linux/drivers/iio/magnetometer/st_magn_i2c.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * STMicroelectronics magnetometers driver
   4 *
   5 * Copyright 2012-2013 STMicroelectronics Inc.
   6 *
   7 * Denis Ciocca <denis.ciocca@st.com>
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/module.h>
  12#include <linux/slab.h>
  13#include <linux/i2c.h>
  14#include <linux/iio/iio.h>
  15
  16#include <linux/iio/common/st_sensors.h>
  17#include <linux/iio/common/st_sensors_i2c.h>
  18#include "st_magn.h"
  19
  20static const struct of_device_id st_magn_of_match[] = {
  21        {
  22                .compatible = "st,lsm303dlh-magn",
  23                .data = LSM303DLH_MAGN_DEV_NAME,
  24        },
  25        {
  26                .compatible = "st,lsm303dlhc-magn",
  27                .data = LSM303DLHC_MAGN_DEV_NAME,
  28        },
  29        {
  30                .compatible = "st,lsm303dlm-magn",
  31                .data = LSM303DLM_MAGN_DEV_NAME,
  32        },
  33        {
  34                .compatible = "st,lis3mdl-magn",
  35                .data = LIS3MDL_MAGN_DEV_NAME,
  36        },
  37        {
  38                .compatible = "st,lsm303agr-magn",
  39                .data = LSM303AGR_MAGN_DEV_NAME,
  40        },
  41        {
  42                .compatible = "st,lis2mdl",
  43                .data = LIS2MDL_MAGN_DEV_NAME,
  44        },
  45        {
  46                .compatible = "st,lsm9ds1-magn",
  47                .data = LSM9DS1_MAGN_DEV_NAME,
  48        },
  49        {
  50                .compatible = "st,iis2mdc",
  51                .data = IIS2MDC_MAGN_DEV_NAME,
  52        },
  53        {},
  54};
  55MODULE_DEVICE_TABLE(of, st_magn_of_match);
  56
  57static int st_magn_i2c_probe(struct i2c_client *client,
  58                             const struct i2c_device_id *id)
  59{
  60        const struct st_sensor_settings *settings;
  61        struct st_sensor_data *mdata;
  62        struct iio_dev *indio_dev;
  63        int err;
  64
  65        st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
  66
  67        settings = st_magn_get_settings(client->name);
  68        if (!settings) {
  69                dev_err(&client->dev, "device name %s not recognized.\n",
  70                        client->name);
  71                return -ENODEV;
  72        }
  73
  74        indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
  75        if (!indio_dev)
  76                return -ENOMEM;
  77
  78        mdata = iio_priv(indio_dev);
  79        mdata->sensor_settings = (struct st_sensor_settings *)settings;
  80
  81        err = st_sensors_i2c_configure(indio_dev, client);
  82        if (err < 0)
  83                return err;
  84
  85        err = st_sensors_power_enable(indio_dev);
  86        if (err)
  87                return err;
  88
  89        err = st_magn_common_probe(indio_dev);
  90        if (err < 0)
  91                goto st_magn_power_off;
  92
  93        return 0;
  94
  95st_magn_power_off:
  96        st_sensors_power_disable(indio_dev);
  97
  98        return err;
  99}
 100
 101static int st_magn_i2c_remove(struct i2c_client *client)
 102{
 103        struct iio_dev *indio_dev = i2c_get_clientdata(client);
 104
 105        st_sensors_power_disable(indio_dev);
 106
 107        st_magn_common_remove(indio_dev);
 108
 109        return 0;
 110}
 111
 112static const struct i2c_device_id st_magn_id_table[] = {
 113        { LSM303DLH_MAGN_DEV_NAME },
 114        { LSM303DLHC_MAGN_DEV_NAME },
 115        { LSM303DLM_MAGN_DEV_NAME },
 116        { LIS3MDL_MAGN_DEV_NAME },
 117        { LSM303AGR_MAGN_DEV_NAME },
 118        { LIS2MDL_MAGN_DEV_NAME },
 119        { LSM9DS1_MAGN_DEV_NAME },
 120        { IIS2MDC_MAGN_DEV_NAME },
 121        {},
 122};
 123MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
 124
 125static struct i2c_driver st_magn_driver = {
 126        .driver = {
 127                .name = "st-magn-i2c",
 128                .of_match_table = st_magn_of_match,
 129        },
 130        .probe = st_magn_i2c_probe,
 131        .remove = st_magn_i2c_remove,
 132        .id_table = st_magn_id_table,
 133};
 134module_i2c_driver(st_magn_driver);
 135
 136MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 137MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
 138MODULE_LICENSE("GPL v2");
 139