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 	return hmc5843_common_probe(&cli->dev,
62 			devm_regmap_init_i2c(cli, &hmc5843_i2c_regmap_config),
63 			id->driver_data, id->name);
64 }
65 
66 static int hmc5843_i2c_remove(struct i2c_client *client)
67 {
68 	return hmc5843_common_remove(&client->dev);
69 }
70 
71 static const struct i2c_device_id hmc5843_id[] = {
72 	{ "hmc5843", HMC5843_ID },
73 	{ "hmc5883", HMC5883_ID },
74 	{ "hmc5883l", HMC5883L_ID },
75 	{ "hmc5983", HMC5983_ID },
76 	{ }
77 };
78 MODULE_DEVICE_TABLE(i2c, hmc5843_id);
79 
80 static const struct of_device_id hmc5843_of_match[] = {
81 	{ .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
82 	{ .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
83 	{ .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
84 	{ .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
85 	{}
86 };
87 MODULE_DEVICE_TABLE(of, hmc5843_of_match);
88 
89 static struct i2c_driver hmc5843_driver = {
90 	.driver = {
91 		.name	= "hmc5843",
92 		.pm	= HMC5843_PM_OPS,
93 		.of_match_table = hmc5843_of_match,
94 	},
95 	.id_table	= hmc5843_id,
96 	.probe		= hmc5843_i2c_probe,
97 	.remove		= hmc5843_i2c_remove,
98 };
99 module_i2c_driver(hmc5843_driver);
100 
101 MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
102 MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
103 MODULE_LICENSE("GPL");
104