162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Support for PNI RM3100 3-axis geomagnetic sensor on a i2c bus. 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> 662306a36Sopenharmony_ci * 762306a36Sopenharmony_ci * i2c slave address: 0x20 + SA1 << 1 + SA0. 862306a36Sopenharmony_ci */ 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#include <linux/i2c.h> 1162306a36Sopenharmony_ci#include <linux/module.h> 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#include "rm3100.h" 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cistatic const struct regmap_config rm3100_regmap_config = { 1662306a36Sopenharmony_ci .reg_bits = 8, 1762306a36Sopenharmony_ci .val_bits = 8, 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci .rd_table = &rm3100_readable_table, 2062306a36Sopenharmony_ci .wr_table = &rm3100_writable_table, 2162306a36Sopenharmony_ci .volatile_table = &rm3100_volatile_table, 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci .cache_type = REGCACHE_RBTREE, 2462306a36Sopenharmony_ci}; 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_cistatic int rm3100_probe(struct i2c_client *client) 2762306a36Sopenharmony_ci{ 2862306a36Sopenharmony_ci struct regmap *regmap; 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci regmap = devm_regmap_init_i2c(client, &rm3100_regmap_config); 3162306a36Sopenharmony_ci if (IS_ERR(regmap)) 3262306a36Sopenharmony_ci return PTR_ERR(regmap); 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci return rm3100_common_probe(&client->dev, regmap, client->irq); 3562306a36Sopenharmony_ci} 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_cistatic const struct of_device_id rm3100_dt_match[] = { 3862306a36Sopenharmony_ci { .compatible = "pni,rm3100", }, 3962306a36Sopenharmony_ci { } 4062306a36Sopenharmony_ci}; 4162306a36Sopenharmony_ciMODULE_DEVICE_TABLE(of, rm3100_dt_match); 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_cistatic struct i2c_driver rm3100_driver = { 4462306a36Sopenharmony_ci .driver = { 4562306a36Sopenharmony_ci .name = "rm3100-i2c", 4662306a36Sopenharmony_ci .of_match_table = rm3100_dt_match, 4762306a36Sopenharmony_ci }, 4862306a36Sopenharmony_ci .probe = rm3100_probe, 4962306a36Sopenharmony_ci}; 5062306a36Sopenharmony_cimodule_i2c_driver(rm3100_driver); 5162306a36Sopenharmony_ci 5262306a36Sopenharmony_ciMODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>"); 5362306a36Sopenharmony_ciMODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver"); 5462306a36Sopenharmony_ciMODULE_LICENSE("GPL v2"); 5562306a36Sopenharmony_ciMODULE_IMPORT_NS(IIO_RM3100); 56