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217494e5 DC |
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> | |
9d317724 | 14 | #include <linux/acpi.h> |
217494e5 DC |
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 | ||
2d7768a8 LW |
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 | }, | |
e039e2f5 GB |
36 | { |
37 | .compatible = "st,lps22hb-press", | |
38 | .data = LPS22HB_PRESS_DEV_NAME, | |
39 | }, | |
2d7768a8 LW |
40 | {}, |
41 | }; | |
42 | MODULE_DEVICE_TABLE(of, st_press_of_match); | |
43 | #else | |
44 | #define st_press_of_match NULL | |
45 | #endif | |
46 | ||
9d317724 SB |
47 | #ifdef CONFIG_ACPI |
48 | static const struct acpi_device_id st_press_acpi_match[] = { | |
49 | {"SNO9210", LPS22HB}, | |
50 | { }, | |
51 | }; | |
52 | MODULE_DEVICE_TABLE(acpi, st_press_acpi_match); | |
53 | #else | |
54 | #define st_press_acpi_match NULL | |
55 | #endif | |
56 | ||
57 | static const struct i2c_device_id st_press_id_table[] = { | |
58 | { LPS001WP_PRESS_DEV_NAME, LPS001WP }, | |
59 | { LPS25H_PRESS_DEV_NAME, LPS25H }, | |
60 | { LPS331AP_PRESS_DEV_NAME, LPS331AP }, | |
61 | { LPS22HB_PRESS_DEV_NAME, LPS22HB }, | |
62 | {}, | |
63 | }; | |
64 | MODULE_DEVICE_TABLE(i2c, st_press_id_table); | |
65 | ||
217494e5 DC |
66 | static int st_press_i2c_probe(struct i2c_client *client, |
67 | const struct i2c_device_id *id) | |
68 | { | |
69 | struct iio_dev *indio_dev; | |
a1dcf429 | 70 | struct st_sensor_data *press_data; |
9d317724 | 71 | int ret; |
217494e5 | 72 | |
a1dcf429 | 73 | indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data)); |
d0fe8c8b SK |
74 | if (!indio_dev) |
75 | return -ENOMEM; | |
217494e5 | 76 | |
a1dcf429 | 77 | press_data = iio_priv(indio_dev); |
9d317724 SB |
78 | |
79 | if (client->dev.of_node) { | |
80 | st_sensors_of_i2c_probe(client, st_press_of_match); | |
81 | } else if (ACPI_HANDLE(&client->dev)) { | |
82 | ret = st_sensors_match_acpi_device(&client->dev); | |
83 | if ((ret < 0) || (ret >= ST_PRESS_MAX)) | |
84 | return -ENODEV; | |
85 | ||
86 | strncpy(client->name, st_press_id_table[ret].name, | |
87 | sizeof(client->name)); | |
88 | client->name[sizeof(client->name) - 1] = '\0'; | |
89 | } else if (!id) | |
90 | return -ENODEV; | |
217494e5 | 91 | |
a1dcf429 | 92 | st_sensors_i2c_configure(indio_dev, client, press_data); |
217494e5 | 93 | |
9d317724 SB |
94 | ret = st_press_common_probe(indio_dev); |
95 | if (ret < 0) | |
96 | return ret; | |
217494e5 DC |
97 | |
98 | return 0; | |
217494e5 DC |
99 | } |
100 | ||
101 | static int st_press_i2c_remove(struct i2c_client *client) | |
102 | { | |
103 | st_press_common_remove(i2c_get_clientdata(client)); | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
217494e5 DC |
108 | static struct i2c_driver st_press_driver = { |
109 | .driver = { | |
217494e5 | 110 | .name = "st-press-i2c", |
2d7768a8 | 111 | .of_match_table = of_match_ptr(st_press_of_match), |
9d317724 | 112 | .acpi_match_table = ACPI_PTR(st_press_acpi_match), |
217494e5 DC |
113 | }, |
114 | .probe = st_press_i2c_probe, | |
115 | .remove = st_press_i2c_remove, | |
116 | .id_table = st_press_id_table, | |
117 | }; | |
118 | module_i2c_driver(st_press_driver); | |
119 | ||
120 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); | |
121 | MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver"); | |
122 | MODULE_LICENSE("GPL v2"); |