Sound on DM3730

Hi,

Just thinking about it would it be that I need to run this command in filesystem of Gingerbread $HOME/rowboat-android/

as variscite use different TPS than TI's original

Regards

Ali

Hi Ali,

Are you working with android filesystem ?

If yes, then "audio" utilities could be different for android than linux.

Were you getting any error while you execute "alsactl –f asound.state restore" ?

I'm not aware this utility on android.

May be we have to cross compile with android filesystem.

If I'm not in your track, could you please redirect to correct path.

Also, please elaborate a bit on your requirement/problem.

Hi Titus,

Right, This is what I have.

We use Variscite SOM which is based on TI's "TI-Android-GingerBread-2.3.4-DevKit-2.1" I downloaded the source code for Gingerbread from TI's guide and then started working on it and modifying to work with our custom board.

I went to variscite to find oout why the build using their kernel does not make the sound work. I was told that the SOM uses different TPS than TI's and there is asound.state file against which I need to run the command.

alsactl –f asound.state restore

The asound.state file is supplied by variscite.

To answer your questions, Yes I am using Android File system and Kernel version 2.6.37

I did get this debug when applying command above "No state is present for card AudioPCI"

What I am doing is cross compiling the filesystem after running the above utility. The file system is being built at the moment so once done will post something.

Regards

Ali

Hi Ali,

Could you please share your complete bootup log to check how the audio get initialized.

alsactl -f /etc/asound.state store

alsactl -f /etc/asound.state restore

Try "aplay -l" to list the audio hardwares detected.

Hi Titus,

I have created the file system again on the Host Machine using below

ali@ubuntu:~/rowboat-android$ alsactl -f asound.state restore
ali@ubuntu:~/rowboat-android$ make TARGET_PRODUCT=omap3evm clean
ali@ubuntu:~/rowboat-android$ make TARGET_PRODUCT=omap3evm OMAPES=5.x -j2

There is no audio.

In the filesystem on my SD card I don't have the folder /etc/asound.state

Also the asound.state file is not anywhere on the filesystem (SD Card) created following TI guide from here

http://processors.wiki.ti.com/index.php/TI-Android-GingerBread-2.3.4-DevKit-2.1_DeveloperGuide#Create_root_filesystem_tarball

So I am not sure how I can apply those two commands you mentioned above.

The complete bootlog is attached here

8863.capture.txt

Regards

Ali

Hi Ali,

ali@ubuntu:~/rowboat-android$ alsactl -f asound.state restore
ali@ubuntu:~/rowboat-android$ make TARGET_PRODUCT=omap3evm clean
ali@ubuntu:~/rowboat-android$ make TARGET_PRODUCT=omap3evm OMAPES=5.x -j2

You are executing the "alsactl' command in host machine and not in target (android s/m)

[    4.003295] asoc: twl4030-hifi <-> omap-mcbsp-dai.1 mapping ok
[    4.015106] ALSA device list:
[    4.019470]   #0: omap3evm

The kernel logs seems to be the audio driver get initialized successfully.

How about "aplay -l" o/p log from android s/m ?

Hi Titus,

How can I apply it on target.

Is it at the u-boot command prompt.

Regards

Ali

Hi Titus,

I have got terminal going on Android but constantly getting permission denied message

Regards

Ali

Hi Ali,

Is it at the u-boot command prompt.

Every command should be executed at android terminal (bash or simple "#").

I have got terminal going on Android but constantly getting permission denied message

Try to give "chmod 777 < your android rootfs dir from SD card : rootfs partition >" at host machine.

Hi Titus,

I have changed permissions to chmod 777 /media/rootfs and still getting the permission denied message.

The command line also begins with $ sign, It was $ previously as well and not #

Regards

Ali

Hi Titus,

Update:

I had to use -R option with chmod and works now but I get error saying alsactl not found

Regards

Ali

Hi Ali,

Had you tried "aplay <media-file-name>.wav " to play wav file on android ?

Generally, For android fs, "tinymix" ctrl has been used for audio testing.

