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    USB: qcserial: Enable Diagnostics Monitor and GPS ports on Gobi 2000 · 1992de83
    Matthias G. Eckermann 提交于
    this patch to qcserial.c enables the Diagnostics Monitor
    and NMEA GPS ports on Qualcomm Gobi 2000 devices.
    
    A Gobi 2000 device will provide 3 serial ports:
            # /dev/ttyUSB0 -> Diagnostics
            # /dev/ttyUSB1 -> 3G Modem
            # /dev/ttyUSB2 -> NMEA GPS port
    
    * The Diagnostics Monitor uses Qualcomm's DM protocol; I used
      libqcdm (ModemManager) to talk to it, found it working, but at
      least DM commands 12 and 64 are not implemented on my device
      (Gobi 2000 built into Thinkpad x100e).
    
    * Functionality of the 3G Modem port remains unchanged.
    
    * The GPS port and how to enable it has been confirmed now in the
      Gobi 3000 source code at:
    	https://www.codeaurora.org/patches/quic/gobi/
      Enable/disable GPS via:
            echo "\$GPS_START" > /dev/ttyUSB2
            # use GPS
            echo "\$GPS_STOP"  > /dev/ttyUSB2
    Signed-off-by: NMatthias G. Eckermann <mge@arcor.de>
    1992de83
qcserial.c 8.8 KB