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