tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * ADXL355 3-Axis Digital Accelerometer I2C driver
4 *
5 * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
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
15static 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
23static 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
52static 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};
57MODULE_DEVICE_TABLE(i2c, adxl355_i2c_id);
58
59static 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};
64MODULE_DEVICE_TABLE(of, adxl355_of_match);
65
66static 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};
74module_i2c_driver(adxl355_i2c_driver);
75
76MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
77MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer I2C driver");
78MODULE_LICENSE("GPL v2");
79MODULE_IMPORT_NS(IIO_ADXL355);