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[linux.git] / drivers / iio / accel / adxl355_i2c.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * ADXL355 3-Axis Digital Accelerometer I2C driver
4  *
5  * Copyright (c) 2021 Puranjay Mohan <[email protected]>
6  */
7
8 #include <linux/i2c.h>
9 #include <linux/module.h>
10 #include <linux/mod_devicetable.h>
11 #include <linux/regmap.h>
12
13 #include "adxl355.h"
14
15 static const struct regmap_config adxl355_i2c_regmap_config = {
16         .reg_bits = 8,
17         .val_bits = 8,
18         .max_register = 0x2F,
19         .rd_table = &adxl355_readable_regs_tbl,
20         .wr_table = &adxl355_writeable_regs_tbl,
21 };
22
23 static int adxl355_i2c_probe(struct i2c_client *client)
24 {
25         struct regmap *regmap;
26         const struct adxl355_chip_info *chip_data;
27         const struct i2c_device_id *adxl355;
28
29         chip_data = device_get_match_data(&client->dev);
30         if (!chip_data) {
31                 adxl355 = to_i2c_driver(client->dev.driver)->id_table;
32                 if (!adxl355)
33                         return -EINVAL;
34
35                 chip_data = (void *)i2c_match_id(adxl355, client)->driver_data;
36
37                 if (!chip_data)
38                         return -EINVAL;
39         }
40
41         regmap = devm_regmap_init_i2c(client, &adxl355_i2c_regmap_config);
42         if (IS_ERR(regmap)) {
43                 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
44                         PTR_ERR(regmap));
45
46                 return PTR_ERR(regmap);
47         }
48
49         return adxl355_core_probe(&client->dev, regmap, chip_data);
50 }
51
52 static const struct i2c_device_id adxl355_i2c_id[] = {
53         { "adxl355", (kernel_ulong_t)&adxl35x_chip_info[ADXL355] },
54         { "adxl359", (kernel_ulong_t)&adxl35x_chip_info[ADXL359] },
55         { }
56 };
57 MODULE_DEVICE_TABLE(i2c, adxl355_i2c_id);
58
59 static const struct of_device_id adxl355_of_match[] = {
60         { .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] },
61         { .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] },
62         { }
63 };
64 MODULE_DEVICE_TABLE(of, adxl355_of_match);
65
66 static struct i2c_driver adxl355_i2c_driver = {
67         .driver = {
68                 .name   = "adxl355_i2c",
69                 .of_match_table = adxl355_of_match,
70         },
71         .probe_new      = adxl355_i2c_probe,
72         .id_table       = adxl355_i2c_id,
73 };
74 module_i2c_driver(adxl355_i2c_driver);
75
76 MODULE_AUTHOR("Puranjay Mohan <[email protected]>");
77 MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer I2C driver");
78 MODULE_LICENSE("GPL v2");
79 MODULE_IMPORT_NS(IIO_ADXL355);
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