1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * STMicroelectronics magnetometers driver
4  *
5  * Copyright 2012-2013 STMicroelectronics Inc.
6  *
7  * Denis Ciocca <denis.ciocca@st.com>
8  */
9 
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/mod_devicetable.h>
13 #include <linux/i2c.h>
14 #include <linux/iio/iio.h>
15 
16 #include <linux/iio/common/st_sensors.h>
17 #include <linux/iio/common/st_sensors_i2c.h>
18 #include "st_magn.h"
19 
20 static const struct of_device_id st_magn_of_match[] = {
21 	{
22 		.compatible = "st,lsm303dlh-magn",
23 		.data = LSM303DLH_MAGN_DEV_NAME,
24 	},
25 	{
26 		.compatible = "st,lsm303dlhc-magn",
27 		.data = LSM303DLHC_MAGN_DEV_NAME,
28 	},
29 	{
30 		.compatible = "st,lsm303dlm-magn",
31 		.data = LSM303DLM_MAGN_DEV_NAME,
32 	},
33 	{
34 		.compatible = "st,lis3mdl-magn",
35 		.data = LIS3MDL_MAGN_DEV_NAME,
36 	},
37 	{
38 		.compatible = "st,lsm303agr-magn",
39 		.data = LSM303AGR_MAGN_DEV_NAME,
40 	},
41 	{
42 		.compatible = "st,lis2mdl",
43 		.data = LIS2MDL_MAGN_DEV_NAME,
44 	},
45 	{
46 		.compatible = "st,lsm9ds1-magn",
47 		.data = LSM9DS1_MAGN_DEV_NAME,
48 	},
49 	{
50 		.compatible = "st,iis2mdc",
51 		.data = IIS2MDC_MAGN_DEV_NAME,
52 	},
53 	{
54 		.compatible = "st,lsm303c-magn",
55 		.data = LSM303C_MAGN_DEV_NAME,
56 	},
57 	{},
58 };
59 MODULE_DEVICE_TABLE(of, st_magn_of_match);
60 
st_magn_i2c_probe(struct i2c_client * client)61 static int st_magn_i2c_probe(struct i2c_client *client)
62 {
63 	const struct st_sensor_settings *settings;
64 	struct st_sensor_data *mdata;
65 	struct iio_dev *indio_dev;
66 	int err;
67 
68 	st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
69 
70 	settings = st_magn_get_settings(client->name);
71 	if (!settings) {
72 		dev_err(&client->dev, "device name %s not recognized.\n",
73 			client->name);
74 		return -ENODEV;
75 	}
76 
77 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
78 	if (!indio_dev)
79 		return -ENOMEM;
80 
81 	mdata = iio_priv(indio_dev);
82 	mdata->sensor_settings = (struct st_sensor_settings *)settings;
83 
84 	err = st_sensors_i2c_configure(indio_dev, client);
85 	if (err < 0)
86 		return err;
87 
88 	err = st_sensors_power_enable(indio_dev);
89 	if (err)
90 		return err;
91 
92 	return st_magn_common_probe(indio_dev);
93 }
94 
95 static const struct i2c_device_id st_magn_id_table[] = {
96 	{ LSM303DLH_MAGN_DEV_NAME },
97 	{ LSM303DLHC_MAGN_DEV_NAME },
98 	{ LSM303DLM_MAGN_DEV_NAME },
99 	{ LIS3MDL_MAGN_DEV_NAME },
100 	{ LSM303AGR_MAGN_DEV_NAME },
101 	{ LIS2MDL_MAGN_DEV_NAME },
102 	{ LSM9DS1_MAGN_DEV_NAME },
103 	{ IIS2MDC_MAGN_DEV_NAME },
104 	{ LSM303C_MAGN_DEV_NAME },
105 	{},
106 };
107 MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
108 
109 static struct i2c_driver st_magn_driver = {
110 	.driver = {
111 		.name = "st-magn-i2c",
112 		.of_match_table = st_magn_of_match,
113 	},
114 	.probe_new = st_magn_i2c_probe,
115 	.id_table = st_magn_id_table,
116 };
117 module_i2c_driver(st_magn_driver);
118 
119 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
120 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
121 MODULE_LICENSE("GPL v2");
122 MODULE_IMPORT_NS(IIO_ST_SENSORS);
123