kernel/linux.git/drivers/gnss/mtk.c, branch linux-5.15.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-5.15.y2019-02-15T15:54:38+00:00gnss: add driver for mediatek receivers2019-02-15T15:54:38+00:00Loys Ollivierlollivier@baylibre.com2019-02-13T15:09:29+00:00urn:sha1:d4584bbfcf2a8f5b6605be9eba465bba59ce68c8
Add driver for serial-connected Mediatek-based GNSS receivers.
These devices typically boot transmitting vendor specific NMEA output
sequences. The serial port bit rate is read from the device tree
"current-speed".
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 mediatek 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 the timepulse-support is left unimplemented.
Signed-off-by: Loys Ollivier <lollivier@baylibre.com>
[ johan: rename backup supply ]
Signed-off-by: Johan Hovold <johan@kernel.org>