drivers/iio/gyro/st_gyro_i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * STMicroelectronics gyroscopes 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_gyro.h"
  19
  20 #ifdef CONFIG_OF
  21 static const struct of_device_id st_gyro_of_match[] = {
  22         {
  23                 .compatible = "st,l3g4200d-gyro",
  24                 .data = L3G4200D_GYRO_DEV_NAME,
  25         },
  26         {
  27                 .compatible = "st,lsm330d-gyro",
  28                 .data = LSM330D_GYRO_DEV_NAME,
  29         },
  30         {
  31                 .compatible = "st,lsm330dl-gyro",
  32                 .data = LSM330DL_GYRO_DEV_NAME,
  33         },
  34         {
  35                 .compatible = "st,lsm330dlc-gyro",
  36                 .data = LSM330DLC_GYRO_DEV_NAME,
  37         },
  38         {
  39                 .compatible = "st,l3gd20-gyro",
  40                 .data = L3GD20_GYRO_DEV_NAME,
  41         },
  42         {
  43                 .compatible = "st,l3gd20h-gyro",
  44                 .data = L3GD20H_GYRO_DEV_NAME,
  45         },
  46         {
  47                 .compatible = "st,l3g4is-gyro",
  48                 .data = L3G4IS_GYRO_DEV_NAME,
  49         },
  50         {
  51                 .compatible = "st,lsm330-gyro",
  52                 .data = LSM330_GYRO_DEV_NAME,
  53         },
  54         {
  55                 .compatible = "st,lsm9ds0-gyro",
  56                 .data = LSM9DS0_GYRO_DEV_NAME,
  57         },
  58         {},
  59 };
  60 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  61 #else
  62 #define st_gyro_of_match NULL
  63 #endif
  64
  65 static int st_gyro_i2c_probe(struct i2c_client *client,
  66                              const struct i2c_device_id *id)
  67 {
  68         const struct st_sensor_settings *settings;
  69         struct st_sensor_data *gdata;
  70         struct iio_dev *indio_dev;
  71         int err;
  72
  73         st_sensors_of_name_probe(&client->dev, st_gyro_of_match,
  74                                  client->name, sizeof(client->name));
  75
  76         settings = st_gyro_get_settings(client->name);
  77         if (!settings) {
  78                 dev_err(&client->dev, "device name %s not recognized.\n",
  79                         client->name);
  80                 return -ENODEV;
  81         }
  82
  83         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
  84         if (!indio_dev)
  85                 return -ENOMEM;
  86
  87         gdata = iio_priv(indio_dev);
  88         gdata->sensor_settings = (struct st_sensor_settings *)settings;
  89
  90         err = st_sensors_i2c_configure(indio_dev, client);
  91         if (err < 0)
  92                 return err;
  93
  94         err = st_gyro_common_probe(indio_dev);
  95         if (err < 0)
  96                 return err;
  97
  98         return 0;
  99 }
 100
 101 static int st_gyro_i2c_remove(struct i2c_client *client)
 102 {
 103         st_gyro_common_remove(i2c_get_clientdata(client));
 104
 105         return 0;
 106 }
 107
 108 static const struct i2c_device_id st_gyro_id_table[] = {
 109         { L3G4200D_GYRO_DEV_NAME },
 110         { LSM330D_GYRO_DEV_NAME },
 111         { LSM330DL_GYRO_DEV_NAME },
 112         { LSM330DLC_GYRO_DEV_NAME },
 113         { L3GD20_GYRO_DEV_NAME },
 114         { L3GD20H_GYRO_DEV_NAME },
 115         { L3G4IS_GYRO_DEV_NAME },
 116         { LSM330_GYRO_DEV_NAME },
 117         { LSM9DS0_GYRO_DEV_NAME },
 118         {},
 119 };
 120 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
 121
 122 static struct i2c_driver st_gyro_driver = {
 123         .driver = {
 124                 .name = "st-gyro-i2c",
 125                 .of_match_table = of_match_ptr(st_gyro_of_match),
 126         },
 127         .probe = st_gyro_i2c_probe,
 128         .remove = st_gyro_i2c_remove,
 129         .id_table = st_gyro_id_table,
 130 };
 131 module_i2c_driver(st_gyro_driver);
 132
 133 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 134 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
 135 MODULE_LICENSE("GPL v2");