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/acpi.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/mod_devicetable.h>
14 #include <linux/i2c.h>
15 #include <linux/iio/iio.h>
16
17 #include <linux/iio/common/st_sensors.h>
18 #include <linux/iio/common/st_sensors_i2c.h>
19 #include "st_pressure.h"
20
21 static const struct of_device_id st_press_of_match[] = {
22 {
23 .compatible = "st,lps001wp-press",
24 .data = LPS001WP_PRESS_DEV_NAME,
25 },
26 {
27 .compatible = "st,lps25h-press",
28 .data = LPS25H_PRESS_DEV_NAME,
29 },
30 {
31 .compatible = "st,lps331ap-press",
32 .data = LPS331AP_PRESS_DEV_NAME,
33 },
34 {
35 .compatible = "st,lps22hb-press",
36 .data = LPS22HB_PRESS_DEV_NAME,
37 },
38 {
39 .compatible = "st,lps33hw",
40 .data = LPS33HW_PRESS_DEV_NAME,
41 },
42 {
43 .compatible = "st,lps35hw",
44 .data = LPS35HW_PRESS_DEV_NAME,
45 },
46 {
47 .compatible = "st,lps22hh",
48 .data = LPS22HH_PRESS_DEV_NAME,
49 },
50 {},
51 };
52 MODULE_DEVICE_TABLE(of, st_press_of_match);
53
54 #ifdef CONFIG_ACPI
55 static const struct acpi_device_id st_press_acpi_match[] = {
56 {"SNO9210", LPS22HB},
57 { },
58 };
59 MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
60 #endif
61
62 static const struct i2c_device_id st_press_id_table[] = {
63 { LPS001WP_PRESS_DEV_NAME, LPS001WP },
64 { LPS25H_PRESS_DEV_NAME, LPS25H },
65 { LPS331AP_PRESS_DEV_NAME, LPS331AP },
66 { LPS22HB_PRESS_DEV_NAME, LPS22HB },
67 { LPS33HW_PRESS_DEV_NAME, LPS33HW },
68 { LPS35HW_PRESS_DEV_NAME, LPS35HW },
69 { LPS22HH_PRESS_DEV_NAME, LPS22HH },
70 {},
71 };
72 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
73
st_press_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)74 static int st_press_i2c_probe(struct i2c_client *client,
75 const struct i2c_device_id *id)
76 {
77 const struct st_sensor_settings *settings;
78 struct st_sensor_data *press_data;
79 struct iio_dev *indio_dev;
80 int ret;
81
82 st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
83
84 settings = st_press_get_settings(client->name);
85 if (!settings) {
86 dev_err(&client->dev, "device name %s not recognized.\n",
87 client->name);
88 return -ENODEV;
89 }
90
91 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
92 if (!indio_dev)
93 return -ENOMEM;
94
95 press_data = iio_priv(indio_dev);
96 press_data->sensor_settings = (struct st_sensor_settings *)settings;
97
98 ret = st_sensors_i2c_configure(indio_dev, client);
99 if (ret < 0)
100 return ret;
101
102 ret = st_sensors_power_enable(indio_dev);
103 if (ret)
104 return ret;
105
106 ret = st_press_common_probe(indio_dev);
107 if (ret < 0)
108 goto st_press_power_off;
109
110 return 0;
111
112 st_press_power_off:
113 st_sensors_power_disable(indio_dev);
114
115 return ret;
116 }
117
st_press_i2c_remove(struct i2c_client * client)118 static int st_press_i2c_remove(struct i2c_client *client)
119 {
120 struct iio_dev *indio_dev = i2c_get_clientdata(client);
121
122 st_press_common_remove(indio_dev);
123
124 st_sensors_power_disable(indio_dev);
125
126 return 0;
127 }
128
129 static struct i2c_driver st_press_driver = {
130 .driver = {
131 .name = "st-press-i2c",
132 .of_match_table = st_press_of_match,
133 .acpi_match_table = ACPI_PTR(st_press_acpi_match),
134 },
135 .probe = st_press_i2c_probe,
136 .remove = st_press_i2c_remove,
137 .id_table = st_press_id_table,
138 };
139 module_i2c_driver(st_press_driver);
140
141 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
142 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
143 MODULE_LICENSE("GPL v2");
144