usb:serial:optrion: fix dwm-158 3g modem interface

Quoted 25 lines · Lars Melin

Quoted 23 lines · Dan Williams

Quoted 4 lines

MI_00 D-Link Mobile Broadband Device (cdc_ether) MI_02 D-Link HSPA+DataCard Diagnostics Interface (also ppp m MI_03 D-Link HSPA+DataCard NMEA Device
MI_04 D-Link HSPA+DataCard Speech Port

Any idea what format this port speaks? Some Huawei Qualcomm-based devices still use a TTY driver but send/receive 16-bit 8000hz PCM audio
frames via a serial port. If the D-Link does something similar, it may
still make sense to drive it via option.

Quoted 1 line

MI_05 D-Link HSPA+DataCard Debug Port

If it's FCCID KA2WM158B1 then it's a Qualcomm device, and this port may
be a DIAG port. It should also be driven by option if that's the case.

I looked but couldn't find downloadable drivers for the DWM-158 so I
couldn't double-check myself.

Quoted 5 lines

Quoted 1 line

Dan

This is a DWM-158D1 or maybe they have versioned it E1, it is Mediatek
based.

Fair enough, then it certainly won't have DM/DIAG.