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                .compatible = "st,lsm303agr-magn",
  41                .data = LSM303AGR_MAGN_DEV_NAME,
  42        },
  43        {},
  44};
  45MODULE_DEVICE_TABLE(of, st_magn_of_match);
  46#else
  47#define st_magn_of_match NULL
  48#endif
  49
  50static 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
  73static 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
  81static 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};
  89MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
  90
  91static 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};
 100module_i2c_driver(st_magn_driver);
 101
 102MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 103MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
 104MODULE_LICENSE("GPL v2");
 105