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 * ADXL313 3-Axis Digital Accelerometer
4 *
5 * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
6 *
7 * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf
8 */
9
10#include <linux/i2c.h>
11#include <linux/mod_devicetable.h>
12#include <linux/module.h>
13#include <linux/regmap.h>
14
15#include "adxl313.h"
16
17static const struct regmap_config adxl31x_i2c_regmap_config[] = {
18 [ADXL312] = {
19 .reg_bits = 8,
20 .val_bits = 8,
21 .rd_table = &adxl312_readable_regs_table,
22 .wr_table = &adxl312_writable_regs_table,
23 .max_register = 0x39,
24 .volatile_reg = adxl313_is_volatile_reg,
25 .cache_type = REGCACHE_MAPLE,
26 },
27 [ADXL313] = {
28 .reg_bits = 8,
29 .val_bits = 8,
30 .rd_table = &adxl313_readable_regs_table,
31 .wr_table = &adxl313_writable_regs_table,
32 .max_register = 0x39,
33 .volatile_reg = adxl313_is_volatile_reg,
34 .cache_type = REGCACHE_MAPLE,
35 },
36 [ADXL314] = {
37 .reg_bits = 8,
38 .val_bits = 8,
39 .rd_table = &adxl314_readable_regs_table,
40 .wr_table = &adxl314_writable_regs_table,
41 .max_register = 0x39,
42 .volatile_reg = adxl313_is_volatile_reg,
43 .cache_type = REGCACHE_MAPLE,
44 },
45};
46
47static const struct i2c_device_id adxl313_i2c_id[] = {
48 { .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
49 { .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL313] },
50 { .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL314] },
51 { }
52};
53
54MODULE_DEVICE_TABLE(i2c, adxl313_i2c_id);
55
56static const struct of_device_id adxl313_of_match[] = {
57 { .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] },
58 { .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] },
59 { .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] },
60 { }
61};
62
63MODULE_DEVICE_TABLE(of, adxl313_of_match);
64
65static int adxl313_i2c_probe(struct i2c_client *client)
66{
67 const struct adxl313_chip_info *chip_data;
68 struct regmap *regmap;
69
70 /*
71 * Retrieves device specific data as a pointer to a
72 * adxl313_chip_info structure
73 */
74 chip_data = i2c_get_match_data(client);
75
76 regmap = devm_regmap_init_i2c(client,
77 &adxl31x_i2c_regmap_config[chip_data->type]);
78 if (IS_ERR(regmap)) {
79 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
80 PTR_ERR(regmap));
81 return PTR_ERR(regmap);
82 }
83
84 return adxl313_core_probe(&client->dev, regmap, chip_data, NULL);
85}
86
87static struct i2c_driver adxl313_i2c_driver = {
88 .driver = {
89 .name = "adxl313_i2c",
90 .of_match_table = adxl313_of_match,
91 },
92 .probe = adxl313_i2c_probe,
93 .id_table = adxl313_i2c_id,
94};
95
96module_i2c_driver(adxl313_i2c_driver);
97
98MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>");
99MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer I2C driver");
100MODULE_LICENSE("GPL v2");
101MODULE_IMPORT_NS("IIO_ADXL313");