CDMA-capable modems (like a Sierra EM7355) will fail to even enable,
because the internal CDMA code tries to initialize using AT commands and
that fails because many MBIM modems don't have an AT port. We should
figure out how to support minimal MBIM + CDMA using MBIM instead of
AT-anything.
[mm-broadband-modem.c:9000] enabling_step(): Modem has CDMA capabilities, enabling the Modem CDMA interface...
[mm-iface-modem-cdma.c:946] mm_iface_modem_cdma_run_registration_checks(): Running registration checks (CDMA1x: 'yes', EV-DO: 'yes')
[mm-broadband-modem.c:7397] setup_registration_checks_context_complete_and_free(): Will skip all QCDM-based registration checks
[mm-broadband-modem.c:7418] setup_registration_checks_context_complete_and_free(): Will skip generic detailed registration check, we don't have Sprint commands
[mm-iface-modem-cdma.c:768] registration_check_step(): Starting QCDM-based registration checks
[mm-iface-modem-cdma.c:780] registration_check_step(): Skipping all QCDM-based checks and falling back to AT-based checks
[mm-iface-modem-cdma.c:823] registration_check_step(): Starting AT-based registration checks
[mm-iface-modem-cdma.c:641] get_service_status_ready(): Could not get service status: No AT port available to run command
[mm-iface-modem.c:1392] __iface_modem_update_state_internal(): Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabling -> disabled)
This response is already managed by the generic AT serial port and translates
it into a proper error. This change also avoids the Call.Start() call to report
a timeout in the serial port, instead we get a proper no-carrier error.
Before:
$ sudo mmcli -m 0 --voice-create-call="number=12345678"
Successfully created new call:
/org/freedesktop/ModemManager1/Call/1 outgoing (unknown)
$ sudo mmcli -o 1 --start
error: couldn't start the call: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Serial.ResponseTimeout: Serial command timed out'
After:
$ sudo mmcli -m 0 --voice-create-call="number=12345678"
Successfully created new call:
/org/freedesktop/ModemManager1/Call/1 outgoing (unknown)
$ sudo mmcli -o 1 --start
error: couldn't start the call: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Connection.NoCarrier: No carrier'
Dan Williams
Aleksander Morgado
Marco Bascetta
Riccardo Vangelisti