LXR linux/drivers/iio/magnetometer/st_magn

   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
  22static 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};
  41MODULE_DEVICE_TABLE(of, st_magn_of_match);
  42#else
  43#define st_magn_of_match NULL
  44#endif
  45
  46static int st_magn_i2c_probe(struct i2c_client *client,
  47                                                const struct i2c_device_id *id)
  48{
  49        struct iio_dev *indio_dev;
  50        struct st_sensor_data *mdata;
  51        int err;
  52
  53        indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
  54        if (!indio_dev)
  55                return -ENOMEM;
  56
  57        mdata = iio_priv(indio_dev);
  58        st_sensors_of_i2c_probe(client, st_magn_of_match);
  59
  60        st_sensors_i2c_configure(indio_dev, client, mdata);
  61
  62        err = st_magn_common_probe(indio_dev);
  63        if (err < 0)
  64                return err;
  65
  66        return 0;
  67}
  68
  69static int st_magn_i2c_remove(struct i2c_client *client)
  70{
  71        struct iio_dev *indio_dev = i2c_get_clientdata(client);
  72        st_magn_common_remove(indio_dev);
  73
  74        return 0;
  75}
  76
  77static const struct i2c_device_id st_magn_id_table[] = {
  78        { LSM303DLH_MAGN_DEV_NAME },
  79        { LSM303DLHC_MAGN_DEV_NAME },
  80        { LSM303DLM_MAGN_DEV_NAME },
  81        { LIS3MDL_MAGN_DEV_NAME },
  82        {},
  83};
  84MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
  85
  86static struct i2c_driver st_magn_driver = {
  87        .driver = {
  88                .owner = THIS_MODULE,
  89                .name = "st-magn-i2c",
  90                .of_match_table = of_match_ptr(st_magn_of_match),
  91        },
  92        .probe = st_magn_i2c_probe,
  93        .remove = st_magn_i2c_remove,
  94        .id_table = st_magn_id_table,
  95};
  96module_i2c_driver(st_magn_driver);
  97
  98MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  99MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
 100MODULE_LICENSE("GPL v2");
 101