Use "tinyplay" command to play any audio file on android and "tinycap" for capture the audio through mic.

tinyplay <media-file-name>.wav -n 16

tinycap <capture-file-name>.wav -n 16

Hi Titus,

Just an update on the issue.

I had to use chmod 777 -R /media/rootfs for permissions.

The command not found was due to PATH variable not being included.

so I set the export PATH=/system/bin:$PATH

Now the commands are little different

alsactl -> alsa_ctl

aplay -> alsa_aplay

On using the alsa_aplay -l I get the message

"aplay: device_list:217: no soundcard found..."

On using alsa_ctl -f asound.state restore I get messge

"alsa_ctl: load_state:1608: no soundcard found"

With tinyplay and tinycap I get message not found

Regards

Ali

Hi Titus,

Any idea's or suggestion on this. I have tried your suggestions above but to no avail. The audio codec device used on SOM is TPS65930.

Regards

Ali

Hi Ali,

Sorry for the delayed responses.

From your kernel logs, the sound card should detect.

Have you tried linux OS on this board or only Linux ?

I will check for android and let me update.

Hi Titus,

Thanks for the reply. I have been trying various things in the last few days to see whats wrong but nothing seems to help me at all.

Yes you are right the kernel log does show that everything should just work. I have not got any further to where I was few days ago. I have also attached the detailed logfile again with more debug.

To answer your question about Linux OS, I have not tried that. I cannot do that at the moment purely due to company prospective as I have to use android plus the x-loader, u-boot and kernel are downloaded from TI site so I think that should just be a good starting point.

I have found few things to which the results are.

In my /proc/asound/ I have list of following folders

omap3evm
card0
pcm
timers
hwdep
cards
devices
version

cat /proc/asound/version
Linux Version 2.6.37-00009-g77a1ac7-dirty (ali@ubuntu) (gcc version 4.4.3 (GCC))#8 Wed Aug 27 08:10:30 PTD 2014

cat /proc/asound/devices
0:[0]      : control
16:[0 -0] : digital audio playback
24:[0 -0] : digital audio capture
33:      : timers

cat /proc/asoound/cards
0 [omap3evm] - omap3evm
               omap3evm

cat /proc/asoound/hwdep
This gives nothing

cat /proc/asound/pcm
00-00: TWL4030 twl4030-hifi-0 : : playback 1 : capture 1

cat /proc/asound/card0/id
omap3evm

cat /proc/asound/card0/pcm0c/info

card: 0
device: 0
subdevice: 0
stream: CAPTURE
id: TWL4030 twl4030-hifi-0
name:
subname: subdevice #0
class: 0
subclass: 0
subdevice_count: 1
subdevice_avail: 1

cat /proc/asound/card0/pcm0p/info

card: 0
device: 0
subdevice: 0
stream: PLAYBACK
id: TWL4030 twl4030-hifi-0
name:
subname: subdevice #0
class: 0
subclass: 0
subdevice_count: 1
subdevice_avail: 1



cat /proc/asound/omap3evm/id
omap3evm

cat /proc/asound/omap3evm/pcm0c/info

card: 0
device: 0
subdevice: 0
stream: CAPTURE
id: TWL4030 twl4030-hifi-0
name:
subname: subdevice #0
class: 0
subclass: 0
subdevice_count: 1
subdevice_avail: 1

cat /proc/asound/omap3evm/pcm0p/info

card: 0
device: 0
subdevice: 0
stream: PLAYBACK
id: TWL4030 twl4030-hifi-0
name:
subname: subdevice #0
class: 0
subclass: 0
subdevice_count: 1
subdevice_avail: 1

All this suggests that everything is fine i think.

ls in home directory on Android does not show etc folder hence there is no /etc/asound.state

The alsa.conf file can be found in /system/usr/share/alsa/alsa.conf

Yet when i use 'alsa_ctl -f /sbin/asound.state restore' I get error 'no soundcard found...' as stated above.

The same results when i use alsa_aplay -l & alsa_amixer command.

