Like UMTS vs. GSM, EVDO and 1x are separate networks and technologies
and have separate registration state. You can even be roaming on
EVDO while in your home 1x network. Handle that.
Two hacks here:
1) rfcomm ports don't have an easily accessible driver name, so we just
match the parent's subsystem to 'bluetooth' and use that
2) libgudev doesn't seem be be able to get the rfcomm device's device file,
which would normally be /dev/rfcommX. Oh well, we don't use the device file
yet anyway
Previously, a few operations (like disable) could trigger a modem
flash in parallel with another flash. That's wrong, don't allow
that. At the same time, add in finer-grained error checking on
serial port speed operations, and fix a GSM generic bug that would
send the POWER_UP string on disable.
So many modems just don't implement carrier detect that it makes
the previous 'connected' logic useless, so base it off connect/disconnect
and fix up a few places that didn't check connect status before
trying to send commands. Also ensure the serial port is unlocked
for PPP to use when connected.
ZTE modems need to use udev rules to assign port type hints,
so generalize that and port all the plugins over to suggested
port types in the MMModem interface's grab_port() function.
Allow plugins to perform asynchronous port detection, and to defer port detection
until later. This moves the prober bits into MMPluginBase so that all plugins
can take adavantage of it only when needed; the probing is not done at udev time.
Furthermore, plugins like Novatel can flip the secondary ports over the AT mode
through deferred detection, by deferring the secondary ports until the main port
has been detected and AT$NWDMAT has been sent.
This commit also finishes the port of the rest of the plugins (except mbm) over
to the new port detection methods and plugin API.
Get rid of dependency on HAL, using libgudev instead. Fix up the plugin API
to no longer use either HAL or udev defines, but let plugins use whatever
mechanism they want for getting more information out of the device given the
subsystem and device node name.
Modems are now defined as "master" devices which "own" a one or more ports.
A port could be a serial tty device or a network device or whatever. The
plugin figures out whether it supports a given port or not and then assigns
it to a new or existing modem. Modems now have a 'valid' property that
should be set to TRUE when the modem has enough ports to operate correctly.
For devices (ex. 'hso') that use a network device for data transfer, the
modem would need to grab at least one TTY and the network device associated
with that physical device to be 'valid'.
Also move the generic modem support code to a plugin like other modem plugins,
and change the I-support-this-device mechanism to return a number indicating
the level of support. For example, the generic plugin would return a quite
low number if the device indicates via probing that it can do GSM or CDMA, but
a more specific plugin can indicate better support for the device, and thus
the more specific plugin would win control.
