text: // SPDX-License-Identifier: GPL-2.0-only
  /*
   * STMicroelectronics gyroscopes driver
   *
   * Copyright 2012-2013 STMicroelectronics Inc.
   *
   * Denis Ciocca <denis.ciocca@st.com>
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/mod_devicetable.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_gyro.h"
  
  static const struct of_device_id st_gyro_of_match[] = {
  	{
  		.compatible = "st,l3g4200d-gyro",
  		.data = L3G4200D_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330d-gyro",
  		.data = LSM330D_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330dl-gyro",
  		.data = LSM330DL_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330dlc-gyro",
  		.data = LSM330DLC_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,l3gd20-gyro",
  		.data = L3GD20_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,l3gd20h-gyro",
  		.data = L3GD20H_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,l3g4is-gyro",
  		.data = L3G4IS_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330-gyro",
  		.data = LSM330_GYRO_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm9ds0-gyro",
  		.data = LSM9DS0_GYRO_DEV_NAME,
  	},
  	{},
  };
  MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  
  static int st_gyro_i2c_probe(struct i2c_client *client,
  			     const struct i2c_device_id *id)
  {
  	const struct st_sensor_settings *settings;
  	struct st_sensor_data *gdata;
  	struct iio_dev *indio_dev;
  	int err;
  
  	st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
  
  	settings = st_gyro_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(*gdata));
  	if (!indio_dev)
  		return -ENOMEM;
  
  	gdata = iio_priv(indio_dev);
  	gdata->sensor_settings = (struct st_sensor_settings *)settings;
  
  	err = st_sensors_i2c_configure(indio_dev, client);
  	if (err < 0)
  		return err;
  
  	err = st_sensors_power_enable(indio_dev);
  	if (err)
  		return err;
  
  	err = st_gyro_common_probe(indio_dev);
  	if (err < 0)
  		goto st_gyro_power_off;
  
  	return 0;
  
  st_gyro_power_off:
  	st_sensors_power_disable(indio_dev);
  
  	return err;
  }
  
  static int st_gyro_i2c_remove(struct i2c_client *client)
  {
  	struct iio_dev *indio_dev = i2c_get_clientdata(client);
  
  	st_gyro_common_remove(indio_dev);
  
  	st_sensors_power_disable(indio_dev);
  
  	return 0;
  }
  
  static const struct i2c_device_id st_gyro_id_table[] = {
  	{ L3G4200D_GYRO_DEV_NAME },
  	{ LSM330D_GYRO_DEV_NAME },
  	{ LSM330DL_GYRO_DEV_NAME },
  	{ LSM330DLC_GYRO_DEV_NAME },
  	{ L3GD20_GYRO_DEV_NAME },
  	{ L3GD20H_GYRO_DEV_NAME },
  	{ L3G4IS_GYRO_DEV_NAME },
  	{ LSM330_GYRO_DEV_NAME },
  	{ LSM9DS0_GYRO_DEV_NAME },
  	{},
  };
  MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
  
  static struct i2c_driver st_gyro_driver = {
  	.driver = {
  		.name = "st-gyro-i2c",
  		.of_match_table = st_gyro_of_match,
  	},
  	.probe = st_gyro_i2c_probe,
  	.remove = st_gyro_i2c_remove,
  	.id_table = st_gyro_id_table,
  };
  module_i2c_driver(st_gyro_driver);
  
  MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
  MODULE_LICENSE("GPL v2");
  