kernel/linux.git/drivers/gnss/ubx.c, branch v7.1

gnss: ubx: add support for the safeboot gpio

2025-11-20T15:44:04+00:00

U-Blox M8/M9 chip have a pin to start it in safeboot mode, to be used to recover from situations where the flash content has become corrupted and needs to be restored. If this pin is asserted at power up/reset, the receiver starts in safeboot mode and GNSS operation is disabled. Deassert the safeboot pin when probing this driver. Signed-off-by: Alejandro Enrique Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250911-ubx-safeboot-v3-2-32fe6b882a3c@geotab.com [ johan: deassert after requesting supplies ] Signed-off-by: Johan Hovold

gnss: ubx: add support for the reset gpio

2023-12-15T08:29:54+00:00

The Renesas KingFisher board includes a U-Blox Neo-M8 chip. This chip has a reset pin which is also wired on the board. When Linux starts, reset is asserted by the firmware. Deassert the reset pin when probing this driver. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven [ johan: rename gpio descriptor variable ] Signed-off-by: Johan Hovold

gnss: ubx: use new helper to remove open coded regulator handling

2023-12-15T08:08:56+00:00

v_bckp shall always be enabled as long as the device exists. We now have a regulator helper for that, use it. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Signed-off-by: Johan Hovold

gnss: drop stray semicolons

2021-11-15T07:22:26+00:00

Drop semicolons after function definitions that have managed to sneak in and get reproduced. Signed-off-by: Johan Hovold

gnss: ubx: add u-blox,neo-6m compatible

2019-04-04T10:46:19+00:00

Add compatible for u-blox NEO-6M GPS module. Signed-off-by: Ondrej Jirman Signed-off-by: Johan Hovold

gnss: ubx: make struct ubx_gserial_ops static

2018-07-16T10:48:07+00:00

The structure ubx_gserial_ops is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol 'ubx_gserial_ops' was not declared. Should it be static? Signed-off-by: Colin Ian King Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

gnss: add receiver type support

2018-06-28T11:32:51+00:00

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 Signed-off-by: Greg Kroah-Hartman

gnss: add driver for u-blox receivers

2018-06-28T11:31:32+00:00

Add driver for serial-connected u-blox GNSS receivers. Note that the driver uses the generic GNSS serial implementation and therefore essentially only manages power abstracted into three power states: ACTIVE, STANDBY, and OFF. For u-blox receivers with a main supply and no enable-gpios, this simply means that the main supply is disabled in STANDBY and OFF (the optional backup supply is kept enabled while the driver is bound). Note that timepulse-support is not yet implemented. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman