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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * STMicroelectronics LSM9DS0 IMU driver4 *5 * Copyright (C) 2021, Intel Corporation6 *7 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>8 */9 10#include <linux/device.h>11#include <linux/err.h>12#include <linux/gfp_types.h>13#include <linux/module.h>14#include <linux/mod_devicetable.h>15#include <linux/regmap.h>16#include <linux/spi/spi.h>17 18#include <linux/iio/common/st_sensors_spi.h>19 20#include "st_lsm9ds0.h"21 22static const struct of_device_id st_lsm9ds0_of_match[] = {23 {24 .compatible = "st,lsm303d-imu",25 .data = LSM303D_IMU_DEV_NAME,26 },27 {28 .compatible = "st,lsm9ds0-imu",29 .data = LSM9DS0_IMU_DEV_NAME,30 },31 {}32};33MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);34 35static const struct spi_device_id st_lsm9ds0_id_table[] = {36 { LSM303D_IMU_DEV_NAME },37 { LSM9DS0_IMU_DEV_NAME },38 {}39};40MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table);41 42static const struct regmap_config st_lsm9ds0_regmap_config = {43 .reg_bits = 8,44 .val_bits = 8,45 .read_flag_mask = 0xc0,46};47 48static int st_lsm9ds0_spi_probe(struct spi_device *spi)49{50 struct device *dev = &spi->dev;51 struct st_lsm9ds0 *lsm9ds0;52 struct regmap *regmap;53 54 st_sensors_dev_name_probe(dev, spi->modalias, sizeof(spi->modalias));55 56 lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);57 if (!lsm9ds0)58 return -ENOMEM;59 60 lsm9ds0->dev = dev;61 lsm9ds0->name = spi->modalias;62 lsm9ds0->irq = spi->irq;63 64 regmap = devm_regmap_init_spi(spi, &st_lsm9ds0_regmap_config);65 if (IS_ERR(regmap))66 return PTR_ERR(regmap);67 68 spi_set_drvdata(spi, lsm9ds0);69 70 return st_lsm9ds0_probe(lsm9ds0, regmap);71}72 73static struct spi_driver st_lsm9ds0_driver = {74 .driver = {75 .name = "st-lsm9ds0-spi",76 .of_match_table = st_lsm9ds0_of_match,77 },78 .probe = st_lsm9ds0_spi_probe,79 .id_table = st_lsm9ds0_id_table,80};81module_spi_driver(st_lsm9ds0_driver);82 83MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");84MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver");85MODULE_LICENSE("GPL v2");86MODULE_IMPORT_NS(IIO_ST_SENSORS);87