Re: VIA8233/8235 testers wanted

Re: VIA8233/8235 testers wanted

[Anton Worshevsky]

Hello ,

>  if someone has VIA8233, VIA8233A, VIA8233C or VIA8235 chipset, could
>  you help the testing of the new driver?
>  the new driver code is found at
>
>         http://www.alsa-project.org/~iwai/via82xx.c

i has VIA8235 and ALC650 codec. After installing new driver from cvs from
20030113, there is following problem:

In 5.1-channel dvd playback with xine using surround51 device,
i has swapped Rear and Center/lfe channels.
RL <-> Center, RR <-> LFE
i fixed this with following patch for via82xx.c

812,813c812,815
<       case 5: slots = (1<<0) | (2<<4) | (5<<8) | (3<<12) | (4<<16); break;
<       case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); break;
---
> //    case 5: slots = (1<<0) | (2<<4) | (5<<8) | (3<<12) | (4<<16); break;
> //    case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); break;
>       case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
>       case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;

please note that 5ch mode is untested.
I'm not sure that it is alsa problem, xine' may be.
It will be nice to have a small prog for channel position testing in different
playback modes, because now i know no 5.1ch source other then video player.
In general multichannel playback has good quality now (with rc6 sound was
cracking).

>  the new driver can (hopefully) play multiple streams simultaneously on
>  VIA8233, VIA8233C and VIA8235, but NOT on VIA8233A.

It's worked, but second stream plays only left channel.

Almost all OSS application such as games (UT, tux-racer and other) now producing
cracking and skipping sound. Only XMMS OSS-plugin plays good. OSS-sound was good
with rc6.

Best regards,

Anton Worshevsky




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Re: Re: VIA8233/8235 testers wanted

[Takashi Iwai]

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Hi,

At Wed, 15 Jan 2003 00:48:46 +0300,
Anton Worshevsky wrote:
> 
> Hello ,
> 
> >  if someone has VIA8233, VIA8233A, VIA8233C or VIA8235 chipset, could
> >  you help the testing of the new driver?
> >  the new driver code is found at
> >
> >         http://www.alsa-project.org/~iwai/via82xx.c
> 
> i has VIA8235 and ALC650 codec. After installing new driver from cvs from
> 20030113, there is following problem:
> 
> In 5.1-channel dvd playback with xine using surround51 device,
> i has swapped Rear and Center/lfe channels.
> RL <-> Center, RR <-> LFE
> i fixed this with following patch for via82xx.c
> 
> 812,813c812,815
> <       case 5: slots = (1<<0) | (2<<4) | (5<<8) | (3<<12) | (4<<16); break;
> <       case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); break;
> ---
> > //    case 5: slots = (1<<0) | (2<<4) | (5<<8) | (3<<12) | (4<<16); break;
> > //    case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); break;
> >       case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
> >       case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
> 
> please note that 5ch mode is untested.
> I'm not sure that it is alsa problem, xine' may be.

hmm, it could be due to the setting of ALC650.  how is the status of
"Exchange Center/LFE" mixer switch?


> It will be nice to have a small prog for channel position testing in different
> playback modes, because now i know no 5.1ch source other then video player.
> In general multichannel playback has good quality now (with rc6 sound was
> cracking).
> 
> >  the new driver can (hopefully) play multiple streams simultaneously on
> >  VIA8233, VIA8233C and VIA8235, but NOT on VIA8233A.
> 
> It's worked, but second stream plays only left channel.
> 
> Almost all OSS application such as games (UT, tux-racer and other) now producing
> cracking and skipping sound. Only XMMS OSS-plugin plays good. OSS-sound was good
> with rc6.

does the patch below change something?


ciao,

Takashi

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Index: alsa-kernel/pci/via82xx.c
===================================================================
RCS file: /suse/tiwai/cvs/alsa/alsa-kernel/pci/via82xx.c,v
retrieving revision 1.17
diff -u -r1.17 via82xx.c
--- alsa-kernel/pci/via82xx.c	13 Jan 2003 09:07:53 -0000	1.17
+++ alsa-kernel/pci/via82xx.c	16 Jan 2003 09:19:57 -0000
@@ -773,7 +773,8 @@
 	outb(0 , VIAREG(chip, PLAYBACK_VOLUME_R));
 	outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 	     (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
-	     (0xffff * runtime->rate)/(48000/16) | /* rate */
+	     // (0xffff * runtime->rate)/(48000/16) | /* rate */
+	     0xfffff |
 	     0xff000000,    /* STOP index is never reached */
 	     port + VIA_REG_OFFSET_STOP_IDX);
 	return 0;