LXR linux/drivers/iio/magnetometer/rm3100-i2c.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Support for PNI RM3100 3-axis geomagnetic sensor on a i2c bus.
   4 *
   5 * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com>
   6 *
   7 * i2c slave address: 0x20 + SA1 << 1 + SA0.
   8 */
   9
  10#include <linux/i2c.h>
  11#include <linux/module.h>
  12
  13#include "rm3100.h"
  14
  15static const struct regmap_config rm3100_regmap_config = {
  16        .reg_bits = 8,
  17        .val_bits = 8,
  18
  19        .rd_table = &rm3100_readable_table,
  20        .wr_table = &rm3100_writable_table,
  21        .volatile_table = &rm3100_volatile_table,
  22
  23        .cache_type = REGCACHE_RBTREE,
  24};
  25
  26static int rm3100_probe(struct i2c_client *client)
  27{
  28        struct regmap *regmap;
  29
  30        regmap = devm_regmap_init_i2c(client, &rm3100_regmap_config);
  31        if (IS_ERR(regmap))
  32                return PTR_ERR(regmap);
  33
  34        return rm3100_common_probe(&client->dev, regmap, client->irq);
  35}
  36
  37static const struct of_device_id rm3100_dt_match[] = {
  38        { .compatible = "pni,rm3100", },
  39        { }
  40};
  41MODULE_DEVICE_TABLE(of, rm3100_dt_match);
  42
  43static struct i2c_driver rm3100_driver = {
  44        .driver = {
  45                .name = "rm3100-i2c",
  46                .of_match_table = rm3100_dt_match,
  47        },
  48        .probe_new = rm3100_probe,
  49};
  50module_i2c_driver(rm3100_driver);
  51
  52MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>");
  53MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver");
  54MODULE_LICENSE("GPL v2");
  55