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/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_gyro.h" 19 20 static const struct of_device_id st_gyro_of_match[] = { 21 { 22 .compatible = "st,l3g4200d-gyro", 23 .data = L3G4200D_GYRO_DEV_NAME, 24 }, 25 { 26 .compatible = "st,lsm330d-gyro", 27 .data = LSM330D_GYRO_DEV_NAME, 28 }, 29 { 30 .compatible = "st,lsm330dl-gyro", 31 .data = LSM330DL_GYRO_DEV_NAME, 32 }, 33 { 34 .compatible = "st,lsm330dlc-gyro", 35 .data = LSM330DLC_GYRO_DEV_NAME, 36 }, 37 { 38 .compatible = "st,l3gd20-gyro", 39 .data = L3GD20_GYRO_DEV_NAME, 40 }, 41 { 42 .compatible = "st,l3gd20h-gyro", 43 .data = L3GD20H_GYRO_DEV_NAME, 44 }, 45 { 46 .compatible = "st,l3g4is-gyro", 47 .data = L3G4IS_GYRO_DEV_NAME, 48 }, 49 { 50 .compatible = "st,lsm330-gyro", 51 .data = LSM330_GYRO_DEV_NAME, 52 }, 53 { 54 .compatible = "st,lsm9ds0-gyro", 55 .data = LSM9DS0_GYRO_DEV_NAME, 56 }, 57 {}, 58 }; 59 MODULE_DEVICE_TABLE(of, st_gyro_of_match); 60 61 static int st_gyro_i2c_probe(struct i2c_client *client, 62 const struct i2c_device_id *id) 63 { 64 const struct st_sensor_settings *settings; 65 struct st_sensor_data *gdata; 66 struct iio_dev *indio_dev; 67 int err; 68 69 st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name)); 70 71 settings = st_gyro_get_settings(client->name); 72 if (!settings) { 73 dev_err(&client->dev, "device name %s not recognized.\n", 74 client->name); 75 return -ENODEV; 76 } 77 78 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata)); 79 if (!indio_dev) 80 return -ENOMEM; 81 82 gdata = iio_priv(indio_dev); 83 gdata->sensor_settings = (struct st_sensor_settings *)settings; 84 85 err = st_sensors_i2c_configure(indio_dev, client); 86 if (err < 0) 87 return err; 88 89 err = st_sensors_power_enable(indio_dev); 90 if (err) 91 return err; 92 93 err = st_gyro_common_probe(indio_dev); 94 if (err < 0) 95 goto st_gyro_power_off; 96 97 return 0; 98 99 st_gyro_power_off: 100 st_sensors_power_disable(indio_dev); 101 102 return err; 103 } 104 105 static int st_gyro_i2c_remove(struct i2c_client *client) 106 { 107 struct iio_dev *indio_dev = i2c_get_clientdata(client); 108 109 st_sensors_power_disable(indio_dev); 110 111 st_gyro_common_remove(indio_dev); 112 113 return 0; 114 } 115 116 static const struct i2c_device_id st_gyro_id_table[] = { 117 { L3G4200D_GYRO_DEV_NAME }, 118 { LSM330D_GYRO_DEV_NAME }, 119 { LSM330DL_GYRO_DEV_NAME }, 120 { LSM330DLC_GYRO_DEV_NAME }, 121 { L3GD20_GYRO_DEV_NAME }, 122 { L3GD20H_GYRO_DEV_NAME }, 123 { L3G4IS_GYRO_DEV_NAME }, 124 { LSM330_GYRO_DEV_NAME }, 125 { LSM9DS0_GYRO_DEV_NAME }, 126 {}, 127 }; 128 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table); 129 130 static struct i2c_driver st_gyro_driver = { 131 .driver = { 132 .name = "st-gyro-i2c", 133 .of_match_table = st_gyro_of_match, 134 }, 135 .probe = st_gyro_i2c_probe, 136 .remove = st_gyro_i2c_remove, 137 .id_table = st_gyro_id_table, 138 }; 139 module_i2c_driver(st_gyro_driver); 140 141 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 142 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver"); 143 MODULE_LICENSE("GPL v2"); 144