1 /* 2 * STMicroelectronics magnetometers driver 3 * 4 * Copyright 2012-2013 STMicroelectronics Inc. 5 * 6 * Denis Ciocca <denis.ciocca@st.com> 7 * 8 * Licensed under the GPL-2. 9 */ 10 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/i2c.h> 15 #include <linux/iio/iio.h> 16 17 #include <linux/iio/common/st_sensors.h> 18 #include <linux/iio/common/st_sensors_i2c.h> 19 #include "st_magn.h" 20 21 #ifdef CONFIG_OF 22 static const struct of_device_id st_magn_of_match[] = { 23 { 24 .compatible = "st,lsm303dlhc-magn", 25 .data = LSM303DLHC_MAGN_DEV_NAME, 26 }, 27 { 28 .compatible = "st,lsm303dlm-magn", 29 .data = LSM303DLM_MAGN_DEV_NAME, 30 }, 31 { 32 .compatible = "st,lis3mdl-magn", 33 .data = LIS3MDL_MAGN_DEV_NAME, 34 }, 35 {}, 36 }; 37 MODULE_DEVICE_TABLE(of, st_magn_of_match); 38 #else 39 #define st_magn_of_match NULL 40 #endif 41 42 static int st_magn_i2c_probe(struct i2c_client *client, 43 const struct i2c_device_id *id) 44 { 45 struct iio_dev *indio_dev; 46 struct st_sensor_data *mdata; 47 int err; 48 49 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata)); 50 if (!indio_dev) 51 return -ENOMEM; 52 53 mdata = iio_priv(indio_dev); 54 st_sensors_of_i2c_probe(client, st_magn_of_match); 55 56 st_sensors_i2c_configure(indio_dev, client, mdata); 57 58 err = st_magn_common_probe(indio_dev); 59 if (err < 0) 60 return err; 61 62 return 0; 63 } 64 65 static int st_magn_i2c_remove(struct i2c_client *client) 66 { 67 struct iio_dev *indio_dev = i2c_get_clientdata(client); 68 st_magn_common_remove(indio_dev); 69 70 return 0; 71 } 72 73 static const struct i2c_device_id st_magn_id_table[] = { 74 { LSM303DLHC_MAGN_DEV_NAME }, 75 { LSM303DLM_MAGN_DEV_NAME }, 76 { LIS3MDL_MAGN_DEV_NAME }, 77 {}, 78 }; 79 MODULE_DEVICE_TABLE(i2c, st_magn_id_table); 80 81 static struct i2c_driver st_magn_driver = { 82 .driver = { 83 .owner = THIS_MODULE, 84 .name = "st-magn-i2c", 85 .of_match_table = of_match_ptr(st_magn_of_match), 86 }, 87 .probe = st_magn_i2c_probe, 88 .remove = st_magn_i2c_remove, 89 .id_table = st_magn_id_table, 90 }; 91 module_i2c_driver(st_magn_driver); 92 93 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 94 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver"); 95 MODULE_LICENSE("GPL v2"); 96