Re: question : crash between kernel i2c and alsa i2c

[Tomko <tomko@avantwave.com>]

Takashi Iwai wrote:

>At Mon, 13 Jun 2005 17:48:32 +0800,
>Tomko wrote:
>  
>
>>Hi everyone,
>>
>>I know that there is a tiny i2c subsystem inside alsa , i would like to 
>>know is there any control betwen the kernel i2c subsystem and the alsa 
>>i2c ?  Will there any crashes if two i2c access the bus togethre ?
>>    
>>
>
>No, they have no relevence between them at all.
>If you try to access the same hardware, of course it would be a
>problem.  But ALSA's i2c usually accesses only the chip-connection in
>the sound card, which is quite unlikely accessed from kernel i2c.
>
>  
>
No, what i mean is what if they are accessing different device ? for 
example kernel access it's own i2c device but alsa access it's i2c audio 
device , but there is only ONE pair of i2c bus in hardware, just like 
when the alsa's i2c just initiate a "START" and throw out the hardware 
address but kernel's i2c want to initiate a "START" also and throw out 
another hardware address . How's this situation be avoided if there is 
no control between two i2c subsystem?

TOM

>Takashi
>  
>



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