xref: /openbmc/linux/drivers/iio/imu/fxos8700_i2c.c (revision 7cf15f42)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * FXOS8700 - NXP IMU, I2C bits
4  *
5  * 7-bit I2C slave address determined by SA1 and SA0 logic level
6  * inputs represented in the following table:
7  *      SA1  |  SA0  |  Slave Address
8  *      0    |  0    |  0x1E
9  *      0    |  1    |  0x1D
10  *      1    |  0    |  0x1C
11  *      1    |  1    |  0x1F
12  */
13 #include <linux/acpi.h>
14 #include <linux/i2c.h>
15 #include <linux/module.h>
16 #include <linux/mod_devicetable.h>
17 #include <linux/regmap.h>
18 
19 #include "fxos8700.h"
20 
fxos8700_i2c_probe(struct i2c_client * client)21 static int fxos8700_i2c_probe(struct i2c_client *client)
22 {
23 	const struct i2c_device_id *id = i2c_client_get_device_id(client);
24 	struct regmap *regmap;
25 	const char *name = NULL;
26 
27 	regmap = devm_regmap_init_i2c(client, &fxos8700_regmap_config);
28 	if (IS_ERR(regmap)) {
29 		dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
30 		return PTR_ERR(regmap);
31 	}
32 
33 	if (id)
34 		name = id->name;
35 
36 	return fxos8700_core_probe(&client->dev, regmap, name, false);
37 }
38 
39 static const struct i2c_device_id fxos8700_i2c_id[] = {
40 	{"fxos8700", 0},
41 	{ }
42 };
43 MODULE_DEVICE_TABLE(i2c, fxos8700_i2c_id);
44 
45 static const struct acpi_device_id fxos8700_acpi_match[] = {
46 	{"FXOS8700", 0},
47 	{ }
48 };
49 MODULE_DEVICE_TABLE(acpi, fxos8700_acpi_match);
50 
51 static const struct of_device_id fxos8700_of_match[] = {
52 	{ .compatible = "nxp,fxos8700" },
53 	{ }
54 };
55 MODULE_DEVICE_TABLE(of, fxos8700_of_match);
56 
57 static struct i2c_driver fxos8700_i2c_driver = {
58 	.driver = {
59 		.name                   = "fxos8700_i2c",
60 		.acpi_match_table       = ACPI_PTR(fxos8700_acpi_match),
61 		.of_match_table         = fxos8700_of_match,
62 	},
63 	.probe          = fxos8700_i2c_probe,
64 	.id_table       = fxos8700_i2c_id,
65 };
66 module_i2c_driver(fxos8700_i2c_driver);
67 
68 MODULE_AUTHOR("Robert Jones <rjones@gateworks.com>");
69 MODULE_DESCRIPTION("FXOS8700 I2C driver");
70 MODULE_LICENSE("GPL v2");
71