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iio: imu: Add initial support for Bosch BMI160

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BMI160 is an Inertial Measurement Unit (IMU) which provides acceleration
and angular rate measurement. It also offers a secondary I2C interface
for connecting a magnetometer sensor (usually BMM160).

Current driver offers support for accelerometer and gyroscope readings
via sysfs or via buffer interface using an external trigger (e.g.
hrtimer). Data is retrieved from IMU via I2C or SPI interface.

Datasheet is at:
	http://www.mouser.com/ds/2/783/BST-BMI160-DS000-07-786474.pdf

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Daniel Baluta
2016-04-15 18:06:56 +03:00
committed by Jonathan Cameron
parent ab4b6496a2
commit 77c4ad2d6a
8 changed files with 782 additions and 0 deletions
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63
drivers/iio/imu/bmi160/bmi160_spi.c Normal file
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/*
* BMI160 - Bosch IMU, SPI bits
*
* Copyright (c) 2016, Intel Corporation.
*
* This file is subject to the terms and conditions of version 2 of
* the GNU General Public License. See the file COPYING in the main
* directory of this archive for more details.
*/
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <linux/acpi.h>
#include "bmi160.h"
static int bmi160_spi_probe(struct spi_device *spi)
{
struct regmap *regmap;
const struct spi_device_id *id = spi_get_device_id(spi);
regmap = devm_regmap_init_spi(spi, &bmi160_regmap_config);
if (IS_ERR(regmap)) {
dev_err(&spi->dev, "Failed to register spi regmap %d\n",
(int)PTR_ERR(regmap));
return PTR_ERR(regmap);
}
return bmi160_core_probe(&spi->dev, regmap, id->name, true);
}
static int bmi160_spi_remove(struct spi_device *spi)
{
bmi160_core_remove(&spi->dev);
return 0;
}
static const struct spi_device_id bmi160_spi_id[] = {
{"bmi160", 0},
{}
};
MODULE_DEVICE_TABLE(spi, bmi160_spi_id);
static const struct acpi_device_id bmi160_acpi_match[] = {
{"BMI0160", 0},
{ },
};
MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
static struct spi_driver bmi160_spi_driver = {
.probe = bmi160_spi_probe,
.remove = bmi160_spi_remove,
.id_table = bmi160_spi_id,
.driver = {
.acpi_match_table = ACPI_PTR(bmi160_acpi_match),
.name = "bmi160_spi",
},
};
module_spi_driver(bmi160_spi_driver);
MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com");
MODULE_DESCRIPTION("Bosch BMI160 SPI driver");
MODULE_LICENSE("GPL v2");