[alsa-devel] alsa driver playback using aplay fails

Appalayagari Sreedhar sreecha01 at gmail.com
Wed Sep 7 15:22:01 CEST 2011


Hi,

I have integrated the cx2070x codec driver which is in ALSA model.
I am trying to test the codec driver using the aplay command.

in my code CPU is the master and codec is the slave.

The Audio format which i used is :

#define AUDIO_FORMAT (SND_SOC_DAIFMT_I2S | \
                SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_IB_NF)

when i run the aplay command.

aplay Front_Center.wav

the codec driver is opening and shutting down.
please find the log. the CPU is TI processsor.

 davinci_i2s_startup
 davinci_i2s_startup
 snd_soc_set_runtime_hwparams
asoc: cx2070x <-> davinci-mcbsp info:
asoc: rate mask 0x6fe
asoc: min ch 2 max ch 2
asoc: min rate 8000 max rate 96000
Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate
48000 Hz, Mono
 soc_pcm_hw_params
 davinci_i2s_set_dai_fmt
 davinci_i2s_set_dai_fmt
 cx2070x_hw_params
4294941454: cx2070x_hw_params() called
format:2 speed:48000
 davinci_i2s_hw_params
 soc_pcm_prepare
 davinci_i2s_prepare
 davinci_mcbsp_stop
 davinci_mcbsp_stop
 davinci_i2s_prepare
 soc_pcm_trigger
 davinci_i2s_trigger
 davinci_i2s_trigger
 soc_pcm_trigger
 davinci_i2s_trigger
 davinci_mcbsp_stop
 davinci_mcbsp_stop
 davinci_i2s_trigger
 soc_pcm_hw_free
 soc_pcm_hw_free
 soc_codec_close
 davinci_i2s_shutdown
 davinci_mcbsp_stop
 davinci_mcbsp_stop
 davinci_i2s_shutdown
# pop wq checking: Playback status: inactive waiting: yes

Could you please tell me where i am doing wrong?

Thank you,
Sreedhar.


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