ls /dev/snd/ should show up both pcmCxDxP/C sort of pcm devices and also
Controlx sort of control devices, for you to do an amixer upon it.
alsa_aplay -L here I suppose shows only pcm devices you have ?
On Mon, Jun 7, 2010 at 2:52 PM, pramod <pramodkum...@gmail.com> wrote:
> Hi All,
>
> I am currently writing the asound.conf file for my hardware Sigma
> 8654.
> The alsa utils are working fine and detecting the card.
>
> # alsa_aplay -L
> default:CARD=EM8XXX
> EM8xxx card, EM8xxx
> Default Audio Device
> null
> Discard all samples (playback) or generate zero samples (capture)
> #
> # alsa_aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: EM8XXX [EM8xxx card], device 0: em8xxx [EM8xxx]
> Subdevices: 2/2
> Subdevice #0: subdevice #0
> Subdevice #1: subdevice #1
>
> Using the alsa_amixer i am able to get the below output.
>
> # alsa_amixer contents
> numid=1,iface=MIXER,name='Hardware Master Playback Volume'
> ; type=INTEGER,access=rw------,values=2,min=0,max=73,step=0
> : values=49,49
> numid=3,iface=MIXER,name='IEC958 Playback Con Mask'
> ; type=IEC958,access=r-------,values=1
> : values=[AES0=0xff AES1=0xff AES2=0xff AES3=0xff]
> numid=4,iface=MIXER,name='IEC958 Playback Switch'
> ; type=BOOLEAN,access=rw------,values=1
> : values=on
> numid=5,iface=MIXER,name='Decoder Weight'
> ; type=INTEGER,access=rw------,values=2,min=0,max=73,step=0
> : values=0,0
> numid=2,iface=PCM,name='IEC958 Playback Default'
> ; type=IEC958,access=rw------,values=1
> : values=[AES0=0x00 AES1=0x00 AES2=0x00 AES3=0x00]
>
> Looking at the above values i have written below configuration.
>
> pcm.AndroidPlayback {
> type hooks
> slave.pcm {
> type hw
> card 0
> device 0
> }
> hooks.0 {
> type ctl_elems
> hook_args [
> {
> name 'Hardware Master Playback Volume'
> value.0 49
> value.1 49
> }
> {
> name 'IEC958 Playback Default'
> value [ 0x00 0x00 0x00 0x00 ]
> }
> {
> name 'IEC958 Playback Con Mask'
> value [ 0xff 0xff 0xff 0xff ]
> }
> {
> name 'IEC958 Playback Switch'
> value true
> }
> {
> name 'Decoder Weight'
> value.0 0
> value.1 0
> }
>
> ]
> }
> }
>
> But i am getting still the below errors while booting android.
>
> E/ALSALib ( 1332): external/alsa-lib/src/control/control.c:909:
> (snd_ctl_open_noupdate) Invalid CTL AndroidOut
> E/AudioHardwareALSA( 1332): Unable to attach mixer to device
> AndroidOut: No such file or directory
> E/AudioHardwareALSA( 1332): Unable to attach mixer to device default:
> No such file or directory
> E/ALSALib ( 1332): external/alsa-lib/src/control/control.c:909:
> (snd_ctl_open_noupdate) Invalid CTL AndroidIn
> E/AudioHardwareALSA( 1332): Unable to attach mixer to device
> AndroidIn: No such file or directory
> E/AudioHardwareALSA( 1332): Unable to attach mixer to device default:
> No such file or directory
>
> Please provide some directions for solving the above issue.
> Thanks in advance.
> Pramod
>
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>
--
--Pavan Savoy
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