drivers/iio/accel/st_accel_i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * STMicroelectronics accelerometers 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/acpi.h>
  14 #include <linux/i2c.h>
  15 #include <linux/iio/iio.h>
  16 #include <linux/property.h>
  17
  18 #include <linux/iio/common/st_sensors_i2c.h>
  19 #include "st_accel.h"
  20
  21 #ifdef CONFIG_OF
  22 static const struct of_device_id st_accel_of_match[] = {
  23         {
  24                 /* An older compatible */
  25                 .compatible = "st,lis3lv02d",
  26                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  27         },
  28         {
  29                 .compatible = "st,lis3lv02dl-accel",
  30                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  31         },
  32         {
  33                 .compatible = "st,lsm303dlh-accel",
  34                 .data = LSM303DLH_ACCEL_DEV_NAME,
  35         },
  36         {
  37                 .compatible = "st,lsm303dlhc-accel",
  38                 .data = LSM303DLHC_ACCEL_DEV_NAME,
  39         },
  40         {
  41                 .compatible = "st,lis3dh-accel",
  42                 .data = LIS3DH_ACCEL_DEV_NAME,
  43         },
  44         {
  45                 .compatible = "st,lsm330d-accel",
  46                 .data = LSM330D_ACCEL_DEV_NAME,
  47         },
  48         {
  49                 .compatible = "st,lsm330dl-accel",
  50                 .data = LSM330DL_ACCEL_DEV_NAME,
  51         },
  52         {
  53                 .compatible = "st,lsm330dlc-accel",
  54                 .data = LSM330DLC_ACCEL_DEV_NAME,
  55         },
  56         {
  57                 .compatible = "st,lis331dl-accel",
  58                 .data = LIS331DL_ACCEL_DEV_NAME,
  59         },
  60         {
  61                 .compatible = "st,lis331dlh-accel",
  62                 .data = LIS331DLH_ACCEL_DEV_NAME,
  63         },
  64         {
  65                 .compatible = "st,lsm303dl-accel",
  66                 .data = LSM303DL_ACCEL_DEV_NAME,
  67         },
  68         {
  69                 .compatible = "st,lsm303dlm-accel",
  70                 .data = LSM303DLM_ACCEL_DEV_NAME,
  71         },
  72         {
  73                 .compatible = "st,lsm330-accel",
  74                 .data = LSM330_ACCEL_DEV_NAME,
  75         },
  76         {
  77                 .compatible = "st,lsm303agr-accel",
  78                 .data = LSM303AGR_ACCEL_DEV_NAME,
  79         },
  80         {
  81                 .compatible = "st,lis2dh12-accel",
  82                 .data = LIS2DH12_ACCEL_DEV_NAME,
  83         },
  84         {
  85                 .compatible = "st,h3lis331dl-accel",
  86                 .data = H3LIS331DL_ACCEL_DEV_NAME,
  87         },
  88         {
  89                 .compatible = "st,lis3l02dq",
  90                 .data = LIS3L02DQ_ACCEL_DEV_NAME,
  91         },
  92         {
  93                 .compatible = "st,lng2dm-accel",
  94                 .data = LNG2DM_ACCEL_DEV_NAME,
  95         },
  96         {
  97                 .compatible = "st,lis2dw12",
  98                 .data = LIS2DW12_ACCEL_DEV_NAME,
  99         },
 100         {
 101                 .compatible = "st,lis3de",
 102                 .data = LIS3DE_ACCEL_DEV_NAME,
 103         },
 104         {
 105                 .compatible = "st,lis2de12",
 106                 .data = LIS2DE12_ACCEL_DEV_NAME,
 107         },
 108         {},
 109 };
 110 MODULE_DEVICE_TABLE(of, st_accel_of_match);
 111 #else
 112 #define st_accel_of_match NULL
 113 #endif
 114
 115 #ifdef CONFIG_ACPI
 116 static const struct acpi_device_id st_accel_acpi_match[] = {
 117         {"SMO8840", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
 118         {"SMO8A90", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
 119         { },
 120 };
 121 MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match);
 122 #else
 123 #define st_accel_acpi_match NULL
 124 #endif
 125
 126 static const struct i2c_device_id st_accel_id_table[] = {
 127         { LSM303DLH_ACCEL_DEV_NAME },
 128         { LSM303DLHC_ACCEL_DEV_NAME },
 129         { LIS3DH_ACCEL_DEV_NAME },
 130         { LSM330D_ACCEL_DEV_NAME },
 131         { LSM330DL_ACCEL_DEV_NAME },
 132         { LSM330DLC_ACCEL_DEV_NAME },
 133         { LIS331DLH_ACCEL_DEV_NAME },
 134         { LSM303DL_ACCEL_DEV_NAME },
 135         { LSM303DLM_ACCEL_DEV_NAME },
 136         { LSM330_ACCEL_DEV_NAME },
 137         { LSM303AGR_ACCEL_DEV_NAME },
 138         { LIS2DH12_ACCEL_DEV_NAME },
 139         { LIS3L02DQ_ACCEL_DEV_NAME },
 140         { LNG2DM_ACCEL_DEV_NAME },
 141         { H3LIS331DL_ACCEL_DEV_NAME },
 142         { LIS331DL_ACCEL_DEV_NAME },
 143         { LIS3LV02DL_ACCEL_DEV_NAME },
 144         { LIS2DW12_ACCEL_DEV_NAME },
 145         { LIS3DE_ACCEL_DEV_NAME },
 146         { LIS2DE12_ACCEL_DEV_NAME },
 147         {},
 148 };
 149 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
 150
 151 static int st_accel_i2c_probe(struct i2c_client *client)
 152 {
 153         const struct st_sensor_settings *settings;
 154         struct st_sensor_data *adata;
 155         struct iio_dev *indio_dev;
 156         const char *match;
 157         int ret;
 158
 159         match = device_get_match_data(&client->dev);
 160         if (match)
 161                 strlcpy(client->name, match, sizeof(client->name));
 162
 163         settings = st_accel_get_settings(client->name);
 164         if (!settings) {
 165                 dev_err(&client->dev, "device name %s not recognized.\n",
 166                         client->name);
 167                 return -ENODEV;
 168         }
 169
 170         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata));
 171         if (!indio_dev)
 172                 return -ENOMEM;
 173
 174         adata = iio_priv(indio_dev);
 175         adata->sensor_settings = (struct st_sensor_settings *)settings;
 176
 177         ret = st_sensors_i2c_configure(indio_dev, client);
 178         if (ret < 0)
 179                 return ret;
 180
 181         ret = st_accel_common_probe(indio_dev);
 182         if (ret < 0)
 183                 return ret;
 184
 185         return 0;
 186 }
 187
 188 static int st_accel_i2c_remove(struct i2c_client *client)
 189 {
 190         st_accel_common_remove(i2c_get_clientdata(client));
 191
 192         return 0;
 193 }
 194
 195 static struct i2c_driver st_accel_driver = {
 196         .driver = {
 197                 .name = "st-accel-i2c",
 198                 .of_match_table = of_match_ptr(st_accel_of_match),
 199                 .acpi_match_table = ACPI_PTR(st_accel_acpi_match),
 200         },
 201         .probe_new = st_accel_i2c_probe,
 202         .remove = st_accel_i2c_remove,
 203         .id_table = st_accel_id_table,
 204 };
 205 module_i2c_driver(st_accel_driver);
 206
 207 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 208 MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
 209 MODULE_LICENSE("GPL v2");