1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * i2c driver for hmc5843/5843/5883/5883l/5983 |
4 | * |
5 | * Split from hmc5843.c |
6 | * Copyright (C) Josef Gajdusek <atx@atx.name> |
7 | */ |
8 | |
9 | #include <linux/module.h> |
10 | #include <linux/i2c.h> |
11 | #include <linux/regmap.h> |
12 | #include <linux/iio/iio.h> |
13 | #include <linux/iio/triggered_buffer.h> |
14 | |
15 | #include "hmc5843.h" |
16 | |
17 | static const struct regmap_range hmc5843_readable_ranges[] = { |
18 | regmap_reg_range(0, HMC5843_ID_END), |
19 | }; |
20 | |
21 | static const struct regmap_access_table hmc5843_readable_table = { |
22 | .yes_ranges = hmc5843_readable_ranges, |
23 | .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), |
24 | }; |
25 | |
26 | static const struct regmap_range hmc5843_writable_ranges[] = { |
27 | regmap_reg_range(0, HMC5843_MODE_REG), |
28 | }; |
29 | |
30 | static const struct regmap_access_table hmc5843_writable_table = { |
31 | .yes_ranges = hmc5843_writable_ranges, |
32 | .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), |
33 | }; |
34 | |
35 | static const struct regmap_range hmc5843_volatile_ranges[] = { |
36 | regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), |
37 | }; |
38 | |
39 | static const struct regmap_access_table hmc5843_volatile_table = { |
40 | .yes_ranges = hmc5843_volatile_ranges, |
41 | .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), |
42 | }; |
43 | |
44 | static const struct regmap_config hmc5843_i2c_regmap_config = { |
45 | .reg_bits = 8, |
46 | .val_bits = 8, |
47 | |
48 | .rd_table = &hmc5843_readable_table, |
49 | .wr_table = &hmc5843_writable_table, |
50 | .volatile_table = &hmc5843_volatile_table, |
51 | |
52 | .cache_type = REGCACHE_RBTREE, |
53 | }; |
54 | |
55 | static int hmc5843_i2c_probe(struct i2c_client *cli) |
56 | { |
57 | const struct i2c_device_id *id = i2c_client_get_device_id(client: cli); |
58 | struct regmap *regmap = devm_regmap_init_i2c(cli, |
59 | &hmc5843_i2c_regmap_config); |
60 | if (IS_ERR(ptr: regmap)) |
61 | return PTR_ERR(ptr: regmap); |
62 | |
63 | return hmc5843_common_probe(dev: &cli->dev, |
64 | regmap, |
65 | id: id->driver_data, name: id->name); |
66 | } |
67 | |
68 | static void hmc5843_i2c_remove(struct i2c_client *client) |
69 | { |
70 | hmc5843_common_remove(dev: &client->dev); |
71 | } |
72 | |
73 | static const struct i2c_device_id hmc5843_id[] = { |
74 | { "hmc5843" , HMC5843_ID }, |
75 | { "hmc5883" , HMC5883_ID }, |
76 | { "hmc5883l" , HMC5883L_ID }, |
77 | { "hmc5983" , HMC5983_ID }, |
78 | { } |
79 | }; |
80 | MODULE_DEVICE_TABLE(i2c, hmc5843_id); |
81 | |
82 | static const struct of_device_id hmc5843_of_match[] = { |
83 | { .compatible = "honeywell,hmc5843" , .data = (void *)HMC5843_ID }, |
84 | { .compatible = "honeywell,hmc5883" , .data = (void *)HMC5883_ID }, |
85 | { .compatible = "honeywell,hmc5883l" , .data = (void *)HMC5883L_ID }, |
86 | { .compatible = "honeywell,hmc5983" , .data = (void *)HMC5983_ID }, |
87 | {} |
88 | }; |
89 | MODULE_DEVICE_TABLE(of, hmc5843_of_match); |
90 | |
91 | static struct i2c_driver hmc5843_driver = { |
92 | .driver = { |
93 | .name = "hmc5843" , |
94 | .pm = pm_sleep_ptr(&hmc5843_pm_ops), |
95 | .of_match_table = hmc5843_of_match, |
96 | }, |
97 | .id_table = hmc5843_id, |
98 | .probe = hmc5843_i2c_probe, |
99 | .remove = hmc5843_i2c_remove, |
100 | }; |
101 | module_i2c_driver(hmc5843_driver); |
102 | |
103 | MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>" ); |
104 | MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver" ); |
105 | MODULE_LICENSE("GPL" ); |
106 | MODULE_IMPORT_NS(IIO_HMC5843); |
107 | |