1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * STMicroelectronics LSM9DS0 IMU driver
 4 *
 5 * Copyright (C) 2021, Intel Corporation
 6 *
 7 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
 8 */
 9
10#include <linux/array_size.h>
11#include <linux/dev_printk.h>
12#include <linux/err.h>
13#include <linux/module.h>
14#include <linux/regulator/consumer.h>
15
16#include <linux/iio/common/st_sensors.h>
17#include <linux/iio/iio.h>
18
19#include "st_lsm9ds0.h"
20
21static int st_lsm9ds0_probe_accel(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap)
22{
23	const struct st_sensor_settings *settings;
24	struct device *dev = lsm9ds0->dev;
25	struct st_sensor_data *data;
26
27	settings = st_accel_get_settings(lsm9ds0->name);
28	if (!settings)
29		return dev_err_probe(dev, -ENODEV, "device name %s not recognized.\n",
30				     lsm9ds0->name);
31
32	lsm9ds0->accel = devm_iio_device_alloc(dev, sizeof(*data));
33	if (!lsm9ds0->accel)
34		return -ENOMEM;
35
36	lsm9ds0->accel->name = lsm9ds0->name;
37
38	data = iio_priv(lsm9ds0->accel);
39	data->sensor_settings = (struct st_sensor_settings *)settings;
40	data->irq = lsm9ds0->irq;
41	data->regmap = regmap;
42
43	return st_accel_common_probe(lsm9ds0->accel);
44}
45
46static int st_lsm9ds0_probe_magn(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap)
47{
48	const struct st_sensor_settings *settings;
49	struct device *dev = lsm9ds0->dev;
50	struct st_sensor_data *data;
51
52	settings = st_magn_get_settings(lsm9ds0->name);
53	if (!settings)
54		return dev_err_probe(dev, -ENODEV, "device name %s not recognized.\n",
55				     lsm9ds0->name);
56
57	lsm9ds0->magn = devm_iio_device_alloc(dev, sizeof(*data));
58	if (!lsm9ds0->magn)
59		return -ENOMEM;
60
61	lsm9ds0->magn->name = lsm9ds0->name;
62
63	data = iio_priv(lsm9ds0->magn);
64	data->sensor_settings = (struct st_sensor_settings *)settings;
65	data->irq = lsm9ds0->irq;
66	data->regmap = regmap;
67
68	return st_magn_common_probe(lsm9ds0->magn);
69}
70
71int st_lsm9ds0_probe(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap)
72{
73	struct device *dev = lsm9ds0->dev;
74	static const char * const regulator_names[] = { "vdd", "vddio" };
75	int ret;
76
77	/* Regulators not mandatory, but if requested we should enable them. */
78	ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulator_names),
79					     regulator_names);
80	if (ret)
81		return dev_err_probe(dev, ret, "unable to enable Vdd supply\n");
82
83	/* Setup accelerometer device */
84	ret = st_lsm9ds0_probe_accel(lsm9ds0, regmap);
85	if (ret)
86		return ret;
87
88	/* Setup magnetometer device */
89	return st_lsm9ds0_probe_magn(lsm9ds0, regmap);
90}
91EXPORT_SYMBOL_NS_GPL(st_lsm9ds0_probe, IIO_ST_SENSORS);
92
93MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
94MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU core driver");
95MODULE_LICENSE("GPL v2");
96MODULE_IMPORT_NS(IIO_ST_SENSORS);