Re: Re: Detection of ALC650 rev.E

[James Courtier-Dutton <James@superbug.demon.co.uk>]

Takashi Iwai wrote:
> At Tue, 26 Aug 2003 21:56:38 +0100,
> James Courtier-Dutton wrote:
> 
>>>Can you point me at the code you used to detect it. I have some code 
>>>here that is supposed to detect it, and I just want to compare it with 
>>>your previous code before I bother sending it as a patch.
>>>Cheers
>>>James
>>>
>>>
>>
>>P.S. The code I have depends on the contents of AC97 register 0x6e.
>>Source of this code is: -
>>http://www.realtek.com.tw/downloads/dlac97-2.aspx?lineid=5&famid=12&series=8&Software=True 
>>
>>Then download the Linux driver. It is a version of the alsa kernel 
>>drivers, but with modifications.
>>
>>/* reg = contents of AC97 reg 0x6e */
>>switch(ac97->id & 0xfffffff0) {
>>
>><snip>
>>
>>case 0x414c4720:        // ALC650
>>   if (((reg & 0x3f) > 0) && ((reg & 0x3f) < 3))
>>     ac97->id = 0x414c4720;	// Early version.
>>   else if (((reg & 0x3f) > 2) && ((reg & 0x3f) < 0x10))
>>     ac97->id = 0x414c4721;          // D version
>>   else if ((reg&0x30) == 0x10)
>>     ac97->id = 0x414c4722;          // E version
>>   else if ((reg&0x30) == 0x20)
>>     ac97->id = 0x414c4723;          // F version
>>   break;
> 
> 
> oh, then it's apparently different.
> i checked MULTICH register bits but it didn't work anyway.
> 
> the above looks better (hey where is such a thing described!).
> could you send me a patch?
> 
> 
> Takashi
> 
> 
If you go to the realtek site (url above) and download the linux 
drivers. They are source code, and look like a modified version of 
alsa-driver.
I just extracted the info from the realtek source code.

Cheers
James




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