drivers/iio/accel/st_accel_spi.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/spi/spi.h>
  14 #include <linux/iio/iio.h>
  15
  16 #include <linux/iio/common/st_sensors.h>
  17 #include <linux/iio/common/st_sensors_spi.h>
  18 #include "st_accel.h"
  19
  20 #ifdef CONFIG_OF
  21 /*
  22  * For new single-chip sensors use <device_name> as compatible string.
  23  * For old single-chip devices keep <device_name>-accel to maintain
  24  * compatibility
  25  */
  26 static const struct of_device_id st_accel_of_match[] = {
  27         {
  28                 /* An older compatible */
  29                 .compatible = "st,lis302dl-spi",
  30                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  31         },
  32         {
  33                 .compatible = "st,lis3lv02dl-accel",
  34                 .data = LIS3LV02DL_ACCEL_DEV_NAME,
  35         },
  36         {
  37                 .compatible = "st,lis3dh-accel",
  38                 .data = LIS3DH_ACCEL_DEV_NAME,
  39         },
  40         {
  41                 .compatible = "st,lsm330d-accel",
  42                 .data = LSM330D_ACCEL_DEV_NAME,
  43         },
  44         {
  45                 .compatible = "st,lsm330dl-accel",
  46                 .data = LSM330DL_ACCEL_DEV_NAME,
  47         },
  48         {
  49                 .compatible = "st,lsm330dlc-accel",
  50                 .data = LSM330DLC_ACCEL_DEV_NAME,
  51         },
  52         {
  53                 .compatible = "st,lis331dlh-accel",
  54                 .data = LIS331DLH_ACCEL_DEV_NAME,
  55         },
  56         {
  57                 .compatible = "st,lsm330-accel",
  58                 .data = LSM330_ACCEL_DEV_NAME,
  59         },
  60         {
  61                 .compatible = "st,lsm303agr-accel",
  62                 .data = LSM303AGR_ACCEL_DEV_NAME,
  63         },
  64         {
  65                 .compatible = "st,lis2dh12-accel",
  66                 .data = LIS2DH12_ACCEL_DEV_NAME,
  67         },
  68         {
  69                 .compatible = "st,lis3l02dq",
  70                 .data = LIS3L02DQ_ACCEL_DEV_NAME,
  71         },
  72         {
  73                 .compatible = "st,lng2dm-accel",
  74                 .data = LNG2DM_ACCEL_DEV_NAME,
  75         },
  76         {
  77                 .compatible = "st,h3lis331dl-accel",
  78                 .data = H3LIS331DL_ACCEL_DEV_NAME,
  79         },
  80         {
  81                 .compatible = "st,lis331dl-accel",
  82                 .data = LIS331DL_ACCEL_DEV_NAME,
  83         },
  84         {
  85                 .compatible = "st,lis2dw12",
  86                 .data = LIS2DW12_ACCEL_DEV_NAME,
  87         },
  88         {
  89                 .compatible = "st,lis3dhh",
  90                 .data = LIS3DHH_ACCEL_DEV_NAME,
  91         },
  92         {
  93                 .compatible = "st,lis3de",
  94                 .data = LIS3DE_ACCEL_DEV_NAME,
  95         },
  96         {}
  97 };
  98 MODULE_DEVICE_TABLE(of, st_accel_of_match);
  99 #else
 100 #define st_accel_of_match       NULL
 101 #endif
 102
 103 static int st_accel_spi_probe(struct spi_device *spi)
 104 {
 105         struct iio_dev *indio_dev;
 106         struct st_sensor_data *adata;
 107         int err;
 108
 109         indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata));
 110         if (!indio_dev)
 111                 return -ENOMEM;
 112
 113         adata = iio_priv(indio_dev);
 114
 115         st_sensors_of_name_probe(&spi->dev, st_accel_of_match,
 116                                  spi->modalias, sizeof(spi->modalias));
 117         st_sensors_spi_configure(indio_dev, spi, adata);
 118
 119         err = st_accel_common_probe(indio_dev);
 120         if (err < 0)
 121                 return err;
 122
 123         return 0;
 124 }
 125
 126 static int st_accel_spi_remove(struct spi_device *spi)
 127 {
 128         st_accel_common_remove(spi_get_drvdata(spi));
 129
 130         return 0;
 131 }
 132
 133 static const struct spi_device_id st_accel_id_table[] = {
 134         { LIS3DH_ACCEL_DEV_NAME },
 135         { LSM330D_ACCEL_DEV_NAME },
 136         { LSM330DL_ACCEL_DEV_NAME },
 137         { LSM330DLC_ACCEL_DEV_NAME },
 138         { LIS331DLH_ACCEL_DEV_NAME },
 139         { LSM330_ACCEL_DEV_NAME },
 140         { LSM303AGR_ACCEL_DEV_NAME },
 141         { LIS2DH12_ACCEL_DEV_NAME },
 142         { LIS3L02DQ_ACCEL_DEV_NAME },
 143         { LNG2DM_ACCEL_DEV_NAME },
 144         { H3LIS331DL_ACCEL_DEV_NAME },
 145         { LIS331DL_ACCEL_DEV_NAME },
 146         { LIS3LV02DL_ACCEL_DEV_NAME },
 147         { LIS2DW12_ACCEL_DEV_NAME },
 148         { LIS3DHH_ACCEL_DEV_NAME },
 149         { LIS3DE_ACCEL_DEV_NAME },
 150         {},
 151 };
 152 MODULE_DEVICE_TABLE(spi, st_accel_id_table);
 153
 154 static struct spi_driver st_accel_driver = {
 155         .driver = {
 156                 .name = "st-accel-spi",
 157                 .of_match_table = of_match_ptr(st_accel_of_match),
 158         },
 159         .probe = st_accel_spi_probe,
 160         .remove = st_accel_spi_remove,
 161         .id_table = st_accel_id_table,
 162 };
 163 module_spi_driver(st_accel_driver);
 164
 165 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 166 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
 167 MODULE_LICENSE("GPL v2");