1 /* 2 * i2c driver for hmc5843/5843/5883/5883l/5983 3 * 4 * Split from hmc5843.c 5 * Copyright (C) Josef Gajdusek <atx@atx.name> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #include <linux/module.h> 13 #include <linux/i2c.h> 14 #include <linux/regmap.h> 15 #include <linux/iio/iio.h> 16 #include <linux/iio/triggered_buffer.h> 17 18 #include "hmc5843.h" 19 20 static const struct regmap_range hmc5843_readable_ranges[] = { 21 regmap_reg_range(0, HMC5843_ID_END), 22 }; 23 24 static const struct regmap_access_table hmc5843_readable_table = { 25 .yes_ranges = hmc5843_readable_ranges, 26 .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), 27 }; 28 29 static const struct regmap_range hmc5843_writable_ranges[] = { 30 regmap_reg_range(0, HMC5843_MODE_REG), 31 }; 32 33 static const struct regmap_access_table hmc5843_writable_table = { 34 .yes_ranges = hmc5843_writable_ranges, 35 .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), 36 }; 37 38 static const struct regmap_range hmc5843_volatile_ranges[] = { 39 regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), 40 }; 41 42 static const struct regmap_access_table hmc5843_volatile_table = { 43 .yes_ranges = hmc5843_volatile_ranges, 44 .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), 45 }; 46 47 static const struct regmap_config hmc5843_i2c_regmap_config = { 48 .reg_bits = 8, 49 .val_bits = 8, 50 51 .rd_table = &hmc5843_readable_table, 52 .wr_table = &hmc5843_writable_table, 53 .volatile_table = &hmc5843_volatile_table, 54 55 .cache_type = REGCACHE_RBTREE, 56 }; 57 58 static int hmc5843_i2c_probe(struct i2c_client *cli, 59 const struct i2c_device_id *id) 60 { 61 struct regmap *regmap = devm_regmap_init_i2c(cli, 62 &hmc5843_i2c_regmap_config); 63 if (IS_ERR(regmap)) 64 return PTR_ERR(regmap); 65 66 return hmc5843_common_probe(&cli->dev, 67 regmap, 68 id->driver_data, id->name); 69 } 70 71 static int hmc5843_i2c_remove(struct i2c_client *client) 72 { 73 return hmc5843_common_remove(&client->dev); 74 } 75 76 static const struct i2c_device_id hmc5843_id[] = { 77 { "hmc5843", HMC5843_ID }, 78 { "hmc5883", HMC5883_ID }, 79 { "hmc5883l", HMC5883L_ID }, 80 { "hmc5983", HMC5983_ID }, 81 { } 82 }; 83 MODULE_DEVICE_TABLE(i2c, hmc5843_id); 84 85 static const struct of_device_id hmc5843_of_match[] = { 86 { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID }, 87 { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID }, 88 { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID }, 89 { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID }, 90 {} 91 }; 92 MODULE_DEVICE_TABLE(of, hmc5843_of_match); 93 94 static struct i2c_driver hmc5843_driver = { 95 .driver = { 96 .name = "hmc5843", 97 .pm = HMC5843_PM_OPS, 98 .of_match_table = hmc5843_of_match, 99 }, 100 .id_table = hmc5843_id, 101 .probe = hmc5843_i2c_probe, 102 .remove = hmc5843_i2c_remove, 103 }; 104 module_i2c_driver(hmc5843_driver); 105 106 MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>"); 107 MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver"); 108 MODULE_LICENSE("GPL"); 109