text: // SPDX-License-Identifier: GPL-2.0-only
  /*
   * STMicroelectronics LSM9DS0 IMU driver
   *
   * Copyright (C) 2021, Intel Corporation
   *
   * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/mod_devicetable.h>
  #include <linux/regmap.h>
  #include <linux/spi/spi.h>
  
  #include <linux/iio/common/st_sensors_spi.h>
  
  #include "st_lsm9ds0.h"
  
  static const struct of_device_id st_lsm9ds0_of_match[] = {
  	{
  		.compatible = "st,lsm9ds0-imu",
  		.data = LSM9DS0_IMU_DEV_NAME,
  	},
  	{}
  };
  MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
  
  static const struct spi_device_id st_lsm9ds0_id_table[] = {
  	{ LSM9DS0_IMU_DEV_NAME },
  	{}
  };
  MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table);
  
  static const struct regmap_config st_lsm9ds0_regmap_config = {
  	.reg_bits	= 8,
  	.val_bits	= 8,
  	.read_flag_mask	= 0xc0,
  };
  
  static int st_lsm9ds0_spi_probe(struct spi_device *spi)
  {
  	struct device *dev = &spi->dev;
  	struct st_lsm9ds0 *lsm9ds0;
  	struct regmap *regmap;
  
  	st_sensors_dev_name_probe(dev, spi->modalias, sizeof(spi->modalias));
  
  	lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
  	if (!lsm9ds0)
  		return -ENOMEM;
  
  	lsm9ds0->dev = dev;
  	lsm9ds0->name = spi->modalias;
  	lsm9ds0->irq = spi->irq;
  
  	regmap = devm_regmap_init_spi(spi, &st_lsm9ds0_regmap_config);
  	if (IS_ERR(regmap))
  		return PTR_ERR(regmap);
  
  	spi_set_drvdata(spi, lsm9ds0);
  
  	return st_lsm9ds0_probe(lsm9ds0, regmap);
  }
  
  static struct spi_driver st_lsm9ds0_driver = {
  	.driver = {
  		.name = "st-lsm9ds0-spi",
  		.of_match_table = st_lsm9ds0_of_match,
  	},
  	.probe = st_lsm9ds0_spi_probe,
  	.id_table = st_lsm9ds0_id_table,
  };
  module_spi_driver(st_lsm9ds0_driver);
  
  MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
  MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver");
  MODULE_LICENSE("GPL v2");
  MODULE_IMPORT_NS(IIO_ST_SENSORS);
  