kernel_samsung_sm7125/drivers/gnss/Makefile

# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the GNSS subsystem.
#

obj-$(CONFIG_GNSS)			+= gnss.o
gnss-y := core.o

obj-$(CONFIG_GNSS_SERIAL)		+= gnss-serial.o
gnss-serial-y := serial.o

obj-$(CONFIG_GNSS_CMDLINE_SERIAL)	+= gnss-cmdline.o
gnss-cmdline-y := cmdline.o
BACKPORT: gnss: add GNSS receiver subsystem Add a new subsystem for GNSS (e.g. GPS) receivers. While GNSS receivers are typically accessed using a UART interface they often also support other I/O interfaces such as I2C, SPI and USB, while yet other devices use iomem or even some form of remote-processor messaging (rpmsg). The new GNSS subsystem abstracts the underlying interface and provides a new "gnss" class type, which exposes a character-device interface (e.g. /dev/gnss0) to user space. This allows GNSS receivers to have a representation in the Linux device model, something which is important not least for power management purposes. Note that the character-device interface provides raw access to whatever protocol the receiver is (currently) using, such as NMEA 0183, UBX or SiRF Binary. These protocols are expected to be continued to be handled by user space for the time being, even if some hybrid solutions are also conceivable (e.g. to have kernel drivers issue management commands). This will still allow for better platform integration by allowing GNSS devices and their resources (e.g. regulators and enable-gpios) to be described by firmware and managed by kernel drivers rather than platform-specific scripts and services. While the current interface is kept minimal, it could be extended using IOCTLs, sysfs or uevents as needs and proper abstraction levels are identified and determined (e.g. for device and feature identification). Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit 2b6a440351436d792b1960822da4b7d6e673f568) [adelva: adjusted for drivers/Makefile conflict, __poll_t->unsigned int, EPOLL* -> POLL* for 4.14] Bug: 146062677 Change-Id: I5704e952766cd8057fba3be3212091a726e0d85a Signed-off-by: Alistair Delva <adelva@google.com> 7 years ago			`# SPDX-License-Identifier: GPL-2.0`
			`#`
			`# Makefile for the GNSS subsystem.`
			`#`

			`obj-$(CONFIG_GNSS) += gnss.o`
			`gnss-y := core.o`
UPSTREAM: gnss: add generic serial driver Add a generic serial GNSS driver (library) which provides a common implementation for the gnss interface and power management (runtime and system suspend). This allows GNSS drivers for specific chip to be implemented by simply providing a set_power() callback to handle three states: ACTIVE, STANDBY and OFF. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit 37768b054f2074f40de3cacd492baed482f5d9da) Bug: 146062677 Change-Id: I7713c82eea2ce4a6a7956d74dfc964e6d012293c Signed-off-by: Alistair Delva <adelva@google.com> 7 years ago
			`obj-$(CONFIG_GNSS_SERIAL) += gnss-serial.o`
			`gnss-serial-y := serial.o`
ANDROID: gnss: Add command line test driver This driver enables the "takeover" of a serdev bus device by the GNSS subsystem. It can be used to test the GNSS subsystem without needing to write a specific hardware backend. The new module supports the following parameters: gnss_cmdline.serdev=driver/port/serdev gnss_cmdline.type=<protocol number> An example which allows GNSS to wrap a platform serial8250 port and advertise NMEA-0183 data is: gnss_cmdline.serdev=serial8250/serial0/serial0-0 ^ ^ ^ driver port serdev gnss_cmdline.type=0 ^ GNSS_TYPE_NMEA Bug: 146517987 Change-Id: I421386ee4f2ba8f1f0832d9c56a067a600892d3c Signed-off-by: Alistair Delva <adelva@google.com> 5 years ago
			`obj-$(CONFIG_GNSS_CMDLINE_SERIAL) += gnss-cmdline.o`
			`gnss-cmdline-y := cmdline.o`