Re: Fixes for identifying VT1617 codec and MSI-7142 mobo

[Philip Prindeville <philipp_subx@redfish-solutions.com>]

Takashi Iwai wrote:

>At Thu, 11 Aug 2005 13:21:56 -0600,
>Philip Prindeville wrote:
>  
>
>>I tried:
>>
>>aplay -v -D spdif /usr/share/system-config-soundcard/sound-sample.wav
>>
>>and that worked ok (I got PCM sound out), but it was at 48kHz.
>>    
>>
>
>Check /proc/asound/card0/pcm0p/sub3/hw_info whether it's really 48k.
>  
>

Yup:

access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 48000 (48000/1)
period_size: 4096
buffer_size: 16384
tick_time: 1000


though I still don't understand why it would be that device and not 
pcm1p/sub0/
instead...

>  
>
>>  So I
>>tried with -D plug:spdif, and that was at the correct pitch...  But I'm
>>confused.  If I'm setting:
>>
>>.action = VIA_DXS_SRC
>>
>>and:
>>
>>ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_CONTINUOUS;
>>
>>shouldn't it be able to playback digitally at arbitrary rates?
>>    
>>
>
>No.  SPDIF cannot play arbitrary rates.
>  
>

But it can play 44100, right?


>>What do  I need
>>to change to get it to playback at 44100Hz for testing?
>>    
>>
>
>It shoud work as it is.  Otherwise it's a bug.
>
>
>Takashi
>  
>

I don't understand why it's device 0, subdevice 3.... instead of being
device 1, subdevice 0.

-Philip



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