[2.6.0-test6] Troubles with ALSA via82xx

[2.6.0-test6] Troubles with ALSA via82xx

[Kronos]

Hi,

I have trouble with linux-2.6.0-test6 and via82xx. With default
parameters I'm unable to play sound. I've tracked down the problem to
this change:

   - use dxs_support=3 (48k fixed) as default, since there are so many
     problems with dxs_support=0.

Loading module I see this:

via82xx: Assuming DXS channels with 48k fixed sample rate.
         Please try dxs_support=1 option and report if it works on your machine.
PCI: Setting latency timer of device 0000:00:11.5 to 64
         
and when I try to play anything the player locks and I see the
following messages:

ALSA sound/core/pcm_lib.c:2156: playback write error (DMA or IRQ trouble?)
ALSA sound/core/pcm_lib.c:2156: playback write error (DMA or IRQ trouble?)
ALSA sound/core/pcm_lib.c:2156: playback write error (DMA or IRQ trouble?)

dxs_support=1 doesn't help since I  have a VT8233A. dxs_support=2 is ok.
Looking at  the code I see  that VT8233A (without dsx)  and VT8233 (with
dsx) are selected  using dxs_support parameter. Is this the  only way to
do it? 2.6.0-t5 worked for me, not sure  that this is a bug but at least
it's a regression.

This is my audio device:

00:11.5 Class 0401: 1106:3059 (rev 40)
        Subsystem: 1695:3004
        Flags: medium devsel, IRQ 5
        I/O ports at e000 [size=256]
        Capabilities: [c0] Power Management version 2
                                

Luca
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Re: [2.6.0-test6] Troubles with ALSA via82xx

[Takashi Iwai]

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At Mon, 29 Sep 2003 19:04:37 +0200,
Kronos wrote:
> 
> Hi,
> 
> I have trouble with linux-2.6.0-test6 and via82xx. With default
> parameters I'm unable to play sound. I've tracked down the problem to
> this change:
> 
>    - use dxs_support=3 (48k fixed) as default, since there are so many
>      problems with dxs_support=0.
> 
> Loading module I see this:
> 
> via82xx: Assuming DXS channels with 48k fixed sample rate.
>          Please try dxs_support=1 option and report if it works on your machine.
> PCI: Setting latency timer of device 0000:00:11.5 to 64

please try the attached patch?

--
Takashi Iwai <tiwai dot suse.de>		ALSA Developer - www.alsa-project.org

[-- Attachment #2: via8233a-fix.dif --]
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diff -u -r1.60 via82xx.c
--- linux/sound/pci/via82xx.c	22 Sep 2003 10:10:29 -0000	1.60
+++ linux/sound/pci/via82xx.c	30 Sep 2003 10:02:13 -0000
@@ -2038,16 +2038,17 @@
 				break;
 			}
 		}
-		if (dxs_support[dev] == VIA_DXS_AUTO)
-			dxs_support[dev] = check_dxs_list(pci);
-		/* force to use VIA8233 or 8233A model according to
-		 * dxs_support module option
-		 */
-		if (dxs_support[dev] == VIA_DXS_DISABLE)
-			chip_type = TYPE_VIA8233A;
-		else
-			chip_type = TYPE_VIA8233;
-
+		if (chip_type != TYPE_VIA8233A) {
+			if (dxs_support[dev] == VIA_DXS_AUTO)
+				dxs_support[dev] = check_dxs_list(pci);
+			/* force to use VIA8233 or 8233A model according to
+			 * dxs_support module option
+			 */
+			if (dxs_support[dev] == VIA_DXS_DISABLE)
+				chip_type = TYPE_VIA8233A;
+			else
+				chip_type = TYPE_VIA8233;
+		}
 		if (chip_type == TYPE_VIA8233A)
 			strcpy(card->driver, "VIA8233A");
 		else

Re: [2.6.0-test6] Troubles with ALSA via82xx

[Kronos]

Nell'articolo <s5hhe2ubner.wl@alsa2.suse.de> hai scritto:
>At Mon, 29 Sep 2003 19:04:37 +0200,
>Kronos wrote:
>> 
>> Hi,
>> 
>> I have trouble with linux-2.6.0-test6 and via82xx. With default
>> parameters I'm unable to play sound. I've tracked down the problem to
>> this change:
>> 
>>    - use dxs_support=3 (48k fixed) as default, since there are so many
>>      problems with dxs_support=0.
>> 
>> Loading module I see this:
>> 
>> via82xx: Assuming DXS channels with 48k fixed sample rate.
>>          Please try dxs_support=1 option and report if it works on your machine.
>> PCI: Setting latency timer of device 0000:00:11.5 to 64
>
>please try the attached patch?
>
>diff -u -r1.60 via82xx.c
>--- linux/sound/pci/via82xx.c	22 Sep 2003 10:10:29 -0000	1.60
>+++ linux/sound/pci/via82xx.c	30 Sep 2003 10:02:13 -0000
>@@ -2038,16 +2038,17 @@
>				break;
> 			}
> 		}
>-		if (dxs_support[dev] == VIA_DXS_AUTO)
>-			dxs_support[dev] = check_dxs_list(pci);
>-		/* force to use VIA8233 or 8233A model according to
>-		 * dxs_support module option
>-		 */
>-		if (dxs_support[dev] == VIA_DXS_DISABLE)
>-			chip_type = TYPE_VIA8233A;
>-		else
>-			chip_type = TYPE_VIA8233;
>-
>+		if (chip_type != TYPE_VIA8233A) {
>+			if (dxs_support[dev] == VIA_DXS_AUTO)
>+				dxs_support[dev] = check_dxs_list(pci);
>+			/* force to use VIA8233 or 8233A model according to
>+			 * dxs_support module option
>+			 */
>+			if (dxs_support[dev] == VIA_DXS_DISABLE)
>+				chip_type = TYPE_VIA8233A;
>+			else
>+				chip_type = TYPE_VIA8233;
>+		}
> 		if (chip_type == TYPE_VIA8233A)
> 			strcpy(card->driver, "VIA8233A");
> 		else
>

Great, now it works! Thank you.

Luca
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