Re: serial connections

[Dan Williams <dcbw redhat com>]

On Mon, 2008-04-28 at 22:57 +0400, Vitja Makarov wrote:
> I looked now at cdc-acm and found that some devices define cdc acm
> proto subclass that could be one of:
> 
> - V25TER (my phone has this)
> - PCCA101
> - PCCA101-WAKE
> - GSM
> - 3G
> - CDMA
> 
> I think this could be added to hal-info to provide device info.
> But my phone is definitely GSM, I don't know anout .V25ter,
> but it seems to be not only GSM modem.
> 
> In case of modem devices that could be possible to use dynamic probing:
> 
> my phone says this:
> < AT+GCAP
> > +GCAP: +CGSM,+DS,+W
> 
> But in case of all other chips such as cp2101, ftdio_sio, cypress_m5 and so on,
> that should be bad idea to probe them. I not very familar with mobile phones,
> but I have a wild guess that they all CDC_ACM modems, and that should be
> very good.
> 
> Btw HAL could get some info based on USB info, and if unsure try to
> probe the device.
> Isn't that a good idea?

Right, there should still probably be .fdi files that specify whether to
probe the port or not.  Or, invert the check and probe everything
_except_ what's listed in the .fdi file.  But probing devices that we
want to know about is the way to go.

Dan