* VIA VT8237
@ 2004-06-02 20:48 Gert Vervoort
2004-06-02 23:06 ` Anthony Dominic Truong
0 siblings, 1 reply; 4+ messages in thread
From: Gert Vervoort @ 2004-06-02 20:48 UTC (permalink / raw)
To: alsa-devel
The following patch adds a reference to the VIA VT8237 southbridge:
--- via82xx.c.orig 2004-06-02 22:09:04.509536136 +0200
+++ via82xx.c 2004-06-02 22:40:35.773020384 +0200
@@ -136,6 +136,7 @@
#define VIA_REV_8233 0x30 /* 2 rec, 4 pb, 1 multi-pb, spdif */
#define VIA_REV_8233A 0x40 /* 1 rec, 1 multi-pb, spdf */
#define VIA_REV_8235 0x50 /* 2 rec, 4 pb, 1 multi-pb, spdif */
+#define VIA_REV_8237 0x60 /* 2 rec, 4 pb, 1 multi-pb, spdif */
/*
* Direct registers
@@ -2070,6 +2071,7 @@
{ VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
{ VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
{ VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
+ { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
};
/*
When playing back 6 channel audio on this card, it looks like the rear
left/right and center/LFE are switched.
Gert
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: VIA VT8237
2004-06-02 20:48 VIA VT8237 Gert Vervoort
@ 2004-06-02 23:06 ` Anthony Dominic Truong
2004-06-04 5:45 ` R CHAN
0 siblings, 1 reply; 4+ messages in thread
From: Anthony Dominic Truong @ 2004-06-02 23:06 UTC (permalink / raw)
To: Gert Vervoort; +Cc: alsa-devel
This is a new feature in this new AC97 controller. 3D Channel SGD
Control Register (offset 0x41) is used to turn this on or off. Writing
a 1 to bit 4 of this register enables the swapping of center and LFE
playbacks (slots 3,4,7,8,9,6). Clearing this bit keeps the order
(3,4,7,8,6,9).
This is a bit of info I got from VIA after struggling with this swapping
for nearly a week. :-(
Regards,
Anthony Dominic Truong.
On Wed, 2004-06-02 at 13:48, Gert Vervoort wrote:
> The following patch adds a reference to the VIA VT8237 southbridge:
>
> --- via82xx.c.orig 2004-06-02 22:09:04.509536136 +0200
> +++ via82xx.c 2004-06-02 22:40:35.773020384 +0200
> @@ -136,6 +136,7 @@
> #define VIA_REV_8233 0x30 /* 2 rec, 4 pb, 1 multi-pb, spdif */
> #define VIA_REV_8233A 0x40 /* 1 rec, 1 multi-pb, spdf */
> #define VIA_REV_8235 0x50 /* 2 rec, 4 pb, 1 multi-pb, spdif */
> +#define VIA_REV_8237 0x60 /* 2 rec, 4 pb, 1 multi-pb, spdif */
>
> /*
> * Direct registers
> @@ -2070,6 +2071,7 @@
> { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
> { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
> { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
> + { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
> };
>
> /*
>
> When playing back 6 channel audio on this card, it looks like the rear
> left/right and center/LFE are switched.
>
> Gert
>
>
>
> -------------------------------------------------------
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> _______________________________________________
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> Alsa-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/alsa-devel
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: VIA VT8237
2004-06-02 23:06 ` Anthony Dominic Truong
@ 2004-06-04 5:45 ` R CHAN
0 siblings, 0 replies; 4+ messages in thread
From: R CHAN @ 2004-06-04 5:45 UTC (permalink / raw)
To: Anthony.Truong; +Cc: Gert Vervoort, alsa-devel
I think Gert is referring to Rear L/R switched with Center/LFE
rather than Center<->LFE; indeed I have encountered exactly the
same problem myself.
[The windows test setup program allows Center<->LFE to be adjusted
but outputs Rear L/R "correctly"; I'm not sure why Alsa has got
it the other way round - maybe I need 3,4,6,9,7,8]?
