1 /*
2 * STMicroelectronics pressures driver
3 *
4 * Copyright 2013 STMicroelectronics Inc.
5 *
6 * Denis Ciocca <denis.ciocca@st.com>
7 *
8 * Licensed under the GPL-2.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/spi/spi.h>
15 #include <linux/iio/iio.h>
16
17 #include <linux/iio/common/st_sensors.h>
18 #include <linux/iio/common/st_sensors_spi.h>
19 #include "st_pressure.h"
20
21 #ifdef CONFIG_OF
22 /*
23 * For new single-chip sensors use <device_name> as compatible string.
24 * For old single-chip devices keep <device_name>-press to maintain
25 * compatibility
26 */
27 static const struct of_device_id st_press_of_match[] = {
28 {
29 .compatible = "st,lps001wp-press",
30 .data = LPS001WP_PRESS_DEV_NAME,
31 },
32 {
33 .compatible = "st,lps25h-press",
34 .data = LPS25H_PRESS_DEV_NAME,
35 },
36 {
37 .compatible = "st,lps331ap-press",
38 .data = LPS331AP_PRESS_DEV_NAME,
39 },
40 {
41 .compatible = "st,lps22hb-press",
42 .data = LPS22HB_PRESS_DEV_NAME,
43 },
44 {
45 .compatible = "st,lps33hw",
46 .data = LPS33HW_PRESS_DEV_NAME,
47 },
48 {
49 .compatible = "st,lps35hw",
50 .data = LPS35HW_PRESS_DEV_NAME,
51 },
52 {},
53 };
54 MODULE_DEVICE_TABLE(of, st_press_of_match);
55 #else
56 #define st_press_of_match NULL
57 #endif
58
st_press_spi_probe(struct spi_device * spi)59 static int st_press_spi_probe(struct spi_device *spi)
60 {
61 struct iio_dev *indio_dev;
62 struct st_sensor_data *press_data;
63 int err;
64
65 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
66 if (indio_dev == NULL)
67 return -ENOMEM;
68
69 press_data = iio_priv(indio_dev);
70
71 st_sensors_of_name_probe(&spi->dev, st_press_of_match,
72 spi->modalias, sizeof(spi->modalias));
73 st_sensors_spi_configure(indio_dev, spi, press_data);
74
75 err = st_press_common_probe(indio_dev);
76 if (err < 0)
77 return err;
78
79 return 0;
80 }
81
st_press_spi_remove(struct spi_device * spi)82 static int st_press_spi_remove(struct spi_device *spi)
83 {
84 st_press_common_remove(spi_get_drvdata(spi));
85
86 return 0;
87 }
88
89 static const struct spi_device_id st_press_id_table[] = {
90 { LPS001WP_PRESS_DEV_NAME },
91 { LPS25H_PRESS_DEV_NAME },
92 { LPS331AP_PRESS_DEV_NAME },
93 { LPS22HB_PRESS_DEV_NAME },
94 { LPS33HW_PRESS_DEV_NAME },
95 { LPS35HW_PRESS_DEV_NAME },
96 {},
97 };
98 MODULE_DEVICE_TABLE(spi, st_press_id_table);
99
100 static struct spi_driver st_press_driver = {
101 .driver = {
102 .name = "st-press-spi",
103 .of_match_table = of_match_ptr(st_press_of_match),
104 },
105 .probe = st_press_spi_probe,
106 .remove = st_press_spi_remove,
107 .id_table = st_press_id_table,
108 };
109 module_spi_driver(st_press_driver);
110
111 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
112 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
113 MODULE_LICENSE("GPL v2");
114