netdev - [PATCH] Add NMEA GPS character device for PCIe MHI Quectel Module to read NMEA statements.

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Message-Id: <R8AFPS.THYVK2DKSEE83@unrealasia.net>
Date: Thu, 02 Jan 2025 02:34:03 +0800
From: Muhammad Nuzaihan <zaihan@...ealasia.net>
To: netdev@...r.kernel.org
Cc: Loic Poulain <loic.poulain@...aro.org>, Sergey Ryazanov
	<ryazanov.s.a@...il.com>, Johannes Berg <johannes@...solutions.net>
Subject: [PATCH] Add NMEA GPS character device for PCIe MHI Quectel Module to
 read NMEA statements.

Hi netdev,

I am using a Quectel RM520N-GL *PCIe* (not USB) module which uses the 
MHI interface.

In /devices/pci0000:00/0000:00:1c.6/0000:08:00.0/mhi0 i can see 
"mhi0_NMEA" but the actual NMEA device is missing in /dev and needs a 
character device to be useful with tty programs.

NMEA statements are a stream of GPS information which is used to tell 
the current device location in the console (like minicom).

Attached is the patch to ensure a device is registered (as 
/dev/wwan0nmea0) so this device will stream GPS NMEA statements and can 
be used to be read by popular GPS tools like gpsd and then tracking 
with cgps, xgps, QGIS, etc.

Regards,
Muhammad Nuzaihan

Signed-off-by: Muhammad Nuzaihan Bin Kamal Luddin 
<zaihan@...ealasia.net>

View attachment "quectel-nmea-gps-port-interface.patch" of type "text/x-patch" (2824 bytes)