drivers/iio/gyro/st_gyro_i2c.c

   1 /*
   2  * STMicroelectronics gyroscopes 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_gyro.h"
  20
  21 #ifdef CONFIG_OF
  22 static const struct of_device_id st_gyro_of_match[] = {
  23         {
  24                 .compatible = "st,l3g4200d-gyro",
  25                 .data = L3G4200D_GYRO_DEV_NAME,
  26         },
  27         {
  28                 .compatible = "st,lsm330d-gyro",
  29                 .data = LSM330D_GYRO_DEV_NAME,
  30         },
  31         {
  32                 .compatible = "st,lsm330dl-gyro",
  33                 .data = LSM330DL_GYRO_DEV_NAME,
  34         },
  35         {
  36                 .compatible = "st,lsm330dlc-gyro",
  37                 .data = LSM330DLC_GYRO_DEV_NAME,
  38         },
  39         {
  40                 .compatible = "st,l3gd20-gyro",
  41                 .data = L3GD20_GYRO_DEV_NAME,
  42         },
  43         {
  44                 .compatible = "st,l3g4is-gyro",
  45                 .data = L3G4IS_GYRO_DEV_NAME,
  46         },
  47         {
  48                 .compatible = "st,lsm330-gyro",
  49                 .data = LSM330_GYRO_DEV_NAME,
  50         },
  51         {
  52                 .compatible = "st,lsm9ds0-gyro",
  53                 .data = LSM9DS0_GYRO_DEV_NAME,
  54         },
  55         {},
  56 };
  57 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  58 #else
  59 #define st_gyro_of_match NULL
  60 #endif
  61
  62 static int st_gyro_i2c_probe(struct i2c_client *client,
  63                                                 const struct i2c_device_id *id)
  64 {
  65         struct iio_dev *indio_dev;
  66         struct st_sensor_data *gdata;
  67         int err;
  68
  69         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
  70         if (!indio_dev)
  71                 return -ENOMEM;
  72
  73         gdata = iio_priv(indio_dev);
  74         st_sensors_of_i2c_probe(client, st_gyro_of_match);
  75
  76         st_sensors_i2c_configure(indio_dev, client, gdata);
  77
  78         err = st_gyro_common_probe(indio_dev);
  79         if (err < 0)
  80                 return err;
  81
  82         return 0;
  83 }
  84
  85 static int st_gyro_i2c_remove(struct i2c_client *client)
  86 {
  87         st_gyro_common_remove(i2c_get_clientdata(client));
  88
  89         return 0;
  90 }
  91
  92 static const struct i2c_device_id st_gyro_id_table[] = {
  93         { L3G4200D_GYRO_DEV_NAME },
  94         { LSM330D_GYRO_DEV_NAME },
  95         { LSM330DL_GYRO_DEV_NAME },
  96         { LSM330DLC_GYRO_DEV_NAME },
  97         { L3GD20_GYRO_DEV_NAME },
  98         { L3G4IS_GYRO_DEV_NAME },
  99         { LSM330_GYRO_DEV_NAME },
 100         { LSM9DS0_GYRO_DEV_NAME },
 101         {},
 102 };
 103 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
 104
 105 static struct i2c_driver st_gyro_driver = {
 106         .driver = {
 107                 .name = "st-gyro-i2c",
 108                 .of_match_table = of_match_ptr(st_gyro_of_match),
 109         },
 110         .probe = st_gyro_i2c_probe,
 111         .remove = st_gyro_i2c_remove,
 112         .id_table = st_gyro_id_table,
 113 };
 114 module_i2c_driver(st_gyro_driver);
 115
 116 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 117 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
 118 MODULE_LICENSE("GPL v2");