Now I have got all alsa9 utilites on the system and the driver does something.
I can see for example PCM (2 channels) and PCM 1 (2 channels) in alsamixer.
I can also record like: arecord -c 4 -t raw -f S16_LE aaa.raw
and I get:
od -i aaa.raw | more
0000000 -10 -6 0 0 1 3 0 0
0000020 -8 -8 0 0 -7 -7 0 0
0000040 -7 -6 0 0 -6 -2 0 0
0000060 -10 -9 0 0 -9 -8 0 0
But here is a problem - I would expect to see some noise in both codecs - I
have configured and unmuted them BOTH to max volume.
In fact I have tried also -c 3 and -c 5 and always only the first 2 channels
are non-zero.
arecord -l
card 0: card0 [Cirrus Logic CS4281], device 0: CS4281 [CS4281]
Subdevices: 1/1
Subdevice #0: subdevice #0
How can I record data from the secondary codec?
BTW. I have done:
--- cs4281.c-takashi-2 Sat May 25 23:02:01 2002
+++ cs4281.c Sat May 25 23:04:35 2002
@@ -61,7 +61,7 @@
MODULE_PARM_DESC(snd_enable, "Enable CS4281 soundcard.");
MODULE_PARM_SYNTAX(snd_enable, SNDRV_ENABLE_DESC);
MODULE_PARM(snd_dual_codec, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
-MODULE_PARM_DESC(snd_dual_codec, "Enable Dual Codec.");
+MODULE_PARM_DESC(snd_dual_codec, "Enable Dual Codec. (put ID(1-3) here)");
MODULE_PARM_SYNTAX(snd_dual_codec, SNDRV_BOOLEAN_FALSE_DESC);
/*
@@ -1449,7 +1449,7 @@
/*
* Set the serial port timing configuration.
*/
- snd_cs4281_pokeBA0(chip, BA0_SERMC, BA0_SERMC_TCID(1) | BA0_SERMC_PTC_AC97 |
BA0_SERMC_MSPE);
+ snd_cs4281_pokeBA0(chip, BA0_SERMC, BA0_SERMC_TCID(chip->dual_codec) |
+BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE);
/*
* Start the DLL Clock logic.
I believe this is a nice way to give the actual codec ID (0 is always the
primary codec).
Best regards,
--
Tomasz Motylewski
BFAD GmbH & Co. KG
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