iio: magnetometer: add ti tmag5273 driver

Add support for TI TMAG5273 Low-Power Linear 3D Hall-Effect Sensor.
Additionally to temperature and magnetic X, Y and Z-axes the angle and
magnitude are reported.
The sensor is operating in continuous measurement mode and changes to sleep
mode if not used for 5 seconds.

Datasheet: https://www.ti.com/lit/gpn/tmag5273Signed-off-by: Gerald Loacker <gerald.loacker@wolfvision.net>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221201072220.402585-4-gerald.loacker@wolfvision.netSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS

@@ -20912,6 +20912,7 @@ M:	Gerald Loacker <gerald.loacker@wolfvision.net>
 L:	linux-iio@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/iio/magnetometer/ti,tmag5273.yaml
+F:	drivers/iio/magnetometer/tmag5273.c
 
 TI TRF7970A NFC DRIVER
 M:	Mark Greer <mgreer@animalcreek.com>

drivers/iio/magnetometer/Kconfig

@@ -208,6 +208,18 @@ config SENSORS_RM3100_SPI
 	  To compile this driver as a module, choose M here: the module
 	  will be called rm3100-spi.
 
+config TI_TMAG5273
+	tristate "TI TMAG5273 Low-Power Linear 3D Hall-Effect Sensor"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say Y here to add support for the TI TMAG5273 Low-Power
+	  Linear 3D Hall-Effect Sensor.
+
+	  This driver can also be compiled as a module.
+	  To compile this driver as a module, choose M here: the module
+	  will be called tmag5273.
+
 config YAMAHA_YAS530
 	tristate "Yamaha YAS530 family of 3-Axis Magnetometers (I2C)"
 	depends on I2C

drivers/iio/magnetometer/Makefile

@@ -29,4 +29,6 @@ obj-$(CONFIG_SENSORS_RM3100)		+= rm3100-core.o
 obj-$(CONFIG_SENSORS_RM3100_I2C)	+= rm3100-i2c.o
 obj-$(CONFIG_SENSORS_RM3100_SPI)	+= rm3100-spi.o
 
+obj-$(CONFIG_TI_TMAG5273)		+= tmag5273.o
+
 obj-$(CONFIG_YAMAHA_YAS530)		+= yamaha-yas530.o