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gnss: add receiver type support

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Add a "type" device attribute and a "GNSS_TYPE" uevent variable which
can be used to determine the type of a GNSS receiver. The currently
identified types reflect the protocol(s) supported by a receiver:

	"NMEA"	NMEA 0183
	"SiRF"	SiRF Binary
	"UBX"	UBX

Note that both SiRF and UBX type receivers typically support a subset of
NMEA 0183 with vendor extensions (e.g. to allow switching to the vendor
protocol).

Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Johan Hovold 2018-06-01 10:22:59 +02:00 • committed by Greg Kroah-Hartman
commit 10f146639f
6 changed files with 77 additions and 0 deletions
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15
Documentation/ABI/testing/sysfs-class-gnss Normal file
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What: /sys/class/gnss/gnssN/type
Date: May 2018
KernelVersion: 4.18
Contact: Johan Hovold <[email protected]>
Description:
The GNSS receiver type. The currently identified types reflect
the protocol(s) supported by the receiver:
"NMEA" NMEA 0183
"SiRF" SiRF Binary
"UBX" UBX
Note that also non-"NMEA" type receivers typically support a
subset of NMEA 0183 with vendor extensions (e.g. to allow
switching to a vendor protocol).