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 */
25 static 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 };
56 MODULE_DEVICE_TABLE(of, st_press_of_match);
57
st_press_spi_probe(struct spi_device * spi)58 static int st_press_spi_probe(struct spi_device *spi)
59 {
60 const struct st_sensor_settings *settings;
61 struct st_sensor_data *press_data;
62 struct iio_dev *indio_dev;
63 int err;
64
65 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
66
67 settings = st_press_get_settings(spi->modalias);
68 if (!settings) {
69 dev_err(&spi->dev, "device name %s not recognized.\n",
70 spi->modalias);
71 return -ENODEV;
72 }
73
74 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
75 if (!indio_dev)
76 return -ENOMEM;
77
78 press_data = iio_priv(indio_dev);
79 press_data->sensor_settings = (struct st_sensor_settings *)settings;
80
81 err = st_sensors_spi_configure(indio_dev, spi);
82 if (err < 0)
83 return err;
84
85 err = st_sensors_power_enable(indio_dev);
86 if (err)
87 return err;
88
89 return st_press_common_probe(indio_dev);
90 }
91
92 static const struct spi_device_id st_press_id_table[] = {
93 { LPS001WP_PRESS_DEV_NAME },
94 { LPS25H_PRESS_DEV_NAME },
95 { LPS331AP_PRESS_DEV_NAME },
96 { LPS22HB_PRESS_DEV_NAME },
97 { LPS33HW_PRESS_DEV_NAME },
98 { LPS35HW_PRESS_DEV_NAME },
99 { LPS22HH_PRESS_DEV_NAME },
100 { "lps001wp-press" },
101 { "lps25h-press", },
102 { "lps331ap-press" },
103 { "lps22hb-press" },
104 {},
105 };
106 MODULE_DEVICE_TABLE(spi, st_press_id_table);
107
108 static struct spi_driver st_press_driver = {
109 .driver = {
110 .name = "st-press-spi",
111 .of_match_table = st_press_of_match,
112 },
113 .probe = st_press_spi_probe,
114 .id_table = st_press_id_table,
115 };
116 module_spi_driver(st_press_driver);
117
118 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
119 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
120 MODULE_LICENSE("GPL v2");
121 MODULE_IMPORT_NS(IIO_ST_SENSORS);
122