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,lsm303dlh-magn", 25 .data = LSM303DLH_MAGN_DEV_NAME, 26 }, 27 { 28 .compatible = "st,lsm303dlhc-magn", 29 .data = LSM303DLHC_MAGN_DEV_NAME, 30 }, 31 { 32 .compatible = "st,lsm303dlm-magn", 33 .data = LSM303DLM_MAGN_DEV_NAME, 34 }, 35 { 36 .compatible = "st,lis3mdl-magn", 37 .data = LIS3MDL_MAGN_DEV_NAME, 38 }, 39 { 40 .compatible = "st,lsm303agr-magn", 41 .data = LSM303AGR_MAGN_DEV_NAME, 42 }, 43 {}, 44 }; 45 MODULE_DEVICE_TABLE(of, st_magn_of_match); 46 #else 47 #define st_magn_of_match NULL 48 #endif 49 50 static int st_magn_i2c_probe(struct i2c_client *client, 51 const struct i2c_device_id *id) 52 { 53 struct iio_dev *indio_dev; 54 struct st_sensor_data *mdata; 55 int err; 56 57 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata)); 58 if (!indio_dev) 59 return -ENOMEM; 60 61 mdata = iio_priv(indio_dev); 62 st_sensors_of_i2c_probe(client, st_magn_of_match); 63 64 st_sensors_i2c_configure(indio_dev, client, mdata); 65 66 err = st_magn_common_probe(indio_dev); 67 if (err < 0) 68 return err; 69 70 return 0; 71 } 72 73 static int st_magn_i2c_remove(struct i2c_client *client) 74 { 75 struct iio_dev *indio_dev = i2c_get_clientdata(client); 76 st_magn_common_remove(indio_dev); 77 78 return 0; 79 } 80 81 static const struct i2c_device_id st_magn_id_table[] = { 82 { LSM303DLH_MAGN_DEV_NAME }, 83 { LSM303DLHC_MAGN_DEV_NAME }, 84 { LSM303DLM_MAGN_DEV_NAME }, 85 { LIS3MDL_MAGN_DEV_NAME }, 86 { LSM303AGR_MAGN_DEV_NAME }, 87 {}, 88 }; 89 MODULE_DEVICE_TABLE(i2c, st_magn_id_table); 90 91 static struct i2c_driver st_magn_driver = { 92 .driver = { 93 .name = "st-magn-i2c", 94 .of_match_table = of_match_ptr(st_magn_of_match), 95 }, 96 .probe = st_magn_i2c_probe, 97 .remove = st_magn_i2c_remove, 98 .id_table = st_magn_id_table, 99 }; 100 module_i2c_driver(st_magn_driver); 101 102 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 103 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver"); 104 MODULE_LICENSE("GPL v2"); 105