kernel/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 };
  53 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  54 #else
  55 #define st_gyro_of_match NULL
  56 #endif
  57
  58 static int st_gyro_i2c_probe(struct i2c_client *client,
  59                                                 const struct i2c_device_id *id)
  60 {
  61         struct iio_dev *indio_dev;
  62         struct st_sensor_data *gdata;
  63         int err;
  64
  65         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
  66         if (!indio_dev)
  67                 return -ENOMEM;
  68
  69         gdata = iio_priv(indio_dev);
  70         st_sensors_of_i2c_probe(client, st_gyro_of_match);
  71
  72         st_sensors_i2c_configure(indio_dev, client, gdata);
  73
  74         err = st_gyro_common_probe(indio_dev);
  75         if (err < 0)
  76                 return err;
  77
  78         return 0;
  79 }
  80
  81 static int st_gyro_i2c_remove(struct i2c_client *client)
  82 {
  83         st_gyro_common_remove(i2c_get_clientdata(client));
  84
  85         return 0;
  86 }
  87
  88 static const struct i2c_device_id st_gyro_id_table[] = {
  89         { L3G4200D_GYRO_DEV_NAME },
  90         { LSM330D_GYRO_DEV_NAME },
  91         { LSM330DL_GYRO_DEV_NAME },
  92         { LSM330DLC_GYRO_DEV_NAME },
  93         { L3GD20_GYRO_DEV_NAME },
  94         { L3G4IS_GYRO_DEV_NAME },
  95         { LSM330_GYRO_DEV_NAME },
  96         {},
  97 };
  98 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
  99
 100 static struct i2c_driver st_gyro_driver = {
 101         .driver = {
 102                 .owner = THIS_MODULE,
 103                 .name = "st-gyro-i2c",
 104                 .of_match_table = of_match_ptr(st_gyro_of_match),
 105         },
 106         .probe = st_gyro_i2c_probe,
 107         .remove = st_gyro_i2c_remove,
 108         .id_table = st_gyro_id_table,
 109 };
 110 module_i2c_driver(st_gyro_driver);
 111
 112 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 113 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
 114 MODULE_LICENSE("GPL v2");