diff options
Diffstat (limited to 'drivers/iio/magnetometer/st_magn_i2c.c')
-rw-r--r-- | drivers/iio/magnetometer/st_magn_i2c.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c new file mode 100644 index 000000000000..710b256a5a0e --- /dev/null +++ b/drivers/iio/magnetometer/st_magn_i2c.c | |||
@@ -0,0 +1,81 @@ | |||
1 | /* | ||
2 | * STMicroelectronics magnetometers driver | ||
3 | * | ||
4 | * Copyright 2012-2013 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/i2c.h> | ||
15 | #include <linux/iio/iio.h> | ||
16 | #include <linux/iio/trigger.h> | ||
17 | |||
18 | #include <linux/iio/common/st_sensors.h> | ||
19 | #include <linux/iio/common/st_sensors_i2c.h> | ||
20 | #include "st_magn.h" | ||
21 | |||
22 | static int st_magn_i2c_probe(struct i2c_client *client, | ||
23 | const struct i2c_device_id *id) | ||
24 | { | ||
25 | struct iio_dev *indio_dev; | ||
26 | struct st_sensor_data *mdata; | ||
27 | int err; | ||
28 | |||
29 | indio_dev = iio_device_alloc(sizeof(*mdata)); | ||
30 | if (indio_dev == NULL) { | ||
31 | err = -ENOMEM; | ||
32 | goto iio_device_alloc_error; | ||
33 | } | ||
34 | |||
35 | mdata = iio_priv(indio_dev); | ||
36 | mdata->dev = &client->dev; | ||
37 | |||
38 | st_sensors_i2c_configure(indio_dev, client, mdata); | ||
39 | |||
40 | err = st_magn_common_probe(indio_dev); | ||
41 | if (err < 0) | ||
42 | goto st_magn_common_probe_error; | ||
43 | |||
44 | return 0; | ||
45 | |||
46 | st_magn_common_probe_error: | ||
47 | iio_device_free(indio_dev); | ||
48 | iio_device_alloc_error: | ||
49 | return err; | ||
50 | } | ||
51 | |||
52 | static int st_magn_i2c_remove(struct i2c_client *client) | ||
53 | { | ||
54 | struct iio_dev *indio_dev = i2c_get_clientdata(client); | ||
55 | st_magn_common_remove(indio_dev); | ||
56 | |||
57 | return 0; | ||
58 | } | ||
59 | |||
60 | static const struct i2c_device_id st_magn_id_table[] = { | ||
61 | { LSM303DLHC_MAGN_DEV_NAME }, | ||
62 | { LSM303DLM_MAGN_DEV_NAME }, | ||
63 | { LIS3MDL_MAGN_DEV_NAME }, | ||
64 | {}, | ||
65 | }; | ||
66 | MODULE_DEVICE_TABLE(i2c, st_magn_id_table); | ||
67 | |||
68 | static struct i2c_driver st_magn_driver = { | ||
69 | .driver = { | ||
70 | .owner = THIS_MODULE, | ||
71 | .name = "st-magn-i2c", | ||
72 | }, | ||
73 | .probe = st_magn_i2c_probe, | ||
74 | .remove = st_magn_i2c_remove, | ||
75 | .id_table = st_magn_id_table, | ||
76 | }; | ||
77 | module_i2c_driver(st_magn_driver); | ||
78 | |||
79 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); | ||
80 | MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver"); | ||
81 | MODULE_LICENSE("GPL v2"); | ||