cmipci: have only surround40 on 6 ch card

cmipci: have only surround40 on 6 ch card

[SeNS]

Hello, All!

Sorry for repost; probably, it's a driver problem.

I have 6 channel CMI8738-based card (it works in 6 channel mode under win32; 
and works before under Linux with ALSA).

===============================================
lspci output: "0000:00:0a.0 Multimedia
audio controller: C-Media Electronics Inc CM8738 (rev 10)"
===============================================
my kernel version 2.4.34
alsa version 1.0.15
===============================================
cat /proc/asound/cards
 0 [CMI8738        ]: CMI8738 - C-Media CMI8738
                      C-Media CMI8738 (model 37) at 0xe000, irq 10
===============================================
cat /proc/asound/card0/cmipci

C-Media PCI CMI8738 (model 37) at 0xe000, irq 10

00: 02 00 01 00
04: 10 1c 00 00
08: 03 00 00 01
0c: 00 00 01 00
10: d4 00 00 40
14: 00 00 00 00
18: 00 80 80 08
1c: fa 4c 04 33
20: 10 01 00 00
24: 20 01 ff 00
28: 00 00 00 00
2c: 00 00 00 00
30: ff ff ff ff
34: 00 00 00 00
38: 00 00 00 00
3c: 00 00 00 00
===============================================

WBR, SeNS 

Re: cmipci: have only surround40 on 6 ch card

[Clemens Ladisch]

SeNS wrote:
> I have 6 channel CMI8738-based card (it works in 6 channel mode under win32; 
> and works before under Linux with ALSA).

In what ALSA version did it work?

> cat /proc/asound/card0/cmipci
> C-Media PCI CMI8738 (model 37) at 0xe000, irq 10
> ...
> 08: 03 00 00 01
> 0c: 00 00 01 00

These registers identify the chip as model 37 with four channels.

What model is this?


Regards,
Clemens

Re: cmipci: have only surround40 on 6 ch card

[SeNS]

Hello, Clemens!
You wrote  on Mon, 10 Dec 2007 11:53:42 +0100:

 CL> In what ALSA version did it work?

Unfortunatelly can't remember that :-( Some like 1.0.10RC3 (latest on the 
end of 2006).

 >> cat /proc/asound/card0/cmipci
 >> C-Media PCI CMI8738 (model 37) at 0xe000, irq 10
 >> ...
 >> 08: 03 00 00 01
 >> 0c: 00 00 01 00

 CL> These registers identify the chip as model 37 with four channels.
 CL> What model is this?

It's cheap, noname, made in China card. AFAIR cover box says "6 channel 
multimedia card" or something like that. But it have 3 stereo jacks onboard 
(front, rear, center+LFE) and 100% works with previous ALSA (I use "Test AC3 
v2.0.avi" to be sure)

WBR, SeNS 

Re: cmipci: have only surround40 on 6 ch card

[SeNS]

Hello, Clemens!
You wrote  on Mon, 10 Dec 2007 11:53:42 +0100:

 CL> These registers identify the chip as model 37 with four channels.
 CL> What model is this?

Chip should be this: http://www.cmedia.com.tw/files/doc/PCI/CMI8738_6ch_series_spec_v18f_registers.pdf
Card name (on online purchase order): C-Media CMI 8738 6 Channel PCI Sound 
Card

WBR, SeNS 

Re: cmipci: have only surround40 on 6 ch card

[SeNS]

Hello, Clemens!
You wrote  on Mon, 10 Dec 2007 11:53:42 +0100:

Sorry for double-post.

 CL> What model is this?

This is exact model: http://www.dealsonic.com/cmedcmi86cha1.html

WBR, SeNS

Re: cmipci: have only surround40 on 6 ch card

[Clemens Ladisch]

SeNS wrote:
> You wrote  on Mon, 10 Dec 2007 11:53:42 +0100:
> 
>  CL> These registers identify the chip as model 37 with four channels.
>  CL> What model is this?
> 
> Chip should be this:
> http://www.cmedia.com.tw/files/doc/PCI/CMI8738_6ch_series_spec_v18f_registers.pdf

This is one of the datasheets that were used to write the driver, but
this .pdf is for chip version 55 which is identified by one bit in the
last byte of register 0c being set, which is not the case here:
0c: 00 00 01 00
             ^^

> CL> In what ALSA version did it work?
> 
> Unfortunatelly can't remember that :-( Some like 1.0.10RC3 (latest on the
> end of 2006).

This is strange; the 6ch-detection code hasn't changed in the last five
years.


Regards,
Clemens