1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * STMicroelectronics magnetometers driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2012-2013 STMicroelectronics Inc.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Denis Ciocca <denis.ciocca@st.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/kernel.h>
11*4882a593Smuzhiyun #include <linux/module.h>
12*4882a593Smuzhiyun #include <linux/slab.h>
13*4882a593Smuzhiyun #include <linux/i2c.h>
14*4882a593Smuzhiyun #include <linux/iio/iio.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <linux/iio/common/st_sensors.h>
17*4882a593Smuzhiyun #include <linux/iio/common/st_sensors_i2c.h>
18*4882a593Smuzhiyun #include "st_magn.h"
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun static const struct of_device_id st_magn_of_match[] = {
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun .compatible = "st,lsm303dlh-magn",
23*4882a593Smuzhiyun .data = LSM303DLH_MAGN_DEV_NAME,
24*4882a593Smuzhiyun },
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun .compatible = "st,lsm303dlhc-magn",
27*4882a593Smuzhiyun .data = LSM303DLHC_MAGN_DEV_NAME,
28*4882a593Smuzhiyun },
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun .compatible = "st,lsm303dlm-magn",
31*4882a593Smuzhiyun .data = LSM303DLM_MAGN_DEV_NAME,
32*4882a593Smuzhiyun },
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun .compatible = "st,lis3mdl-magn",
35*4882a593Smuzhiyun .data = LIS3MDL_MAGN_DEV_NAME,
36*4882a593Smuzhiyun },
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun .compatible = "st,lsm303agr-magn",
39*4882a593Smuzhiyun .data = LSM303AGR_MAGN_DEV_NAME,
40*4882a593Smuzhiyun },
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun .compatible = "st,lis2mdl",
43*4882a593Smuzhiyun .data = LIS2MDL_MAGN_DEV_NAME,
44*4882a593Smuzhiyun },
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun .compatible = "st,lsm9ds1-magn",
47*4882a593Smuzhiyun .data = LSM9DS1_MAGN_DEV_NAME,
48*4882a593Smuzhiyun },
49*4882a593Smuzhiyun {},
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, st_magn_of_match);
52*4882a593Smuzhiyun
st_magn_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)53*4882a593Smuzhiyun static int st_magn_i2c_probe(struct i2c_client *client,
54*4882a593Smuzhiyun const struct i2c_device_id *id)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun const struct st_sensor_settings *settings;
57*4882a593Smuzhiyun struct st_sensor_data *mdata;
58*4882a593Smuzhiyun struct iio_dev *indio_dev;
59*4882a593Smuzhiyun int err;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun settings = st_magn_get_settings(client->name);
64*4882a593Smuzhiyun if (!settings) {
65*4882a593Smuzhiyun dev_err(&client->dev, "device name %s not recognized.\n",
66*4882a593Smuzhiyun client->name);
67*4882a593Smuzhiyun return -ENODEV;
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
71*4882a593Smuzhiyun if (!indio_dev)
72*4882a593Smuzhiyun return -ENOMEM;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun mdata = iio_priv(indio_dev);
75*4882a593Smuzhiyun mdata->sensor_settings = (struct st_sensor_settings *)settings;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun err = st_sensors_i2c_configure(indio_dev, client);
78*4882a593Smuzhiyun if (err < 0)
79*4882a593Smuzhiyun return err;
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun err = st_sensors_power_enable(indio_dev);
82*4882a593Smuzhiyun if (err)
83*4882a593Smuzhiyun return err;
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun err = st_magn_common_probe(indio_dev);
86*4882a593Smuzhiyun if (err < 0)
87*4882a593Smuzhiyun goto st_magn_power_off;
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun return 0;
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun st_magn_power_off:
92*4882a593Smuzhiyun st_sensors_power_disable(indio_dev);
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun return err;
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun
st_magn_i2c_remove(struct i2c_client * client)97*4882a593Smuzhiyun static int st_magn_i2c_remove(struct i2c_client *client)
98*4882a593Smuzhiyun {
99*4882a593Smuzhiyun struct iio_dev *indio_dev = i2c_get_clientdata(client);
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun st_magn_common_remove(indio_dev);
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun st_sensors_power_disable(indio_dev);
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun return 0;
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun static const struct i2c_device_id st_magn_id_table[] = {
109*4882a593Smuzhiyun { LSM303DLH_MAGN_DEV_NAME },
110*4882a593Smuzhiyun { LSM303DLHC_MAGN_DEV_NAME },
111*4882a593Smuzhiyun { LSM303DLM_MAGN_DEV_NAME },
112*4882a593Smuzhiyun { LIS3MDL_MAGN_DEV_NAME },
113*4882a593Smuzhiyun { LSM303AGR_MAGN_DEV_NAME },
114*4882a593Smuzhiyun { LIS2MDL_MAGN_DEV_NAME },
115*4882a593Smuzhiyun { LSM9DS1_MAGN_DEV_NAME },
116*4882a593Smuzhiyun {},
117*4882a593Smuzhiyun };
118*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
119*4882a593Smuzhiyun
120*4882a593Smuzhiyun static struct i2c_driver st_magn_driver = {
121*4882a593Smuzhiyun .driver = {
122*4882a593Smuzhiyun .name = "st-magn-i2c",
123*4882a593Smuzhiyun .of_match_table = st_magn_of_match,
124*4882a593Smuzhiyun },
125*4882a593Smuzhiyun .probe = st_magn_i2c_probe,
126*4882a593Smuzhiyun .remove = st_magn_i2c_remove,
127*4882a593Smuzhiyun .id_table = st_magn_id_table,
128*4882a593Smuzhiyun };
129*4882a593Smuzhiyun module_i2c_driver(st_magn_driver);
130*4882a593Smuzhiyun
131*4882a593Smuzhiyun MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
132*4882a593Smuzhiyun MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
133*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
134