drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c

   1 /*
   2  * STMicroelectronics st_lsm6dsx spi driver
   3  *
   4  * Copyright 2016 STMicroelectronics Inc.
   5  *
   6  * Lorenzo Bianconi <lorenzo.bianconi@st.com>
   7  * Denis Ciocca <denis.ciocca@st.com>
   8  *
   9  * Licensed under the GPL-2.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/spi/spi.h>
  15 #include <linux/slab.h>
  16 #include <linux/of.h>
  17 #include <linux/regmap.h>
  18
  19 #include "st_lsm6dsx.h"
  20
  21 static const struct regmap_config st_lsm6dsx_spi_regmap_config = {
  22         .reg_bits = 8,
  23         .val_bits = 8,
  24 };
  25
  26 static int st_lsm6dsx_spi_probe(struct spi_device *spi)
  27 {
  28         const struct spi_device_id *id = spi_get_device_id(spi);
  29         int hw_id = id->driver_data;
  30         struct regmap *regmap;
  31
  32         regmap = devm_regmap_init_spi(spi, &st_lsm6dsx_spi_regmap_config);
  33         if (IS_ERR(regmap)) {
  34                 dev_err(&spi->dev, "Failed to register spi regmap %d\n",
  35                         (int)PTR_ERR(regmap));
  36                 return PTR_ERR(regmap);
  37         }
  38
  39         return st_lsm6dsx_probe(&spi->dev, spi->irq,
  40                                 hw_id, id->name, regmap);
  41 }
  42
  43 static const struct of_device_id st_lsm6dsx_spi_of_match[] = {
  44         {
  45                 .compatible = "st,lsm6ds3",
  46                 .data = (void *)ST_LSM6DS3_ID,
  47         },
  48         {
  49                 .compatible = "st,lsm6ds3h",
  50                 .data = (void *)ST_LSM6DS3H_ID,
  51         },
  52         {
  53                 .compatible = "st,lsm6dsl",
  54                 .data = (void *)ST_LSM6DSL_ID,
  55         },
  56         {
  57                 .compatible = "st,lsm6dsm",
  58                 .data = (void *)ST_LSM6DSM_ID,
  59         },
  60         {},
  61 };
  62 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
  63
  64 static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
  65         { ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
  66         { ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
  67         { ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
  68         { ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
  69         {},
  70 };
  71 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
  72
  73 static struct spi_driver st_lsm6dsx_driver = {
  74         .driver = {
  75                 .name = "st_lsm6dsx_spi",
  76                 .pm = &st_lsm6dsx_pm_ops,
  77                 .of_match_table = of_match_ptr(st_lsm6dsx_spi_of_match),
  78         },
  79         .probe = st_lsm6dsx_spi_probe,
  80         .id_table = st_lsm6dsx_spi_id_table,
  81 };
  82 module_spi_driver(st_lsm6dsx_driver);
  83
  84 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
  85 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  86 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx spi driver");
  87 MODULE_LICENSE("GPL v2");