Hi,
I'm facing some problems while testing a driver
developed for a Hitachi SH4 based board. The board has
an AC97 codec and codec controller.
I'm working as 'root'. The devices are created with
'snddevices' and all modules are loaded properly.
When tried to test the driver by running 'amixer' and
'aplay' but it fails during 'snd_ctl_open_noupdate'
call
in library.
# ./aplay -D hw:0,0
ALSA lib pcm.c:1906:(snd_pcm_open_noupdate) Unknown
PCM hw:0,0
aplay: main:480: audio open error: No such file or
directory
# ./aplay -D Aspen
ALSA lib pcm.c:1906:(snd_pcm_open_noupdate) Unknown
PCM Aspen
aplay: main:480: audio open error: No such file or
directory
# ./amixer
ALSA lib control.c:612:(snd_ctl_open_noupdate) Invalid
CTL default
amixer: Mixer attach default error: No such file or
directory
---------------------
Looks like, both utilities are looking for some config
files. The error happens during the search of some
sound
config files in conf.c file of ALSA lib.
The .asoundrc file is kept at / and /root. The
alsa.conf file is placed in /alsa and /usr/share/alsa
# cat /root/.asoundrc
pcm.Aspen {
type hw
card 0
}
ctl.Aspen {
type hw
card 0
}
#
# ls -l /alsa/
-rwxrwxrwx 1 root audio 7329 Jul 14
2003 alsa.conf
drwxrwxrwx 2 root audio 1024 Jul 15
2003 cards
drwxrwxrwx 2 root audio 1024 Jul 15
2003 pcm
# ls -l /dev/snd
lrwxrwxrwx 1 root root 16 Jun 7
14:48 /dev/snd -> /proc/asound
/dev
# cat /proc/asound/card0/id
Aspen
# cat /proc/asound/devices
1: : sequencer
0: [0- 0]: ctl
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
33: : timer
#
# ls -l /proc/asound/dev/
crw-rw-rw- 1 root root 116, 0 Jun 7
15:43 controlC0
crw-rw-rw- 1 root root 116, 24 Jun 7
15:43 pcmC0D0c
crw-rw-rw- 1 root root 116, 16 Jun 7
14:30 pcmC0D0p
crw-rw-rw- 1 root root 116, 1 Jun 7
15:43 seq
crw-rw-rw- 1 root root 116, 33 Jun 7
15:43 timer
-----------------------
Am I missing any config files or path settings ? Can
somebody please give the info on how & where to setup
the config files for a new driver?
Thanks and regards,
Prince
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