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1// SPDX-License-Identifier: GPL-2.02/*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 = 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");55MODULE_IMPORT_NS(IIO_RM3100);56