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 | |
17 | static 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 | }, |
25 | [ADXL313] = { |
26 | .reg_bits = 8, |
27 | .val_bits = 8, |
28 | .rd_table = &adxl313_readable_regs_table, |
29 | .wr_table = &adxl313_writable_regs_table, |
30 | .max_register = 0x39, |
31 | }, |
32 | [ADXL314] = { |
33 | .reg_bits = 8, |
34 | .val_bits = 8, |
35 | .rd_table = &adxl314_readable_regs_table, |
36 | .wr_table = &adxl314_writable_regs_table, |
37 | .max_register = 0x39, |
38 | }, |
39 | }; |
40 | |
41 | static const struct i2c_device_id adxl313_i2c_id[] = { |
42 | { .name = "adxl312" , .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] }, |
43 | { .name = "adxl313" , .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL313] }, |
44 | { .name = "adxl314" , .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL314] }, |
45 | { } |
46 | }; |
47 | |
48 | MODULE_DEVICE_TABLE(i2c, adxl313_i2c_id); |
49 | |
50 | static const struct of_device_id adxl313_of_match[] = { |
51 | { .compatible = "adi,adxl312" , .data = &adxl31x_chip_info[ADXL312] }, |
52 | { .compatible = "adi,adxl313" , .data = &adxl31x_chip_info[ADXL313] }, |
53 | { .compatible = "adi,adxl314" , .data = &adxl31x_chip_info[ADXL314] }, |
54 | { } |
55 | }; |
56 | |
57 | MODULE_DEVICE_TABLE(of, adxl313_of_match); |
58 | |
59 | static int adxl313_i2c_probe(struct i2c_client *client) |
60 | { |
61 | const struct adxl313_chip_info *chip_data; |
62 | struct regmap *regmap; |
63 | |
64 | /* |
65 | * Retrieves device specific data as a pointer to a |
66 | * adxl313_chip_info structure |
67 | */ |
68 | chip_data = i2c_get_match_data(client); |
69 | |
70 | regmap = devm_regmap_init_i2c(client, |
71 | &adxl31x_i2c_regmap_config[chip_data->type]); |
72 | if (IS_ERR(ptr: regmap)) { |
73 | dev_err(&client->dev, "Error initializing i2c regmap: %ld\n" , |
74 | PTR_ERR(regmap)); |
75 | return PTR_ERR(ptr: regmap); |
76 | } |
77 | |
78 | return adxl313_core_probe(dev: &client->dev, regmap, chip_info: chip_data, NULL); |
79 | } |
80 | |
81 | static struct i2c_driver adxl313_i2c_driver = { |
82 | .driver = { |
83 | .name = "adxl313_i2c" , |
84 | .of_match_table = adxl313_of_match, |
85 | }, |
86 | .probe = adxl313_i2c_probe, |
87 | .id_table = adxl313_i2c_id, |
88 | }; |
89 | |
90 | module_i2c_driver(adxl313_i2c_driver); |
91 | |
92 | MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>" ); |
93 | MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer I2C driver" ); |
94 | MODULE_LICENSE("GPL v2" ); |
95 | MODULE_IMPORT_NS(IIO_ADXL313); |
96 | |