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