From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: Re: Testers of via82xx 5.1 output - report - swapped output still there
Date: Thu, 20 Nov 2003 16:49:09 +0100
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To: Richard Chan <rspchan@starhub.net.sg>
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At Thu, 20 Nov 2003 22:53:16 +0800,
Richard Chan wrote:
> 
> Takashi Iwai wrote:
> 
> >At Thu, 20 Nov 2003 18:29:17 +0800,
> >Richard Chan wrote:
> >  
> >
> >>via82xx with ALC655/8 patch and 1.0.0pre1
> >>
> >>Summary -
> >>Swapped output 2,3==Center/LFE and 4,5==Surround
> >>has not been fixed by the patch.
> >>    
> >>
> >
> >hmm...i'm puzzled.
> >there must be no longer "Swap Surround Slot" control, anyway.
> >can you confirm this?
> >
> >  
> >
> Yes - no more 'Swap Surround Slot'.
> Reverting the slot assignment makes no difference at all:
> I can confirm that the 4 channel assignment is correct - if a use a plug
> with slave.channels 4 I get rear sound.
> 
> If I use a plug with slave.channels 6 the rear is always channel 4 5.
> These lines don't make any difference to 6 channel.
> // case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | 
> (6<<20); break;
> case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); 
> break;

interesting, then your chip doesn't follow the spec written in the
datasheet.  (or, it can be a newer model.)
if this bit switches have no effect, it's difficult to fix on the
driver side.  perhaps the routing on alsa-lib is the only solution...


> /usr/src/linux-2.6.0-test9.2/sound/pci> cat /proc/asound/cards
> 0 [rev60 ]: VIA8233 - VIA 823x rev60
> VIA 823x rev60 at 0xe400, irq 22

i don't know of this revision.  really a new one..?


Takashi


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