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/mod_devicetable.h>
  13 #include <linux/acpi.h>
  14 #include <linux/i2c.h>
  15 #include <linux/iio/iio.h>
  16
  17 #include <linux/iio/common/st_sensors_i2c.h>
  18 #include "st_accel.h"
  19
  20 static const struct of_device_id st_accel_of_match[] = {
  21         {
  22                 /* An older compatible */
  23                 .compatible = "st,lis3lv02d",
  24                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  25         },
  26         {
  27                 .compatible = "st,lis3lv02dl-accel",
  28                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  29         },
  30         {
  31                 .compatible = "st,lsm303dlh-accel",
  32                 .data = LSM303DLH_ACCEL_DEV_NAME,
  33         },
  34         {
  35                 .compatible = "st,lsm303dlhc-accel",
  36                 .data = LSM303DLHC_ACCEL_DEV_NAME,
  37         },
  38         {
  39                 .compatible = "st,lis3dh-accel",
  40                 .data = LIS3DH_ACCEL_DEV_NAME,
  41         },
  42         {
  43                 .compatible = "st,lsm330d-accel",
  44                 .data = LSM330D_ACCEL_DEV_NAME,
  45         },
  46         {
  47                 .compatible = "st,lsm330dl-accel",
  48                 .data = LSM330DL_ACCEL_DEV_NAME,
  49         },
  50         {
  51                 .compatible = "st,lsm330dlc-accel",
  52                 .data = LSM330DLC_ACCEL_DEV_NAME,
  53         },
  54         {
  55                 .compatible = "st,lis331dl-accel",
  56                 .data = LIS331DL_ACCEL_DEV_NAME,
  57         },
  58         {
  59                 .compatible = "st,lis331dlh-accel",
  60                 .data = LIS331DLH_ACCEL_DEV_NAME,
  61         },
  62         {
  63                 .compatible = "st,lsm303dl-accel",
  64                 .data = LSM303DL_ACCEL_DEV_NAME,
  65         },
  66         {
  67                 .compatible = "st,lsm303dlm-accel",
  68                 .data = LSM303DLM_ACCEL_DEV_NAME,
  69         },
  70         {
  71                 .compatible = "st,lsm330-accel",
  72                 .data = LSM330_ACCEL_DEV_NAME,
  73         },
  74         {
  75                 .compatible = "st,lsm303agr-accel",
  76                 .data = LSM303AGR_ACCEL_DEV_NAME,
  77         },
  78         {
  79                 .compatible = "st,lis2dh12-accel",
  80                 .data = LIS2DH12_ACCEL_DEV_NAME,
  81         },
  82         {
  83                 .compatible = "st,h3lis331dl-accel",
  84                 .data = H3LIS331DL_ACCEL_DEV_NAME,
  85         },
  86         {
  87                 .compatible = "st,lis3l02dq",
  88                 .data = LIS3L02DQ_ACCEL_DEV_NAME,
  89         },
  90         {
  91                 .compatible = "st,lng2dm-accel",
  92                 .data = LNG2DM_ACCEL_DEV_NAME,
  93         },
  94         {
  95                 .compatible = "st,lis2dw12",
  96                 .data = LIS2DW12_ACCEL_DEV_NAME,
  97         },
  98         {
  99                 .compatible = "st,lis3de",
 100                 .data = LIS3DE_ACCEL_DEV_NAME,
 101         },
 102         {
 103                 .compatible = "st,lis2de12",
 104                 .data = LIS2DE12_ACCEL_DEV_NAME,
 105         },
 106         {
 107                 .compatible = "st,lis2hh12",
 108                 .data = LIS2HH12_ACCEL_DEV_NAME,
 109         },
 110         {},
 111 };
 112 MODULE_DEVICE_TABLE(of, st_accel_of_match);
 113
 114 #ifdef CONFIG_ACPI
 115 static const struct acpi_device_id st_accel_acpi_match[] = {
 116         {"SMO8840", (kernel_ulong_t)LIS2DH12_ACCEL_DEV_NAME},
 117         {"SMO8A90", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
 118         { },
 119 };
 120 MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match);
 121 #endif
 122
 123 static const struct i2c_device_id st_accel_id_table[] = {
 124         { LSM303DLH_ACCEL_DEV_NAME },
 125         { LSM303DLHC_ACCEL_DEV_NAME },
 126         { LIS3DH_ACCEL_DEV_NAME },
 127         { LSM330D_ACCEL_DEV_NAME },
 128         { LSM330DL_ACCEL_DEV_NAME },
 129         { LSM330DLC_ACCEL_DEV_NAME },
 130         { LIS331DLH_ACCEL_DEV_NAME },
 131         { LSM303DL_ACCEL_DEV_NAME },
 132         { LSM303DLM_ACCEL_DEV_NAME },
 133         { LSM330_ACCEL_DEV_NAME },
 134         { LSM303AGR_ACCEL_DEV_NAME },
 135         { LIS2DH12_ACCEL_DEV_NAME },
 136         { LIS3L02DQ_ACCEL_DEV_NAME },
 137         { LNG2DM_ACCEL_DEV_NAME },
 138         { H3LIS331DL_ACCEL_DEV_NAME },
 139         { LIS331DL_ACCEL_DEV_NAME },
 140         { LIS3LV02DL_ACCEL_DEV_NAME },
 141         { LIS2DW12_ACCEL_DEV_NAME },
 142         { LIS3DE_ACCEL_DEV_NAME },
 143         { LIS2DE12_ACCEL_DEV_NAME },
 144         { LIS2HH12_ACCEL_DEV_NAME },
 145         {},
 146 };
 147 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
 148
 149 static int st_accel_i2c_probe(struct i2c_client *client)
 150 {
 151         const struct st_sensor_settings *settings;
 152         struct st_sensor_data *adata;
 153         struct iio_dev *indio_dev;
 154         int ret;
 155
 156         st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
 157
 158         settings = st_accel_get_settings(client->name);
 159         if (!settings) {
 160                 dev_err(&client->dev, "device name %s not recognized.\n",
 161                         client->name);
 162                 return -ENODEV;
 163         }
 164
 165         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata));
 166         if (!indio_dev)
 167                 return -ENOMEM;
 168
 169         adata = iio_priv(indio_dev);
 170         adata->sensor_settings = (struct st_sensor_settings *)settings;
 171
 172         ret = st_sensors_i2c_configure(indio_dev, client);
 173         if (ret < 0)
 174                 return ret;
 175
 176         ret = st_sensors_power_enable(indio_dev);
 177         if (ret)
 178                 return ret;
 179
 180         return st_accel_common_probe(indio_dev);
 181 }
 182
 183 static struct i2c_driver st_accel_driver = {
 184         .driver = {
 185                 .name = "st-accel-i2c",
 186                 .of_match_table = st_accel_of_match,
 187                 .acpi_match_table = ACPI_PTR(st_accel_acpi_match),
 188         },
 189         .probe_new = st_accel_i2c_probe,
 190         .id_table = st_accel_id_table,
 191 };
 192 module_i2c_driver(st_accel_driver);
 193
 194 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 195 MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
 196 MODULE_LICENSE("GPL v2");