drivers/iio/pressure/st_pressure_i2c.c

   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/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 int st_press_i2c_probe(struct i2c_client *client,
  22                                                 const struct i2c_device_id *id)
  23 {
  24         struct iio_dev *indio_dev;
  25         struct st_sensor_data *pdata;
  26         int err;
  27
  28         indio_dev = iio_device_alloc(sizeof(*pdata));
  29         if (indio_dev == NULL) {
  30                 err = -ENOMEM;
  31                 goto iio_device_alloc_error;
  32         }
  33
  34         pdata = iio_priv(indio_dev);
  35         pdata->dev = &client->dev;
  36
  37         st_sensors_i2c_configure(indio_dev, client, pdata);
  38
  39         err = st_press_common_probe(indio_dev);
  40         if (err < 0)
  41                 goto st_press_common_probe_error;
  42
  43         return 0;
  44
  45 st_press_common_probe_error:
  46         iio_device_free(indio_dev);
  47 iio_device_alloc_error:
  48         return err;
  49 }
  50
  51 static int st_press_i2c_remove(struct i2c_client *client)
  52 {
  53         st_press_common_remove(i2c_get_clientdata(client));
  54
  55         return 0;
  56 }
  57
  58 static const struct i2c_device_id st_press_id_table[] = {
  59         { LPS331AP_PRESS_DEV_NAME },
  60         {},
  61 };
  62 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
  63
  64 static struct i2c_driver st_press_driver = {
  65         .driver = {
  66                 .owner = THIS_MODULE,
  67                 .name = "st-press-i2c",
  68         },
  69         .probe = st_press_i2c_probe,
  70         .remove = st_press_i2c_remove,
  71         .id_table = st_press_id_table,
  72 };
  73 module_i2c_driver(st_press_driver);
  74
  75 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  76 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
  77 MODULE_LICENSE("GPL v2");