2011-06-20 03:31:53     WM8978 codec in alsa driver model

2011-06-20 03:31:53     WM8978 codec in alsa driver model

ThangarJ P (INDIA)

Message: 101469   

Hi All,

we are working in BF527 based custom board and 2010RC1-RC4 distribution.

is it possible to test the WM8978 codec using the alsa driver model?

please find my kernel configuration page below

--- ALSA for SoC audio support                                                              │ │

  │ │                      <*>   SoC I2S Audio for the ADI BF5xx chip                                                  │ │

  │ │                      < >     SoC SSM2602 Audio support for BF52x ezkit                                           │ │

  │ │                      < >     SoC AD73311/AD74111 Audio support for Blackfin                                      │ │

  │ │                      (0)   Select AD73311 or AD74111                                                             │ │

  │ │                      < >   SoC ADAU1361 Audio support                                                            │ │

  │ │                      < >   SoC ADAU1371 Audio support                                                            │ │

  │ │                      < >   SoC ADAU1373 Audio support                                                            │ │

  │ │                      < >   SoC ADAU1381 Audio support                                                            │ │

  │ │                      < >   SoC ADAU1761 Audio support                                                            │ │

  │ │                      < >   SoC ADAV801/3 Audio support                                                           │ │

  │ │                      < >   SoC I2S(TDM mode) Audio for the ADI BF5xx chip                                        │ │

  │ │                      < >   SoC AC97 Audio for the ADI BF5xx chip                                                 │ │

  │ │                      (1)   Set a SPORT for Sound chip                                                            │ │

  │ │                      <*>   Build all ASoC CODEC drivers                                                          │ │

  │ │                                                                                                                  │ │

  │ │                                                            

we are getting the the below information from the kernel boot up message

ALSA device list:

  No soundcards found.

please help me on this issue.

Thank you,

Thangaraj.P

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2011-06-20 07:41:52     Re: WM8978 codec in alsa driver model

Mike Frysinger (UNITED STATES)

Message: 101473   

you have to write your own alsa machine driver to connect the codec up.  you can use the blackfin machine drivers in sound/soc/blackfin/ as examples.

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2011-06-20 09:30:23     Re: WM8978 codec in alsa driver model

ThangarJ P (INDIA)

Message: 101480   

Dear Mike,

Thank you.