I think if I can show something in the list of alsa_aplay -l then the problem would be solved as soundcard would be present and I can play with mixer settings to get it to work

That is all I have got for now

On some of the commands I get permission denied error for example

when I do 'logcat -v time -f /mnt/sdcard/logcat.txt' I get error permission denied. When i use 'su logcat -v time -f /mnt/sdcard/logcat.txt' i get error "su:uid 10012 not allowed to su"

Any help would be great

Regards

Ali

4135.Bootlog.txt

Hi Titus,

I am not sure about this but just noticed in debug logs that

pop wq checking: HiFi Playback status: inactive waiting: yes

I wonder if the codec is switched off.

Regards

Ali

Hi Titus,

Do you have nay more suggestions on this. What I can see from logs is that soc_codec_close gets called. I am not sure who calls it, but it then closed the PCM substream. which I think is the reason for no audio. I am just trying to find out under what conditions this gets called to backtrack things. Would you give some advice on soc_codec_close.

Regards

Ali

Hi Ali,

Sorry for the delayed response.

I'm trying to reproduce the problem on linux.

Still, I'm working on it and will get back to you.

Hi Titus,

Thanks for that. I'm waiting in the mean time I'll try from my end to find something.

Regards

Ali

Hi Titus,

I have just got a little further now and this is what is happening. The soc_codec_close is fine. The reason that is called is because there is no sound being played.

I then placed alot of or_deg statements in soc-core to find out what is going on. This was identified.

Once sound is played, the following debug gets printed.

[   10.566253] snd_soc_update_bits
[   10.573059] soc_pcm_hw_free
[   10.579254] soc_pcm_hw_free
[   10.583374] soc_codec_close
[   14.359497] warning: `zygote' uses 32-bit capabilities (legacy support in use)
[   16.486572] er.ServerThread (1184): /proc/1171/oom_adj is deprecated, please use /proc/1171/oom_score_adj instead.
[   16.808959] snd_soc_update_bits
[   60.476379] soc_pcm_open ----------------------------------------> .mp3 file played at this point
[   60.481048] snd_soc_set_runtime_hwparams
[   60.486755] soc_pcm_apply_symmetry
[   60.493469] asoc: twl4030-hifi <-> omap-mcbsp-dai.1 info:
[   60.500915] asoc: rate mask 0x4fe
[   60.506164] asoc: min ch 2 max ch 4
[   60.512268] asoc: min rate 8000 max rate 96000
[   60.519805] soc_pcm_hw_params
[   60.524108] snd_soc_dai_set_fmt
[   60.528808] snd_soc_dai_set_fmt
[   60.533660] snd_soc_dai_set_sysclk
[   60.538665] mcbsp_data->bus_id 1
[   60.544036] dma_data->name Audio Playback
[   60.549468] soc_pcm_prepare
[   60.554473] snd_soc_dai_digital_mute
[   60.559906] soc_pcm_trigger
[   60.566131] mcbsp_data->bus_id 1, stream subdevice #0

When i use the alsa_amixer to find the info about the card following happens

alsa_amixer -D 0 info        ----> error snd_ctl_open_noupdata invalid CTL 0

alsa_amixer -D omap3evm info --------------> error snd_ctl_open_noupdata invalid CTL omap3evm

Regards

Ali

Do the device nodes in /dev/snd/ exist? What are their permissions?

I dont have anything in /dev/snd/

Its an empty folder.

There is no asound.conf present in rootfs nor asound.state.

The logcat looks like this.

++++++++++++++++++++++++++++++++++++++++++++

8055.logcat.txt

All the devices listed in /proc/asound/devices should have a device node in /dev/snd/.

In kernels that have been compiled with CONFIG_SND_DYNAMIC_MINORS, these nodes must be created by udev.

However, as far as I know, Android disables that option and requires static device nodes.
Have a look at the snddevices script to see which device nodes you need to create.
(Or just run it as "snddevices --dev-dir=/tmp/dev", and copy the needed device nodes to your device's FS.)

Hi Ali,

I agree Clemens's point.

I'm able to reproduce your problem when I disabled the init scripts which would create device nodes under /dev, /sys, /proc etc.,

I'm also suspecting that your init.rc file might have miss something related to audio snd deice nodes.

