text: // 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"
  
  #ifdef CONFIG_OF
  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);
  #else
  #define st_magn_of_match NULL
  #endif
  
  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 = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
  	if (!indio_dev)
  		return -ENOMEM;
  
  	mdata = iio_priv(indio_dev);
  	st_sensors_of_name_probe(&client->dev, st_magn_of_match,
  				 client->name, sizeof(client->name));
  
  	st_sensors_i2c_configure(indio_dev, client, mdata);
  
  	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 = of_match_ptr(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");
  