Hi Qin Lin, On Sun, 2007-07-29 at 22:40 -0700, Qin Lin wrote: > # insmod ac97_bus.ko > # insmod snd-ac97-codec.ko > # insmod ml403_ac97cr.ko > [ 79.529114] ml403_ac97cr: remap controller memory region to 0xc500e000 > done > [ 79.611803] ml403_ac97cr: request (playback) irq 7 done > [ 79.674236] ml403_ac97cr: request (capture) irq 6 done > [ 79.784291] snd-ml403_ac97cr: write access to codec register 0x26 with > bad value 0x800f / 32783! > [ 79.900247] snd-ml403_ac97cr: write access to codec register 0x26 with > bad value 0xf / 15! > [ 80.004284] snd-ml403_ac97cr: write access to codec register 0x2a with > bad value 0x2801 / 10241! > [ 80.116228] snd-ml403_ac97cr: write access to codec register 0x2a with > bad value 0x3801 / 14337!
Completely fine. > # ls -l /dev/snd > crw-rw-rw- 1 root root 116, 0 Jan 1 00:01 controlC0 > crw-rw-rw- 1 root root 116, 4 Jan 1 00:01 hwC0D0 > crw-rw-rw- 1 root root 116, 5 Jan 1 00:01 hwC0D1 > crw-rw-rw- 1 root root 116, 6 Jan 1 00:01 hwC0D2 > crw-rw-rw- 1 root root 116, 7 Jan 1 00:01 hwC0D3 > crw-rw-rw- 1 root root 116, 24 Jan 1 00:01 pcmC0D0c > crw-rw-rw- 1 root root 116, 16 Jan 1 00:01 pcmC0D0p > crw-rw-rw- 1 root root 116, 1 Jan 1 00:01 seq > crw-rw-rw- 1 root root 116, 33 Jan 1 00:01 timer Ok, should suffice. [In my case snddevices made many other device files.] > # aplay -D /dev/snd/pcmC0D0p > ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM /dev/snd/pcmC0D0p Well, I think the way you specify the device is wrong. AFAIK the -D option only accepts names which are defined in an ALSA configuration file (.asoundrc & friends). Furthermore: Did you try without any device (without -D option)? The defaults should make ALSA pick the first available sound device. At least, while I was testing, I didn't have to specify any device. BTW: You need to specify the (.wav) file you want to play: # aplay music.wav Otherwise you won't here anything ;-). Read "man aplay" ! > # ./test_sound.out /dev/snd/pcmC0D0p > ALSA lib pcm.c:2090:(snd_pcm_open_noupdate) Unknown PCM /dev/snd/pcmC0D0p > cannot open audio device /dev/snd/pcmC0D0p (No such file or directory) Ditto. But I haven't had a look into test_sound source yet, but it might be the same issue. Joachim _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded