18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Support for PNI RM3100 3-axis geomagnetic sensor on a i2c bus. 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> 68c2ecf20Sopenharmony_ci * 78c2ecf20Sopenharmony_ci * i2c slave address: 0x20 + SA1 << 1 + SA0. 88c2ecf20Sopenharmony_ci */ 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#include <linux/i2c.h> 118c2ecf20Sopenharmony_ci#include <linux/module.h> 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#include "rm3100.h" 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_cistatic const struct regmap_config rm3100_regmap_config = { 168c2ecf20Sopenharmony_ci .reg_bits = 8, 178c2ecf20Sopenharmony_ci .val_bits = 8, 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci .rd_table = &rm3100_readable_table, 208c2ecf20Sopenharmony_ci .wr_table = &rm3100_writable_table, 218c2ecf20Sopenharmony_ci .volatile_table = &rm3100_volatile_table, 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci .cache_type = REGCACHE_RBTREE, 248c2ecf20Sopenharmony_ci}; 258c2ecf20Sopenharmony_ci 268c2ecf20Sopenharmony_cistatic int rm3100_probe(struct i2c_client *client) 278c2ecf20Sopenharmony_ci{ 288c2ecf20Sopenharmony_ci struct regmap *regmap; 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci regmap = devm_regmap_init_i2c(client, &rm3100_regmap_config); 318c2ecf20Sopenharmony_ci if (IS_ERR(regmap)) 328c2ecf20Sopenharmony_ci return PTR_ERR(regmap); 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci return rm3100_common_probe(&client->dev, regmap, client->irq); 358c2ecf20Sopenharmony_ci} 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_cistatic const struct of_device_id rm3100_dt_match[] = { 388c2ecf20Sopenharmony_ci { .compatible = "pni,rm3100", }, 398c2ecf20Sopenharmony_ci { } 408c2ecf20Sopenharmony_ci}; 418c2ecf20Sopenharmony_ciMODULE_DEVICE_TABLE(of, rm3100_dt_match); 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_cistatic struct i2c_driver rm3100_driver = { 448c2ecf20Sopenharmony_ci .driver = { 458c2ecf20Sopenharmony_ci .name = "rm3100-i2c", 468c2ecf20Sopenharmony_ci .of_match_table = rm3100_dt_match, 478c2ecf20Sopenharmony_ci }, 488c2ecf20Sopenharmony_ci .probe_new = rm3100_probe, 498c2ecf20Sopenharmony_ci}; 508c2ecf20Sopenharmony_cimodule_i2c_driver(rm3100_driver); 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_ciMODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>"); 538c2ecf20Sopenharmony_ciMODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver"); 548c2ecf20Sopenharmony_ciMODULE_LICENSE("GPL v2"); 55