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/acpi.h>
15 #include <linux/i2c.h>
16 #include <linux/iio/iio.h>
17
18 #include <linux/iio/common/st_sensors.h>
19 #include <linux/iio/common/st_sensors_i2c.h>
20 #include "st_pressure.h"
21
22 #ifdef CONFIG_OF
23 static const struct of_device_id st_press_of_match[] = {
24 {
25 .compatible = "st,lps001wp-press",
26 .data = LPS001WP_PRESS_DEV_NAME,
27 },
28 {
29 .compatible = "st,lps25h-press",
30 .data = LPS25H_PRESS_DEV_NAME,
31 },
32 {
33 .compatible = "st,lps331ap-press",
34 .data = LPS331AP_PRESS_DEV_NAME,
35 },
36 {
37 .compatible = "st,lps22hb-press",
38 .data = LPS22HB_PRESS_DEV_NAME,
39 },
40 {
41 .compatible = "st,lps33hw",
42 .data = LPS33HW_PRESS_DEV_NAME,
43 },
44 {
45 .compatible = "st,lps35hw",
46 .data = LPS35HW_PRESS_DEV_NAME,
47 },
48 {},
49 };
50 MODULE_DEVICE_TABLE(of, st_press_of_match);
51 #else
52 #define st_press_of_match NULL
53 #endif
54
55 #ifdef CONFIG_ACPI
56 static const struct acpi_device_id st_press_acpi_match[] = {
57 {"SNO9210", LPS22HB},
58 { },
59 };
60 MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
61 #else
62 #define st_press_acpi_match NULL
63 #endif
64
65 static const struct i2c_device_id st_press_id_table[] = {
66 { LPS001WP_PRESS_DEV_NAME, LPS001WP },
67 { LPS25H_PRESS_DEV_NAME, LPS25H },
68 { LPS331AP_PRESS_DEV_NAME, LPS331AP },
69 { LPS22HB_PRESS_DEV_NAME, LPS22HB },
70 { LPS33HW_PRESS_DEV_NAME, LPS33HW },
71 { LPS35HW_PRESS_DEV_NAME, LPS35HW },
72 {},
73 };
74 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
75
st_press_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)76 static int st_press_i2c_probe(struct i2c_client *client,
77 const struct i2c_device_id *id)
78 {
79 struct iio_dev *indio_dev;
80 struct st_sensor_data *press_data;
81 int ret;
82
83 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
84 if (!indio_dev)
85 return -ENOMEM;
86
87 press_data = iio_priv(indio_dev);
88
89 if (client->dev.of_node) {
90 st_sensors_of_name_probe(&client->dev, st_press_of_match,
91 client->name, sizeof(client->name));
92 } else if (ACPI_HANDLE(&client->dev)) {
93 ret = st_sensors_match_acpi_device(&client->dev);
94 if ((ret < 0) || (ret >= ST_PRESS_MAX))
95 return -ENODEV;
96
97 strlcpy(client->name, st_press_id_table[ret].name,
98 sizeof(client->name));
99 } else if (!id)
100 return -ENODEV;
101
102 st_sensors_i2c_configure(indio_dev, client, press_data);
103
104 ret = st_press_common_probe(indio_dev);
105 if (ret < 0)
106 return ret;
107
108 return 0;
109 }
110
st_press_i2c_remove(struct i2c_client * client)111 static int st_press_i2c_remove(struct i2c_client *client)
112 {
113 st_press_common_remove(i2c_get_clientdata(client));
114
115 return 0;
116 }
117
118 static struct i2c_driver st_press_driver = {
119 .driver = {
120 .name = "st-press-i2c",
121 .of_match_table = of_match_ptr(st_press_of_match),
122 .acpi_match_table = ACPI_PTR(st_press_acpi_match),
123 },
124 .probe = st_press_i2c_probe,
125 .remove = st_press_i2c_remove,
126 .id_table = st_press_id_table,
127 };
128 module_i2c_driver(st_press_driver);
129
130 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
131 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
132 MODULE_LICENSE("GPL v2");
133
