iio: accel: Add driver support for ADXL355

ADXL355 is a 3-axis MEMS Accelerometer. It offers low noise density,
low 0g offset drift, low power with selectable measurement ranges.
It also features programmable high-pass and low-pass filters.

Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/adxl354_adxl355.pdf
Reviewed-by: Alexandru Ardelean <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Puranjay Mohan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>

MAINTAINERS

@@ -598,6 +598,16 @@ W:	http://ez.analog.com/community/linux-device-drivers
 F:	Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
 F:	drivers/input/misc/adxl34x.c
 
+ADXL355 THREE-AXIS DIGITAL ACCELEROMETER DRIVER
+M:	Puranjay Mohan <[email protected]>
+L:	[email protected]
+S:	Supported
+F:	Documentation/devicetree/bindings/iio/accel/adi,adxl355.yaml
+F:	drivers/iio/accel/adxl355.h
+F:	drivers/iio/accel/adxl355_core.c
+F:	drivers/iio/accel/adxl355_i2c.c
+F:	drivers/iio/accel/adxl355_spi.c
+
 ADXL372 THREE-AXIS DIGITAL ACCELEROMETER DRIVER
 M:	Michael Hennerich <[email protected]>
 S:	Supported

drivers/iio/accel/Kconfig

@@ -61,6 +61,35 @@ config ADXL345_SPI
 	  will be called adxl345_spi and you will also get adxl345_core
 	  for the core module.
 
+config ADXL355
+	tristate
+
+config ADXL355_I2C
+	tristate "Analog Devices ADXL355 3-Axis Digital Accelerometer I2C Driver"
+	depends on I2C
+	select ADXL355
+	select REGMAP_I2C
+	help
+	  Say Y here if you want to build i2c support for the Analog Devices
+	  ADXL355 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl355_i2c and you will also get adxl355_core
+	  for the core module.
+
+config ADXL355_SPI
+	tristate "Analog Devices ADXL355 3-Axis Digital Accelerometer SPI Driver"
+	depends on SPI
+	select ADXL355
+	select REGMAP_SPI
+	help
+	  Say Y here if you want to build spi support for the Analog Devices
+	  ADXL355 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl355_spi and you will also get adxl355_core
+	  for the core module.
+
 config ADXL372
 	tristate
 	select IIO_BUFFER

drivers/iio/accel/Makefile

@@ -9,6 +9,9 @@ obj-$(CONFIG_ADIS16209) += adis16209.o
 obj-$(CONFIG_ADXL345) += adxl345_core.o
 obj-$(CONFIG_ADXL345_I2C) += adxl345_i2c.o
 obj-$(CONFIG_ADXL345_SPI) += adxl345_spi.o
+obj-$(CONFIG_ADXL355) += adxl355_core.o
+obj-$(CONFIG_ADXL355_I2C) += adxl355_i2c.o
+obj-$(CONFIG_ADXL355_SPI) += adxl355_spi.o
 obj-$(CONFIG_ADXL372) += adxl372.o
 obj-$(CONFIG_ADXL372_I2C) += adxl372_i2c.o
 obj-$(CONFIG_ADXL372_SPI) += adxl372_spi.o

drivers/iio/accel/adxl355.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * ADXL355 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2021 Puranjay Mohan <[email protected]>
+ */
+
+#ifndef _ADXL355_H_
+#define _ADXL355_H_
+
+#include <linux/regmap.h>
+
+struct device;
+
+extern const struct regmap_access_table adxl355_readable_regs_tbl;
+extern const struct regmap_access_table adxl355_writeable_regs_tbl;
+
+int adxl355_core_probe(struct device *dev, struct regmap *regmap,
+		       const char *name);
+
+#endif /* _ADXL355_H_ */