[alsa-devel] [Fwd: Re: Davinci ASoC support (patch)]

[lokowich]

Vova Barinov wrote:
> Mark Brown wrote:
>   
>> On Fri, Mar 28, 2008 at 09:27:04AM -0500, lokowich wrote:
>>
>>   
>>     
>>> Forwarded from davinci-linux-open-source list:
>>>     
>>>       
>> CCing in Vladimir Barinov who contributed the DaVinci support.
>>
>>   
>>     
>>> I've built this ASoC patch into my DaVinci git kernel (thanks for the 
>>> SENSORS tip), and can use aplay and speaker-test, but no sound.  Figured 
>>> it may be a mixer/volume control issue, but the alsamixer is unable to 
>>> open for a failed ioctl on USBDEVFS_IOCTL.  Not sure why there is a USB 
>>> dependency.  Noted that there is no /sys/class/sound/mixer in my sysfs.  
>>> Any ideas?
>>>     
>>>       
> How do you figure out that you can play sound?
> Also what platform do you use - is it Davinci-EVM? what line output do 
> you use to hear the sound?
> Please, post your dmesg log and cat /proc/interrupts too.
>   

    Excerpt from dmesg:
    Advanced Linux Sound Architecture Driver Version 1.0.16.
    ASoC version 0.13.2
    AIC3X Audio Codec 0.1
    asoc: aic3x <-> davinci-i2s mapping ok
    ALSA device list:
      #0: DaVinci EVM (aic3x)

    /proc/interrupts:
               CPU0
      6:          0       AINTC  dm644xresizer
      8:      23608       AINTC  davincifb
     13:       6995       AINTC  EMAC
     22:        107       AINTC  ide0
     32:      39436       AINTC  clockevent
     33:          3       AINTC  free-run counter
     39:        217       AINTC  i2c_davinci
     40:        204       AINTC  serial
    Err:          0

    This is the DM6446 EVM.  Note, my kernel has been patched with
    latest ALSA, to no avail.  I hear the  DAC pop during initialization
    on both the Line Out and Headphone jacks.

>> It might be helpful to post dmesg output showing the sound support
>> being loaded
>>   
>>     
>>> Bernard Blackham wrote:
>>>     
>>>       
>>>> Behme wrote:
>>>>   
>>>>       
>>>>         
>>>>> While searching something different, I just found
>>>>>
>>>>> http://www.spinics.net/lists/alsa-devel/msg12535.html
>>>>>
>>>>> As I'm not subscribed to alsa-devel, I don't have the original post. 
>>>>> Maybe any of the authors can post it do this list as well?
>>>>>
>>>>> The patch mainly applies to our git. I fixed two small rejects in 
>>>>> Kconfig and Makefile as the patch is for newer kernel than our git. 
>>>>> Untested patch against our git in attachment. Anybody likes to test?
>>>>>     
>>>>>         
>>>>>           
>>>> Well, I tried compiling it and it failed to build. It appears that it's 
>>>> built on a set of patches for Davinci posted to LAK, including this 
>>>> completely revamped EDMA support[1]:
>>>>
>>>> http://www.spinics.net/lists/arm-kernel/msg47450.html
>>>>       
>>>>         
> Yep, it's needed.
>   
>>>> So I had to change a few definitions, import a few functions from the new
>>>> DMA support and managed to get it compiling and loading, but not yet working
>>>> (tried various sample rates and formats):
>>>>
>>>> root at davinci-dvevm:/tst$ aplay test.wav
>>>> Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
>>>> ALSA lib pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not usable
>>>> aplay: set_params:878: Broken configuration for this PCM: no configurations
>>>> available
>>>>
>>>> root at davinci-dvevm:/tst$ arecord -r 48000 -f S16_LE
>>>> Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
>>>> ALSA lib pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not usable
>>>> arecord: set_params:878: Broken configuration for this PCM: no
>>>> configurations available
>>>>
>>>>
>>>> And this is the extent of my knowledge of ALSA - I can continue digging, but
>>>> maybe somebody else will beat me to it =) It's looking promising though.
>>>>
>>>> Attached is the patch I have so far that applies against current git. This
>>>> is not for going upstream, but just for testing. Notes:
>>>> - Apply patch
>>>> - Enable SND_SOC, SND_DAVINCI_SOC, SND_DAVINCI_SOC_I2S, SND_DAVINCI_SOC_EVM
>>>> and SND_SOC_TLV320AIC3X.
>>>> - Make sure CONFIG_I2C_DAVINCI is enabled, but disable the
>>>> CONFIG_SENSORS_TLV320* options.
>>>> - Build.
>>>> - Load the snd-soc-evm module.
>>>>
>>>> Bernard.
>>>>
>>>> [1] These patches appear to have gone absolutely nowhere beyond that list. I
>>>> can't find them in any tree. But they are cleaner and more conforming to the
>>>> Linux Kernel style than what's currently in git.
>>>>
>>>>   
>>>> ------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
>>>> Davinci-linux-open-source mailing list
>>>> Davinci-linux-open-source at linux.davincidsp.com
>>>> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
>>>>   
>>>>       
>>>>         
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>>>     
>>>       
>>   
>>     
>
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