872e79add7
This patch adds a generic magnetometer driver for STMicroelectronics magnetometers, currently it supports: LSM303DLHC, LSM303DLM, LIS3MDL. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/*
|
|
* STMicroelectronics magnetometers driver
|
|
*
|
|
* Copyright 2012-2013 STMicroelectronics Inc.
|
|
*
|
|
* Denis Ciocca <denis.ciocca@st.com>
|
|
*
|
|
* Licensed under the GPL-2.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/iio/iio.h>
|
|
#include <linux/iio/trigger.h>
|
|
|
|
#include <linux/iio/common/st_sensors.h>
|
|
#include <linux/iio/common/st_sensors_i2c.h>
|
|
#include "st_magn.h"
|
|
|
|
static int st_magn_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct iio_dev *indio_dev;
|
|
struct st_sensor_data *mdata;
|
|
int err;
|
|
|
|
indio_dev = iio_device_alloc(sizeof(*mdata));
|
|
if (indio_dev == NULL) {
|
|
err = -ENOMEM;
|
|
goto iio_device_alloc_error;
|
|
}
|
|
|
|
mdata = iio_priv(indio_dev);
|
|
mdata->dev = &client->dev;
|
|
|
|
st_sensors_i2c_configure(indio_dev, client, mdata);
|
|
|
|
err = st_magn_common_probe(indio_dev);
|
|
if (err < 0)
|
|
goto st_magn_common_probe_error;
|
|
|
|
return 0;
|
|
|
|
st_magn_common_probe_error:
|
|
iio_device_free(indio_dev);
|
|
iio_device_alloc_error:
|
|
return err;
|
|
}
|
|
|
|
static int st_magn_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
st_magn_common_remove(indio_dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id st_magn_id_table[] = {
|
|
{ LSM303DLHC_MAGN_DEV_NAME },
|
|
{ LSM303DLM_MAGN_DEV_NAME },
|
|
{ LIS3MDL_MAGN_DEV_NAME },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
|
|
|
|
static struct i2c_driver st_magn_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "st-magn-i2c",
|
|
},
|
|
.probe = st_magn_i2c_probe,
|
|
.remove = st_magn_i2c_remove,
|
|
.id_table = st_magn_id_table,
|
|
};
|
|
module_i2c_driver(st_magn_driver);
|
|
|
|
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
|
|
MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
|
|
MODULE_LICENSE("GPL v2");
|