I think i lied there. When I looked at the rootfs on ubuntu there was nothing in /dev/snd/

I started adb shell session on target and this is what I have now.

ls /dev --->0728.ls_dev.txt

ls /dev/snd/ ----> 6866.ls_dev_snd.txt

It seems like they are listed.

cat /proc/asound/devices
  0: [ 0]   : control
 16: [ 0- 0]: digital audio playback
 24: [ 0- 0]: digital audio capture
 33:        : timer

My init.rc looks like this ----> 2500.init.rc.txt

Show the output of "ls -l /dev/snd/".

Clemens,

This is what I have got for "ls -l /dev/snd/".

crw-rw---- system   audio    116,  33 2011-03-27 03:56 timer
crw-rw---- system   audio    116,   0 2011-03-27 03:56 controlC0
crw-rw---- system   audio    116,  24 2011-03-27 03:56 pcmC0D0c
crw-rw---- system   audio    116,  16 2011-03-27 03:56 pcmC0D0p

These look correct.

As what user are you trying to access these? Is this user member of the audio group?

Just an update,

I was using terminal emulator before but now using adb so things are getting better i guess.

I was going to use alsa_ctl -f asound.state restore but this time I did not get a error saying no sound card found...

I have a different error which says

alsa_ctl: parse:1621: Unable to open file '/system/usr/share/alsa/init/00main': No such file or directory

The directory tree looks like this

# ls /system/usr/share/alsa/
cards
pcm
alsa.conf
# alsa_ctl init
alsa_ctl: parse:1621: Unable to open file '/system/usr/share/alsa/init/00main': No such file or directory
# ls /system/usr/share/alsa/cards/
aliases.conf
# ls /system/usr/share/alsa/pcm/
front.conf
dsnoop.conf
surround50.conf
iec958.conf
side.conf
surround51.conf
surround40.conf
dmix.conf
default.conf
rear.conf
surround41.conf
modem.conf
dpl.conf
center_lfe.conf
surround71.conf

I am not sure about the user number there. How will I find this out.

Hi Titus,

I lose my mixer settings every time I reboot. I can not see any asound.conf file nor asound.state file in /etc/

Infact the /etc directory is not created at all. Can you please advise on that

Thanks

Hi Ali,

I'm glad that you were able to fix it.

I lose my mixer settings every time I reboot. I can not see any asound.conf file nor asound.state file in /etc/

You can add these commands into any one of runlevel scripts which you use current runlevel or init.rc

Hi Titus,

I am a little confused on this not sure whats going on, when the android is running on the target and when I do

adb shell

ls now retunrs etc directory

# ls
d
data
wl1271bt_enable
proc
cache
sys
init
init.rc
sdcard
acct
system
default.prop
debug
config
initlogo.rle.bak
etc
dev
ueventd.rc
ueventd.goldfish.rc
lost+found
part-3
init.goldfish.rc
sbin
mnt
# cd etc
# ls
wifi
ppp
hosts
permissions
security
vold.fstab
dbus.conf
init.goldfish.sh
firmware
apns-conf.xml
NOTICE.html.gz
bluetooth
event-log-tags
dhcpcd

When I connect the SD card to PC and view there is no etc directory.

Hi Ali,

Attach your complete bootup log.

Hi Titus,

Here is the serial log file 2465.capture.txt

Here is the adb logcat file 6175.logcat.txt

Hi Ali,

Try to create one test.txt file after boot and then connect that SD card into PC and check whether that test.txt file is there or not.

If not available, it means the android mounted at different location.

Your log seems to be you are mounting rootfs on SD card 2nd partition.

So, do you have any eMMC interface on your board ?

Hi Titus,

I have created the test.txt file from adb and it is present when SD card connected to PC. The android is mounted on SD card.

Also I do not have eMMC interface on the board.

Regards

Hi Titus,

I was just about to create the script and was wondering, I'll be able to do that manually but how can I make this part of rootfs that when built it is there by default.

Regards

Hi Titus,

Solved the audio both process work. Shell script and code base. Thanks for all your help and also clemens.

Regards

Ali

Hi Ali,

Sounds good.

Thanks for your update.