EM7565 AT Commands

[Jared Bents]

I am attempting to replace an EM7455 with an EM7565.  I have added the new
USB ID (1199:9091) to qmi_wwan.c and qcserial.c as well as the
bInterfaceNumber (8) to qmi_wwan.c.  The qmicli commands appear to be
working but when I try to use the modem port for AT commands, the port has
no response to any key presses.  I have verified with Sierra Wireless'
Windows Driver that the interface is at least somewhat functional by
sending AT commands to the module and getting responses.  Has anyone
attempted to use the EM7565 yet?  And if so, were you able to get AT
commands working?

Below is some USB interface information that I have gather.  It looks like
the interfaces are being assigned correctly.

EM7455
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=fsl-ehci/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=, Driver=qcserial, 480M
    |__ Port 1: Dev 2, If 2, Class=, Driver=qcserial, 480M
    |__ Port 1: Dev 2, If 3, Class=, Driver=qcserial, 480M
    |__ Port 1: Dev 2, If 8, Class=, Driver=qmi_wwan, 480M
    |__ Port 1: Dev 2, If 10, Class=, Driver=qmi_wwan, 480M

EM7565
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=fsl-ehci/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=, Driver=qcserial, 480M
    |__ Port 1: Dev 2, If 2, Class=, Driver=qcserial, 480M
    |__ Port 1: Dev 2, If 3, Class=, Driver=qcserial, 480M
    |__ Port 1: Dev 2, If 8, Class=, Driver=qmi_wwan, 480M

dmesg printout with debug prints for qcserial.c

EM7455
[  505.942433] usb 2-1: new high-speed USB device number 3 using fsl-ehci
[  506.058709] usb 2-1: config 1 has an invalid interface number: 8 but max
is 4
[  506.058724] usb 2-1: config 1 has an invalid interface number: 10 but
max is 4
[  506.058732] usb 2-1: config 1 has no interface number 1
[  506.058738] usb 2-1: config 1 has no interface number 4
[  506.061174] usb 2-1: Num Interfaces = 5
[  506.061189] usb 2-1: This Interface = 0
[  506.061195] usb 2-1: DM/DIAG interface found
[  506.061948] qcserial 2-1:1.0: Qualcomm USB modem converter detected
[  506.062419] usb 2-1: Qualcomm USB modem converter now attached to ttyUSB0
[  506.062654] usb 2-1: Num Interfaces = 5
[  506.062661] usb 2-1: This Interface = 2
[  506.062667] usb 2-1: NMEA GPS interface found
[  506.063525] qcserial 2-1:1.2: Qualcomm USB modem converter detected
[  506.063966] usb 2-1: Qualcomm USB modem converter now attached to ttyUSB1
[  506.064196] usb 2-1: Num Interfaces = 5
[  506.064203] usb 2-1: This Interface = 3
[  506.064210] usb 2-1: Modem port found
[  506.065587] qcserial 2-1:1.3: Qualcomm USB modem converter detected
[  506.066064] usb 2-1: Qualcomm USB modem converter now attached to ttyUSB2
[  506.067800] qmi_wwan 2-1:1.8: cdc-wdm0: USB WDM device
[  506.069040] qmi_wwan 2-1:1.8 wwan0: register 'qmi_wwan' at
usb-fsl-ehci.1-1, WWAN/QMI device, d6:a3:9c:81:d4:d2
[  506.070176] qmi_wwan 2-1:1.10: cdc-wdm1: USB WDM device
[  506.071021] qmi_wwan 2-1:1.10 wwan1: register 'qmi_wwan' at
usb-fsl-ehci.1-1, WWAN/QMI device, d6:a3:9c:81:d4:d2


EM7565
[  506.724416] usb 1-1: new high-speed USB device number 3 using fsl-ehci
[  506.839185] usb 1-1: config 1 has an invalid interface number: 8 but max
is 3
[  506.839197] usb 1-1: config 1 has no interface number 1
[  506.841210] usb 1-1: Num Interfaces = 4
[  506.841223] usb 1-1: This Interface = 0
[  506.841230] usb 1-1: DM/DIAG interface found
[  506.841587] qcserial 1-1:1.0: Qualcomm USB modem converter detected
[  506.841841] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB3
[  506.842040] usb 1-1: Num Interfaces = 4
[  506.842048] usb 1-1: This Interface = 2
[  506.842054] usb 1-1: NMEA GPS interface found
[  506.842511] qcserial 1-1:1.2: Qualcomm USB modem converter detected
[  506.842733] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB4
[  506.842914] usb 1-1: Num Interfaces = 4
[  506.842921] usb 1-1: This Interface = 3
[  506.842927] usb 1-1: Modem port found
[  506.843218] qcserial 1-1:1.3: Qualcomm USB modem converter detected
[  506.843443] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB5
[  506.844336] qmi_wwan 1-1:1.8: cdc-wdm2: USB WDM device
[  506.844892] qmi_wwan 1-1:1.8 wwan2: register 'qmi_wwan' at
usb-fsl-ehci.0-1, WWAN/QMI device, d6:a3:9c:81:d4:d2


Thank you,
Jared
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