linux/drivers/iio/magnetometer/st_magn_i2c.c
Andy Shevchenko ecb27c5e43 iio: st_sensors: Make use of device properties
Device property API allows to gather device resources from different sources,
such as ACPI. Convert the drivers to unleash the power of device property API.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-01-13 21:53:39 +00:00

122 lines
2.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* STMicroelectronics magnetometers driver
*
* Copyright 2012-2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/common/st_sensors.h>
#include <linux/iio/common/st_sensors_i2c.h>
#include "st_magn.h"
static const struct of_device_id st_magn_of_match[] = {
{
.compatible = "st,lsm303dlh-magn",
.data = LSM303DLH_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm303dlhc-magn",
.data = LSM303DLHC_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm303dlm-magn",
.data = LSM303DLM_MAGN_DEV_NAME,
},
{
.compatible = "st,lis3mdl-magn",
.data = LIS3MDL_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm303agr-magn",
.data = LSM303AGR_MAGN_DEV_NAME,
},
{
.compatible = "st,lis2mdl",
.data = LIS2MDL_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm9ds1-magn",
.data = LSM9DS1_MAGN_DEV_NAME,
},
{},
};
MODULE_DEVICE_TABLE(of, st_magn_of_match);
static int st_magn_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
const struct st_sensor_settings *settings;
struct st_sensor_data *mdata;
struct iio_dev *indio_dev;
int err;
st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
settings = st_magn_get_settings(client->name);
if (!settings) {
dev_err(&client->dev, "device name %s not recognized.\n",
client->name);
return -ENODEV;
}
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
if (!indio_dev)
return -ENOMEM;
mdata = iio_priv(indio_dev);
mdata->sensor_settings = (struct st_sensor_settings *)settings;
err = st_sensors_i2c_configure(indio_dev, client);
if (err < 0)
return err;
err = st_magn_common_probe(indio_dev);
if (err < 0)
return err;
return 0;
}
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[] = {
{ LSM303DLH_MAGN_DEV_NAME },
{ LSM303DLHC_MAGN_DEV_NAME },
{ LSM303DLM_MAGN_DEV_NAME },
{ LIS3MDL_MAGN_DEV_NAME },
{ LSM303AGR_MAGN_DEV_NAME },
{ LIS2MDL_MAGN_DEV_NAME },
{ LSM9DS1_MAGN_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
static struct i2c_driver st_magn_driver = {
.driver = {
.name = "st-magn-i2c",
.of_match_table = st_magn_of_match,
},
.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");