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/slab.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 err = st_magn_common_probe(indio_dev); 90 if (err < 0) 91 goto st_magn_power_off; 92 93 return 0; 94 95 st_magn_power_off: 96 st_sensors_power_disable(indio_dev); 97 98 return err; 99 } 100 101 static int st_magn_i2c_remove(struct i2c_client *client) 102 { 103 struct iio_dev *indio_dev = i2c_get_clientdata(client); 104 105 st_sensors_power_disable(indio_dev); 106 107 st_magn_common_remove(indio_dev); 108 109 return 0; 110 } 111 112 static const struct i2c_device_id st_magn_id_table[] = { 113 { LSM303DLH_MAGN_DEV_NAME }, 114 { LSM303DLHC_MAGN_DEV_NAME }, 115 { LSM303DLM_MAGN_DEV_NAME }, 116 { LIS3MDL_MAGN_DEV_NAME }, 117 { LSM303AGR_MAGN_DEV_NAME }, 118 { LIS2MDL_MAGN_DEV_NAME }, 119 { LSM9DS1_MAGN_DEV_NAME }, 120 { IIS2MDC_MAGN_DEV_NAME }, 121 {}, 122 }; 123 MODULE_DEVICE_TABLE(i2c, st_magn_id_table); 124 125 static struct i2c_driver st_magn_driver = { 126 .driver = { 127 .name = "st-magn-i2c", 128 .of_match_table = st_magn_of_match, 129 }, 130 .probe = st_magn_i2c_probe, 131 .remove = st_magn_i2c_remove, 132 .id_table = st_magn_id_table, 133 }; 134 module_i2c_driver(st_magn_driver); 135 136 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 137 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver"); 138 MODULE_LICENSE("GPL v2"); 139