Commit 1ca2cfbc authored Aug 22, 2022 by Dmitry Rokosov Committed by Jonathan Cameron Aug 30, 2022

iio: add MEMSensing MSA311 3-axis accelerometer driver

MSA311 is a tri-axial, low-g accelerometer with I2C digital output for
sensitivity consumer applications. It has dynamic user-selectable full
scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements
with output data rates from 1Hz to 1000Hz.

This driver supports following MSA311 features:
    - IIO interface
    - Different power modes: NORMAL and SUSPEND (using pm_runtime)
    - ODR (Output Data Rate) selection
    - Scale and samp_freq selection
    - IIO triggered buffer, IIO reg access
    - NEW_DATA interrupt + trigger

Below features to be done:
    - Motion Events: ACTIVE, TAP, ORIENT, FREEFALL
    - Low Power mode

Datasheet: https://cdn-shop.adafruit.com/product-files/5309/MSA311-V1.1-ENG.pdf


Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220822175011.2886-4-ddrokosov@sberdevices.ru


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent 49059493

MAINTAINERS

+6 −0

Original line number	Diff line number	Diff line
		@@ -13176,6 +13176,12 @@ F: drivers/mtd/
		F: include/linux/mtd/
		F: include/uapi/mtd/

		MEMSENSING MICROSYSTEMS MSA311 DRIVER
		M: Dmitry Rokosov <ddrokosov@sberdevices.ru>
		L: linux-iio@vger.kernel.org
		S: Maintained
		F: drivers/iio/accel/msa311.c

		MEN A21 WATCHDOG DRIVER
		M: Johannes Thumshirn <morbidrsa@gmail.com>
		L: linux-watchdog@vger.kernel.org

drivers/iio/accel/Kconfig

+13 −0

Original line number	Diff line number	Diff line
		@@ -541,6 +541,19 @@ config MMA9553
		To compile this driver as a module, choose M here: the module
		will be called mma9553.

		config MSA311
		tristate "MEMSensing Digital 3-Axis Accelerometer Driver"
		depends on I2C
		select IIO_BUFFER
		select IIO_TRIGGERED_BUFFER
		select REGMAP_I2C
		help
		Say yes here to build support for the MEMSensing MSA311
		accelerometer driver.

		To compile this driver as a module, choose M here: the module will be
		called msa311.

		config MXC4005
		tristate "Memsic MXC4005XC 3-Axis Accelerometer Driver"
		depends on I2C

drivers/iio/accel/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -58,6 +58,8 @@ obj-$(CONFIG_MMA9551_CORE) += mma9551_core.o
		obj-$(CONFIG_MMA9551) += mma9551.o
		obj-$(CONFIG_MMA9553) += mma9553.o

		obj-$(CONFIG_MSA311) += msa311.o

		obj-$(CONFIG_MXC4005) += mxc4005.o
		obj-$(CONFIG_MXC6255) += mxc6255.o

drivers/iio/accel/msa311.c

0 → 100644

+1321 −0

File added.

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