1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * STMicroelectronics pressures driver
4 *
5 * Copyright 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/spi/spi.h>
14#include <linux/iio/iio.h>
15
16#include <linux/iio/common/st_sensors.h>
17#include <linux/iio/common/st_sensors_spi.h>
18#include "st_pressure.h"
19
20/*
21 * For new single-chip sensors use <device_name> as compatible string.
22 * For old single-chip devices keep <device_name>-press to maintain
23 * compatibility
24 */
25static const struct of_device_id st_press_of_match[] = {
26	{
27		.compatible = "st,lps001wp-press",
28		.data = LPS001WP_PRESS_DEV_NAME,
29	},
30	{
31		.compatible = "st,lps25h-press",
32		.data = LPS25H_PRESS_DEV_NAME,
33	},
34	{
35		.compatible = "st,lps331ap-press",
36		.data = LPS331AP_PRESS_DEV_NAME,
37	},
38	{
39		.compatible = "st,lps22hb-press",
40		.data = LPS22HB_PRESS_DEV_NAME,
41	},
42	{
43		.compatible = "st,lps33hw",
44		.data = LPS33HW_PRESS_DEV_NAME,
45	},
46	{
47		.compatible = "st,lps35hw",
48		.data = LPS35HW_PRESS_DEV_NAME,
49	},
50	{
51		.compatible = "st,lps22hh",
52		.data = LPS22HH_PRESS_DEV_NAME,
53	},
54	{
55		.compatible = "st,lps22df",
56		.data = LPS22DF_PRESS_DEV_NAME,
57	},
58	{},
59};
60MODULE_DEVICE_TABLE(of, st_press_of_match);
61
62static int st_press_spi_probe(struct spi_device *spi)
63{
64	const struct st_sensor_settings *settings;
65	struct st_sensor_data *press_data;
66	struct iio_dev *indio_dev;
67	int err;
68
69	st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
70
71	settings = st_press_get_settings(spi->modalias);
72	if (!settings) {
73		dev_err(&spi->dev, "device name %s not recognized.\n",
74			spi->modalias);
75		return -ENODEV;
76	}
77
78	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
79	if (!indio_dev)
80		return -ENOMEM;
81
82	press_data = iio_priv(indio_dev);
83	press_data->sensor_settings = (struct st_sensor_settings *)settings;
84
85	err = st_sensors_spi_configure(indio_dev, spi);
86	if (err < 0)
87		return err;
88
89	err = st_sensors_power_enable(indio_dev);
90	if (err)
91		return err;
92
93	return st_press_common_probe(indio_dev);
94}
95
96static const struct spi_device_id st_press_id_table[] = {
97	{ LPS001WP_PRESS_DEV_NAME },
98	{ LPS25H_PRESS_DEV_NAME },
99	{ LPS331AP_PRESS_DEV_NAME },
100	{ LPS22HB_PRESS_DEV_NAME },
101	{ LPS33HW_PRESS_DEV_NAME },
102	{ LPS35HW_PRESS_DEV_NAME },
103	{ LPS22HH_PRESS_DEV_NAME },
104	{ LPS22DF_PRESS_DEV_NAME },
105	{ "lps001wp-press" },
106	{ "lps25h-press", },
107	{ "lps331ap-press" },
108	{ "lps22hb-press" },
109	{},
110};
111MODULE_DEVICE_TABLE(spi, st_press_id_table);
112
113static struct spi_driver st_press_driver = {
114	.driver = {
115		.name = "st-press-spi",
116		.of_match_table = st_press_of_match,
117	},
118	.probe = st_press_spi_probe,
119	.id_table = st_press_id_table,
120};
121module_spi_driver(st_press_driver);
122
123MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
124MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
125MODULE_LICENSE("GPL v2");
126MODULE_IMPORT_NS(IIO_ST_SENSORS);
127