1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * i2c driver for hmc5843/5843/5883/5883l/5983
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Split from hmc5843.c
6*4882a593Smuzhiyun * Copyright (C) Josef Gajdusek <atx@atx.name>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/module.h>
10*4882a593Smuzhiyun #include <linux/i2c.h>
11*4882a593Smuzhiyun #include <linux/regmap.h>
12*4882a593Smuzhiyun #include <linux/iio/iio.h>
13*4882a593Smuzhiyun #include <linux/iio/triggered_buffer.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include "hmc5843.h"
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun static const struct regmap_range hmc5843_readable_ranges[] = {
18*4882a593Smuzhiyun regmap_reg_range(0, HMC5843_ID_END),
19*4882a593Smuzhiyun };
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun static const struct regmap_access_table hmc5843_readable_table = {
22*4882a593Smuzhiyun .yes_ranges = hmc5843_readable_ranges,
23*4882a593Smuzhiyun .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges),
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun static const struct regmap_range hmc5843_writable_ranges[] = {
27*4882a593Smuzhiyun regmap_reg_range(0, HMC5843_MODE_REG),
28*4882a593Smuzhiyun };
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun static const struct regmap_access_table hmc5843_writable_table = {
31*4882a593Smuzhiyun .yes_ranges = hmc5843_writable_ranges,
32*4882a593Smuzhiyun .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges),
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun static const struct regmap_range hmc5843_volatile_ranges[] = {
36*4882a593Smuzhiyun regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG),
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun static const struct regmap_access_table hmc5843_volatile_table = {
40*4882a593Smuzhiyun .yes_ranges = hmc5843_volatile_ranges,
41*4882a593Smuzhiyun .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges),
42*4882a593Smuzhiyun };
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun static const struct regmap_config hmc5843_i2c_regmap_config = {
45*4882a593Smuzhiyun .reg_bits = 8,
46*4882a593Smuzhiyun .val_bits = 8,
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun .rd_table = &hmc5843_readable_table,
49*4882a593Smuzhiyun .wr_table = &hmc5843_writable_table,
50*4882a593Smuzhiyun .volatile_table = &hmc5843_volatile_table,
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun .cache_type = REGCACHE_RBTREE,
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun
hmc5843_i2c_probe(struct i2c_client * cli,const struct i2c_device_id * id)55*4882a593Smuzhiyun static int hmc5843_i2c_probe(struct i2c_client *cli,
56*4882a593Smuzhiyun const struct i2c_device_id *id)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun struct regmap *regmap = devm_regmap_init_i2c(cli,
59*4882a593Smuzhiyun &hmc5843_i2c_regmap_config);
60*4882a593Smuzhiyun if (IS_ERR(regmap))
61*4882a593Smuzhiyun return PTR_ERR(regmap);
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun return hmc5843_common_probe(&cli->dev,
64*4882a593Smuzhiyun regmap,
65*4882a593Smuzhiyun id->driver_data, id->name);
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun
hmc5843_i2c_remove(struct i2c_client * client)68*4882a593Smuzhiyun static int hmc5843_i2c_remove(struct i2c_client *client)
69*4882a593Smuzhiyun {
70*4882a593Smuzhiyun return hmc5843_common_remove(&client->dev);
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun static const struct i2c_device_id hmc5843_id[] = {
74*4882a593Smuzhiyun { "hmc5843", HMC5843_ID },
75*4882a593Smuzhiyun { "hmc5883", HMC5883_ID },
76*4882a593Smuzhiyun { "hmc5883l", HMC5883L_ID },
77*4882a593Smuzhiyun { "hmc5983", HMC5983_ID },
78*4882a593Smuzhiyun { }
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, hmc5843_id);
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun static const struct of_device_id hmc5843_of_match[] = {
83*4882a593Smuzhiyun { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
84*4882a593Smuzhiyun { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
85*4882a593Smuzhiyun { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
86*4882a593Smuzhiyun { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
87*4882a593Smuzhiyun {}
88*4882a593Smuzhiyun };
89*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, hmc5843_of_match);
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun static struct i2c_driver hmc5843_driver = {
92*4882a593Smuzhiyun .driver = {
93*4882a593Smuzhiyun .name = "hmc5843",
94*4882a593Smuzhiyun .pm = HMC5843_PM_OPS,
95*4882a593Smuzhiyun .of_match_table = hmc5843_of_match,
96*4882a593Smuzhiyun },
97*4882a593Smuzhiyun .id_table = hmc5843_id,
98*4882a593Smuzhiyun .probe = hmc5843_i2c_probe,
99*4882a593Smuzhiyun .remove = hmc5843_i2c_remove,
100*4882a593Smuzhiyun };
101*4882a593Smuzhiyun module_i2c_driver(hmc5843_driver);
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
104*4882a593Smuzhiyun MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
105*4882a593Smuzhiyun MODULE_LICENSE("GPL");
106