Anthony Dominic Truong wrote:
> This is a new feature in this new AC97 controller. 3D Channel SGD
> Control Register (offset 0x41) is used to turn this on or off. Writing
> a 1 to bit 4 of this register enables the swapping of center and LFE
> playbacks (slots 3,4,7,8,9,6). Clearing this bit keeps the order
> (3,4,7,8,6,9).
> This is a bit of info I got from VIA after struggling with this swapping
> for nearly a week. :-(
>
> Regards,
> Anthony Dominic Truong.
>
>
> On Wed, 2004-06-02 at 13:48, Gert Vervoort wrote:
>
>>The following patch adds a reference to the VIA VT8237 southbridge:
>>
>>--- via82xx.c.orig 2004-06-02 22:09:04.509536136 +0200
>>+++ via82xx.c 2004-06-02 22:40:35.773020384 +0200
>>@@ -136,6 +136,7 @@
>> #define VIA_REV_8233 0x30 /* 2 rec, 4 pb, 1 multi-pb, spdif */
>> #define VIA_REV_8233A 0x40 /* 1 rec, 1 multi-pb, spdf */
>> #define VIA_REV_8235 0x50 /* 2 rec, 4 pb, 1 multi-pb, spdif */
>>+#define VIA_REV_8237 0x60 /* 2 rec, 4 pb, 1 multi-pb, spdif */
>>
>> /*
>> * Direct registers
>>@@ -2070,6 +2071,7 @@
>> { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
>> { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
>> { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
>>+ { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
>> };
>>
>> /*
>>
>>When playing back 6 channel audio on this card, it looks like the rear
>>left/right and center/LFE are switched.
>>
>>Gert
>>
>>
>>
>>-------------------------------------------------------
>>This SF.Net email is sponsored by the new InstallShield X.
>>>From Windows to Linux, servers to mobile, InstallShield X is the one
>>installation-authoring solution that does it all. Learn more and
>>evaluate today! http://www.installshield.com/Dev2Dev/0504
>>_______________________________________________
>>Alsa-devel mailing list
>>Alsa-devel@lists.sourceforge.net
>>https://lists.sourceforge.net/lists/listinfo/alsa-devel
>>
>
>
>
>
>
> Disclaimer: The information contained in this transmission, including any
> attachments, may contain confidential information of Matsushita Avionics
> Systems Corporation. This transmission is intended only for the use of the
> addressee(s) listed above. Unauthorized review, dissemination or other use
> of the information contained in this transmission is strictly prohibited.
> If you have received this transmission in error or have reason to believe
> you are not authorized to receive it, please notify the sender by return
> email and promptly delete the transmission
>
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by the new InstallShield X.
>>From Windows to Linux, servers to mobile, InstallShield X is the one
> installation-authoring solution that does it all. Learn more and
> evaluate today! http://www.installshield.com/Dev2Dev/0504
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/alsa-devel
>
-------------------------------------------------------
This SF.Net email is sponsored by the new InstallShield X.
>From Windows to Linux, servers to mobile, InstallShield X is the one
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: VIA VT8237
@ 2004-06-04 6:03 gert.vervoort
0 siblings, 0 replies; 4+ messages in thread
From: gert.vervoort @ 2004-06-04 6:03 UTC (permalink / raw)
To: rspchan; +Cc: alsa-devel
[-- Attachment #1: Type: text/plain, Size: 444 bytes --]
> I think Gert is referring to Rear L/R switched with Center/LFE
> rather than Center<->LFE; indeed I have encountered exactly the
> same problem myself.
Yes, this is the problem
>
> [The windows test setup program allows Center<->LFE to be adjusted
> but outputs Rear L/R "correctly"; I'm not sure why Alsa has got
> it the other way round - maybe I need 3,4,6,9,7,8]?
>
Also on my system in Windows XP it works correctly.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2004-06-04 6:03 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2004-06-02 20:48 VIA VT8237 Gert Vervoort
2004-06-02 23:06 ` Anthony Dominic Truong
2004-06-04 5:45 ` R CHAN
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2004-06-04 6:03 gert.vervoort
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