1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Support for I2C-interfaced Bosch BNO055 IMU.
4  *
5  * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia
6  * Electronic Design Laboratory
7  * Written by Andrea Merello <andrea.merello@iit.it>
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 "bno055.h"
16 
17 #define BNO055_I2C_XFER_BURST_BREAK_THRESHOLD 3
18 
19 static int bno055_i2c_probe(struct i2c_client *client)
20 {
21 	struct regmap *regmap;
22 
23 	regmap = devm_regmap_init_i2c(client, &bno055_regmap_config);
24 	if (IS_ERR(regmap))
25 		return dev_err_probe(&client->dev, PTR_ERR(regmap),
26 				     "Unable to init register map");
27 
28 	return bno055_probe(&client->dev, regmap,
29 			    BNO055_I2C_XFER_BURST_BREAK_THRESHOLD, true);
30 }
31 
32 static const struct i2c_device_id bno055_i2c_id[] = {
33 	{"bno055", 0},
34 	{ }
35 };
36 MODULE_DEVICE_TABLE(i2c, bno055_i2c_id);
37 
38 static const struct of_device_id __maybe_unused bno055_i2c_of_match[] = {
39 	{ .compatible = "bosch,bno055" },
40 	{ }
41 };
42 MODULE_DEVICE_TABLE(of, bno055_i2c_of_match);
43 
44 static struct i2c_driver bno055_driver = {
45 	.driver = {
46 		.name = "bno055-i2c",
47 		.of_match_table = bno055_i2c_of_match,
48 	},
49 	.probe_new = bno055_i2c_probe,
50 	.id_table = bno055_i2c_id,
51 };
52 module_i2c_driver(bno055_driver);
53 
54 MODULE_AUTHOR("Andrea Merello");
55 MODULE_DESCRIPTION("Bosch BNO055 I2C interface");
56 MODULE_IMPORT_NS(IIO_BNO055);
57 MODULE_LICENSE("GPL");
58