9208b5 /Documentation/sound
parentc2b1239a9f22f19c53543b460b24507d0e21ea0c (diff)
[ALSA] cmipci: fix handling of FM/MIDI port addresses
Make sure that the MPU-401 MIDI and OPL-3 FM devices are used only on those chips where they are supported, and that the correct port addresses are used. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'Documentation/sound')
-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt12
-rw-r--r--Documentation/sound/alsa/CMIPCI.txt10
2 files changed, 14 insertions, 8 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 3df33ea8bae6..85b40057716d 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -365,13 +365,15 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module snd-cmipci
-----------------
- Module for C-Media CMI8338 and 8738 PCI sound cards.
+ Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
- mpu_port - 0x300,0x310,0x320,0x330 = legacy port,
- 1 = integrated PCI port,
+ mpu_port - port address of MIDI interface:
+ 0x300,0x310,0x320,0x330 = legacy port,
+ 1 = integrated PCI port (8738 or later),
0 = disable (default)
- fm_port - 0x388 = legacy port,
- 1 = integrated PCI port (default),
+ fm_port - port address of OPL-3 FM synthesizer (8x38 only):
+ 0x388 = legacy port,
+ 1 = integrated PCI port (default on 8738),
0 = disable
soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
(default = 1)
diff --git a/Documentation/sound/alsa/CMIPCI.txt b/Documentation/sound/alsa/CMIPCI.txt
index 4b2b15387056..664be46566b8 100644
--- a/Documentation/sound/alsa/CMIPCI.txt
+++ b/Documentation/sound/alsa/CMIPCI.txt
@@ -1,5 +1,5 @@
- Brief Notes on C-Media 8738/8338 Driver
- =======================================
+ Brief Notes on C-Media 8338/8738/8768/8770 Driver
+ =================================================
Takashi Iwai <tiwai@suse.de>
@@ -212,7 +212,9 @@ MIDI CONTROLLER
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.
+Choose the value which doesn't conflict with other cards. With
+CMI8738 and newer chips, you can use "mpu_port=1" to use a PCI port
+address that does not conflict with any other card.
There is _no_ hardware wavetable function on this chip (except for
OPL3 synth below).
@@ -230,6 +232,8 @@ Set "fm_port" module option for more cards.
The output quality of FM OPL/3 is, however, very weird.
I don't know why..
+CMI8768 and newer chips do not have the FM synth.
+
Joystick and Modem
------------------