Thread (8 messages) 8 messages, 6 authors, 2009-07-24

Re: [PATCH] USB host CDC Phonet network interface driver

From: Rémi Denis-Courmont <hidden>
Date: 2009-07-24 12:12:39

Possibly related (same subject, not in this thread)

On Friday 24 July 2009 15:01:19 ext Oliver Neukum wrote:
Am Mittwoch, 22. Juli 2009 11:15:34 schrieb Marcel Holtmann:
quoted
quoted
quoted
The AT stuff is really problematic. Look at the hoops ISDN and
software modem drivers go through to emulate AT commands. I know even
of a CDC-ACM modem which can't deal with AT commands inline (that's
within spec). It seems to me we should have a modem API in kernel.
For devices which don't deal in AT commands probably but for devices
whose firmware provides an AT command interface over serial I would
disagree.
I fully agree here. Even if you think you get AT commands under control,
you really won't in the end. That standard is so wildly mis-interpreted
that it is not even funny anymore.
For these devices we could at least separate the data channel from the
control channel.
"These" as in AT devices? You want a line discipline to multiplex AT commands 
inspite of PPP? I wonder if that'd work.

-- 
Rémi Denis-Courmont
Nokia Devices R&D, Maemo Software, Helsinki
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