where is voice codec driver for dm365?

kevin Guo12526

Hi:

Has anyone here successfully make use of dm365's internal voice codec.

The PSP I am using is linux-2.6.32.17-psp03.01.01.38. I found some patches for the voice codec from this page:
https://patchwork.kernel.org/project/linux-davinci/list/?state=*&q=voice (I got it with a filer "voice")

I am not sure which patch works for that PSP, so I applied this one, which seemed to be the latest and verified:

[5/5] DaVinci: DM365: Voice Codec support for the DM365 EVM
[4/5] DaVinci: DM365: Voice codec support for the DM365 SoC
[v2,3/5] ASoC: DaVinci: CQ93VC Voice Codec
[v2,2/5] ASoC: DaVinci: Voice Codec Interface
[v2,1/5] MFD: DaVinci Voice Codec
[v2,3/5] ASoC: DaVinci: CQ93VC Voice Codec

The kernel was compiled and built with no error, and booted up with voice codec recognized:

Advanced Linux Sound Architecture Driver Version 1.0.21.
No device for DAI tlv320aic3x
asoc: CQ93VC <-> davinci-vcif mapping ok
ALSA device list:
#0: DaVinci DM365 EVM (CQ93VC)

But no sound was heard when I took a simple test:
cat chimes.wav > /dev/audio

Any advice on this issue? Thanks.

Kevin

over 14 years ago

0 kevin Guo12526 over 14 years ago

Intellectual 470 points

Some update:

1. I can confirm from the scope and debug print that the codec was turned on and off when I cat some data to /dev/audio. And the command held for a while, looks like transferring data.

2. I just upgraded ALSA from 1.0.21 to 1.0.23. The changes are pretty the same as the patch I have applied. But that made no difference.

Thanks

Kevin

0 kevin Guo12526 over 14 years ago in reply to kevin Guo12526

Intellectual 470 points

Problem solved.

The reason is that the device driver mutes the codec by default.

Thanks for your attention.

Kevin

0 YJ Liu over 14 years ago in reply to kevin Guo12526

Expert 1675 points

hi , kevin.

it is helpful for us with your experiment. but where is the source file?

Look around TI, they don't want to use the build-in codec, because they want to sell TLV320AIC3x for more money.

0 Arseniy Platonov over 14 years ago in reply to kevin Guo12526

Expert 1555 points

Hi, Kevin.

kevin Guo said:

2. I just upgraded ALSA from 1.0.21 to 1.0.23. The changes are pretty the same as the patch I have applied. But that made no difference.

Please, tell me how to upgrade ALSA from 21 to 23.

PS: Do you have a problem if you do capture audio along with video capture?
I have this problem, I described it here.
http://e2e.ti.com/support/embedded/f/354/p/83687/394793.aspx#394793

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where is voice codec driver for dm365?