1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics magnetometers driver 4 * 5 * Copyright 2012-2013 STMicroelectronics Inc. 6 * 7 * Denis Ciocca <denis.ciocca@st.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/mod_devicetable.h> 13 #include <linux/i2c.h> 14 #include <linux/iio/iio.h> 15 16 #include <linux/iio/common/st_sensors.h> 17 #include <linux/iio/common/st_sensors_i2c.h> 18 #include "st_magn.h" 19 20 static const struct of_device_id st_magn_of_match[] = { 21 { 22 .compatible = "st,lsm303dlh-magn", 23 .data = LSM303DLH_MAGN_DEV_NAME, 24 }, 25 { 26 .compatible = "st,lsm303dlhc-magn", 27 .data = LSM303DLHC_MAGN_DEV_NAME, 28 }, 29 { 30 .compatible = "st,lsm303dlm-magn", 31 .data = LSM303DLM_MAGN_DEV_NAME, 32 }, 33 { 34 .compatible = "st,lis3mdl-magn", 35 .data = LIS3MDL_MAGN_DEV_NAME, 36 }, 37 { 38 .compatible = "st,lsm303agr-magn", 39 .data = LSM303AGR_MAGN_DEV_NAME, 40 }, 41 { 42 .compatible = "st,lis2mdl", 43 .data = LIS2MDL_MAGN_DEV_NAME, 44 }, 45 { 46 .compatible = "st,lsm9ds1-magn", 47 .data = LSM9DS1_MAGN_DEV_NAME, 48 }, 49 { 50 .compatible = "st,iis2mdc", 51 .data = IIS2MDC_MAGN_DEV_NAME, 52 }, 53 {}, 54 }; 55 MODULE_DEVICE_TABLE(of, st_magn_of_match); 56 57 static int st_magn_i2c_probe(struct i2c_client *client, 58 const struct i2c_device_id *id) 59 { 60 const struct st_sensor_settings *settings; 61 struct st_sensor_data *mdata; 62 struct iio_dev *indio_dev; 63 int err; 64 65 st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name)); 66 67 settings = st_magn_get_settings(client->name); 68 if (!settings) { 69 dev_err(&client->dev, "device name %s not recognized.\n", 70 client->name); 71 return -ENODEV; 72 } 73 74 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata)); 75 if (!indio_dev) 76 return -ENOMEM; 77 78 mdata = iio_priv(indio_dev); 79 mdata->sensor_settings = (struct st_sensor_settings *)settings; 80 81 err = st_sensors_i2c_configure(indio_dev, client); 82 if (err < 0) 83 return err; 84 85 err = st_sensors_power_enable(indio_dev); 86 if (err) 87 return err; 88 89 return st_magn_common_probe(indio_dev); 90 } 91 92 static const struct i2c_device_id st_magn_id_table[] = { 93 { LSM303DLH_MAGN_DEV_NAME }, 94 { LSM303DLHC_MAGN_DEV_NAME }, 95 { LSM303DLM_MAGN_DEV_NAME }, 96 { LIS3MDL_MAGN_DEV_NAME }, 97 { LSM303AGR_MAGN_DEV_NAME }, 98 { LIS2MDL_MAGN_DEV_NAME }, 99 { LSM9DS1_MAGN_DEV_NAME }, 100 { IIS2MDC_MAGN_DEV_NAME }, 101 {}, 102 }; 103 MODULE_DEVICE_TABLE(i2c, st_magn_id_table); 104 105 static struct i2c_driver st_magn_driver = { 106 .driver = { 107 .name = "st-magn-i2c", 108 .of_match_table = st_magn_of_match, 109 }, 110 .probe = st_magn_i2c_probe, 111 .id_table = st_magn_id_table, 112 }; 113 module_i2c_driver(st_magn_driver); 114 115 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 116 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver"); 117 MODULE_LICENSE("GPL v2"); 118 MODULE_IMPORT_NS(IIO_ST_SENSORS); 119