2 * i2c driver for hmc5843/5843/5883/5883l/5983
5 * Copyright (C) Josef Gajdusek <atx@atx.name>
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.
13 #include <linux/module.h>
14 #include <linux/i2c.h>
15 #include <linux/regmap.h>
16 #include <linux/iio/iio.h>
17 #include <linux/iio/triggered_buffer.h>
21 static const struct regmap_range hmc5843_readable_ranges[] = {
22 regmap_reg_range(0, HMC5843_ID_END),
25 static const struct regmap_access_table hmc5843_readable_table = {
26 .yes_ranges = hmc5843_readable_ranges,
27 .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges),
30 static const struct regmap_range hmc5843_writable_ranges[] = {
31 regmap_reg_range(0, HMC5843_MODE_REG),
34 static const struct regmap_access_table hmc5843_writable_table = {
35 .yes_ranges = hmc5843_writable_ranges,
36 .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges),
39 static const struct regmap_range hmc5843_volatile_ranges[] = {
40 regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG),
43 static const struct regmap_access_table hmc5843_volatile_table = {
44 .yes_ranges = hmc5843_volatile_ranges,
45 .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges),
48 static const struct regmap_config hmc5843_i2c_regmap_config = {
52 .rd_table = &hmc5843_readable_table,
53 .wr_table = &hmc5843_writable_table,
54 .volatile_table = &hmc5843_volatile_table,
56 .cache_type = REGCACHE_RBTREE,
59 static int hmc5843_i2c_probe(struct i2c_client *cli,
60 const struct i2c_device_id *id)
62 struct regmap *regmap = devm_regmap_init_i2c(cli,
63 &hmc5843_i2c_regmap_config);
65 return PTR_ERR(regmap);
67 return hmc5843_common_probe(&cli->dev,
69 id->driver_data, id->name);
72 static int hmc5843_i2c_remove(struct i2c_client *client)
74 return hmc5843_common_remove(&client->dev);
77 static const struct i2c_device_id hmc5843_id[] = {
78 { "hmc5843", HMC5843_ID },
79 { "hmc5883", HMC5883_ID },
80 { "hmc5883l", HMC5883L_ID },
81 { "hmc5983", HMC5983_ID },
84 MODULE_DEVICE_TABLE(i2c, hmc5843_id);
86 static const struct of_device_id hmc5843_of_match[] = {
87 { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
88 { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
89 { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
90 { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
93 MODULE_DEVICE_TABLE(of, hmc5843_of_match);
95 static struct i2c_driver hmc5843_driver = {
99 .of_match_table = hmc5843_of_match,
101 .id_table = hmc5843_id,
102 .probe = hmc5843_i2c_probe,
103 .remove = hmc5843_i2c_remove,
105 module_i2c_driver(hmc5843_driver);
107 MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
108 MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
109 MODULE_LICENSE("GPL");