bmi160_i2c.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * BMI160 - Bosch IMU, I2C bits
 4 *
 5 * Copyright (c) 2016, Intel Corporation.
 6 *
 7 * 7-bit I2C slave address is:
 8 *      - 0x68 if SDO is pulled to GND
 9 *      - 0x69 if SDO is pulled to VDDIO
10 */
11#include <linux/i2c.h>
12#include <linux/mod_devicetable.h>
13#include <linux/module.h>
14#include <linux/pm.h>
15#include <linux/regmap.h>
16
17#include "bmi160.h"
18
19static int bmi160_i2c_probe(struct i2c_client *client)
20{
21	const struct i2c_device_id *id = i2c_client_get_device_id(client);
22	struct regmap *regmap;
23	const char *name;
24
25	regmap = devm_regmap_init_i2c(client, &bmi160_regmap_config);
26	if (IS_ERR(regmap)) {
27		dev_err(&client->dev, "Failed to register i2c regmap: %pe\n",
28			regmap);
29		return PTR_ERR(regmap);
30	}
31
32	if (id)
33		name = id->name;
34	else
35		name = dev_name(&client->dev);
36
37	return bmi160_core_probe(&client->dev, regmap, name, false);
38}
39
40static const struct i2c_device_id bmi160_i2c_id[] = {
41	{ "bmi120" },
42	{ "bmi160" },
43	{ }
44};
45MODULE_DEVICE_TABLE(i2c, bmi160_i2c_id);
46
47static const struct acpi_device_id bmi160_acpi_match[] = {
48	/*
49	 * FIRMWARE BUG WORKAROUND
50	 * Some manufacturers like GPD, Lenovo or Aya used the incorrect
51	 * ID "10EC5280" for bmi160 in their DSDT. A fixed firmware is not
52	 * available as of Feb 2024 after trying to work with OEMs, and
53	 * this is not expected to change anymore since at least some of
54	 * the affected devices are from 2021/2022.
55	 */
56	{"10EC5280", 0},
57	{"BMI0120", 0},
58	{"BMI0160", 0},
59	{ }
60};
61MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
62
63static const struct of_device_id bmi160_of_match[] = {
64	{ .compatible = "bosch,bmi120" },
65	{ .compatible = "bosch,bmi160" },
66	{ }
67};
68MODULE_DEVICE_TABLE(of, bmi160_of_match);
69
70static struct i2c_driver bmi160_i2c_driver = {
71	.driver = {
72		.name			= "bmi160_i2c",
73		.pm			= pm_ptr(&bmi160_core_pm_ops),
74		.acpi_match_table	= bmi160_acpi_match,
75		.of_match_table		= bmi160_of_match,
76	},
77	.probe		= bmi160_i2c_probe,
78	.id_table	= bmi160_i2c_id,
79};
80module_i2c_driver(bmi160_i2c_driver);
81
82MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
83MODULE_DESCRIPTION("BMI160 I2C driver");
84MODULE_LICENSE("GPL v2");
85MODULE_IMPORT_NS("IIO_BMI160");