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 static const struct of_device_id st_gyro_of_match[] = {
  21         {
  22                 .compatible = "st,l3g4200d-gyro",
  23                 .data = L3G4200D_GYRO_DEV_NAME,
  24         },
  25         {
  26                 .compatible = "st,lsm330d-gyro",
  27                 .data = LSM330D_GYRO_DEV_NAME,
  28         },
  29         {
  30                 .compatible = "st,lsm330dl-gyro",
  31                 .data = LSM330DL_GYRO_DEV_NAME,
  32         },
  33         {
  34                 .compatible = "st,lsm330dlc-gyro",
  35                 .data = LSM330DLC_GYRO_DEV_NAME,
  36         },
  37         {
  38                 .compatible = "st,l3gd20-gyro",
  39                 .data = L3GD20_GYRO_DEV_NAME,
  40         },
  41         {
  42                 .compatible = "st,l3gd20h-gyro",
  43                 .data = L3GD20H_GYRO_DEV_NAME,
  44         },
  45         {
  46                 .compatible = "st,l3g4is-gyro",
  47                 .data = L3G4IS_GYRO_DEV_NAME,
  48         },
  49         {
  50                 .compatible = "st,lsm330-gyro",
  51                 .data = LSM330_GYRO_DEV_NAME,
  52         },
  53         {
  54                 .compatible = "st,lsm9ds0-gyro",
  55                 .data = LSM9DS0_GYRO_DEV_NAME,
  56         },
  57         {},
  58 };
  59 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  60
  61 static int st_gyro_i2c_probe(struct i2c_client *client,
  62                              const struct i2c_device_id *id)
  63 {
  64         const struct st_sensor_settings *settings;
  65         struct st_sensor_data *gdata;
  66         struct iio_dev *indio_dev;
  67         int err;
  68
  69         st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
  70
  71         settings = st_gyro_get_settings(client->name);
  72         if (!settings) {
  73                 dev_err(&client->dev, "device name %s not recognized.\n",
  74                         client->name);
  75                 return -ENODEV;
  76         }
  77
  78         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
  79         if (!indio_dev)
  80                 return -ENOMEM;
  81
  82         gdata = iio_priv(indio_dev);
  83         gdata->sensor_settings = (struct st_sensor_settings *)settings;
  84
  85         err = st_sensors_i2c_configure(indio_dev, client);
  86         if (err < 0)
  87                 return err;
  88
  89         err = st_sensors_power_enable(indio_dev);
  90         if (err)
  91                 return err;
  92
  93         err = st_gyro_common_probe(indio_dev);
  94         if (err < 0)
  95                 goto st_gyro_power_off;
  96
  97         return 0;
  98
  99 st_gyro_power_off:
 100         st_sensors_power_disable(indio_dev);
 101
 102         return err;
 103 }
 104
 105 static int st_gyro_i2c_remove(struct i2c_client *client)
 106 {
 107         struct iio_dev *indio_dev = i2c_get_clientdata(client);
 108
 109         st_gyro_common_remove(indio_dev);
 110
 111         st_sensors_power_disable(indio_dev);
 112
 113         return 0;
 114 }
 115
 116 static const struct i2c_device_id st_gyro_id_table[] = {
 117         { L3G4200D_GYRO_DEV_NAME },
 118         { LSM330D_GYRO_DEV_NAME },
 119         { LSM330DL_GYRO_DEV_NAME },
 120         { LSM330DLC_GYRO_DEV_NAME },
 121         { L3GD20_GYRO_DEV_NAME },
 122         { L3GD20H_GYRO_DEV_NAME },
 123         { L3G4IS_GYRO_DEV_NAME },
 124         { LSM330_GYRO_DEV_NAME },
 125         { LSM9DS0_GYRO_DEV_NAME },
 126         {},
 127 };
 128 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
 129
 130 static struct i2c_driver st_gyro_driver = {
 131         .driver = {
 132                 .name = "st-gyro-i2c",
 133                 .of_match_table = st_gyro_of_match,
 134         },
 135         .probe = st_gyro_i2c_probe,
 136         .remove = st_gyro_i2c_remove,
 137         .id_table = st_gyro_id_table,
 138 };
 139 module_i2c_driver(st_gyro_driver);
 140
 141 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 142 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
 143 MODULE_LICENSE("GPL v2");