text: // SPDX-License-Identifier: GPL-2.0-only
  /*
   * STMicroelectronics accelerometers 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/spi/spi.h>
  #include <linux/iio/iio.h>
  
  #include <linux/iio/common/st_sensors.h>
  #include <linux/iio/common/st_sensors_spi.h>
  #include "st_accel.h"
  
  /*
   * For new single-chip sensors use <device_name> as compatible string.
   * For old single-chip devices keep <device_name>-accel to maintain
   * compatibility
   */
  static const struct of_device_id st_accel_of_match[] = {
  	{
  		/* An older compatible */
  		.compatible = "st,lis302dl-spi",
  		.data = LIS3LV02DL_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis3lv02dl-accel",
  		.data = LIS3LV02DL_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis3dh-accel",
  		.data = LIS3DH_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330d-accel",
  		.data = LSM330D_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330dl-accel",
  		.data = LSM330DL_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330dlc-accel",
  		.data = LSM330DLC_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis331dlh-accel",
  		.data = LIS331DLH_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm330-accel",
  		.data = LSM330_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lsm303agr-accel",
  		.data = LSM303AGR_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis2dh12-accel",
  		.data = LIS2DH12_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis3l02dq",
  		.data = LIS3L02DQ_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lng2dm-accel",
  		.data = LNG2DM_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,h3lis331dl-accel",
  		.data = H3LIS331DL_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis331dl-accel",
  		.data = LIS331DL_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis2dw12",
  		.data = LIS2DW12_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis3dhh",
  		.data = LIS3DHH_ACCEL_DEV_NAME,
  	},
  	{
  		.compatible = "st,lis3de",
  		.data = LIS3DE_ACCEL_DEV_NAME,
  	},
  	{}
  };
  MODULE_DEVICE_TABLE(of, st_accel_of_match);
  
  static int st_accel_spi_probe(struct spi_device *spi)
  {
  	const struct st_sensor_settings *settings;
  	struct st_sensor_data *adata;
  	struct iio_dev *indio_dev;
  	int err;
  
  	st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
  
  	settings = st_accel_get_settings(spi->modalias);
  	if (!settings) {
  		dev_err(&spi->dev, "device name %s not recognized.\n",
  			spi->modalias);
  		return -ENODEV;
  	}
  
  	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata));
  	if (!indio_dev)
  		return -ENOMEM;
  
  	adata = iio_priv(indio_dev);
  	adata->sensor_settings = (struct st_sensor_settings *)settings;
  
  	err = st_sensors_spi_configure(indio_dev, spi);
  	if (err < 0)
  		return err;
  
  	err = st_sensors_power_enable(indio_dev);
  	if (err)
  		return err;
  
  	return st_accel_common_probe(indio_dev);
  }
  
  static const struct spi_device_id st_accel_id_table[] = {
  	{ LIS3DH_ACCEL_DEV_NAME },
  	{ LSM330D_ACCEL_DEV_NAME },
  	{ LSM330DL_ACCEL_DEV_NAME },
  	{ LSM330DLC_ACCEL_DEV_NAME },
  	{ LIS331DLH_ACCEL_DEV_NAME },
  	{ LSM330_ACCEL_DEV_NAME },
  	{ LSM303AGR_ACCEL_DEV_NAME },
  	{ LIS2DH12_ACCEL_DEV_NAME },
  	{ LIS3L02DQ_ACCEL_DEV_NAME },
  	{ LNG2DM_ACCEL_DEV_NAME },
  	{ H3LIS331DL_ACCEL_DEV_NAME },
  	{ LIS331DL_ACCEL_DEV_NAME },
  	{ LIS3LV02DL_ACCEL_DEV_NAME },
  	{ LIS2DW12_ACCEL_DEV_NAME },
  	{ LIS3DHH_ACCEL_DEV_NAME },
  	{ LIS3DE_ACCEL_DEV_NAME },
  	{},
  };
  MODULE_DEVICE_TABLE(spi, st_accel_id_table);
  
  static struct spi_driver st_accel_driver = {
  	.driver = {
  		.name = "st-accel-spi",
  		.of_match_table = st_accel_of_match,
  	},
  	.probe = st_accel_spi_probe,
  	.id_table = st_accel_id_table,
  };
  module_spi_driver(st_accel_driver);
  
  MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
  MODULE_LICENSE("GPL v2");
  