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/i2c.h> 14 #include <linux/module.h> 15 #include <linux/mod_devicetable.h> 16 #include <linux/regmap.h> 17 18 #include <linux/iio/common/st_sensors_i2c.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 i2c_device_id st_lsm9ds0_id_table[] = { 36 { LSM303D_IMU_DEV_NAME }, 37 { LSM9DS0_IMU_DEV_NAME }, 38 {} 39 }; 40 MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table); 41 42 static const struct acpi_device_id st_lsm9ds0_acpi_match[] = { 43 {"ACCL0001", (kernel_ulong_t)LSM303D_IMU_DEV_NAME}, 44 {} 45 }; 46 MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match); 47 48 static const struct regmap_config st_lsm9ds0_regmap_config = { 49 .reg_bits = 8, 50 .val_bits = 8, 51 .read_flag_mask = 0x80, 52 }; 53 54 static int st_lsm9ds0_i2c_probe(struct i2c_client *client) 55 { 56 const struct regmap_config *config = &st_lsm9ds0_regmap_config; 57 struct device *dev = &client->dev; 58 struct st_lsm9ds0 *lsm9ds0; 59 struct regmap *regmap; 60 61 st_sensors_dev_name_probe(dev, client->name, sizeof(client->name)); 62 63 lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL); 64 if (!lsm9ds0) 65 return -ENOMEM; 66 67 lsm9ds0->dev = dev; 68 lsm9ds0->name = client->name; 69 lsm9ds0->irq = client->irq; 70 71 regmap = devm_regmap_init_i2c(client, config); 72 if (IS_ERR(regmap)) 73 return PTR_ERR(regmap); 74 75 i2c_set_clientdata(client, lsm9ds0); 76 77 return st_lsm9ds0_probe(lsm9ds0, regmap); 78 } 79 80 static struct i2c_driver st_lsm9ds0_driver = { 81 .driver = { 82 .name = "st-lsm9ds0-i2c", 83 .of_match_table = st_lsm9ds0_of_match, 84 .acpi_match_table = st_lsm9ds0_acpi_match, 85 }, 86 .probe = st_lsm9ds0_i2c_probe, 87 .id_table = st_lsm9ds0_id_table, 88 }; 89 module_i2c_driver(st_lsm9ds0_driver); 90 91 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); 92 MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver"); 93 MODULE_LICENSE("GPL v2"); 94 MODULE_IMPORT_NS(IIO_ST_SENSORS); 95