1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics LSM9DS0 IMU driver 4 * 5 * Copyright (C) 2021, Intel Corporation 6 * 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 22 static 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 }; 33 MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match); 34 35 static const struct spi_device_id st_lsm9ds0_id_table[] = { 36 { LSM303D_IMU_DEV_NAME }, 37 { LSM9DS0_IMU_DEV_NAME }, 38 {} 39 }; 40 MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table); 41 42 static const struct regmap_config st_lsm9ds0_regmap_config = { 43 .reg_bits = 8, 44 .val_bits = 8, 45 .read_flag_mask = 0xc0, 46 }; 47 48 static 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 73 static 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 }; 81 module_spi_driver(st_lsm9ds0_driver); 82 83 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); 84 MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver"); 85 MODULE_LICENSE("GPL v2"); 86 MODULE_IMPORT_NS(IIO_ST_SENSORS); 87