Conexant softmodem and snd-intel8x0m

Conexant softmodem and snd-intel8x0m

[Theodoros V. Kalamatianos]

Hi,

I own a Dell Latitude D800 laptop with a Centrino chipset and a Conexant 
modem chip, which I have seen refered to as a CXT22 in some logs. The pcm 
part of the modem is properly recognised by the snd-intel8x0m ALSA module, 
but I am unable to tell the modem to go off-hook, as the related mixer 
control does not seem to do anything. Has anyone had any success with ALSA 
and these modems ? How can I help to add support for them to ALSA ?


Regards,

Theodoros Kalamatianos


PS: Oh, the modem works with the Linuxant hsfmodem driver, but it has 
some problems and the speed is limited to 14.4kbps, since I use the free 
vesion. I'd really like to move to a more open driver...


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Re: Conexant softmodem and snd-intel8x0m

[Sasha Khapyorsky]

On 01:41 Thu 24 Nov     , Theodoros V. Kalamatianos wrote:
> 
> I own a Dell Latitude D800 laptop with a Centrino chipset and a Conexant 
> modem chip, which I have seen refered to as a CXT22 in some logs. The pcm 
> part of the modem is properly recognised by the snd-intel8x0m ALSA module, 
> but I am unable to tell the modem to go off-hook, as the related mixer 
> control does not seem to do anything.

This is exactly the problem with this codec (actually with all
unsupported CXT modem codecs).

> Has anyone had any success with ALSA 
> and these modems ?

No, afaik.

> How can I help to add support for them to ALSA ?

If you (as reference hw holder) can find how to hook-off this codec
this may help (I think some works should be done with 0x7a AC97
registers, but not something trivial, it is likely just pipe which pass
data to codec and DAA internal parts).

Also I'm pretty sure that 'hook-off' is only one visible problem there.

Sasha.


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