tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iio: adxl372: Add support for I2C communication
The adxl372 is designed to communicate in either SPI or I2C protocol. It
autodetects the format being used, requiring no configuration control to
select the format.
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by
Stefan Popa
and committed by
Jonathan Cameron
94dbb46c
d9e8fd04
+76
-1
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MAINTAINERS
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MAINTAINERS
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drivers/iio/accel/Kconfig
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drivers/iio/accel/Kconfig
···
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To compile this driver as a module, choose M here: the
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module will be called adxl372_spi.
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config ADXL372_I2C
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tristate "Analog Devices ADXL372 3-Axis Accelerometer I2C Driver"
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depends on I2C
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select ADXL372
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select REGMAP_I2C
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help
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Say yes here to add support for the Analog Devices ADXL372 triaxial
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acceleration sensor.
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To compile this driver as a module, choose M here: the
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module will be called adxl372_i2c.
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config BMA180
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tristate "Bosch BMA180/BMA250 3-Axis Accelerometer Driver"
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depends on I2C
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drivers/iio/accel/Makefile
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drivers/iio/accel/Makefile
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obj-$(CONFIG_ADXL345_I2C) += adxl345_i2c.o
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obj-$(CONFIG_ADXL345_SPI) += adxl345_spi.o
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obj-$(CONFIG_ADXL372) += adxl372.o
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obj-$(CONFIG_ADXL372_I2C) += adxl372_i2c.o
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obj-$(CONFIG_ADXL372_SPI) += adxl372_spi.o
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obj-$(CONFIG_BMA180) += bma180.o
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obj-$(CONFIG_BMA220) += bma220_spi.o
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drivers/iio/accel/adxl372.c
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drivers/iio/accel/adxl372.c
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drivers/iio/accel/adxl372.h
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drivers/iio/accel/adxl372.h
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drivers/iio/accel/adxl372_i2c.c
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drivers/iio/accel/adxl372_i2c.c
···
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* ADXL372 3-Axis Digital Accelerometer I2C driver
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*
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* Copyright 2018 Analog Devices Inc.
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*/
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include "adxl372.h"
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static const struct regmap_config adxl372_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.readable_noinc_reg = adxl372_readable_noinc_reg,
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};
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static int adxl372_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct regmap *regmap;
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unsigned int regval;
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int ret;
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regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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ret = regmap_read(regmap, ADXL372_REVID, ®val);
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if (ret < 0)
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return ret;
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/* Starting with the 3rd revision an I2C chip bug was fixed */
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if (regval < 3)
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dev_warn(&client->dev,
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"I2C might not work properly with other devices on the bus");
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return adxl372_probe(&client->dev, regmap, client->irq, id->name);
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}
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static const struct i2c_device_id adxl372_i2c_id[] = {
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{ "adxl372", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id);
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static struct i2c_driver adxl372_i2c_driver = {
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.driver = {
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.name = "adxl372_i2c",
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},
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.probe = adxl372_i2c_probe,
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.id_table = adxl372_i2c_id,
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};
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module_i2c_driver(adxl372_i2c_driver);
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MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
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MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver");
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MODULE_LICENSE("GPL");