linux/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
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   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
  21static const struct regmap_config st_lsm6dsx_spi_regmap_config = {
  22        .reg_bits = 8,
  23        .val_bits = 8,
  24};
  25
  26static 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
  43static 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                .compatible = "st,ism330dlc",
  62                .data = (void *)ST_ISM330DLC_ID,
  63        },
  64        {},
  65};
  66MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
  67
  68static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
  69        { ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
  70        { ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
  71        { ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
  72        { ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
  73        { ST_ISM330DLC_DEV_NAME, ST_ISM330DLC_ID },
  74        {},
  75};
  76MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
  77
  78static struct spi_driver st_lsm6dsx_driver = {
  79        .driver = {
  80                .name = "st_lsm6dsx_spi",
  81                .pm = &st_lsm6dsx_pm_ops,
  82                .of_match_table = of_match_ptr(st_lsm6dsx_spi_of_match),
  83        },
  84        .probe = st_lsm6dsx_spi_probe,
  85        .id_table = st_lsm6dsx_spi_id_table,
  86};
  87module_spi_driver(st_lsm6dsx_driver);
  88
  89MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
  90MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  91MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx spi driver");
  92MODULE_LICENSE("GPL v2");
  93