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/slab.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 #ifdef CONFIG_OF
21 /*
22  * For new single-chip sensors use <device_name> as compatible string.
23  * For old single-chip devices keep <device_name>-press to maintain
24  * compatibility
25  */
26 static const struct of_device_id st_press_of_match[] = {
27 	{
28 		.compatible = "st,lps001wp-press",
29 		.data = LPS001WP_PRESS_DEV_NAME,
30 	},
31 	{
32 		.compatible = "st,lps25h-press",
33 		.data = LPS25H_PRESS_DEV_NAME,
34 	},
35 	{
36 		.compatible = "st,lps331ap-press",
37 		.data = LPS331AP_PRESS_DEV_NAME,
38 	},
39 	{
40 		.compatible = "st,lps22hb-press",
41 		.data = LPS22HB_PRESS_DEV_NAME,
42 	},
43 	{
44 		.compatible = "st,lps33hw",
45 		.data = LPS33HW_PRESS_DEV_NAME,
46 	},
47 	{
48 		.compatible = "st,lps35hw",
49 		.data = LPS35HW_PRESS_DEV_NAME,
50 	},
51 	{
52 		.compatible = "st,lps22hh",
53 		.data = LPS22HH_PRESS_DEV_NAME,
54 	},
55 	{},
56 };
57 MODULE_DEVICE_TABLE(of, st_press_of_match);
58 #else
59 #define st_press_of_match	NULL
60 #endif
61 
62 static int st_press_spi_probe(struct spi_device *spi)
63 {
64 	struct iio_dev *indio_dev;
65 	struct st_sensor_data *press_data;
66 	int err;
67 
68 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
69 	if (indio_dev == NULL)
70 		return -ENOMEM;
71 
72 	press_data = iio_priv(indio_dev);
73 
74 	st_sensors_of_name_probe(&spi->dev, st_press_of_match,
75 				 spi->modalias, sizeof(spi->modalias));
76 	st_sensors_spi_configure(indio_dev, spi, press_data);
77 
78 	err = st_press_common_probe(indio_dev);
79 	if (err < 0)
80 		return err;
81 
82 	return 0;
83 }
84 
85 static int st_press_spi_remove(struct spi_device *spi)
86 {
87 	st_press_common_remove(spi_get_drvdata(spi));
88 
89 	return 0;
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 	{},
101 };
102 MODULE_DEVICE_TABLE(spi, st_press_id_table);
103 
104 static struct spi_driver st_press_driver = {
105 	.driver = {
106 		.name = "st-press-spi",
107 		.of_match_table = of_match_ptr(st_press_of_match),
108 	},
109 	.probe = st_press_spi_probe,
110 	.remove = st_press_spi_remove,
111 	.id_table = st_press_id_table,
112 };
113 module_spi_driver(st_press_driver);
114 
115 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
116 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
117 MODULE_LICENSE("GPL v2");
118