kernel/drivers/iio/accel/st_accel_i2c.c

   1 /*
   2  * STMicroelectronics accelerometers 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_accel.h"
  20
  21 #ifdef CONFIG_OF
  22 static const struct of_device_id st_accel_of_match[] = {
  23         {
  24                 .compatible = "st,lis3lv02dl-accel",
  25                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  26         },
  27         {
  28                 .compatible = "st,lsm303dlh-accel",
  29                 .data = LSM303DLH_ACCEL_DEV_NAME,
  30         },
  31         {
  32                 .compatible = "st,lsm303dlhc-accel",
  33                 .data = LSM303DLHC_ACCEL_DEV_NAME,
  34         },
  35         {
  36                 .compatible = "st,lis3dh-accel",
  37                 .data = LIS3DH_ACCEL_DEV_NAME,
  38         },
  39         {
  40                 .compatible = "st,lsm330d-accel",
  41                 .data = LSM330D_ACCEL_DEV_NAME,
  42         },
  43         {
  44                 .compatible = "st,lsm330dl-accel",
  45                 .data = LSM330DL_ACCEL_DEV_NAME,
  46         },
  47         {
  48                 .compatible = "st,lsm330dlc-accel",
  49                 .data = LSM330DLC_ACCEL_DEV_NAME,
  50         },
  51         {
  52                 .compatible = "st,lis331dlh-accel",
  53                 .data = LIS331DLH_ACCEL_DEV_NAME,
  54         },
  55         {
  56                 .compatible = "st,lsm303dl-accel",
  57                 .data = LSM303DL_ACCEL_DEV_NAME,
  58         },
  59         {
  60                 .compatible = "st,lsm303dlm-accel",
  61                 .data = LSM303DLM_ACCEL_DEV_NAME,
  62         },
  63         {
  64                 .compatible = "st,lsm330-accel",
  65                 .data = LSM330_ACCEL_DEV_NAME,
  66         },
  67         {},
  68 };
  69 MODULE_DEVICE_TABLE(of, st_accel_of_match);
  70 #else
  71 #define st_accel_of_match NULL
  72 #endif
  73
  74 static int st_accel_i2c_probe(struct i2c_client *client,
  75                                                 const struct i2c_device_id *id)
  76 {
  77         struct iio_dev *indio_dev;
  78         struct st_sensor_data *adata;
  79         int err;
  80
  81         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata));
  82         if (!indio_dev)
  83                 return -ENOMEM;
  84
  85         adata = iio_priv(indio_dev);
  86         st_sensors_of_i2c_probe(client, st_accel_of_match);
  87
  88         st_sensors_i2c_configure(indio_dev, client, adata);
  89
  90         err = st_accel_common_probe(indio_dev);
  91         if (err < 0)
  92                 return err;
  93
  94         return 0;
  95 }
  96
  97 static int st_accel_i2c_remove(struct i2c_client *client)
  98 {
  99         st_accel_common_remove(i2c_get_clientdata(client));
 100
 101         return 0;
 102 }
 103
 104 static const struct i2c_device_id st_accel_id_table[] = {
 105         { LSM303DLH_ACCEL_DEV_NAME },
 106         { LSM303DLHC_ACCEL_DEV_NAME },
 107         { LIS3DH_ACCEL_DEV_NAME },
 108         { LSM330D_ACCEL_DEV_NAME },
 109         { LSM330DL_ACCEL_DEV_NAME },
 110         { LSM330DLC_ACCEL_DEV_NAME },
 111         { LIS331DLH_ACCEL_DEV_NAME },
 112         { LSM303DL_ACCEL_DEV_NAME },
 113         { LSM303DLM_ACCEL_DEV_NAME },
 114         { LSM330_ACCEL_DEV_NAME },
 115         {},
 116 };
 117 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
 118
 119 static struct i2c_driver st_accel_driver = {
 120         .driver = {
 121                 .owner = THIS_MODULE,
 122                 .name = "st-accel-i2c",
 123                 .of_match_table = of_match_ptr(st_accel_of_match),
 124         },
 125         .probe = st_accel_i2c_probe,
 126         .remove = st_accel_i2c_remove,
 127         .id_table = st_accel_id_table,
 128 };
 129 module_i2c_driver(st_accel_driver);
 130
 131 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 132 MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
 133 MODULE_LICENSE("GPL v2");