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 | .compatible = "st,lps22df" , |
56 | .data = LPS22DF_PRESS_DEV_NAME, |
57 | }, |
58 | {}, |
59 | }; |
60 | MODULE_DEVICE_TABLE(of, st_press_of_match); |
61 | |
62 | static 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(dev: &spi->dev, name: spi->modalias, len: sizeof(spi->modalias)); |
70 | |
71 | settings = st_press_get_settings(name: 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(parent: &spi->dev, sizeof_priv: 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 | |
96 | static 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 | }; |
111 | MODULE_DEVICE_TABLE(spi, st_press_id_table); |
112 | |
113 | static 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 | }; |
121 | module_spi_driver(st_press_driver); |
122 | |
123 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>" ); |
124 | MODULE_DESCRIPTION("STMicroelectronics pressures spi driver" ); |
125 | MODULE_LICENSE("GPL v2" ); |
126 | MODULE_IMPORT_NS(IIO_ST_SENSORS); |
127 | |