1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics gyroscopes 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_gyro.h" 19 20 #ifdef CONFIG_OF 21 static const struct of_device_id st_gyro_of_match[] = { 22 { 23 .compatible = "st,l3g4200d-gyro", 24 .data = L3G4200D_GYRO_DEV_NAME, 25 }, 26 { 27 .compatible = "st,lsm330d-gyro", 28 .data = LSM330D_GYRO_DEV_NAME, 29 }, 30 { 31 .compatible = "st,lsm330dl-gyro", 32 .data = LSM330DL_GYRO_DEV_NAME, 33 }, 34 { 35 .compatible = "st,lsm330dlc-gyro", 36 .data = LSM330DLC_GYRO_DEV_NAME, 37 }, 38 { 39 .compatible = "st,l3gd20-gyro", 40 .data = L3GD20_GYRO_DEV_NAME, 41 }, 42 { 43 .compatible = "st,l3gd20h-gyro", 44 .data = L3GD20H_GYRO_DEV_NAME, 45 }, 46 { 47 .compatible = "st,l3g4is-gyro", 48 .data = L3G4IS_GYRO_DEV_NAME, 49 }, 50 { 51 .compatible = "st,lsm330-gyro", 52 .data = LSM330_GYRO_DEV_NAME, 53 }, 54 { 55 .compatible = "st,lsm9ds0-gyro", 56 .data = LSM9DS0_GYRO_DEV_NAME, 57 }, 58 {}, 59 }; 60 MODULE_DEVICE_TABLE(of, st_gyro_of_match); 61 #else 62 #define st_gyro_of_match NULL 63 #endif 64 65 static int st_gyro_i2c_probe(struct i2c_client *client, 66 const struct i2c_device_id *id) 67 { 68 const struct st_sensor_settings *settings; 69 struct st_sensor_data *gdata; 70 struct iio_dev *indio_dev; 71 int err; 72 73 st_sensors_of_name_probe(&client->dev, st_gyro_of_match, 74 client->name, sizeof(client->name)); 75 76 settings = st_gyro_get_settings(client->name); 77 if (!settings) { 78 dev_err(&client->dev, "device name %s not recognized.\n", 79 client->name); 80 return -ENODEV; 81 } 82 83 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata)); 84 if (!indio_dev) 85 return -ENOMEM; 86 87 gdata = iio_priv(indio_dev); 88 gdata->sensor_settings = (struct st_sensor_settings *)settings; 89 90 err = st_sensors_i2c_configure(indio_dev, client); 91 if (err < 0) 92 return err; 93 94 err = st_gyro_common_probe(indio_dev); 95 if (err < 0) 96 return err; 97 98 return 0; 99 } 100 101 static int st_gyro_i2c_remove(struct i2c_client *client) 102 { 103 st_gyro_common_remove(i2c_get_clientdata(client)); 104 105 return 0; 106 } 107 108 static const struct i2c_device_id st_gyro_id_table[] = { 109 { L3G4200D_GYRO_DEV_NAME }, 110 { LSM330D_GYRO_DEV_NAME }, 111 { LSM330DL_GYRO_DEV_NAME }, 112 { LSM330DLC_GYRO_DEV_NAME }, 113 { L3GD20_GYRO_DEV_NAME }, 114 { L3GD20H_GYRO_DEV_NAME }, 115 { L3G4IS_GYRO_DEV_NAME }, 116 { LSM330_GYRO_DEV_NAME }, 117 { LSM9DS0_GYRO_DEV_NAME }, 118 {}, 119 }; 120 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table); 121 122 static struct i2c_driver st_gyro_driver = { 123 .driver = { 124 .name = "st-gyro-i2c", 125 .of_match_table = of_match_ptr(st_gyro_of_match), 126 }, 127 .probe = st_gyro_i2c_probe, 128 .remove = st_gyro_i2c_remove, 129 .id_table = st_gyro_id_table, 130 }; 131 module_i2c_driver(st_gyro_driver); 132 133 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 134 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver"); 135 MODULE_LICENSE("GPL v2"); 136